Cancellations on 5 Aug

1. 1 DEN Denver 3.6%of 1044usually 1.4% 38
2. 2 BOS Boston 5.7%of 613usually 2.4% 35
3. 3 MIA Miami 5.7%of 542usually 2.7% 31
4. 4 IST Istanbul 3.8%of 806usually 3.5% 31
5. 5 DCA Washington 3.8%of 453usually 2.0% 17
6. 6 BCN Barcelona 1.1%of 1523usually 0.4% 17
7. 7 IAD Washington 3.5%of 403usually 1.2% 14
8. 8 JFK New York 2.0%of 656usually 4.1% 13
9. 9 DEL New Delhi 0.9%of 1504usually 0.7% 13
10. 10 SVO Moscow 2.5%of 433usually 1.5% 11
11. 11 AMS Amsterdam 1.7%of 638usually 1.5% 11
12. 12 LHR London 1.6%of 669usually 1.1% 11
13. 13 PEK Beijing 1.6%of 703usually 2.0% 11
14. 14 BOM Mumbai 2.2%of 457usually 2.3% 10
15. 15 YYZ Toronto 1.8%of 559usually 4.0% 10
16. 16 FRA Frankfurt am Main 1.4%of 714usually 1.4% 10
17. 17 LIM Lima 2.8%of 317usually 1.8% 9
18. 18 LGA New York 1.7%of 541usually 7.1% 9
19. 19 AEP Buenos Aires 4.0%of 202usually 3.3% 8
20. 20 BNA Nashville 2.3%of 343usually 0.8% 8
21. 21 EWR New York 1.5%of 534usually 4.5% 8
22. 22 COR Cordoba 32 departures seen 7
23. 23 CGH São Paulo 2.5%of 275usually 2.1% 7
24. 24 DXB Dubai 1.4%of 518usually 1.3% 7
25. 25 BOG Bogota 1.2%of 604usually 1.2% 7
26. 26 HND Tokyo 1.1%of 664usually 1.1% 7
27. 27 TPE Taipei 1.7%of 347usually 2.0% 6
28. 28 IAH Houston 0.9%of 641usually 0.9% 6
29. 29 TPA Tampa 2.2%of 228usually 0.9% 5
30. 30 VIE Vienna 1.4%of 348usually 0.8% 5
31. 31 JED Jeddah 1.2%of 408usually 4.5% 5
32. 32 LAX Los Angeles 0.6%of 775usually 1.1% 5
33. 33 EZE Buenos Aires 103 departures seen 4
34. 34 CVG Cincinnati / Covington 2.3%of 171usually 1.5% 4
35. 35 BER Berlin 1.8%of 226usually 0.9% 4
36. 36 FLL Fort Lauderdale 1.5%of 270usually 1.2% 4
37. 37 CLT Charlotte 0.6%of 680usually 1.6% 4
38. 38 SEA Seattle 0.6%of 666usually 0.9% 4
39. 39 YHZ Halifax 37 departures seen 3
40. 40 OPO Porto 1.6%of 182usually 0.7% 3

Ranked by cancelled departures on each airport's own board that day. Orange marks a cancellation rate at least double what that airport usually runs over the past fortnight.

Wed 5 Aug: 551 cancelled of 56,295 tracked (1.0%) across 217 airports

Each bar is one completed day across every airport board that published cancellations that day. Tap a bar for that day's full ranking. The set of counted airports shifts as boards change behaviour, so read the rate alongside the raw count; a gap means we have no usable record for that day. The outlined bar is the day you are viewing.

Some airport boards remove cancelled flights instead of labelling them, so there is no cancellation figure to read at these airports. The busiest of them:

A handful of other boards label routine schedule padding as cancelled, and do so to 15 to 27% of departures every day. Those airports are left out too.