Cancellations on 21 Jul

1. 1 SFO San Francisco 3.3%of 1914usually 1.1% 64
2. 2 YYZ Toronto 9.1%of 539usually 3.8% 49
3. 3 MCO Orlando 10.2%of 421usually 2.5% 43
4. 4 CLT Charlotte 6.0%of 717usually 1.7% 43
5. 5 IST Istanbul 4.5%of 777usually 3.5% 35
6. 6 MIA Miami 6.0%of 516usually 1.6% 31
7. 7 EWR New York 5.3%of 548usually 1.3% 29
8. 8 LAX Los Angeles 2.8%of 798usually 0.9% 22
9. 9 IAH Houston 3.2%of 603usually 0.8% 19
10. 10 DEL New Delhi 1.3%of 1388usually 0.7% 18
11. 11 LGA New York 67 departures seen 17
12. 12 CMH Columbus 10.8%of 158usually 2.2% 17
13. 13 JFK New York 2.5%of 650usually 0.8% 16
14. 14 JED Jeddah 3.8%of 396usually 4.0% 15
15. 15 AUS Austin 4.6%of 303usually 1.4% 14
16. 16 PEK Beijing 2.0%of 708usually 2.8% 14
17. 17 MSP Minneapolis 2.3%of 556usually 1.6% 13
18. 18 PHX Phoenix 1.6%of 820usually 0.6% 13
19. 19 MCI Kansas City 6.9%of 174usually 1.4% 12
20. 20 HEL Helsinki 5.8%of 208usually 1.2% 12
21. 21 MXP Milan 4.1%of 293usually 1.3% 12
22. 22 DXB Dubai 2.5%of 477usually 1.9% 12
23. 23 SEA Seattle 1.7%of 693usually 0.8% 12
24. 24 BNE Brisbane 3.6%of 307usually 2.1% 11
25. 25 LAS Las Vegas 2.1%of 525usually 0.8% 11
26. 26 BOS Boston 1.8%of 619usually 0.4% 11
27. 27 IAD Washington 2.2%of 402usually 0.7% 9
28. 28 WAW Warsaw 2.7%of 294usually 0.8% 8
29. 29 AMS Amsterdam 1.3%of 633usually 2.7% 8
30. 30 FRA Frankfurt am Main 1.1%of 709usually 1.3% 8
31. 31 YOW Ottawa 28 departures seen 7
32. 32 CUN Cancún 3.3%of 214usually 1.4% 7
33. 33 CGH São Paulo 2.1%of 331usually 1.6% 7
34. 34 SYD Sydney 2.0%of 348usually 1.9% 7
35. 35 YVR Vancouver 2.0%of 353usually 1.6% 7
36. 36 SZX Shenzhen 1.2%of 590usually 1.2% 7
37. 37 HND Tokyo 1.0%of 668usually 1.8% 7
38. 38 MAN Manchester 2.5%of 236usually 1.8% 6
39. 39 LIM Lima 1.8%of 278usually 1.8% 5
40. 40 SAN San Diego 1.5%of 338usually 0.9% 5

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.

Tue 21 Jul: 780 cancelled of 41,051 tracked (1.9%) across 143 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.