Cancellations on 11 Aug

1. 1 ORD Chicago 3.7%of 1670usually 0.8% 62
2. 2 JFK New York 8.5%of 650usually 4.5% 55
3. 3 PEK Beijing 7.2%of 705usually 2.9% 51
4. 4 LGA New York 7.9%of 533usually 5.6% 42
5. 5 EWR New York 7.7%of 531usually 4.4% 41
6. 6 DEN Denver 3.6%of 1008usually 3.1% 36
7. 7 HND Tokyo 5.1%of 669usually 2.5% 34
8. 8 DCA Washington 7.2%of 460usually 6.9% 33
9. 9 BOG Bogota 4.9%of 656usually 2.0% 32
10. 10 IST Istanbul 3.9%of 794usually 3.3% 31
11. 11 BOS Boston 4.8%of 604usually 5.3% 29
12. 12 NRT Tokyo 7.3%of 314usually 2.3% 23
13. 13 IAD Washington 5.4%of 368usually 3.6% 20
14. 14 YYZ Toronto 3.4%of 552usually 4.8% 19
15. 15 ATL Atlanta 1.6%of 1085usually 1.0% 17
16. 16 BNE Brisbane 5.7%of 279usually 2.7% 16
17. 17 CLT Charlotte 2.4%of 656usually 2.2% 16
18. 18 BCN Barcelona 1.1%of 1493usually 0.9% 16
19. 19 AMS Amsterdam 2.4%of 634usually 1.7% 15
20. 20 CAN Guangzhou 1.6%of 811usually 1.1% 13
21. 21 DEL New Delhi 0.9%of 1510usually 0.9% 13
22. 22 CGO Zhengzhou 37 departures seen 11
23. 23 WAW Warsaw 3.8%of 292usually 1.3% 11
24. 24 YUL Montréal 3.8%of 289usually 4.9% 11
25. 25 BOM Mumbai 2.5%of 446usually 2.6% 11
26. 26 CVG Cincinnati / Covington 5.6%of 177usually 3.7% 10
27. 27 MXP Milan 3.3%of 306usually 1.4% 10
28. 28 SYD Sydney 2.9%of 342usually 1.5% 10
29. 29 MLA Valletta 113 departures seen 9
30. 30 LPA Gran Canaria Island 3.2%of 279usually 0.3% 9
31. 31 YVR Vancouver 2.5%of 359usually 3.6% 9
32. 32 CMH Columbus 139 departures seen 8
33. 33 ITM Osaka 4.0%of 201usually 4.6% 8
34. 34 FUK Fukuoka 3.1%of 261usually 3.9% 8
35. 35 FLL Fort Lauderdale 3.0%of 269usually 2.6% 8
36. 36 MEL Melbourne 2.8%of 285usually 1.4% 8
37. 37 DXB Dubai 1.6%of 505usually 1.1% 8
38. 38 HPN White Plains 67 departures seen 7
39. 39 MKE Milwaukee 91 departures seen 7
40. 40 BNA Nashville 2.1%of 340usually 1.7% 7

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.

Tue 11 Aug: 1133 cancelled of 56,497 tracked (2.0%) across 229 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.