Search Flights with Gemini via Telegram and Send Serpapi Price Alerts

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "nodes": [
    {
      "id": "a3ebedb4-2ef8-4367-b391-b13eaea0a337",
      "name": "\ud83d\udccc Workflow Introduction",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1264,
        240
      ],
      "parameters": {
        "width": 368,
        "height": 1424,
        "content": "# \ud83c\udfaf Smart Flight Price Alert Bot with AI Assistant\n\n## Overview\nA comprehensive flight price monitoring system that combines:\n- **Automated price monitoring** (Schedule-based alerts)\n- **AI-powered flight assistant** (Chat-based queries via Telegram)\n\n## Key Features\n- \u2708\ufe0f Automated flight price tracking\n- \ud83e\udd16 AI assistant for instant flight queries\n- \ud83d\udcb0 Price threshold alerts\n- \ud83d\udcf1 Telegram notifications\n- \ud83e\udde0 Conversation memory (AI understands context)\n\n## Two Main Workflow\n\n### 1\ufe0f\u20e3 Automated Price Monitoring\n**Trigger:** Schedule (Every 7 days at 7:30 AM)\n**Flow:** Edit Fields \u2192 Search Flights \u2192 Check Price \u2192 Send Alert\n**Purpose:** Monitor specific routes and alert when price drops below threshold\n\n### 2\ufe0f\u20e3 AI Flight Assistant\n**Trigger:** Telegram message\n**Flow:** User Message \u2192 AI Agent \u2192 Flight Search Tools \u2192 Formatted Response\n**Purpose:** Interactive flight search with natural language understanding\n\n## Setup Requirements\n\n### API Credentials Needed:\n1. **Telegram Bot Token** - For messaging\n2. **SerpAPI Key** - For flight searches, Free 500 requests per month\n3. **Google Gemini API** - For AI responses\n\n### Configuration Steps:\n1. Create Telegram bot via @BotFather\n2. Get SerpAPI key from https://serpapi.com\n3. Get Google Gemini API from https://aistudio.google.com/app/apikey\n4. Configure price thresholds in \"Edit Fields\" node\n5. Activate workflow\n\n---\n**Created by:** [Nguyen Thieu Toan](https://nguyenthieutoan.com)\n**More usefull template at:** [Nguyen Thieu Toan's n8n template](https://n8n.io/creators/nguyenthieutoan)\n**Template Version:** 1.0\n**Last Updated:** 01/24/2026"
      },
      "typeVersion": 1
    },
    {
      "id": "e996622a-af73-4f69-8ff9-74029e7cbd6f",
      "name": "\ud83d\udcca Workflow 1 Documentation",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1648,
        240
      ],
      "parameters": {
        "color": 7,
        "width": 1888,
        "height": 720,
        "content": "## \ud83d\udd04 Workflow 1: Automated Price Monitoring\n\n### Purpose\nAutomatically check flight prices on a schedule and send alerts when price drops below threshold.\n\n### Flow Steps\n1. **Schedule Trigger** - Runs every 7 days at 7:30 AM\n2. **Edit Fields** - Configure:\n   - Departure/Arrival airports (IATA codes)\n   - Price threshold (VND)\n   - Telegram ID for alerts\n3. **Google Flights Search** - Query flight prices\n4. **Code: Extract Best Price** - Process API results\n5. **Filter** - Check if price < threshold\n6. **Send Alert** - Notify via Telegram\n\n### Configuration Notes\n- **Airport Codes:** Use IATA codes (HAN, SGN, BKK, etc.)\n- **Price Threshold:** Set your acceptable price in VND\n- **Schedule:** Modify frequency in Schedule Trigger node\n- **Multiple Routes:** Duplicate workflow for different routes\n\n### Example Alert Message:\n```\n\u2708\ufe0f V\u00c9 R\u1eba NH\u1ea4T\nGi\u00e1: 2,450,000 VND\nH\u00e3ng: Vietjet Air\nGi\u1edd: 06:00 \u2192 08:00\n```"
      },
      "typeVersion": 1
    },
    {
      "id": "3153c9c7-f80b-4587-9a7e-24f819a81b0f",
      "name": "\ud83d\udcac Workflow 2 Documentation",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1648,
