Route · PHL → SFO · 2020–2025 BTS data
Philadelphia to San Francisco
The PHL–SFO corridor (Philadelphia, PA → San Francisco, CA) runs ahead of the national average, served by 3 carriers across roughly 2,521 miles.
Data updated 2026-06-13
- 79.7%
- On-time
- +0.7 pts
- vs US avg
- 70 min
- Delay when late
- 7,132
- Flights
Cancelled
0.8%
Best Month
Sep 2025 87%
Worst Month
May 2024 64%
Distance
2,521 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 159 | 56 | 1 | 0 | AA,UA |
| Nov 2025 | 147 | 21 | 0 | 0 | UA,AA |
| Oct 2025 | 180 | 35 | 0 | 0 | AA,UA |
| Sep 2025 | 167 | 21 | 0 | 1 | UA,AA |
| Aug 2025 | 167 | 46 | 1 | 0 | AA,UA |
| Jul 2025 | 182 | 56 | 4 | 0 | AA,UA |
| Jun 2025 | 150 | 49 | 2 | 0 | AA,UA |
| May 2025 | 152 | 31 | 1 | 0 | AA,UA |
| Apr 2025 | 141 | 22 | 0 | 0 | UA,AA |
| Mar 2025 | 136 | 32 | 2 | 0 | AA,UA |
| Feb 2025 | 99 | 31 | 2 | 0 | AA,UA |
| Jan 2025 | 117 | 23 | 0 | 1 | AA,UA |
| Dec 2024 | 139 | 36 | 1 | 0 | AA,UA |
| Nov 2024 | 131 | 41 | 0 | 0 | UA,AA |
| Oct 2024 | 137 | 27 | 0 | 0 | UA,AA |
| Sep 2024 | 136 | 34 | 0 | 1 | UA,AA |
| Aug 2024 | 131 | 40 | 5 | 2 | AA,UA |
| Jul 2024 | 119 | 29 | 4 | 1 | AA,UA |
| Jun 2024 | 94 | 21 | 2 | 1 | AA,UA |
| May 2024 | 123 | 44 | 0 | 0 | AA,UA |
| Apr 2024 | 117 | 39 | 0 | 1 | AA,UA |
| Mar 2024 | 93 | 20 | 0 | 1 | AA,UA |
| Feb 2024 | 81 | 20 | 0 | 0 | AA,UA |
| Jan 2024 | 94 | 21 | 2 | 0 | AA,UA |
Cancellation Rate
0.8%
27 of 3,192 flights
Diversion Rate
0.3%
9 of 3,192 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Origin airport →SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Destination airport →Compare the two airports
See PHL and SFO side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHL–SFO.
Routes with a similar on-time rate
What the Data Says About PHL to SFO
7,132 tracked flights put the PHL to SFO pairing (Philadelphia to San Francisco) at a 79.7% on-time rate, squarely in line with the wider network. Delays that do occur run 69.9 minutes on average. Across the 2,521-mile route and its 3 carriers, the trailing 24 months show 0.8% cancelled and 0.3% diverted (3,192 flights sampled).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 87% on-time, while May 2024 came in at just 64% - a 23-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.