DelayPayer

Flight Distance Calculator

Enter two airports and get the great-circle distance in kilometres and miles — the precise figure that decides whether a delayed EU or UK flight is worth €250, €400, or €600. It's calculated entirely in your browser from bundled airport coordinates; no API, no waiting.

Passenger standing by airport windows with an aircraft outside
Your data Stays in your browser
Source logic Rules + distance
Claim path DIY first

Great-circle distance

— km

How to use it

  1. 1 Enter the departure airport's IATA code (the 3 letters on your boarding pass).
  2. 2 Enter the arrival airport's IATA code.
  3. 3 Read the great-circle distance in km and miles.
  4. 4 See which EU261 / UK261 distance band — and amount — it falls into.

Why this matters

EU261 and UK261 don't pay by how far you flew on the airline's route map — they pay by the great-circle distance between your origin and final destination, the shortest path over the curve of the Earth. That single number decides your band: up to 1,500 km, 1,500–3,500 km, or over 3,500 km. Knowing it before you claim means you ask for the right amount. We compute it with the haversine formula from a bundled airport database, so it works instantly and offline.

Frequently asked questions

What is great-circle distance?

It's the shortest distance between two points on the surface of a sphere — here, the straight-line path between two airports over the curve of the Earth. It's almost always shorter than the actual route an aircraft flies, and it's the exact measure EU261/UK261 uses to set compensation.

Which distance band is my flight in?

Up to 1,500 km is the lowest band (€250 / £220). 1,500–3,500 km is the middle band (€400 / £350). Over 3,500 km is the top band (€600 / £520, possibly halved for a 3–4 hour long-haul delay). Enter your airports above to see exactly where you land.

Keep going

Flight Compensation Checker Enter your route and delay to see instantly if you're owed money. Flight Compensation Calculator See the exact statutory payout by jurisdiction and distance band.