google-flights-mcp
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 "Install 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-mcpSearch 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.
google-flights-mcp
MCP server for Google Flights search via SerpApi. Optimized for Business/First class, Star Alliance, multi-city itineraries with EUR pricing.
Features
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
Defaults
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
Setup
1. Get a SerpApi key
Sign up at serpapi.com — free tier gives 100 searches/month.
2. Build
npm install
npm run build3. Configure Claude Desktop
Add 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"
}
}
}
}4. Configure Claude Code
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"
}
}
}
}Usage Examples
Simple round-trip
"Find Business class flights from VIE to NRT, departing March 15 returning March 25"
Multi-city
"Search multi-city: VIE→NRT March 15, NRT→BKK March 20, BKK→VIE March 25"
Booking
"Get booking options for this flight" (uses booking_token from search results)
Caching
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.
API Budget
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).
Development
npm run dev # Watch mode
npm run build # Build once
npm start # Run serverTesting
One 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 testThis server cannot be installed
Maintenance
Resources
Unclaimed servers have limited discoverability.
Looking for Admin?
If you are the server author, to access and configure the admin panel.
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