SFO · San Francisco International Airport
San Francisco, CA. All airports.
Share of flights 15+ min late, by month
departures
arrivals
usual for the month (departures)
Jan 2015 → Jul 2026; gridlines 10/20/30/40%
Recent months — departures
| Month | Flights | Late 15+ | vs usual | Cancelled | Avg min | Main cause |
|---|---|---|---|---|---|---|
| Jul 2026 | 13,841 | 35.5% | +12.0 | 1.1% | 25 | Late aircraft |
| Jun 2026 | 13,415 | 36.2% | +13.3 | 0.7% | 26 | Late aircraft |
| May 2026 | 13,114 | 31.7% | +14.2 | 0.8% | 22 | Late aircraft |
| Apr 2026 | 12,401 | 26.6% | +9.0 | 0.7% | 18 | Late aircraft |
| Mar 2026 | 12,171 | 16.6% | -2.4 | 1.0% | 13 | Airline |
| Feb 2026 | 10,316 | 20.7% | +2.2 | 1.2% | 17 | Late aircraft |
| Jan 2026 | 11,113 | 18.4% | +2.2 | 2.4% | 17 | Late aircraft |
| Dec 2025 | 11,975 | 25.3% | -0.3 | 1.1% | 22 | Late aircraft |
| Nov 2025 | 12,022 | 20.2% | +5.8 | 1.9% | 15 | Late aircraft |
| Oct 2025 | 12,774 | 19.7% | +4.8 | 0.4% | 14 | Late aircraft |
| Sep 2025 | 11,830 | 15.6% | -0.5 | 0.3% | 11 | Late aircraft |
| Aug 2025 | 12,594 | 18.6% | -1.1 | 0.6% | 14 | Late aircraft |
| Jul 2025 | 12,958 | 23.5% | +3.3 | 1.1% | 18 | Late aircraft |
| Jun 2025 | 12,622 | 19.9% | -3.1 | 0.6% | 14 | Late aircraft |
| May 2025 | 12,885 | 17.5% | -1.5 | 0.4% | 13 | Air traffic |
| Apr 2025 | 12,173 | 13.7% | -3.9 | 0.3% | 10 | Late aircraft |
| Mar 2025 | 11,887 | 19.0% | -6.7 | 0.6% | 15 | Late aircraft |
| Feb 2025 | 9,936 | 19.8% | +1.3 | 1.1% | 16 | Late aircraft |
| Jan 2025 | 10,839 | 13.9% | -7.9 | 0.7% | 11 | Late aircraft |
| Dec 2024 | 12,097 | 22.5% | -3.1 | 0.7% | 17 | Late aircraft |
| Nov 2024 | 12,171 | 21.4% | +7.0 | 1.2% | 17 | Late aircraft |
| Oct 2024 | 12,568 | 16.1% | +1.3 | 0.3% | 11 | Late aircraft |
| Sep 2024 | 11,767 | 16.6% | +1.5 | 0.3% | 12 | Late aircraft |
| Aug 2024 | 12,036 | 21.2% | +1.5 | 0.9% | 15 | Late aircraft |
Airlines here, Apr 2026 (departures)
| Airline | Flights | Late | Canc. |
|---|---|---|---|
| United | 5,257 | 19.7% | 0.2% |
| JetBlue | 357 | 20.2% | 0.0% |
| Delta | 1,160 | 23.9% | 0.5% |
| Alaska | 964 | 26.9% | 0.7% |
| American | 997 | 30.1% | 0.7% |
| SkyWest | 2,557 | 31.0% | 1.7% |
| Frontier | 274 | 48.3% | 1.8% |
| Southwest | 835 | 51.1% | 1.0% |
Airlines with 30+ departures that month.
Worst days on record
| Date | Flights | Late | Canc. |
|---|---|---|---|
| 2015-12-21 | 485 | 73% | 13% |
| 2019-01-06 | 471 | 63% | 24% |
| 2019-12-02 | 484 | 67% | 12% |
| 2021-10-24 | 344 | 68% | 9% |
| 2024-02-04 | 329 | 56% | 32% |
| 2016-10-24 | 503 | 64% | 17% |
| 2019-12-01 | 485 | 63% | 17% |
| 2020-01-16 | 460 | 65% | 9% |
| 2017-11-26 | 538 | 64% | 9% |
| 2016-12-15 | 476 | 61% | 17% |
| 2017-01-08 | 429 | 57% | 22% |
| 2023-03-14 | 357 | 61% | 13% |
Departures; ranked by share late or cancelled.
FAA programs, last 90 days
| Started (UTC) | What | Hours |
|---|---|---|
| 2026-10-19 12:45 | Ground delay program | 7.3 |
| 2026-10-19 04:00 | Ground delay program | 2.0 |
| 2026-10-19 03:15 | Ground stop | 0.8 |
| 2026-10-17 00:45 | Ground delay program | 3.5 |
| 2026-10-16 21:45 | Departure delays | 1.3 |
| 2026-10-16 20:15 | Departure delays | 0.5 |
| 2026-10-15 18:30 | Departure delays | 1.0 |
| 2026-10-15 16:00 | Ground stop | 0.8 |