Flight profile · Frontier Airlines
F91949
Atlanta (ATL) to San Francisco (SFO) · scheduled 7:05 PM – 9:23 PM
How F91949 performs
332 operations, 2024-11-30 to 2026-05-20.
F91949 arrived on time 65.2% of the time, against 73.2% for all ATL → SFO flights — this specific departure is 7.9 percentage points worse than the route as a whole. Against Frontier Airlines’s own flights on this route it is 4.0 points better.
Source: US DOT Bureau of Transportation Statistics · 332 operations between 2024-11-30 to 2026-05-20
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| F91949 | 65.2% | 1.20% | 1 min | 14.3% | 332 |
| Frontier Airlines on ATL → SFO | 61.2% | 2.31% | 5 min | 16.6% | 911 |
| All ATL → SFO flights | 73.2% | 0.84% | -1 min | 8.2% | 9,759 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-11-30 to 2026-05-20
Why F91949 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for F91949 on ATL → SFO. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on ATL → SFO
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL656 | Delta Air Lines | 75.7% | 2 min early | 754 |
| UA1259 | United Airlines | 72.6% | 3 min early | 672 |
| DL823 | Delta Air Lines | 70.0% | 0 min early | 821 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 332 records of F91949 operating ATL → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
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