Cancellations on 19 Aug

1. 1 IST Istanbul 3.6%of 795usually 3.2% 29
2. 2 DEN Denver 2.7%of 1035usually 4.1% 28
3. 3 LIM Lima 7.1%of 297usually 4.1% 21
4. 4 BOS Boston 2.5%of 603usually 4.9% 15
5. 5 DEL New Delhi 0.8%of 1592usually 0.9% 13
6. 6 JED Jeddah 2.8%of 433usually 1.7% 12
7. 7 PEK Beijing 1.7%of 706usually 3.0% 12
8. 8 IAD Washington 2.8%of 393usually 5.1% 11
9. 9 EWR New York 2.1%of 522usually 4.7% 11
10. 10 JFK New York 1.7%of 651usually 3.8% 11
11. 11 YUL Montréal 3.0%of 300usually 4.5% 9
12. 12 BOG Bogota 1.4%of 633usually 2.3% 9
13. 13 CUN Cancún 4.7%of 170usually 1.5% 8
14. 14 BCN Barcelona 0.5%of 1509usually 1.8% 8
15. 15 WAW Warsaw 2.4%of 291usually 1.2% 7
16. 16 YVR Vancouver 1.9%of 373usually 2.0% 7
17. 17 PTY Tocumen 2.5%of 236usually 1.1% 6
18. 18 FLL Fort Lauderdale 2.2%of 273usually 2.6% 6
19. 19 SYD Sydney 1.8%of 341usually 1.8% 6
20. 20 TPE Taipei 1.7%of 356usually 3.4% 6
21. 21 BOM Mumbai 1.4%of 439usually 2.1% 6
22. 22 DCA Washington 1.3%of 470usually 6.7% 6
23. 23 YYZ Toronto 1.1%of 552usually 3.8% 6
24. 24 GMP Seoul 2.7%of 184usually 1.3% 5
25. 25 MEL Melbourne 1.7%of 295usually 1.6% 5
26. 26 MCO Orlando 1.2%of 411usually 2.3% 5
27. 27 FRA Frankfurt am Main 0.7%of 712usually 1.3% 5
28. 28 LAX Los Angeles 0.7%of 688usually 0.9% 5
29. 29 ATL Atlanta 0.5%of 1074usually 0.9% 5
30. 30 HPN White Plains 61 departures seen 4
31. 31 CNF Belo Horizonte 2.4%of 166usually 1.2% 4
32. 32 BRU Brussels 1.5%of 261usually 1.0% 4
33. 33 YYC Calgary 1.5%of 265usually 2.1% 4
34. 34 BNE Brisbane 1.3%of 298usually 2.2% 4
35. 35 ORY Paris 1.3%of 310usually 1.2% 4
36. 36 AMS Amsterdam 0.6%of 680usually 1.6% 4
37. 37 HND Tokyo 0.6%of 668usually 2.4% 4
38. 38 YOW Ottawa 44 departures seen 3
39. 39 CBR Canberra 62 departures seen 3
40. 40 KEF Reykjavík 93 departures seen 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 19 Aug: 442 cancelled of 58,071 tracked (0.8%) across 249 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.