Telegram Trip Planner n8n Workflow: Gemini + SerpAPI Itineraries

Turn Telegram messages into a ready-to-use trip plan (with Gemini + SerpAPI) — fully automated in n8n

This n8n workflow automatically polls your Telegram chat for new trip requests, uses Google Gemini to extract travel parameters, calculates a budget split, and then generates a grounded, day-by-day itinerary using SerpAPI search results—sending the finished plan back to the same Telegram conversation.

What this workflow does

• Runs every minute and calls the Telegram Bot API getUpdates endpoint to fetch recent user messages.
• Selects one valid new text message, captures chat context, and uses an offset so updates aren’t reprocessed.
• Uses Google Gemini to parse the message into structured trip fields: destination, days, budget, currency, style, interests, and travellers.
• Computes a per-category budget breakdown, builds a planning prompt, and checks for missing required details.
• If anything is missing, sends a Telegram message requesting only the specific fields needed.
• When details are complete, uses Gemini + SerpAPI web search to find real places and generate a structured itinerary with cost estimates and tips.
• Formats the itinerary as an HTML Telegram message including a budget summary, then sends it back to the originating chat.

Use cases

• A traveler chats in Telegram: “Plan a 4-day Tokyo trip for two with a mid-range budget.”
• An automation engineer runs a travel-planning bot for a SaaS onboarding flow, where users provide preferences via chat.
• A support team collects trip preferences conversationally, then replies instantly with a complete itinerary.

Technical details

• Scheduling: n8n executes on a minute-based schedule.
• Telegram integration: Telegram Trigger / polling with getUpdates and send-message steps (requires bot token + Telegram API credentials).
• LLM parsing: Google Gemini to extract trip parameters and generate itinerary content.
• Grounding: SerpAPI search results used during itinerary generation.
• Workflow logic: if, code, and an n8nn8n-nodes-langchainagent node; includes a Sticky Note for workflow guidance.

Setup note: Create a Telegram bot with BotFather, replace REPLACE_WITH_BOT_TOKEN in the Telegram API request URLs, and add Google Gemini credentials and the chosen Gemini model.