Flight distance: the number your compensation depends on
A few kilometres can decide between £220 and £350. The distance used is the great circle between airports, not the route the aircraft flew.
Great-circle distance
1,496 km
| EU261 from 3 h | €250 · up to 1,500 km |
| UK261 from 3 h | £220 · up to 1,500 km |
Prepared by Radif Partners · Method · law as of October 22, 2026 · 4,008 airports (OurAirports)
Under Article 7 of EU261 and UK261 the amount of compensation depends only on distance, and Article 7(4) says how it is measured: by the great-circle route method, the shortest line between the departure and arrival airports over the Earth’s surface. Holding patterns, detours around closed airspace and the airways actually flown do not count. The calculator above uses the coordinates of 4,008 airports from a public-domain database and a sphere of 6,371 km radius. Up to 1,500 km the compensation is €250 or £220, up to 3,500 km €400 or £350, beyond that €600 or £520. Two special rules: within the EU every flight over 1,500 km stays at €400, even Frankfurt to Réunion; and on a connection booked as one journey, the distance runs from the first departure airport to the final destination, not the sum of the legs. UK261 uses the same method with £220, £350 and £520. Close to a boundary, check the figure the airline gives you.
Great circle: the shortest line on a globe
On a flat map, London to New York looks like an arc curving north. On a globe that arc is the shortest route, the great circle. The calculator above works it out from the latitude and longitude of both airports with the haversine formula on a sphere of 6,371 km. The coordinates come from the public-domain OurAirports data, 4,008 airports. The route actually flown is longer, but for EU261 and UK261 that does not matter: Article 7(4) points to the great-circle method.
UK routes and their bands
| Route | Great-circle distance | UK261 at 4 h late |
|---|---|---|
| London Heathrow to Palma | 1,348 km | £220 |
| Edinburgh to Málaga | 2,145 km | £350 |
| Manchester to Tenerife | 3,048 km | £350 |
| London Gatwick to Gran Canaria | 2,879 km | £350 |
| London Heathrow to Dubai | 5,498 km | £520 |
| London Heathrow to New York | 5,540 km | £520 |
Type the kilometres, see the band
EU261 today (up to 1,500 km)
€250
| UK261 | £220 |
| Long haul, 3 to 4 h late | – |
Borderline cases from Germany
The calculator default is Munich to Madrid, 1,496 km, just inside the first band, while Munich to Athens, 1,518 km, just crosses into the second. Marsa Alam in Egypt is 3,518 km from Frankfurt, enough for the top band, but only 3,220 km from Munich. These are the cases where a sloppy distance figure costs you money.
Connections: the whole journey is measured
On a single booking the great circle runs from the first departure to the final destination. Manchester via a Gulf hub to Bangkok counts as 9,631 km, not the sum of the legs. See missed connecting flight.
The intra-EU cap
Article 7(1)(b) of EU261 gives €400 for every intra-Community flight over 1,500 km; the third band applies only when one end is outside the EU. Frankfurt to Réunion, 9,136 km, is further than London to New York but still pays €400. The calculator treats the Canaries, Madeira, the Azores and the French overseas regions as EU, and Iceland, Norway and Switzerland as within the regulation’s scope.