        976
      ],
      "parameters": {
        "color": 7,
        "width": 1888,
        "height": 688,
        "content": "## \ud83e\udd16 Workflow 2: AI Flight Assistant\n\n### Purpose\nInteractive flight search via Telegram with AI-powered natural language understanding.\n\n### Flow Steps\n1. **Telegram Trigger** - Receives user messages\n2. **AI Agent** - Understands queries & calls tools\n3. **Flight Search Tools:**\n   - Round-trip flights\n   - One-way flights\n4. **Memory** - Maintains conversation context\n5. **Response** - Sends formatted results\n\n### AI Capabilities\n- \u2705 Understands natural language queries\n- \u2705 Handles missing information (asks follow-up questions)\n- \u2705 Supports both Vietnamese and English\n- \u2705 Remembers conversation context\n- \u2705 Auto-calculates return dates (default: +5 days)\n- \u2705 Formats responses in Telegram HTML\n\n### Response Format\nTelegram HTML with:\n- **Bold** headings\n- Price formatting (comma separators)\n- Airline and timing info\n- Follow-up questions"
      },
      "typeVersion": 1
    },
    {
      "id": "fb9fc221-615f-4cde-90fc-395a4ceea2bf",
      "name": "\u23f0 Schedule Trigger",
      "type": "n8n-nodes-base.scheduleTrigger",
      "notes": "Runs every 7 days at 7:30 AM\n\nModify interval in parameters:\n- Daily: daysInterval: 1\n- Weekly: daysInterval: 7\n- Custom: Adjust as needed",
      "position": [
        2208,
        592
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "daysInterval": 7,
              "triggerAtHour": 7,
              "triggerAtMinute": 30
            }
          ]
        }
      },
      "typeVersion": 1.3
    },
    {
      "id": "ae68ae9c-c891-41cf-ad05-fbd924d95a35",
      "name": "\u2699\ufe0f Edit Fields",
      "type": "n8n-nodes-base.set",
      "notes": "\u270f\ufe0f CONFIGURE YOUR SETTINGS:\n\n1. \u0110i\u1ec3m \u0111i: Airport code (HAN, SGN, DAD...)\n2. \u0110i\u1ec3m \u0111\u1ebfn: Airport code (BKK, SIN, NRT...)\n3. Gi\u00e1 ch\u1ea5p nh\u1eadn: Max price in VND\n4. TelegramID: Your Telegram user ID\n\n\ud83d\udca1 Get your Telegram ID:\n- Message @userinfobot on Telegram\n- It will reply with your ID number",
      "position": [
        2432,
        592
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "departure",
              "name": "Departure",
              "type": "string",
              "value": "HAN"
            },
            {
              "id": "arrival",
              "name": "Destination",
              "type": "string",
              "value": "BKK"
            },
            {
              "id": "threshold",
              "name": "Acceptable Price (USD)",
              "type": "number",
              "value": 1000
            },
            {
              "id": "telegram_id",
              "name": "TelegramID",
              "type": "string",
              "value": "YOUR_TELEGRAM_ID"
            }
          ]
        }
      },
      "typeVersion": 3.4
    },
    {
      "id": "8ff7f716-49d2-46c7-9c85-211903f6037d",
      "name": "\u2708\ufe0f Google Flights Search",
      "type": "n8n-nodes-serpapi.serpApi",
      "notes": "Searches one-way flights for today's date\n\nAPI Parameters:\n- departure_id: Origin airport\n- arrival_id: Destination airport\n- outbound_date: Today (auto-generated)\n- type: 2 = One-way\n- gl: Country (vn = Vietnam)\n- hl: Language (vi = Vietnamese)\n- currency: VND",
      "position": [
        2656,
        592
      ],
      "parameters": {
        "type": "2",
        "operation": "google_flights",
        "arrival_id": "={{ $json.Destination }}",
        "departure_id": "={{ $json.Departure }}",
        "outbound_date": "={{ $now.toFormat('yyyy-MM-dd') }}",
        "requestOptions": {},
        "additionalFields": {
          "gl": "vn",
          "hl": "en",
          "currency": "USD"
        }
      },
      "credentials": {
        "serpApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "02b7753a-4706-40d1-ad42-dfcdf73dcb92",
      "name": "\ud83d\udcb0 Extract Best Price",
      "type": "n8n-nodes-base.code",
      "notes": "Processes SerpAPI response:\n\n1. Combines best_flights + other_flights\n2. Normalizes price formats\n3. Extracts airline, times\n4. Finds cheapest option\n5. Formats Vietnamese message\n\nOutput:\n- ok: true/false\n- minPrice: number\n- message: formatted string\n- meta: API metadata",
      "position": [
        2880,
        592
      ],
      "parameters": {
        "jsCode": "// Get metadata for reference\nconst meta = $input.first().json.search_metadata;\n\n// Get flight data\nconst data = $input.first().json;\n\n// Combine flights from both best_flights and other_flights\nconst flights = []\n  .concat(data.best_flights || [])\n  .concat(data.other_flights || []);\n\nif (!flights.length) {\n  return { \n    ok: false, \n    message: \"\u274c No flight data available\", \n    meta\n  };\n}\n\n// Helper: Convert value to number\nfunction toNumber(v) {\n  if (v == null) return null;\n  if (typeof v === \"number\") return v;\n  const s = String(v).replace(/[^\\d]/g, \"\");\n  return s ? Number(s) : null;\n}\n\n// Normalize flight data\nconst normalized = flights.map(f => {\n  const price =\n    toNumber(f.price) ??\n    toNumber(f?.price?.total) ??\n    toNumber(f?.price_str);\n\n  const airline = f.flights?.[0]?.airline || \"Unknown airline\";\n  const dep = f.flights?.[0]?.departure_airport?.time || \"\";\n  const arr = f.flights?.[0]?.arrival_airport?.time || \"\";\n\n  return { price, airline, dep, arr };\n}).filter(x => x.price != null);\n\nif (!normalized.length) {\n  return { \n    ok: false, \n    message: \"\u274c Flights found but no readable price\", \n    sample: flights[0] \n  };\n}\n\n// Sort by ascending price\nnormalized.sort((a, b) => a.price - b.price);\nconst best = normalized[0];\n\nreturn {\n  ok: true,\n  minPrice: best.price,\n  message:\n    `\u2708\ufe0f Cheapest Ticket\\n` +\n    `Price: ${best.price.toLocaleString(\"en-US\")} USD\\n` +\n    `Airline: ${best.airline}\\n` +\n    `Time: ${best.dep} \u2192 ${best.arr}`,\n  meta\n};\n"
      },
      "typeVersion": 2
    },
    {
      "id": "319aa495-ca10-4de7-949d-a539094812a4",
      "name": "\ud83d\udd0d Filter by Price",
      "type": "n8n-nodes-base.filter",
      "notes": "Only proceeds if:\nminPrice < Price Threshold\n\nIf price is above threshold,\nworkflow stops here (no alert)",
      "position": [
        3104,
        592
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 3,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "loose"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "price_check",
              "operator": {
                "type": "number",
                "operation": "lt"
              },
              "leftValue": "={{ $json.minPrice }}",
              "rightValue": "={{ $('\u2699\ufe0f Edit Fields').item.json[\"Acceptable Price (USD))\"] }}"
            }
          ]
        },
        "looseTypeValidation": true
      },
      "typeVersion": 2.3
    },
    {
      "id": "769937c5-3f66-426e-9b7c-f467ee5de94b",
      "name": "\ud83d\udcf1 Send Alert",
      "type": "n8n-nodes-base.telegram",
      "notes": "Sends price alert to Telegram\n\nMessage format:\n\u2708\ufe0f V\u00c9 R\u1eba NH\u1ea4T\nGi\u00e1: 2,450,000 VND\nH\u00e3ng: Vietjet Air\nGi\u1edd: 06:00 \u2192 08:00",
