A Python wrapper for Google Flights API
Project description
🛫 Fli - Flight Search MCP Server and Library
A powerful Python library that provides programmatic access to Google Flights data with an elegant CLI interface. Search flights, find the best deals, and filter results with ease.
🚀 What makes
flispecial? Unlike other flight search libraries that rely on web scraping, Fli directly interacts with Google Flights' API through reverse engineering. This means:
- Fast: Direct API access means faster, more reliable results
- Zero Scraping: No HTML parsing, no browser automation, just pure API interaction
- Reliable: Less prone to breaking from UI changes
- Modular: Extensible architecture for easy customization and integration
MCP Server
pipx install flights
# Run the MCP server on STDIO
fli-mcp
# Run the MCP server over HTTP (streamable)
fli-mcp-http # serves at http://127.0.0.1:8000/mcp/
Connecting to Claude Desktop
{
"mcpServers": {
"fli": {
"command": "/Users/<user>/.local/bin/fli-mcp"
}
}
}
Note: Replace
<user>with your actual username. You can also find the path to the MCP server by runningwhich fli-mcpin your terminal.
Quick Start
pip install flights
# Install using pipx (recommended for CLI)
pipx install flights
# Get started with CLI
fli --help
Features
-
🔍 Powerful Search
- One-way flight searches
- Flexible departure times
- Multi-airline support
- Cabin class selection
- Stop preferences
- Custom result sorting
-
💺 Cabin Classes
- Economy
- Premium Economy
- Business
- First
-
🎯 Smart Sorting
- Price
- Duration
- Departure Time
- Arrival Time
-
🛡️ Built-in Protection
- Rate limiting
- Automatic retries
- Comprehensive error handling
- Input validation
CLI Usage
Search for Specific Flights
# Basic search
fli search JFK LHR 2025-10-25
# Advanced search with filters
fli search JFK LHR 2025-10-25 \
-t 6-20 \ # Time range (6 AM - 8 PM)
-a BA KL \ # Airlines (British Airways, KLM)
-s BUSINESS \ # Seat type
-x NON_STOP \ # Non-stop flights only
-o DURATION # Sort by duration
Find Cheapest Dates
# Basic search for cheapest dates
fli cheap JFK LHR
# Advanced search with date range
fli cheap JFK LHR \
--from 2025-01-01 \
--to 2025-02-01 \
--monday --friday # Only Mondays and Fridays
CLI Options
Search Command (fli search)
| Option | Description | Example |
|---|---|---|
-t, --time |
Time range (24h format) | 6-20 |
-a, --airlines |
Airline codes | BA KL |
-s, --seat |
Cabin class | ECONOMY, BUSINESS |
-x, --stops |
Maximum stops | NON_STOP, ONE_STOP |
-o, --sort |
Sort results by | CHEAPEST, DURATION |
Cheap Command (fli cheap)
| Option | Description | Example |
|---|---|---|
--from |
Start date | 2025-01-01 |
--to |
End date | 2025-02-01 |
-s, --seat |
Cabin class | ECONOMY, BUSINESS |
-x, --stops |
Maximum stops | NON_STOP, ONE_STOP |
--[day] |
Day filters | --monday, --friday |
MCP Server Integration
Fli includes a Model Context Protocol (MCP) server that allows AI assistants like Claude to search for flights directly. This enables natural language flight search through conversation.
Running the MCP Server
# Run the MCP server on STDIO
fli-mcp
# Or with uv (for development)
uv run fli-mcp
# Or with make (for development)
make mcp
# Run the MCP server over HTTP (streamable)
fli-mcp-http # serves at http://127.0.0.1:8000/mcp/
Claude Desktop Configuration
To use the flight search capabilities in Claude Desktop, add this configuration to your claude_desktop_config.json:
Location: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS)
{
"mcpServers": {
"flight-search": {
"command": "fli-mcp",
"args": []
}
}
}
After adding this configuration:
- Restart Claude Desktop
- You can now ask Claude to search for flights naturally:
- "Find flights from JFK to LAX on December 25th"
- "What are the cheapest dates to fly from NYC to London in January?"
