London Heathrow to Philadelphia flight delays: your compensation

Name: London Heathrow–Philadelphia flight punctuality 2025
Creator: UK Civil Aviation Authority

In short: The route is 5,690 km long, so a 3-hour-plus delay or a late cancellation is worth £520 per passenger from London Heathrow (UK261). In 2025, 1.35% of flights on the route were at least 3 hours late and 2.67% were cancelled.

How punctual is the route?

Flights operated: 1,859
On time (≤ 15 min late): 74.1%
3 hours or more late: 1.35%
Cancelled: 2.67%
Average delay: 17.4 min

Source: UK Civil Aviation Authority punctuality statistics 2025 – departures and arrivals combined, measured against the schedule at the UK airport. How we use this data

Of the airlines with at least 200 flights on the route, British Airways had the lowest share of 3-hour-plus delays (0.55%) and American Airlines the highest (1.86%). A single bad day can move these figures, so read them as a guide, not a forecast.

Airlines on this route

Airline	Flights	On time	3 h+ late	Cancelled	Avg delay
American Airlines	1,133	71.3%	1.86%	3.98%	21 min
British Airways	726	78.5%	0.55%	0.55%	12 min

What you can claim

Direction	Rules	3 h+ delay or late cancellation
London Heathrow → Philadelphia	UK261 – departure from a UK airport, any airline	£520 (£260 for 3–4 h)
Philadelphia → London Heathrow	UK261 only with a UK or EU airline	£520 (£260 for 3–4 h)

On flights from Philadelphia to the UK, it matters who operated the flight:

American Airlines: Not covered by UK261/EU261 (non-UK/EU airline departing outside the UK/EU)
British Airways: UK261 – UK or EU airline flying into the UK

Compensation is fixed by distance, not by the ticket price, and is paid per passenger, children included. It is not due if the airline proves extraordinary circumstances. Whatever the cause, from 2 hours’ delay you are entitled to care (meals, drinks, a hotel if needed) and, after a cancellation, to a refund or re-routing.

More routes

London Heathrow → New York15,004 flights
London Heathrow → Dublin11,851 flights
London Heathrow → Amsterdam11,219 flights
London Heathrow → Frankfurt11,022 flights
London Heathrow → Munich9,566 flights
London Heathrow → Madrid9,442 flights
London Heathrow → Paris9,251 flights
London Heathrow → Geneva8,788 flights
London Heathrow → Zurich8,606 flights
London Heathrow → Edinburgh7,725 flights
London Heathrow → Lisbon7,540 flights
London Heathrow → Copenhagen7,164 flights

Airport guides: London Heathrow Airport

Frequently asked questions

How much compensation for a delayed London Heathrow to Philadelphia flight?

The great-circle distance is 5,690 km (3,536 miles). On the flight from London Heathrow UK261 applies: £520 per passenger for an arrival delay of 3 hours or more (£260 if the delay is between 3 and 4 hours). On the return flight from Philadelphia UK261 applies only if a UK or EU airline operated it.

How often are flights between London Heathrow and Philadelphia delayed or cancelled?

In 2025 the CAA recorded 1,859 flights on this route (both directions, measured at London Heathrow). 74.1% were on time or less than 15 minutes late, 1.35% were 3 hours or more late (about 1 in 74), and 2.67% were cancelled. The average delay was 17.4 minutes.

Does the airline have to pay if the delay was caused by weather or a strike?

Not if the airline proves extraordinary circumstances – for example severe weather or an air traffic control strike – and that it took all reasonable measures. Technical faults and strikes by the airline’s own staff do not normally count. What counts as extraordinary.

Sources

UK flight punctuality statistics 2025 – UK Civil Aviation Authority
The Air Passenger Rights and Air Travel Organisers’ Licensing (Amendment) (EU Exit) Regulations 2019 – legislation.gov.uk
Regulation (EC) No 261/2004 – EUR-Lex

We check every rule against the sources above. Spotted an error? Tell us – see our editorial policy.

London Heathrow to Philadelphia: flight delays and compensation