Using the Google Flights MCP in ChatGPT

ChatGPT can search live flight and hotel data mid-conversation when you connect the FlightPowers MCP servers through developer-mode connectors. Two URLs (flights and hotels) unlock four tools: live Google Flights pricing, Booking.com hotel searches, and the date-range and destination-list expansions that turn a single question into a multi-day scan.

What you need

• ChatGPT Pro or Business plan (developer-mode connectors are a Pro and Business plan feature per OpenAI's own help pages, checked 2026-08-27)
• A RapidAPI key for the

  Google Flights Live API

  and the

  Booking Live API

  . One key covers both once you subscribe to each listing. The free tier (10 requests/month) verifies your config works; the $10 PRO plan (2,500 requests/month) is the realistic floor for a conversational assistant you actually use.

Setting up the MCP connectors

Open ChatGPT Settings, go to Connectors, and enable developer mode. Add each server URL as a connector:

Flights connector:

https://flights.flightpowers.com/mcp?rapidapi_key=YOUR_RAPIDAPI_KEY

Hotels connector:

https://hotels.flightpowers.com/mcp?rapidapi_key=YOUR_RAPIDAPI_KEY

Replace YOUR_RAPIDAPI_KEY with your actual key. Both servers share the same key once you subscribe to each listing on RapidAPI. The key rides on the connector URL in your settings. ChatGPT never sees it in the chat itself. Treat the URL as a secret: anyone who has it can spend your quota.

The tools appear automatically in conversations once the connectors are added.

The four tools

search_oneway_flights: Live one-way flight prices from Google Flights. Pass a single date or a date range (departure_date_from / departure_date_to) and the server expands it internally. Each result includes price, price_as_number, price_range_in_relation_to_other_periods (the context field), and a buy_link that opens the itinerary on Google Flights ready to book.

search_roundtrip_flights: Paired round-trip itineraries with both legs already matched. One object per option with a combined total_price, not two lists to cross-join. Takes a return_date or a trip length in nights.

search_hotels: Live Booking.com destination search. Returns ranked properties with price_string, price_as_number, review_score, room_type, and a booking_link. Accepts the same filters the site offers: review_score_8, free_cancellation, and the rest.

find_hotel_by_name: Availability and price for one named hotel. Takes the name a human would type (add the city to disambiguate a chain) and resolves the property internally. Supports price_as_seen_from, a two-letter country code that prices the stay as a shopper in that market would see it, the field rate-parity checks are built on.

Example prompts

Ask about a specific date. "Find LHR to JFK in mid-October and tell me if the price looks high or low for that week."

Scan for the cheapest option. "Find me the cheapest nonstop from Berlin to Paris in the second week of June."

Plan a trip. "Round trip JFK to London, out September 22, back September 29. Rank the options by value rather than price alone."

Search hotels. "Find a hotel in Tokyo Shibuya for November 3 to 7, 2 adults, breakfast included."

Check rate parity. "Compare what the same room at the Kremlin Palace in Antalya costs when booked from Germany versus the US."

How it works

The servers are hosted at https://flights.flightpowers.com/mcp and https://hotels.flightpowers.com/mcp. Nothing runs on your machine. ChatGPT sends your RapidAPI key with each call (via the connector URL), so usage meters against your own subscription. The free BASIC tier (10 requests/month, hard cap, no card) verifies the config works. A conversational assistant you use daily fits the $10 PRO plan.

Date ranges and destination lists

Both flight tools accept a date range (departure_date_from / departure_date_to) and a list of airports in from_airport and to_airport (comma-separated strings like "JFK,EWR,LGA"). The server expands them internally, so a flexible search is one call where the REST API would be a client-side fan-out of one request per date and destination combination.

When to use this

Use the MCP connectors when you want ChatGPT to search live travel data mid-conversation. The response shape ChatGPT sees is the one production will see. Use the REST API for production traffic and scheduled scans outside ChatGPT.

Related

• FlightPowers on ChatGPT: the full integration overview
• MCP Servers: setup for Claude, Cursor, and other MCP clients
• Open-source agent skills: the same workflows as MIT-licensed skills