      "position": [
        3328,
        592
      ],
      "parameters": {
        "text": "={{ $json.message }}",
        "chatId": "={{ $('\u2699\ufe0f Edit Fields').item.json.TelegramID }}",
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "e8a8d4a9-5462-424d-a9db-b4ad89e40383",
      "name": "\ud83d\udcac Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "notes": "Receives user messages from Telegram\n\nTo get Telegram Bot Token:\n1. Message @BotFather on Telegram\n2. Create new bot with /newbot\n3. Copy the token\n4. Add to n8n credentials",
      "position": [
        2208,
        1200
      ],
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "7d4cdc16-b6e8-4629-b04d-2512c709e9d5",
      "name": "\ud83d\udce8 Send Response",
      "type": "n8n-nodes-base.telegram",
      "notes": "Sends AI response to user\n\nFormat: Telegram HTML\n- <b>bold</b> for headings\n- Price formatting with commas\n- Flight details structured\n- Follow-up questions included",
      "position": [
        3088,
        1200
      ],
      "parameters": {
        "text": "={{ $json.output }}",
        "chatId": "={{ $('\ud83d\udcac Telegram Trigger').item.json.message.from.id }}",
        "additionalFields": {
          "parse_mode": "HTML",
          "appendAttribution": false
        }
      },
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "71a88953-79dc-4f91-96f8-e95e59a5a7f3",
      "name": "\ud83d\udcc8 Performance & Optimization",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        3552,
        240
      ],
      "parameters": {
        "color": 5,
        "width": 352,
        "height": 1424,
        "content": "## \ud83d\udcca Workflow Statistics & Performance\n\n### Automated Monitoring (Section 1)\n- **Frequency:** Every 7 days\n- **Execution time:** ~5-10 seconds\n- **API calls:** 1 per execution\n- **Cost:** ~$0.01 per search (SerpAPI)\n\n### AI Assistant (Section 2)\n- **Response time:** 3-8 seconds\n- **Avg tokens per query:** 500-800\n- **API calls:** 1-2 per conversation\n- **Cost:** ~$0.001 per query (Gemini)\n\n---\n\n## \ud83d\udca1 Optimization Tips\n\n### Reduce Costs\n1. Increase schedule interval (every 14 days)\n2. Use Gemini Flash over Pro\n3. Implement result caching\n4. Limit conversation memory window\n\n### Improve Performance\n1. Use webhook mode for instant responses\n2. Add error retry logic\n3. Cache airport code mappings\n4. Implement rate limiting\n\n### Enhance Accuracy\n1. Add more airport codes to AI context\n2. Include seasonal price trends\n3. Implement multi-currency support\n4. Add airline preference filtering\n\n---\n\n## \ud83d\udd04 Maintenance Schedule\n\n**Weekly:**\n- Check API quotas\n- Monitor error logs\n- Review alert accuracy\n\n**Monthly:**\n- Update airport codes\n- Verify price thresholds\n- Test AI response quality\n\n**Quarterly:**\n- Review API pricing\n- Update system prompts\n- Optimize workflows"
      },
      "typeVersion": 1
    },
    {
      "id": "8d41b7b0-e966-4aac-acce-85c52b808f53",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        2160,
        528
      ],
      "parameters": {
        "color": 3,
        "width": 640,
        "height": 240,
        "content": "## EDIT THIS NODES"
      },
      "typeVersion": 1
    },
    {
      "id": "e90365b4-0dac-4c57-873b-d9598234d7dc",
      "name": "\ud83e\udd16 AI Agent1",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "notes": "AI-powered flight assistant\n\nCapabilities:\n- Natural language understanding\n- Handles missing info gracefully\n- Calls appropriate flight search tools\n- Maintains conversation context\n- Formats Telegram HTML responses\n\nSystem prompt simplified to 'Same old prompt'",
