Google Flights MCP Server

This MCP server provides tools to interact with Google Flights data using the bundled fast_flights library.

Features

Provides the following MCP tools:

• get_flights_on_date: Fetches available one-way flights for a specific date between two airports.
  • Args: origin (str), destination (str), date (str, YYYY-MM-DD), adults (int, optional), seat_type (str, optional), return_cheapest_only (bool, optional, default False).
• get_round_trip_flights: Fetches available round-trip flights for specific departure and return dates.
  • Args: origin (str), destination (str), departure_date (str, YYYY-MM-DD), return_date (str, YYYY-MM-DD), adults (int, optional), seat_type (str, optional), return_cheapest_only (bool, optional, default False).
• find_all_flights_in_range: Finds available round-trip flights within a specified date range. Can optionally return only the cheapest flight found for each date pair.
  • Args: origin (str), destination (str), start_date_str (str, YYYY-MM-DD), end_date_str (str, YYYY-MM-DD), min_stay_days (int, optional), max_stay_days (int, optional), adults (int, optional), seat_type (str, optional), return_cheapest_only (bool, optional, default False).

Setup

1. Clone the repository:

   git clone https://github.com/opspawn/Google-Flights-MCP-Server.git
   cd Google-Flights-MCP-Server

2. Create a virtual environment (recommended):

   python -m venv .venv
   source .venv/bin/activate  # On Windows use `.venv\Scripts\activate`

3. Install dependencies:

   pip install -r requirements.txt

4. Install Playwright browsers (needed by fast_flights):

   playwright install

Running the Server

You can run the server directly using Python:

python server.py

The server uses STDIO transport by default.

Integrating with MCP Clients (e.g., Cline, Claude Desktop)

Add the server to your MCP client's configuration file. Example for cline_mcp_settings.json or claude_desktop_config.json:

{
  "mcpServers": {
    "google-flights": {
      "command": "/path/to/your/.venv/bin/python", // Use absolute path to venv python
      "args": [
        "/absolute/path/to/flight_mcp_server/server.py" // Use absolute path to server script
      ],
      "env": {},
      "disabled": false,
      "autoApprove": []
    }
    // ... other servers
  }
}

Important: Replace the paths in command and args with the absolute paths to your virtual environment's Python executable and the server.py script on your system.

Notes

• This server bundles the fast_flights library (originally from https://github.com/AWeirdDev/flights) for its core flight scraping functionality. Please refer to the included LICENSE file for its terms.
• Flight scraping can sometimes be unreliable or slow depending on Google Flights changes and network conditions. The tools include basic error handling.
• The find_all_flights_in_range tool can be resource-intensive as it checks many date combinations.