San Francisco International (SFO) on-time performance, September 2026
16,398 scheduled airline departures from San Francisco in September 2026, 69.2% of them on time. Measured from FAA departure data, updated every morning.
On time, day by day
Share of departures within 15 minutes of schedule, by day. Light bars show each day's departures for context. Worst day: Monday 28 September at 43.3%. Best: Wednesday 30 September at 83.6%.
Airlines at SFO, ranked by on-time share
Scheduled airlines with at least 30 departures from SFO in the month. Regional partners (SkyWest, Republic, Envoy and the like) appear under their own names; fractional and charter operators are in the totals but not listed.
| Airline | Departures | On time | 45+ min late | Avg delay (min) |
|---|---|---|---|---|
| Copa Airlines CMP | 42 | 100.0% | 0.0% | -10.6 |
| SJX SJX | 30 | 100.0% | 0.0% | -11.0 |
| Swissair SWR | 30 | 100.0% | 0.0% | -4.5 |
| China Airlines CAL | 58 | 98.3% | 0.0% | -14.4 |
| TAI TAI | 62 | 91.9% | 0.0% | -9.5 |
| Cathay Pacific CPA | 60 | 91.7% | 1.7% | 0.3 |
| Korean Air KAL | 56 | 91.1% | 1.8% | -11.8 |
| EVA Air EVA | 98 | 90.8% | 6.1% | 5.3 |
| Singapore Airlines SIA | 60 | 90.0% | 3.3% | 0.2 |
| Asiana Airlines AAR | 30 | 90.0% | 0.0% | 2.9 |
| Virgin Atlantic VIR | 33 | 81.8% | 6.1% | 13.2 |
| Aeromexico AMX | 55 | 80.0% | 1.8% | 1.5 |
| American Airlines AAL | 1,104 | 77.5% | 11.2% | 8.3 |
| Delta Air Lines DAL | 1,199 | 74.0% | 11.6% | 8.3 |
| Japan Airlines Domestic JAL | 59 | 72.9% | 11.9% | 11.6 |
| Alaska Airlines ASA | 1,071 | 72.2% | 11.7% | 9.3 |
| Breeze Airways MXY | 57 | 71.9% | 7.0% | 8.9 |
| Air Transport International ATN | 31 | 71.0% | 0.0% | 2.0 |
| United Airlines UAL | 6,694 | 70.8% | 11.1% | 12.9 |
| All Nippon Airways ANA | 60 | 70.0% | 8.3% | 8.2 |
| Jazz (Air Canada Express) JZA | 50 | 70.0% | 16.0% | 10.1 |
| KLM KLM | 30 | 70.0% | 6.7% | 10.1 |
| JetBlue JBU | 374 | 66.8% | 17.9% | 14.9 |
| SkyWest SKW | 2,417 | 65.9% | 16.7% | 15.0 |
| Air Canada ACA | 246 | 64.6% | 14.2% | 13.3 |
| Transportes Aereos I.R. Crusoe ROU | 45 | 64.4% | 6.7% | 10.1 |
| Horizon Air QXE | 110 | 63.6% | 18.2% | 19.1 |
| British Airways BAW | 58 | 62.1% | 12.1% | 20.9 |
| WestJet WJA | 71 | 60.6% | 25.4% | 18.2 |
| Frontier Airlines FFT | 368 | 59.2% | 26.6% | 23.3 |
| Air France AFR | 53 | 54.7% | 9.4% | 14.8 |
| Aer Lingus EIN | 30 | 50.0% | 20.0% | 28.7 |
| Porter Airlines POE | 30 | 50.0% | 20.0% | 29.8 |
| Southwest Airlines SWA | 933 | 48.4% | 29.9% | 30.0 |
| Turkish Airlines THY | 38 | 42.1% | 21.1% | 26.2 |
| Lufthansa DLH | 61 | 41.0% | 19.7% | 31.0 |
| Air India Limited AIC | 37 | 40.5% | 18.9% | 30.3 |
| Emirates UAE | 30 | 36.7% | 16.7% | 27.7 |
| TZP TZP | 30 | 16.7% | 3.3% | 25.4 |
Destinations with the longest delays
Routes from SFO with at least 20 departures, by average departure delay.
| To | Flights | On time | Avg delay |
|---|---|---|---|
| DAL Dallas | 33 | 18.2% | 54.8 |
| STL St. Louis | 54 | 38.9% | 44.4 |
| BOS Boston | 425 | 47.8% | 39.0 |
| MTY Monterrey | 30 | 30.0% | 33.4 |
| MSO Missoula | 30 | 50.0% | 31.9 |
| CCU Calcutta | 36 | 41.7% | 30.6 |
| DUB Dublin | 30 | 50.0% | 28.7 |
| MEL Melbourne | 29 | 37.9% | 28.7 |
| DXB Dubai | 30 | 36.7% | 27.7 |
| SAN San Diego | 689 | 50.1% | 27.4 |
Busiest destinations
The ten routes with the most departures from SFO this month.
| To | Flights | On time | Avg delay |
|---|---|---|---|
| LAX Los Angeles | 1,143 | 68.1% | 13.3 |
| SAN San Diego | 689 | 50.1% | 27.4 |
| SEA Seattle | 611 | 69.2% | 9.9 |
| ORD Chicago | 592 | 75.2% | 11.2 |
| JFK New York | 588 | 75.0% | 8.0 |
| LAS Las Vegas | 537 | 62.6% | 19.7 |
| DEN Denver | 466 | 61.2% | 19.0 |
| BOS Boston | 425 | 47.8% | 39.0 |
| DFW Dallas-Fort Worth | 400 | 75.5% | 9.3 |
| SNA Santa Ana | 388 | 66.8% | 12.8 |
Other months for SFO
Airline pages for September 2026
How we measure
On time means the aircraft took off within 15 minutes of its scheduled departure, after subtracting the departure airport's normal taxi time at SFO (FAA SWIM reports wheels-off, not push-back, so the median taxi time of the last 30 days is taken off every flight first). Average delay is the mean of that taxi-adjusted delay over all departures; early departures count as negative minutes, so an operator that routinely leaves early can show a negative average. 45+ min late is the share of departures that left 45 minutes or more behind schedule, the point at which most connections are at risk.
Scope: scheduled airlines only, the same set as the monthly State of the Sky report (operators with published routes; private, fractional and charter operators are left out), so the two publications give the same numbers for the same month. Departures are counted by scheduled day (UTC). Each day's flights are rolled up overnight and published the next morning; the newest day keeps filling in for a day or two and is only shown once it is substantially complete. Figures can differ by a few tenths of a point from the State of the Sky report for the same month: that report is frozen on the 2nd of the following month, while these pages are rebuilt from the live rollup, which recomputes each airport's taxi baseline nightly and re-rolls the last week of the month as late departure times arrive (September 2026 at SFO: 16,398 departures in both, 69.2% on time here against 69.5% in the report).
Source: FAA System Wide Information Management (SWIM) flight plans and departure times, processed by PlaneTrack. Free to quote with credit to PlaneTrack (CC BY 4.0).