      "position": [
        2592,
        1200
      ],
      "parameters": {
        "text": "={{ $json.message.text }}",
        "options": {
          "systemMessage": "=## 1. ROLE & LIMITATIONS\nYou are a professional flight search assistant created by Nguyen Thieu Toan. Your response style must be: **Concise \u2013 Direct \u2013 Efficient**.  \nYour main tasks are: analyze user requests, call the appropriate flight search tool, and return results formatted in **Telegram HTML**.\n\n**IMPORTANT:** You CANNOT automatically find \u201cthe cheapest day of the month\u201d or scan prices across a wide date range. You can only check ticket prices when the user provides **specific and exact details**.\n\n---\n\n## 2. TOOLS\nYou have 2 tools, both of which **MUST** include at least 3 required parameters:  \n`origin` (Departure), `destination` (Arrival), `date` (Departure date).\n\n1. `flight_search_round_trip`: Search for round-trip tickets.  \n   * *Additional parameter:* `return_date` (Return date). If missing, apply the \u201cDefault Logic\u201d rule.  \n2. `flight_search_one_way`: Search for one-way tickets.\n\n---\n\n## 3. CONTEXT\n* Current date: {{ $now }}  \n* Tomorrow: {{ $now.plus(1,'days') }}  \n* Weekend: Saturday and Sunday of this week  \n\n---\n\n## 4. INSTRUCTIONS\n\n### 4.1. Tool Invocation Conditions (Strict Logic)\n* **Only call a tool when all 3 parameters are present:** Origin, Destination, Departure Date.  \n* If any of these are missing \u2192 **Stop and ask the user** (Do NOT invent origin/destination).  \n* **Handling \u201ccheapest day\u201d requests:** If the user asks \u201cWhich day this month is cheapest?\u201d, respond:  \n  *\u201cI need a specific departure date to check ticket prices. Which day do you plan to travel?\u201d*  \n  (Do NOT attempt to guess.)\n\n### 4.2. Default Logic (Only applies when Departure Date is provided)\n* **Round-trip default (5 days):** If the user requests a round-trip, provides a departure date but NO return date \u2192 Automatically set return date = Departure date + 5 days. You MUST inform the user about this assumption.\n\n### 4.3. Response Format (Telegram HTML)\n* Allowed tags: `<b>`, `<i>`, `<code>`, `<a href=\"...\">`  \n* Structure:  \n  1. **Header** (Route + Date): Bold  \n  2. **Ticket list** (Airline \u2013 Time \u2013 Price): Concise  \n  3. **Warning** (if default 5-day logic applied): Italic `<i>`  \n  4. **Follow-up question (Mandatory)**  \n\n---\n\n## 5. FEW-SHOT EXAMPLES\n\n**User:** Find tickets to Nha Trang next month.  \n**Assistant:**  \n* **Thought:** Destination provided (Nha Trang), but missing origin and exact date (only \u201cnext month\u201d \u2192 too broad, tool cannot run).  \n* **Response:**  \n    To check ticket prices accurately, I need more specific details.  \n\n    \u2753 From which city will you depart, and on which exact date next month?\n\n---\n\n**User:** Search for tickets Hanoi \u2192 Ho Chi Minh City on October 20.  \n**Assistant:**  \n* **Thought:** All 3 parameters provided (Origin: HAN, Destination: SGN, Date: 2026-10-20). No round-trip mentioned \u2192 Use One-way.  \n* **Tool Call:**  \n  `flight_search_one_way(origin=\"HAN\", destination=\"SGN\", date=\"2026-10-20\")`  \n* **Response:**  \n    \u2708\ufe0f <b>Hanoi (HAN) \u279c Ho Chi Minh City (SGN) on Oct 20:</b>  \n\n    1. <b>Vietjet Air</b>: 06:00 \u2013 08:00 | <b>900,000 VND</b>  \n    2. <b>Vietnam Airlines</b>: 10:00 \u2013 12:00 | <b>1,500,000 VND</b>  \n\n    \u2753 Would you like me to also search for return tickets?\n\n---\n\n**User:** Round-trip Da Nang \u2192 Bangkok tomorrow.  \n**Assistant:**  \n* **Thought:** Origin: DAD, Destination: BKK, Date: Tomorrow. Round-trip requested. Return date missing \u2192 Apply default +5 days.  \n* **Tool Call:**  \n  `flight_search_round_trip(origin=\"DAD\", destination=\"BKK\", departure_date=\"{{ $now.plus(1,'days') }}\", return_date=\"{{ $now.plus(6,'days') }}\")`  \n* **Response:**  \n    \ud83c\uddf9\ud83c\udded <b>Round-trip Da Nang (DAD) \u279c Bangkok (BKK) tomorrow:</b>  \n\n    1. <b>AirAsia</b>: 14:00 \u2013 15:30 | <b>2,800,000 VND</b>  \n    2. <b>Vietjet</b>: 18:00 \u2013 19:30 | <b>2,650,000 VND</b>  \n\n    <i>\u26a0\ufe0f Return date has been set to 5 days after departure by default.</i>  \n\n    \u2753 Would you like to choose a different return date?\n\n---\n\n**User:** Which day is cheapest to fly to Phu Quoc?  \n**Assistant:**  \n* **Response:**  \n    I cannot automatically scan for the cheapest day of the month.  \n\n    \u2753 Could you provide a specific departure date so I can check ticket prices?\n"
        },
        "promptType": "define"
      },
      "typeVersion": 3.1
    },
    {
      "id": "a35f698a-6ac2-4bc9-8210-9f564a758927",
      "name": "\ud83e\udde0 Google Gemini Model1",
      "type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
      "notes": "Language model for AI Agent\n\nModel: gemini-2.0-flash-exp\nProvider: Google AI Studio\n\nGet free API key:\nhttps://aistudio.google.com/app/apikey",
      "position": [
        2480,
        1424
      ],
      "parameters": {
        "options": {}
      },
      "credentials": {
        "googlePalmApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "2a037dad-725c-40f0-bd8e-2ef8b9527750",
      "name": "\ud83d\udd04 Round Trip Search1",
      "type": "n8n-nodes-serpapi.serpApiTool",
      "notes": "AI Tool: Round-trip flight search\n\nRequired parameters:\n- Departure airport (IATA code)\n- Arrival airport (IATA code)\n- Outbound date (yyyy-MM-dd)\n- Return date (yyyy-MM-dd)\n\nCurrency: USD",
      "position": [
        2736,
        1424
      ],
      "parameters": {
        "operation": "google_flights",
        "arrival_id": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Arrival_airport_code___location_kgmid__arrival_id_', `Arrival airport code, e.g., HAN, SGN, BKK...`, 'string') }}",
        "return_date": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Return_Date__return_date_', `Return date, format yyyy-MM-dd`, 'string') }}",
        "departure_id": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Departure_airport_code___location_kgmid__departure_id_', `Departure airport code, e.g., HAN, SGN, BKK...`, 'string') }}",
        "outbound_date": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Outbound_Date__outbound_date_', `Outbound date, format yyyy-MM-dd`, 'string') }}",
        "requestOptions": {},
        "additionalFields": {
          "gl": "vn",
          "hl": "en",
          "currency": "USD"
        }
      },
      "credentials": {
        "serpApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "0b6635a3-54de-4151-9135-47fe45a7bec6",
      "name": "\u27a1\ufe0f One-Way Search1",
      "type": "n8n-nodes-serpapi.serpApiTool",
      "notes": "AI Tool: One-way flight search\n\nRequired parameters:\n- Departure airport (IATA code)\n- Arrival airport (IATA code)\n- Outbound date (yyyy-MM-dd)\n\nCurrency: USD",
      "position": [
        2864,
        1424
      ],
      "parameters": {
        "type": "2",
        "operation": "google_flights",
        "arrival_id": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Arrival_airport_code___location_kgmid__arrival_id_', `Arrival airport code, e.g., HAN, SGN, BKK...`, 'string') }}",