- "Search for business class flights from SFO to NRT with no stops"
MCP Tools Available
The MCP server provides two main tools:
search_flights: Search for specific flights with detailed filterssearch_cheap_flights: Find the cheapest dates across a flexible date range
Python API Usage
Basic Search Example
from datetime import datetime, timedelta
from fli.models import (
Airport,
PassengerInfo,
SeatType,
MaxStops,
SortBy,
FlightSearchFilters,
FlightSegment
)
from fli.search import SearchFlights
# Create search filters
filters = FlightSearchFilters(
passenger_info=PassengerInfo(adults=1),
flight_segments=[
FlightSegment(
departure_airport=[[Airport.JFK, 0]],
arrival_airport=[[Airport.LAX, 0]],
travel_date=(datetime.now() + timedelta(days=30)).strftime("%Y-%m-%d"),
)
],
seat_type=SeatType.ECONOMY,
stops=MaxStops.NON_STOP,
sort_by=SortBy.CHEAPEST,
)
# Search flights
search = SearchFlights()
flights = search.search(filters)
# Process results
for flight in flights:
print(f"💰 Price: ${flight.price}")
print(f"⏱️ Duration: {flight.duration} minutes")
print(f"✈️ Stops: {flight.stops}")
for leg in flight.legs:
print(f"\n🛫 Flight: {leg.airline.value} {leg.flight_number}")
print(f"📍 From: {leg.departure_airport.value} at {leg.departure_datetime}")
print(f"📍 To: {leg.arrival_airport.value} at {leg.arrival_datetime}")
Running Examples
We provide 11 comprehensive examples in the examples/ directory that demonstrate various use cases:
# Run examples with uv (recommended)
uv run python examples/basic_one_way_search.py
uv run python examples/round_trip_search.py
uv run python examples/date_range_search.py
# Or install dependencies first, then run directly
pip install pydantic curl_cffi httpx
python examples/basic_one_way_search.py
Available Examples:
basic_one_way_search.py- Simple one-way flight searchround_trip_search.py- Round-trip flight bookingdate_range_search.py- Find cheapest datescomplex_flight_search.py- Advanced filtering and multi-passengertime_restrictions_search.py- Time-based filteringdate_search_with_preferences.py- Weekend filteringprice_tracking.py- Price monitoring over timeerror_handling_with_retries.py- Robust error handlingresult_processing.py- Data analysis with pandascomplex_round_trip_validation.py- Advanced round-trip with validationadvanced_date_search_validation.py- Complex date search with filtering
💡 Tip: Examples include automatic dependency checking and will show helpful installation instructions if dependencies are missing.
Examples
For comprehensive examples demonstrating all features, see the examples/ directory:
# Quick test - run a simple example
uv run python examples/basic_one_way_search.py
# Run all examples to explore different features
uv run python examples/round_trip_search.py
uv run python examples/complex_flight_search.py
uv run python examples/price_tracking.py
Example Categories:
- Basic Usage: One-way, round-trip, date searches
- Advanced Filtering: Time restrictions, airlines, seat classes
- Data Analysis: Price tracking, result processing with pandas
- Error Handling: Retry logic, robust error management
- Complex Scenarios: Multi-passenger, validation, business rules
Each example is self-contained and includes automatic dependency checking with helpful installation instructions.
Development
# Clone the repository
git clone https://github.com/punitarani/fli.git
cd fli
# Install dependencies with uv
uv sync --all-extras
# Run tests
uv run pytest
# Run linting
uv run ruff check .
uv run ruff format .
# Build documentation
uv run mkdocs serve
# Or use the Makefile for common tasks
make install-all # Install all dependencies
make test # Run tests
make lint # Check code style
make format # Format code
Contributing
Contributions are welcome! Please feel free to submit a Pull Request.
License
This project is licensed under the MIT License — see the LICENSE file for details.
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