Airports › San Francisco (SFO) › April 2024
Airport month · April 2024
San Francisco International in April 2024
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 April 2024, reporting carriers scheduled 10,622 domestic departures from San Francisco International (SFO). 70.3% left less than 15 minutes late and 73.2% reached their destination on time; 0.8% were cancelled.
Nationally that month, 80.5% of flights departed on time and 80.2% arrived on time, so SFO departures were 10.2 points below the national departure figure.
Flights arriving at SFO that month were on time 56.0% of the time (10,644 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, air carrier 24% and national aviation system 21%.
- On time 73.2%
- Arrived 15+ minutes late 25.8%
- Cancelled 0.8%
- Diverted 0.2%
April 2024 against a year earlier, the airport's year and the nation
| Measure | Apr 2024 | Year earlier | SFO, 12 months to Jul 2026 | All reported flights, Apr 2024 |
|---|---|---|---|---|
| Departed on time | 70.3% | — | 75.1% | 80.5% |
| Arrived on time | 73.2% | — | 75.6% | 80.2% |
| Cancelled | 0.8% | — | 1.0% | 0.7% |
| Average departure delay (late minutes only) | 20.9 min | — | 17.8 min | 14.2 min |
| Scheduled departures a day | 354 | — | 404 | 19,406 |
| Scheduled departures | 10,622 | — | 147,566 | 582,185 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| UA United Airlines | 3,888 | 37% | 80.8% | 1.0 min | 0.4% |
| OO SkyWest Airlines | 2,580 | 24% | 71.7% | 9.2 min | 1.9% |
| DL Delta Air Lines | 1,087 | 10% | 73.2% | 12.3 min | 0.0% |
| AA American Airlines | 867 | 8% | 69.6% | 20.2 min | 0.6% |
| AS Alaska Airlines | 801 | 8% | 71.2% | 9.6 min | 0.2% |
| WN Southwest Airlines | 590 | 6% | 57.8% | 23.0 min | 0.5% |
| F9 Frontier Airlines | 382 | 4% | 36.9% | 47.2 min | 1.8% |
| B6 JetBlue Airways | 343 | 3% | 77.8% | -0.4 min | 0.3% |
| HA Hawaiian Airlines | 61 | 1% | 82.0% | -3.2 min | 6.6% |
| MQ Envoy Air | 23 | 0% | 78.3% | 0.7 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| SFO–LAX | San Francisco to Los Angeles | 990 | 66.1% | 18.7 min | 0.5% |
| SFO–SAN | San Francisco to San Diego | 548 | 64.1% | 16.0 min | 2.0% |
| SFO–SEA | San Francisco to Seattle | 515 | 70.7% | 9.3 min | 0.2% |
| SFO–JFK | San Francisco to New York | 513 | 78.9% | 3.0 min | 0.4% |
| SFO–DEN | San Francisco to Denver | 455 | 75.2% | 12.3 min | 0.4% |
| SFO–LAS | San Francisco to Las Vegas | 448 | 58.3% | 26.7 min | 0.2% |
| SFO–PHX | San Francisco to Phoenix | 424 | 69.3% | 12.1 min | 0.9% |
| SFO–ORD | San Francisco to Chicago | 420 | 79.8% | -1.3 min | 0.7% |
| SFO–SNA | San Francisco to Santa Ana | 343 | 67.6% | 10.6 min | 2.9% |
| SFO–DFW | San Francisco to Dallas/Fort Worth | 326 | 67.5% | 13.1 min | 1.5% |
| SFO–BOS | San Francisco to Boston | 324 | 71.3% | 8.3 min | 0.3% |
| SFO–EWR | San Francisco to Newark | 324 | 78.7% | 1.5 min | 1.5% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left SFO on time in April 2024?
70.3% of 10,622 scheduled domestic departures left less than 15 minutes late, and 73.2% reached their destination on time. The national figures that month were 80.5% and 80.2%.
How does that compare with a year earlier?
April 2023 is outside the 36 months on file, or the airport had too few reported flights that month.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2024; 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.