        "departure_id": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Departure_airport_code___location_kgmid__departure_id_', `Departure airport code, e.g., HAN, SGN, BKK...`, 'string') }}",
        "outbound_date": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Outbound_Date__outbound_date_', `Outbound date, format yyyy-MM-dd`, 'string') }}",
        "requestOptions": {},
        "additionalFields": {
          "gl": "vn",
          "hl": "en",
          "currency": "USD"
        }
      },
      "credentials": {
        "serpApi": {
          "name": "<your credential>"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "fb4e98e5-7016-4100-835b-a78fabb96600",
      "name": "\ud83e\udde0 Conversation Memory1",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "notes": "Maintains chat context per user\n\nSession Key: Telegram user ID\nWindow: Recent messages only\n\nEnables:\n- Follow-up questions\n- Context understanding\n- Natural conversation flow",
      "position": [
        2608,
        1424
      ],
      "parameters": {
        "sessionKey": "={{ $json.message.from.id }}",
        "sessionIdType": "customKey"
      },
      "typeVersion": 1.3
    }
  ],
  "connections": {
    "\ud83e\udd16 AI Agent1": {
      "main": [
        [
          {
            "node": "\ud83d\udce8 Send Response",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "\u2699\ufe0f Edit Fields": {
      "main": [
        [
          {
            "node": "\u2708\ufe0f Google Flights Search",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "\u23f0 Schedule Trigger": {
      "main": [
        [
          {
            "node": "\u2699\ufe0f Edit Fields",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "\ud83d\udd0d Filter by Price": {
      "main": [
        [
          {
            "node": "\ud83d\udcf1 Send Alert",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "\ud83d\udcac Telegram Trigger": {
      "main": [
        [
          {
            "node": "\ud83e\udd16 AI Agent1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "\u27a1\ufe0f One-Way Search1": {
      "ai_tool": [
        [
          {
            "node": "\ud83e\udd16 AI Agent1",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "\ud83d\udcb0 Extract Best Price": {
      "main": [
        [
          {
            "node": "\ud83d\udd0d Filter by Price",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "\ud83d\udd04 Round Trip Search1": {
      "ai_tool": [
        [
          {
            "node": "\ud83e\udd16 AI Agent1",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "\ud83e\udde0 Conversation Memory1": {
      "ai_memory": [
        [
          {
            "node": "\ud83e\udd16 AI Agent1",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "\ud83e\udde0 Google Gemini Model1": {
      "ai_languageModel": [
        [
          {
            "node": "\ud83e\udd16 AI Agent1",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "\u2708\ufe0f Google Flights Search": {
      "main": [
        [
          {
            "node": "\ud83d\udcb0 Extract Best Price",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• googlePalmApi
• serpApi
• telegramApi

About this workflow

A comprehensive flight price monitoring and AI assistant solution built entirely in n8n. Combines automated price tracking with intelligent conversational flight search via Telegram.

Source: https://n8n.io/workflows/12971/ — original creator credit. Request a take-down →

More AI & RAG workflows → · Browse all categories →

Related workflows

Workflows that share integrations, category, or trigger type with this one. All free to copy and import.