Cancellations on 17 Aug

1. 1 DEN Denver 3.6%of 1127usually 4.3% 41
2. 2 LIM Lima 9.1%of 285usually 3.5% 26
3. 3 IST Istanbul 2.8%of 815usually 3.2% 23
4. 4 BOS Boston 3.3%of 629usually 5.4% 21
5. 5 JFK New York 2.1%of 682usually 4.0% 14
6. 6 JED Jeddah 3.2%of 412usually 1.6% 13
7. 7 LAX Los Angeles 1.6%of 802usually 0.8% 13
8. 8 BCN Barcelona 0.8%of 1540usually 1.9% 12
9. 9 DEL New Delhi 0.8%of 1566usually 0.9% 12
10. 10 SYD Sydney 2.9%of 376usually 1.7% 11
11. 11 IAD Washington 2.6%of 424usually 5.1% 11
12. 12 MUC Munich 2.4%of 451usually 1.0% 11
13. 13 DCA Washington 2.3%of 470usually 7.0% 11
14. 14 YYZ Toronto 1.9%of 568usually 3.8% 11
15. 15 BOM Mumbai 2.3%of 442usually 2.2% 10
16. 16 YUL Montréal 3.1%of 291usually 4.3% 9
17. 17 EWR New York 1.7%of 542usually 4.6% 9
18. 18 BNE Brisbane 2.5%of 315usually 2.2% 8
19. 19 SEA Seattle 1.1%of 698usually 1.0% 8
20. 20 VLC Valencia 3.7%of 187usually 0.5% 7
21. 21 MEL Melbourne 2.2%of 321usually 1.6% 7
22. 22 MXP Milan 2.1%of 340usually 2.0% 7
23. 23 ZRH Zurich 1.8%of 397usually 1.0% 7
24. 24 FCO Rome 1.3%of 525usually 1.1% 7
25. 25 AMS Amsterdam 1.0%of 716usually 1.7% 7
26. 26 FRA Frankfurt am Main 1.0%of 730usually 1.5% 7
27. 27 FLL Fort Lauderdale 1.9%of 316usually 2.6% 6
28. 28 ATL Atlanta 0.5%of 1149usually 0.9% 6
29. 29 BER Berlin 2.2%of 229usually 0.9% 5
30. 30 HEL Helsinki 2.2%of 227usually 1.4% 5
31. 31 BRU Brussels 1.8%of 285usually 0.9% 5
32. 32 YYC Calgary 1.8%of 282usually 2.1% 5
33. 33 JNB Johannesburg 1.3%of 392usually 0.5% 5
34. 34 DXB Dubai 1.0%of 520usually 1.2% 5
35. 35 CDG Paris 0.7%of 687usually 0.8% 5
36. 36 CLT Charlotte 0.7%of 705usually 1.7% 5
37. 37 PEK Beijing 0.7%of 705usually 3.1% 5
38. 38 CAN Guangzhou 0.6%of 856usually 1.6% 5
39. 39 EZE Buenos Aires 98 departures seen 4
40. 40 ADL Adelaide 122 departures seen 4

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.

Mon 17 Aug: 586 cancelled of 60,884 tracked (1.0%) across 244 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.