Cancellations on 18 Aug

1. 1 IST Istanbul 3.7%of 785usually 3.2% 29
2. 2 DEN Denver 2.6%of 992usually 4.2% 26
3. 3 LIM Lima 6.4%of 311usually 3.8% 20
4. 4 SVO Moscow 3.7%of 429usually 2.2% 16
5. 5 BOS Boston 2.7%of 598usually 5.2% 16
6. 6 CAN Guangzhou 2.0%of 805usually 1.8% 16
7. 7 DEL New Delhi 1.0%of 1523usually 0.9% 15
8. 8 SFO San Francisco 0.7%of 1778usually 0.7% 13
9. 9 BCN Barcelona 0.8%of 1482usually 1.8% 12
10. 10 IAD Washington 3.0%of 371usually 5.1% 11
11. 11 BNE Brisbane 3.5%of 284usually 2.2% 10
12. 12 YUL Montréal 3.4%of 295usually 4.3% 10
13. 13 DCA Washington 1.7%of 465usually 6.9% 8
14. 14 YYZ Toronto 1.5%of 537usually 3.8% 8
15. 15 SYD Sydney 2.1%of 339usually 1.7% 7
16. 16 EWR New York 1.3%of 522usually 4.6% 7
17. 17 AMS Amsterdam 1.1%of 665usually 1.7% 7
18. 18 JFK New York 1.1%of 645usually 3.8% 7
19. 19 LAX Los Angeles 1.1%of 664usually 0.9% 7
20. 20 LHR London 1.0%of 668usually 1.2% 7
21. 21 PEK Beijing 1.0%of 706usually 3.0% 7
22. 22 CUN Cancún 3.5%of 172usually 1.3% 6
23. 23 FLL Fort Lauderdale 2.2%of 269usually 2.6% 6
24. 24 BOM Mumbai 1.4%of 437usually 2.2% 6
25. 25 DXB Dubai 1.2%of 513usually 1.2% 6
26. 26 CLT Charlotte 0.9%of 656usually 1.8% 6
27. 27 PTY Tocumen 2.2%of 232usually 0.9% 5
28. 28 WAW Warsaw 1.8%of 283usually 1.0% 5
29. 29 TPE Taipei 1.4%of 359usually 3.4% 5
30. 30 JED Jeddah 1.2%of 409usually 1.6% 5
31. 31 CDG Paris 0.8%of 659usually 0.8% 5
32. 32 FRA Frankfurt am Main 0.7%of 689usually 1.4% 5
33. 33 ATL Atlanta 0.5%of 1056usually 0.9% 5
34. 34 MFM Nossa Senhora do Carmo 22 departures seen 4
35. 35 BIL Billings 46 departures seen 4
36. 36 HPN White Plains 62 departures seen 4
37. 37 ADL Adelaide 105 departures seen 4
38. 38 BRU Brussels 1.5%of 270usually 0.9% 4
39. 39 OSL Oslo 1.1%of 369usually 0.5% 4
40. 40 YVR Vancouver 1.1%of 358usually 1.9% 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.

Tue 18 Aug: 493 cancelled of 57,148 tracked (0.9%) across 247 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.