These monthly airport performance reports rank qualified airports using aggregated departure delay and cancellation data from AeroCorner’s airport analytics pipeline. Airports must meet a minimum tracked-flight threshold to appear in the rankings. For continuously updated 24-hour, 7-day, and 30-day rankings, see the live airport delays dashboard.
Flight Delay Report — September 2026
In September 2026, Sochi (AER) recorded the longest typical departure delays among qualified airports, with departures averaging 3 hours 36 minutes late. A total of 351 departures were cancelled, representing 6.0% of tracked flights. This monthly view reflects tracked data through September 30, 2026.
Kazan (KZN) ranked second while handling a comparable number of tracked departures, with 3,687 flights compared with 5,837 at Sochi (AER). Despite the similar traffic levels, Sochi (AER) remained the worst-performing airport for delays for eight straight months.
Airport Delay Rankings — September 2026
- Average delay
- 3h 36m 3 hours 36 min late
- Cancelled
- 351 (6.0%)
- Average delay
- 1h 12m 1 hour 12 min late
- Cancelled
- 81 (2.2%)
- Average delay
- 50m 50 min late
- Cancelled
- 55 (1.6%)
- Average delay
- 47m 47 min late
- Cancelled
- 44 (1.2%)
- Average delay
- 42m 42 min late
- Cancelled
- 71 (1.2%)
- Average delay
- 36m 36 min late
- Cancelled
- 232 (2.2%)
- Average delay
- 34m 34 min late
- Cancelled
- 44 (1.3%)
- Average delay
- 32m 32 min late
- Cancelled
- 0 (0.0%)
- Average delay
- 27m 27 min late
- Cancelled
- 0 (0.0%)
- Average delay
- 26m 26 min late
- Cancelled
- 721 (1.6%)
| Rank | Airport | Average Delay | Cancelled |
|---|---|---|---|
| 1 |
Sochi (AER)
(Russia)
|
3h 36m 3 hours 36 min late | 351 (6.0%) |
| 2 |
Kazan (KZN)
(Russia)
|
1h 12m 1 hour 12 min late | 81 (2.2%) |
| 3 |
Ufa (UFA)
(Russia)
|
50m 50 min late | 55 (1.6%) |
| 4 |
Mineralnyye Vody (MRV)
(Russia)
|
47m 47 min late | 44 (1.2%) |
| 5 |
Ekaterinburg (SVX)
(Russia)
|
42m 42 min late | 71 (1.2%) |
| 6 |
Moscow (VKO)
(Russia)
|
36m 36 min late | 232 (2.2%) |
| 7 |
Kaliningrad (KGD)
(Russia)
|
34m 34 min late | 44 (1.3%) |
| 8 |
Tel Aviv (TLV)
(Israel)
|
32m 32 min late | 0 (0.0%) |
| 9 |
Chicago (ORD)
(United States)
|
27m 27 min late | 0 (0.0%) |
| 10 |
London (LHR)
(United Kingdom)
|
26m 26 min late | 721 (1.6%) |
Worst Airports for Flight Delays by Month
Month-by-month leaders for this ranking, based on daily rollup data and minimum tracked-flight thresholds.
- Average delay
- 3h 36m 3 hours 36 min late
- Cancelled
- 351 (6.0%)
- Average delay
- 3h 25m 3 hours 25 min late
- Cancelled
- 282 (4.1%)
- Average delay
- 1h 10m 1 hour 10 min late
- Cancelled
- 124 (2.1%)
- Average delay
- 3h 2m 3 hours 2 min late
- Cancelled
- 464 (6.9%)
- Average delay
- 1h 5m 1 hour 5 min late
- Cancelled
- 160 (3.2%)
- Average delay
- 47m 47 min late
- Cancelled
- 68 (1.8%)
- Average delay
- 1h 31m 1 hour 31 min late
- Cancelled
- 270 (5.8%)
- Average delay
- 45m 45 min late
- Cancelled
- 214 (5.8%)
- Average delay
- 51m 51 min late
- Cancelled
- 152 (1.9%)
| Month | Airport | Average Delay | Cancelled |
|---|---|---|---|
| Sep 2026 |
Sochi (AER)
(Russia)
|
3h 36m 3 hours 36 min late | 351 (6.0%) |
| Aug 2026 |
Sochi (AER)
(Russia)
|
3h 25m 3 hours 25 min late | 282 (4.1%) |
| Jul 2026 |
Sochi (AER)
(Russia)
|
1h 10m 1 hour 10 min late | 124 (2.1%) |
| Jun 2026 |
Sochi (AER)
(Russia)
|
3h 2m 3 hours 2 min late | 464 (6.9%) |
| May 2026 |
Sochi (AER)
(Russia)
|
1h 5m 1 hour 5 min late | 160 (3.2%) |
| Apr 2026 |
Sochi (AER)
(Russia)
|
47m 47 min late | 68 (1.8%) |
| Mar 2026 |
Sochi (AER)
(Russia)
|
1h 31m 1 hour 31 min late | 270 (5.8%) |
| Feb 2026 |
Sochi (AER)
(Russia)
|
45m 45 min late | 214 (5.8%) |
| Jan 2026 |
Moscow (VKO)
(Russia)
|
51m 51 min late | 152 (1.9%) |