Find Flights MCP Server

MCP server for searching and retrieving flight information using Duffel API.

How it Works

Video Demo

https://github.com/user-attachments/assets/c111aa4c-9559-4d74-a2f6-60e322c273d4

Why This is Helpful

While tools like Google Flights work great for simple trips, this tool shines when dealing with complex travel plans. Here's why:

• Contextual Memory: Claude remembers all your previous flight searches in the chat, so you don't need to keep multiple tabs open to compare prices
• Flexible Date Search: Easily search across multiple days to find the best prices without manually checking each date
• Complex Itineraries: Perfect for multi-city trips, one-stop flights, or when you need to compare different route options you can just ask!
• Natural Conversation: Just describe what you're looking for - no more clicking through calendar interfaces or juggling search parameters down to parsing city names, dates, and times.

Think of it as having a travel agent in your chat who remembers everything you've discussed and can instantly search across dates and routes.

Features

• Search for flights between multiple destinations
• Support for one-way, round-trip, and multi-city flight queries
• Detailed flight offer information
• Flexible search parameters (departure times, cabin class, number of passengers)
• Automatic handling of flight connections
• Search for flights within multiple days to find the best flight for your trip (slower)

Prerequisites

• Python 3.x
• Duffel API Live Key

Getting Your Duffel API Key

Duffel requires account verification and payment information setup, but this MCP server only uses the API for searching flights - no actual bookings or charges will be made to your account.

Try using duffel_test first to see the power of this tool. If you end up liking it, you can go through the verification process below to use the live key.

Test Mode First (Recommended)

You can start with a test API key (duffel_test) to try out the functionality with simulated data before going through the full verification process:

1. Visit Duffel's registration page
2. Create an account (you can select "Personal Use" for Company Name)
3. Navigate to More > Developer to find your test API key (one is already provided)

Getting a Live API Key

To access real flight data, follow these steps:

1. In the Duffel dashboard, toggle "Test Mode" off in the top left corner
2. The verification process requires multiple steps - you'll need to toggle test mode off repeatedly:
   • First toggle: Verify your email address
   • Toggle again: Complete company information (Personal Use is fine)
   • Toggle again: Add payment information (required by Duffel but NO CHARGES will be made by this MCP server)
   • Toggle again: Complete any remaining verification steps
   • Final toggle: Access live mode after clicking "Agree and Submit"
3. Once fully verified, go to More > Developer > Create Live Token
4. Copy your live API key

💡 TIP: Each time you complete a verification step, you'll need to toggle test mode off again to proceed to the next step. Keep toggling until you've completed all requirements.

⚠️ IMPORTANT NOTES:

• Your payment information is handled directly by Duffel and is not accessed or stored by the MCP server
• This MCP server is READ-ONLY - it can only search for flights, not book them
• No charges will be made to your payment method through this integration
• All sensitive information (including API keys) stays local to your machine
• You can start with the test API key (duffel_test) to evaluate the functionality
• The verification process may take some time - this is a standard Duffel requirement

Security Note

This MCP server only uses Duffel's search endpoints and cannot make bookings or charges. Your payment information is solely for Duffel's verific

... View full README on GitHub