Aviation · SaaS

4fly

Flying-club management software, simple and free.

One platform for everything a flying club needs: 24/7 aircraft booking, maintenance tracking, payments and invoicing, student progression tracking and club communication.

The model is simple: free for the club, with a commission only on card payments. No commitment, GDPR-compliant and designed together with clubs.

Key points

Online aircraft booking
Scheduled maintenance tracking
Integrated payments and invoicing
Training and student follow-up
Club communication

4fly, 4fly, flying club management software

Key figures

60+: clubs logging flights over the last 12 months
36,000+: flights logged, over 31,000 flight hours
33,000+: aircraft bookings
13: languages, across 8 countries

Figures as of 30 September 2026, taken from our production databases.

Notable technology

An MCP server for AI agents

4fly exposes its data and actions (bookings, flights, members, maintenance) to AI agents through an MCP server with 35 tools. Authentication is bound to each conversation: the agent never has more rights than the member asking.

AI email ingestion

Emails received by the club, attachments included, are analysed by AI and turned into proposed documents or news items. A manager approves before anything is published.

Payments, packs and accounting

Card payments (Stripe), prepaid flight-hour packs, member balances and accounting entries generated for every flight, payment or refund.

Flight preparation

Aeronautical weather for the flight date, NOTAMs and pre-flight plan in one place, with go / no-go decision support.

Many clubs, isolated data

Each club's data is isolated (PostgreSQL Row Level Security) with permissions computed per role: pilot, instructor, treasurer, administrator.

Multilingual end to end

The app and website are available in 13 languages, with localised URLs, hreflang tags and a dynamic sitemap for international search.

Tech stack

React 19
TypeScript
Vite
Tailwind CSS
Supabase · PostgreSQL
Stripe
Twilio
Mailjet
MapLibre
Node.js
MCP
OpenAI
Claude

Who is it for?

Flying clubs: aeroplanes, microlights, gliders and helicopters
Flight schools and instructors
Treasurers and club boards
Pilots who book, fly and pay online

Official website : 4fly, flying club management software

Frequently asked questions

Is 4fly really free?

Yes, for the club: no subscription and no setup fee. 4fly only earns a commission on card payments.

Which aircraft types can be managed?

Aeroplanes, microlights, gliders, helicopters and any other bookable aircraft: each has its own record, pricing and maintenance tracking.

Can we import our club's history?

Yes, flight, member and fleet history can be imported. Write to us to scope the import.

Does 4fly work outside France?

Yes: the app is translated into 13 languages and clubs use it in France, Spain, Belgium, the United Kingdom, Ireland, Portugal, Germany and Mauritius.