We're LetsFG — a community of travelers.

Finding a flight shouldn't mean checking 47 websites. Or 3 hours of searching. Or having that feeling you could've got a better deal if you'd just waited a little longer.

So we built something about it. No markup. No tracking. No price that goes up because you looked twice.

Join the community. Help others find cheaper flights. Spread the word.⭐ Star the repo. Share with a friend ✈️

Your AI agent just learned to book flights.

400+ airlines. Real prices. One function call.

LetsFG gives your AI agent flight search and booking superpowers. 200+ connectors fire in parallel on your machine, scanning the entire world for the cheapest price. Zero markup. Real airline tickets.

The same flight costs $20–$50 less because you skip OTA inflation, cookie tracking, and surge pricing.

Supporters

Real prices: LetsFG vs Google Flights

We searched 5 routes on Google Flights and LetsFG on the same day (June 15, 2026). Same airline, same itinerary — LetsFG was cheaper every time:

$116 saved across 6 flights. Google Flights inflates further on repeat searches. LetsFG returns the raw airline price every time.

Why the difference? Google Flights only searches its own limited set of airline partners. LetsFG searches everywhere — 200+ connectors including Skyscanner, Kiwi, Kayak, Momondo, plus direct airline websites (Ryanair, United, Southwest, EasyJet, Spirit, Norwegian, AirAsia, and 190+ more). More sources = better prices. And unlike travel websites, LetsFG returns the raw price with zero markup, no tracking, no inflation.

Related MCP server: Flights MCP

Try it right now — no install needed

Don't want to install anything? Message our AI assistant and search flights instantly:

💬 Try it on Messenger   ·   📸 Try it on Instagram

Ask it anything: "Find me the cheapest flight from London to Barcelona next month" — it searches 200 airlines in real time and gives you the best deals.

When you're ready to integrate it into your own agent, keep reading.

Pricing

Local = 100% free. The CLI, Python SDK, npm packages, and local MCP server run 200+ connectors covering 400+ airlines on your machine. No API key needed, no fees, no limits.

Messenger/Instagram = free search + small unlock fee. When you chat with us on Messenger/Instagram, search is completely free. We charge 1% of the ticket price (min $1) to unlock offer details. Booking is at the raw airline price — zero markup.

💡 Know someone who travels? The more people discover LetsFG, the more airlines we cover — and the better it gets for everyone. ⭐ Star · Share with a friend

Why developers star this repo

Get started in 30 seconds

pip install letsfg

Search flights immediately — no API key, no registration, no account needed:

letsfg search LHR BCN 2026-06-15

That single command fires 200+ connectors on your machine and returns real-time prices from 400+ airlines. Free. Unlimited. Zero setup.

Short on time? Use --mode fast to search only OTAs + key airlines (~25 connectors, 20-40s instead of 6+ min):

letsfg search LHR BCN 2026-06-15 --mode fast

Flying business or first? Filter by cabin class — only get results that match:

letsfg search LHR JFK 2026-06-15 --cabin C    # business class
letsfg search LHR JFK 2026-06-15 --cabin F    # first class
letsfg search LHR JFK 2026-06-15 --cabin W    # premium economy

Want to unlock and book? Star the repo for free access:

# Star the repo on GitHub, then verify
letsfg star --github your-username

The CLI auto-registers behind the scenes and saves your API key to ~/.letsfg/config.json. No manual steps.

# Search (free, unlimited)
letsfg search LON BCN 2026-04-01 --return 2026-04-08 --sort price

# Unlock (confirms live price, holds for 30 min — free)
letsfg unlock off_xxx

# Book (ticket price only, zero markup)
letsfg book off_xxx \
  --passenger '{"id":"pas_0","given_name":"John","family_name":"Doe","born_on":"1990-01-15","gender":"m","title":"mr"}' \
  --email john.doe@example.com

💡 Like what you see? Support us — ⭐ Star · Share with a friend

Works everywhere your agent runs

MCP Server (Claude Desktop / Cursor / Windsurf / OpenClaw)

{
  "mcpServers": {
    "letsfg": {
      "command": "npx",
      "args": ["-y", "letsfg-mcp"]
    }
  }
}

That's it — search works immediately, no API key needed. 200+ connectors covering 400+ airlines run locally.

{
  "mcpServers": {
    "letsfg": {
      "command": "npx",
      "args": ["-y", "letsfg-mcp"],
      "env": {
        "LETSFG_API_KEY": "trav_your_api_key"
      }
    }
  }
}

Get a key: letsfg register --name my-agent --email you@example.com

5-minute quickstarts: Claude Desktop · Cursor · Windsurf

Python SDK

from letsfg import LetsFG

bt = LetsFG()  # reads LETSFG_API_KEY from env
flights = bt.search("LHR", "JFK", "2026-04-15")
print(f"{flights.total_results} offers, cheapest: {flights.cheapest.summary()}")

JavaScript SDK

import { LetsFG } from 'letsfg';

const bt = new LetsFG({ apiKey: 'trav_...' });
const flights = await bt.search('LHR', 'JFK', '2026-04-15');
console.log(`${flights.totalResults} offers`);

Local-only (no API key, no backend)

from letsfg.local import search_local

result = await search_local("GDN", "BCN", "2026-06-15")

# Fast mode — OTAs + key airlines only, 20-40s
result = await search_local("GDN", "BCN", "2026-06-15", mode="fast")

for offer in result.offers[:5]:
    print(f"{offer.airlines[0]}: {offer.currency} {offer.price}")

Install

CLI Commands

All commands accept --json for structured output and --api-key to override the env variable.

How it works

Search (free) → Unlock (free) → Book (ticket price only)

1. Search — 200+ local connectors fire in parallel on your machine, covering 400+ airlines. Filter by cabin class (economy, premium, business, first). Returns full details: price, airlines, duration, stopovers, conditions.

2. Unlock — confirms the live price with the airline and reserves the fare for 30 minutes.

3. Book — creates a real airline PNR. E-ticket sent to the passenger's inbox.

All search runs locally via Playwright + httpx. Results are deduplicated, currency-normalized, and sorted. Best price wins.

The combo engine builds cross-airline round-trips by combining one-way fares from different carriers. A Ryanair outbound + Wizz Air return can save 30-50% vs booking a round-trip on either airline alone.

Search a city code and LetsFG automatically searches all airports in that city. LON expands to LHR, LGW, STN, LTN, SEN, LCY. NYC expands to JFK, EWR, LGA. Works for 25+ major cities worldwide.

Architecture

┌─────────────────────────────────────────────────────┐
│  AI Agents / CLI / SDK / MCP Server                 │
├─────────────────────────────────────────────────────┤
│  Local connectors (200+ connectors, 400+ airlines)  │
│  Ryanair, EasyJet, Spirit, Southwest, AirAsia, etc  │
├─────────────────────────────────────────────────────┤
│  Dedup + Combo Engine + Currency Normalization      │
│  (virtual interlining for cross-airline round-trips)│
├─────────────────────────────────────────────────────┤
│  Backend API (unlock, book, telemetry)              │
└─────────────────────────────────────────────────────┘

Star History

Documentation · Connector Health · PyPI · npm · Smithery · Messenger · Instagram

Open source · MIT License · Made with ❤️ by travelers, for travelers

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