Route · SFO → PHL · 2020–2025 BTS data
San Francisco to Philadelphia
The SFO–PHL corridor (San Francisco, CA → Philadelphia, PA) runs ahead of the national average, served by 3 carriers across roughly 2,521 miles.
Data updated 2026-06-13
- 84.6%
- On-time
- +5.6 pts
- vs US avg
- 71 min
- Delay when late
- 7,127
- Flights
Cancelled
0.8%
Best Month
Apr 2025 92%
Worst Month
Jul 2025 73%
Distance
2,521 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 160 | 19 | 1 | 0 | AA,UA |
| Nov 2025 | 147 | 16 | 0 | 0 | UA,AA |
| Oct 2025 | 180 | 25 | 0 | 0 | AA,UA |
| Sep 2025 | 166 | 19 | 0 | 0 | UA,AA |
| Aug 2025 | 167 | 37 | 0 | 0 | AA,UA |
| Jul 2025 | 182 | 49 | 4 | 1 | AA,UA |
| Jun 2025 | 150 | 21 | 2 | 3 | AA,UA |
| May 2025 | 152 | 32 | 1 | 0 | AA,UA |
| Apr 2025 | 141 | 11 | 0 | 0 | UA,AA |
| Mar 2025 | 136 | 14 | 2 | 0 | AA,UA |
| Feb 2025 | 100 | 14 | 2 | 0 | AA,UA |
| Jan 2025 | 118 | 14 | 0 | 0 | AA,UA |
| Dec 2024 | 138 | 24 | 1 | 0 | AA,UA |
| Nov 2024 | 132 | 16 | 0 | 0 | UA,AA |
| Oct 2024 | 137 | 11 | 0 | 1 | UA,AA |
| Sep 2024 | 136 | 28 | 0 | 0 | UA,AA |
| Aug 2024 | 131 | 26 | 5 | 0 | AA,UA |
| Jul 2024 | 118 | 29 | 3 | 0 | AA,UA |
| Jun 2024 | 94 | 23 | 2 | 0 | AA,UA |
| May 2024 | 123 | 21 | 0 | 0 | AA,UA |
| Apr 2024 | 117 | 21 | 0 | 0 | AA,UA |
| Mar 2024 | 93 | 22 | 0 | 0 | AA,UA |
| Feb 2024 | 81 | 21 | 0 | 0 | AA,UA |
| Jan 2024 | 92 | 19 | 2 | 1 | AA,UA |
Cancellation Rate
0.8%
25 of 3,191 flights
Diversion Rate
0.2%
6 of 3,191 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Origin airport →PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Destination airport →Compare the two airports
See SFO and PHL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SFO–PHL.
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What the Data Says About SFO to PHL
Bureau of Transportation Statistics records show San Francisco to Philadelphia (SFO to PHL) running a 84.6% on-time rate over 7,127 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 71.3 minutes. The 2,521-mile corridor is served by 3 carriers, and over the last 24 months 0.8% of 3,191 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Apr 2025 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 73% - a 19-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.