Cancellations on 14 Aug

1. 1 DEN Denver 7.6%of 1149usually 4.2% 87
2. 2 CAN Guangzhou 4.4%of 837usually 1.6% 37
3. 3 IAD Washington 7.3%of 423usually 4.9% 31
4. 4 IST Istanbul 3.4%of 829usually 3.2% 28
5. 5 PHX Phoenix 3.4%of 704usually 1.2% 24
6. 6 BOG Bogota 3.8%of 598usually 2.4% 23
7. 7 BOS Boston 3.3%of 666usually 6.1% 22
8. 8 LIM Lima 6.7%of 298usually 2.6% 20
9. 9 YYZ Toronto 3.3%of 581usually 5.2% 19
10. 10 DXB Dubai 3.3%of 541usually 1.5% 18
11. 11 AMS Amsterdam 2.8%of 652usually 1.8% 18
12. 12 DEL New Delhi 1.0%of 1639usually 0.9% 17
13. 13 JFK New York 2.4%of 661usually 4.9% 16
14. 14 AKL Auckland 7.0%of 213usually 1.9% 15
15. 15 DCA Washington 3.0%of 469usually 7.7% 14
16. 16 SZX Shenzhen 2.2%of 640usually 0.8% 14
17. 17 BCN Barcelona 0.9%of 1546usually 1.8% 14
18. 18 WLG Wellington 98 departures seen 12
19. 19 SVO Moscow 2.7%of 443usually 2.2% 12
20. 20 EWR New York 2.2%of 551usually 4.9% 12
21. 21 SFO San Francisco 0.6%of 1979usually 0.8% 12
22. 22 YUL Montréal 3.5%of 315usually 5.1% 11
23. 23 FRA Frankfurt am Main 1.5%of 737usually 1.6% 11
24. 24 SEA Seattle 1.3%of 695usually 1.0% 9
25. 25 FLL Fort Lauderdale 2.5%of 321usually 3.1% 8
26. 26 NRT Tokyo 2.5%of 326usually 2.4% 8
27. 27 DOH Doha 2.4%of 332usually 1.0% 8
28. 28 BOM Mumbai 1.8%of 452usually 2.4% 8
29. 29 PEK Beijing 1.1%of 719usually 3.1% 8
30. 30 MLA Valletta 105 departures seen 7
31. 31 SYD Sydney 1.8%of 390usually 1.5% 7
32. 32 YVR Vancouver 1.8%of 385usually 3.6% 7
33. 33 MCO Orlando 1.4%of 508usually 3.0% 7
34. 34 HND Tokyo 1.1%of 666usually 2.5% 7
35. 35 ATL Atlanta 0.6%of 1199usually 1.3% 7
36. 36 LIN Milan 145 departures seen 6
37. 37 SVQ Seville 148 departures seen 6
38. 38 CVG Cincinnati / Covington 3.1%of 192usually 4.4% 6
39. 39 HEL Helsinki 2.8%of 217usually 1.0% 6
40. 40 FUK Fukuoka 2.3%of 263usually 3.7% 6

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.

Fri 14 Aug: 897 cancelled of 60,722 tracked (1.5%) across 235 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.