Flight Search

io.github.arjunprabhulalPublished by GitHub account arjunprabhulalv0.3.0Updated Oct 24, 2026

Search Google Flights through SerpApi: one-way and round-trip flights by IATA airport code.

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Server details

Identifier: io.github.arjunprabhulal/mcp-flight-search
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Oct 15, 2026

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Overview

AI-generated overview

A local MCP server that searches Google Flights via SerpApi, returning one-way and round-trip options by IATA airport code.

What you can do: Search flights between two airports by IATA code, with optional return date for round trips, returning airline, price in USD, duration, stops, departure and arrival times, and cabin class. Check server status and version.
When to use it: Useful when an assistant should look up flight options and prices for a trip between two airports, for example comparing one-way or round-trip itineraries before booking elsewhere.
Requirements: Runs locally as a Python package (Python 3.10+ or uv, launched with uvx or pip install) or via Docker. Requires a SerpApi key supplied in the SERP_API_KEY environment variable and network access to SerpApi.

Before you install

The SerpApi key is a secret passed in SERP_API_KEY; keep it out of shared configs. Queries and airport codes are sent to SerpApi, and usage may count against your SerpApi plan or quota. Results are read-only lookups; no bookings are made.

Installation

In SourceWeft

Open Flight Search in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

MCP Flight Search

An MCP server that searches Google Flights through SerpApi, for Claude, Cursor and other MCP clients. One-way and round-trip searches by IATA airport code, with prices, durations, stops and times.

[CI] [PyPI]

Requirements

Python 3.10 or later (or uv)
A SerpApi key in SERP_API_KEY (serpapi.com has a free tier)

Use it from an MCP client

Add it to your client's MCP configuration (Claude Desktop, Claude Code, Cursor, ...):

json

{  "mcpServers": {    "flight-search": {      "command": "uvx",      "args": ["mcp-flight-search"],      "env": { "SERP_API_KEY": "your-serpapi-key" }    }  }}

{  "mcpServers": {    "flight-search": {      "command": "uvx",      "args": ["mcp-flight-search"],      "env": { "SERP_API_KEY": "your-serpapi-key" }    }  }}

Or install it with pip install mcp-flight-search and use "command": "mcp-flight-search".

Run it yourself

bash

export SERP_API_KEY="your-serpapi-key"mcp-flight-search                                    # stdio (default)mcp-flight-search --connection_type http --port 3001 # Streamable HTTP at http://127.0.0.1:3001/mcp

export SERP_API_KEY="your-serpapi-key"mcp-flight-search                                    # stdio (default)mcp-flight-search --connection_type http --port 3001 # Streamable HTTP at http://127.0.0.1:3001/mcp

LOG_LEVEL=DEBUG shows more detail on stderr. The API key is never logged.

With Docker:

bash

docker build -t mcp-flight-search .docker run -i --rm -e SERP_API_KEY=your-serpapi-key mcp-flight-search

docker build -t mcp-flight-search .docker run -i --rm -e SERP_API_KEY=your-serpapi-key mcp-flight-search

Tools

Tool	What it does
`search_flights_tool`	Flights between two airports. `origin`, `destination`: IATA codes such as `ATL`, `LAX`. `outbound_date`: `YYYY-MM-DD`. `return_date` (optional): `YYYY-MM-DD` for a round trip. Returns structured results: airline, price (USD), duration, stops, departure, arrival, cabin class.
`server_status`	Checks the server is running and reports its version.

Development

License

MIT

Source: README.md at commit c379625

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.3.0LatestOct 15, 2026

Score

50% of the applicable checks met

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Reached in the last 30 days25 pts
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Auth declared10 pts
Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.
Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts