Airports › San Francisco (SFO) › August 2025
Airport month · August 2025
San Francisco International in August 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In August 2025, reporting carriers scheduled 12,594 domestic departures from San Francisco International (SFO). 80.8% left less than 15 minutes late and 78.8% reached their destination on time; 0.6% were cancelled.
Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so SFO departures were 4.0 points above the national departure figure.
A year earlier, in August 2024, the airport had 12,036 departures with 78.1% leaving on time: a change of +2.7 points, with flights up 5%.
Flights arriving at SFO that month were on time 76.7% of the time (12,611 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 37% and national aviation system 19%.
- On time 78.8%
- Arrived 15+ minutes late 20.2%
- Cancelled 0.6%
- Diverted 0.3%
August 2025 against a year earlier, the airport's year and the nation
| Measure | Aug 2025 | Aug 2024 | SFO, 12 months to Jul 2026 | All reported flights, Aug 2025 |
|---|---|---|---|---|
| Departed on time | 80.8% | 78.1% | 75.1% | 76.8% |
| Arrived on time | 78.8% | 78.2% | 75.6% | 76.3% |
| Cancelled | 0.6% | 0.9% | 1.0% | 1.1% |
| Average departure delay (late minutes only) | 14.3 min | 15.3 min | 17.8 min | 17.6 min |
| Scheduled departures a day | 420 | 401 | 404 | 20,079 |
| Scheduled departures | 12,594 | 12,036 | 147,566 | 602,378 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 5,087 | 40% | 80.0% | 5.6 min | 0.9% |
| OO SkyWest Airlines | 2,758 | 22% | 82.3% | 4.5 min | 0.2% |
| DL Delta Air Lines | 1,204 | 10% | 83.3% | 0.4 min | 0.6% |
| AA American Airlines | 1,068 | 8% | 75.3% | 12.4 min | 1.0% |
| AS Alaska Airlines | 964 | 8% | 73.9% | 8.9 min | 0.6% |
| WN Southwest Airlines | 749 | 6% | 64.6% | 15.8 min | 0.0% |
| B6 JetBlue Airways | 380 | 3% | 87.4% | -2.7 min | 0.3% |
| F9 Frontier Airlines | 299 | 2% | 61.5% | 24.3 min | 2.3% |
| HA Hawaiian Airlines | 85 | 1% | 82.4% | 3.7 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SFO–LAX | San Francisco to Los Angeles | 928 | 77.3% | 8.1 min | 0.6% |
| SFO–SEA | San Francisco to Seattle | 620 | 71.0% | 11.2 min | 0.6% |
| SFO–SAN | San Francisco to San Diego | 593 | 68.3% | 15.6 min | 0.2% |
| SFO–JFK | San Francisco to New York | 591 | 82.9% | 0.6 min | 0.8% |
| SFO–ORD | San Francisco to Chicago | 523 | 73.4% | 10.3 min | 2.7% |
| SFO–LAS | San Francisco to Las Vegas | 521 | 82.0% | 4.7 min | 0.2% |
| SFO–DEN | San Francisco to Denver | 460 | 70.4% | 11.5 min | 0.2% |
| SFO–BOS | San Francisco to Boston | 431 | 84.5% | 2.3 min | 0.2% |
| SFO–SNA | San Francisco to Santa Ana | 424 | 85.1% | 0.9 min | 0.5% |
| SFO–EWR | San Francisco to Newark | 384 | 66.7% | 15.9 min | 2.9% |
| SFO–PHX | San Francisco to Phoenix | 341 | 77.4% | 9.8 min | 0.9% |
| SFO–DFW | San Francisco to Dallas/Fort Worth | 337 | 67.7% | 19.9 min | 1.8% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SFO on time in August 2025?
80.8% of 12,594 scheduled domestic departures left less than 15 minutes late, and 78.8% reached their destination on time. The national figures that month were 76.8% and 76.3%.
How does that compare with a year earlier?
In August 2024, 78.1% of 12,036 departures left on time and 0.9% were cancelled, against 80.8% and 0.6% in August 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for SFO · methodology · corrections.