Cancellations on 20 Aug

1. 1 LGA New York 14.0%of 537usually 4.8% 75
2. 2 JFK New York 8.5%of 659usually 4.1% 56
3. 3 DCA Washington 11.0%of 465usually 7.0% 51
4. 4 EWR New York 8.2%of 548usually 4.7% 45
5. 5 BCN Barcelona 2.6%of 1517usually 1.8% 40
6. 6 DEN Denver 2.8%of 1133usually 4.0% 32
7. 7 BOS Boston 4.6%of 633usually 4.7% 29
8. 8 YYZ Toronto 4.5%of 560usually 3.8% 25
9. 9 DEL New Delhi 1.5%of 1553usually 0.9% 24
10. 10 MXP Milan 7.4%of 312usually 2.3% 23
11. 11 SFO San Francisco 1.1%of 2026usually 0.8% 23
12. 12 IST Istanbul 2.7%of 808usually 3.1% 22
13. 13 VIE Vienna 5.3%of 356usually 1.2% 19
14. 14 BWI Baltimore 5.4%of 299usually 2.5% 16
15. 15 FRA Frankfurt am Main 2.1%of 713usually 1.3% 15
16. 16 CDG Paris 2.1%of 678usually 0.9% 14
17. 17 YUL Montréal 4.4%of 294usually 4.3% 13
18. 18 IAD Washington 2.3%of 431usually 4.9% 10
19. 19 BNE Brisbane 2.5%of 317usually 2.3% 8
20. 20 AMS Amsterdam 1.2%of 680usually 1.6% 8
21. 21 CLT Charlotte 1.1%of 700usually 1.6% 8
22. 22 NRT Tokyo 2.3%of 307usually 2.2% 7
23. 23 MEL Melbourne 2.2%of 323usually 1.7% 7
24. 24 ORY Paris 2.2%of 315usually 1.2% 7
25. 25 BNA Nashville 1.8%of 379usually 1.6% 7
26. 26 ZRH Zurich 1.8%of 390usually 1.1% 7
27. 27 MCO Orlando 1.5%of 462usually 1.5% 7
28. 28 LAS Las Vegas 1.1%of 626usually 0.7% 7
29. 29 HND Tokyo 1.0%of 674usually 2.3% 7
30. 30 LAX Los Angeles 0.9%of 745usually 1.0% 7
31. 31 ATL Atlanta 0.6%of 1163usually 0.9% 7
32. 32 HEL Helsinki 2.6%of 229usually 1.6% 6
33. 33 LIM Lima 2.0%of 307usually 4.1% 6
34. 34 FLL Fort Lauderdale 1.9%of 316usually 2.7% 6
35. 35 SVO Moscow 1.4%of 429usually 1.9% 6
36. 36 CMH Columbus 3.1%of 163usually 2.6% 5
37. 37 NCE Nice 2.6%of 196usually 1.4% 5
38. 38 RDU Raleigh/Durham 2.2%of 231usually 2.3% 5
39. 39 MAN Manchester 2.0%of 252usually 1.1% 5
40. 40 TPE Taipei 1.4%of 361usually 3.4% 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.

Thu 20 Aug: 935 cancelled of 60,680 tracked (1.5%) across 249 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.