Cancellations on 19 Sept

1. 1 ORD Chicago 17.1%of 1453usually 2.0% 248
2. 2 MDW Chicago 20.2%of 188usually 1.8% 38
3. 3 IST Istanbul 3.3%of 790usually 3.4% 26
4. 4 AMS Amsterdam 2.6%of 653usually 2.0% 17
5. 5 KUL Kuala Lumpur 3.9%of 356usually 1.9% 14
6. 6 DEL New Delhi 0.9%of 1593usually 1.0% 14
7. 7 LIM Lima 4.7%of 279usually 2.2% 13
8. 8 BOM Mumbai 3.0%of 440usually 1.8% 13
9. 9 FCO Rome 2.8%of 397usually 1.6% 11
10. 10 BOS Boston 2.0%of 492usually 2.5% 10
11. 11 YYZ Toronto 1.8%of 495usually 1.9% 9
12. 12 IND Indianapolis 134 departures seen 8
13. 13 CUN Cancún 4.7%of 169usually 5.4% 8
14. 14 IAD Washington 2.1%of 382usually 2.0% 8
15. 15 PEK Beijing 1.3%of 634usually 1.1% 8
16. 16 HND Tokyo 1.2%of 681usually 1.0% 8
17. 17 MCI Kansas City 4.2%of 168usually 0.6% 7
18. 18 FUK Fukuoka 2.8%of 251usually 2.3% 7
19. 19 YUL Montréal 2.8%of 250usually 2.0% 7
20. 20 YVR Vancouver 2.2%of 317usually 1.0% 7
21. 21 LGA New York 2.1%of 337usually 0.6% 7
22. 22 DCA Washington 2.0%of 353usually 1.1% 7
23. 23 SFO San Francisco 0.4%of 1732usually 0.4% 7
24. 24 BNE Brisbane 2.6%of 229usually 3.5% 6
25. 25 MEL Melbourne 2.1%of 292usually 0.9% 6
26. 26 IAH Houston 1.1%of 544usually 0.5% 6
27. 27 FRA Frankfurt am Main 0.8%of 766usually 0.8% 6
28. 28 FLL Fort Lauderdale 1.9%of 259usually 1.8% 5
29. 29 DXB Dubai 1.0%of 508usually 1.1% 5
30. 30 CDG Paris 0.8%of 630usually 0.8% 5
31. 31 LAX Los Angeles 0.8%of 643usually 0.9% 5
32. 32 CAN Guangzhou 0.6%of 779usually 0.9% 5
33. 33 CHC Christchurch 77 departures seen 4
34. 34 ADL Adelaide 92 departures seen 4
35. 35 SYD Sydney 1.3%of 300usually 1.2% 4
36. 36 NRT Tokyo 1.2%of 326usually 1.7% 4
37. 37 LAS Las Vegas 0.9%of 448usually 0.3% 4
38. 38 MIA Miami 0.9%of 450usually 4.0% 4
39. 39 ZQN Queenstown 30 departures seen 3
40. 40 NGS Nagasaki 38 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.

Sat 19 Sept: 740 cancelled of 48,687 tracked (1.5%) across 218 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.