Cancellations on 27 Aug

1. 1 LGA New York 35.4%of 557usually 4.5% 197
2. 2 EWR New York 28.4%of 549usually 3.8% 156
3. 3 JFK New York 14.4%of 644usually 3.1% 93
4. 4 BOS Boston 6.9%of 655usually 3.3% 45
5. 5 ORD Chicago 3.0%of 1493usually 0.4% 45
6. 6 DCA Washington 7.3%of 464usually 3.2% 34
7. 7 YYZ Toronto 5.3%of 552usually 2.7% 29
8. 8 LHR London 4.2%of 674usually 0.9% 28
9. 9 YUL Montréal 8.6%of 290usually 4.2% 25
10. 10 MCO Orlando 5.3%of 456usually 1.0% 24
11. 11 CGH São Paulo 7.7%of 287usually 1.3% 22
12. 12 CAN Guangzhou 2.7%of 824usually 1.2% 22
13. 13 KOJ Kagoshima 87 departures seen 20
14. 14 CDG Paris 2.7%of 671usually 1.3% 18
15. 15 IST Istanbul 2.3%of 792usually 2.9% 18
16. 16 CLT Charlotte 2.5%of 692usually 0.6% 17
17. 17 HND Tokyo 2.5%of 671usually 1.8% 17
18. 18 DTW Detroit 0.7%of 2409usually 0.5% 17
19. 19 IND Indianapolis 9.8%of 164usually 1.3% 16
20. 20 IAD Washington 3.7%of 437usually 3.2% 16
21. 21 AKL Auckland 6.9%of 203usually 1.8% 14
22. 22 BWI Baltimore 4.6%of 306usually 1.0% 14
23. 23 SFO San Francisco 0.7%of 2008usually 0.6% 14
24. 24 FUK Fukuoka 5.0%of 259usually 3.5% 13
25. 25 DEL New Delhi 0.9%of 1482usually 0.9% 13
26. 26 FLL Fort Lauderdale 3.9%of 308usually 2.1% 12
27. 27 YVR Vancouver 3.2%of 375usually 2.2% 12
28. 28 PEK Beijing 1.8%of 665usually 1.9% 12
29. 29 LIM Lima 3.8%of 287usually 4.2% 11
30. 30 MIA Miami 2.2%of 503usually 0.9% 11
31. 31 AMS Amsterdam 1.6%of 678usually 1.3% 11
32. 32 ROC Rochester 57 departures seen 10
33. 33 KIX Osaka 4.2%of 238usually 1.1% 10
34. 34 MAN Manchester 4.1%of 245usually 1.3% 10
35. 35 FRA Frankfurt am Main 1.4%of 716usually 1.3% 10
36. 36 CUN Cancún 4.3%of 185usually 2.9% 8
37. 37 STR Stuttgart 3.8%of 208usually 1.3% 8
38. 38 OKA Naha 3.6%of 221usually 7.9% 8
39. 39 BNA Nashville 2.1%of 379usually 0.9% 8
40. 40 LAX Los Angeles 1.1%of 744usually 0.9% 8

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.

Thu 27 Aug: 1347 cancelled of 60,861 tracked (2.2%) across 245 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.