Daily delay log

London Heathrow delays on 21 September 2026

2 flights ran 3 hours or more late and 8 were cancelled at London Heathrow that day. Every one is below, with what it is worth per person.

Check your flight

Free

On your boarding pass or booking email. easyJet 8706 works too.

Landed just after midnight? Pick the day before.

Why this day was disrupted

21 September 2026 was a second NATS air traffic control failure, at Prestwick. The CAA said disruption caused by it is likely to count as extraordinary circumstances, so compensation is unlikely to be owed for those flights, including the knock-on delays over the days after.

What the airline still owes you does not depend on whose fault it was: food and drink, a hotel and the transfers to it if you were stuck overnight, and your money back if you gave up on the trip.

What you're owed when it's not their fault Check your own flight
10 flights UK or EU rules cover 2 likely owed money Free to check

Every flight

Find your flight

Every flight landing at or leaving London Heathrow we logged on 21 September 2026 that ran 3 hours or more late or was cancelled, and that UK or EU rules cover. Amounts are per person on the booking (half on the longest flights that landed 3 to 4 hours late). Airlines can still dispute a claim by proving the cause was outside their control, so check yours for the real answer. We earn a fee if you claim through a Claim link.

Tap your airline

British Airways

9 flights: 2 late, 7 cancelled
BA1315CancelledAberdeen → London Heathrow

due 20:00

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page
BA1335CancelledNewcastle upon Tyne → London Heathrow

due 17:35

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page
BA831CancelledDublin → London Heathrow

due 16:45

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page
BA435CancelledAmsterdam → London Heathrow

due 16:05

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page
BA14473 hrs 9 minEdinburgh → London Heathrow£220 each

due 14:55, landed 18:04

£220each
This flight's own page
BA1483CancelledGlasgow → London Heathrow

due 14:55

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page
BA823 hrs 51 minAbuja → London Heathrow£260 each

due 14:30, landed 18:21

£260each
This flight's own page
BA298CancelledChicago → London Heathrow

due 09:05

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page
BA911CancelledFrankfurt → London Heathrow

due 07:20

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page

KLM

1 flight: 1 cancelled
KL1001CancelledAmsterdam → London Heathrow

due 07:40

Check if I'm owedTold less than 2 weeks before? You may be owed.
This flight's own page

Yours in the list? Check it free and we'll tell you what the airline owes you.

More

Around this day

This is our own flight tracking, not CAA punctuality data: we sweep the airports we cover several times a day and log the flights that cross the 3-hour line or are cancelled outright. It is not every flight at London Heathrow that day, only the ones that went wrong, and of those, only the ones UK or EU rules cover, which is what this page is about. The day page counts the flights that landed at every airport we swept, covered by the rules or not, so its totals are larger.