Provides flight search capabilities via Google Flights, including one-way, round-trip, and multi-city itineraries with support for travel class, airline alliances, and currency preferences.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@google-flights-mcp Search one-way flights from ZRH to NRT on April 5"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP server for Google Flights search via SerpApi. Optimized for Business/First class, Star Alliance, multi-city itineraries with EUR pricing.
search_flights — One-way or round-trip search
search_multi_city — Multi-leg itineraries (2-5 legs)
get_booking_options — Direct airline booking links
get_usage — Monthly API usage tracker
All defaults are configurable via environment variables in your MCP config:
Env var | Default | Description |
| (required) | Your SerpApi API key |
|
| 1=Economy, 2=Premium Economy, 3=Business, 4=First |
|
| Airline/alliance filter |
|
| Price currency |
|
| Google locale (affects pricing region) |
|
| Language |
|
| Number of passengers |
|
| Preferred connection airports |
|
| Home airports |
|
| Max flight results per search |
|
| Monthly search budget |
|
| Cache duration in ms (1hr) |
|
| Cache directory path |
Example with custom settings:
{
"mcpServers": {
"google-flights": {
"command": "node",
"args": ["/path/to/google-flights-mcp/dist/index.js"],
"env": {
"SERPAPI_KEY": "your-key",
"DEFAULT_TRAVEL_CLASS": "1",
"DEFAULT_AIRLINES": "",
"DEFAULT_CURRENCY": "USD",
"DEFAULT_GL": "us"
}
}
}
}Related MCP server: Google Flights MCP
Sign up at serpapi.com — free tier gives 100 searches/month.
npm install
npm run buildAdd to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or equivalent:
{
"mcpServers": {
"google-flights": {
"command": "node",
"args": ["/absolute/path/to/google-flights-mcp/dist/index.js"],
"env": {
"SERPAPI_KEY": "your-key-here"
}
}
}
}Add to ~/.claude/mcp.json:
{
"mcpServers": {
"google-flights": {
"command": "node",
"args": ["/absolute/path/to/google-flights-mcp/dist/index.js"],
"env": {
"SERPAPI_KEY": "your-key-here"
}
}
}
}"Find Business class flights from VIE to NRT, departing March 15 returning March 25"
"Search multi-city: VIE→NRT March 15, NRT→BKK March 20, BKK→VIE March 25"
"Get booking options for this flight" (uses booking_token from search results)
Responses are cached locally for 1 hour (matching SerpApi's server-side cache). Cached searches don't count against the 100/month limit. Cache files stored in .cache/ directory.
Every tool response includes a usage footer showing current consumption:
📊 API Usage: 43/100 searches used (57 remaining) · Resets March 1, 2026Multi-city searches cost 1 API call per leg (a 3-leg trip = 3 searches).
npm run dev # Watch mode
npm run build # Build once
npm start # Run serverOne real API call per endpoint to capture fixtures, then mock everything:
# Capture fixtures (one-time, needs SERPAPI_KEY)
SERPAPI_KEY=xxx npx ts-node test/capture-fixtures.ts
# Run tests (no API key needed)
npm testGet direct airline booking links and prices for selected flights. Requires a booking_token from a previous search result. Returns airline-direct and third-party booking URLs with prices.
Inputs: booking_token (required).
Check current monthly SerpApi usage against the free tier limit (100 searches/month). Cached searches are free and not counted.
Inputs: no named parameters.
Search for one-way or round-trip flights. Returns Business class, Star Alliance results by default with EUR pricing. Use for simple A→B or A→B→A searches.
Inputs: arrival_id (required), departure_id (required), outbound_date (required), stops, +4 more.
Search for multi-city/multi-leg flights (2-5 legs). Primary tool for complex itineraries. Returns Leg 1 options first — use departure_token from results to fetch subsequent legs. Each leg costs 1 API search. Defaults: Business class, Star Alliance, EUR.
Inputs: legs (required), airlines, travel_class, departure_token.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
Loading tool schema changelog…
Scored across 4 tools
search_flights and search_multi_city are distinct in scope (simple vs. multi-leg), and get_booking_options and get_usage serve clearly different purposes. Minor potential confusion between search_flights and search_multi_city for 2-leg itineraries, but descriptions provide clear guidance.
All tools follow a consistent snake_case verb_noun pattern (get_booking_options, search_flights, search_multi_city, get_usage). No deviations in convention.
Four tools cover the essential workflow: searching flights (simple and multi-city), booking, and usage monitoring. Each tool is necessary and well-scoped for the purpose.
Covers flight search, booking options, and usage tracking, which are core to the domain. Missing operations like cancellation or booking completion, but booking links are provided for external completion.
Flight search MCP server providing search, pagination, and itinerary details for AI assistants.
Search and compare flight offers through a cache-aware Streamable HTTP MCP server for AI agents.
Real-time Google Flights fares for agents. Three things people do with this server. Scan for deals: one call takes a date range and a list of destination airports, expands every combination server side, and returns each fare with Google's own low, typical or high verdict. Put live search in your app: flat JSON with a bookable link on every result, and round trips priced as paired legs. Run a 24/7 AI travel agent: add the server, sign in with Google, and schedule it. No ads, no sponsored content. You bring your own RapidAPI key, so every search is billed to your plan and never to anyone else's. Add https://flights.flightpowers.com/mcp , click Sign in, sign in with Google, and paste your RapidAPI key once on the page that opens. Scripts and clients without a sign-in button send the key as x-rapidapi-key on the same URL.
Geo-based flight search MCP server. Find more flights between any two places on earth
