Route · SLC → PHL · 2020–2025 BTS data
Salt Lake City to Philadelphia
The SLC–PHL corridor (Salt Lake City, UT → Philadelphia, PA) runs ahead of the national average, served by 3 carriers across roughly 1,927 miles.
Data updated 2026-06-13
- 82.1%
- On-time
- +3.1 pts
- vs US avg
- 66 min
- Delay when late
- 3,000
- Flights
Cancelled
1.9%
Best Month
Aug 2025 90%
Worst Month
Jul 2024 74%
Distance
1,927 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 62 | 12 | 1 | 0 | DL,AA |
| Nov 2025 | 44 | 12 | 0 | 0 | DL |
| Oct 2025 | 48 | 8 | 0 | 0 | DL |
| Sep 2025 | 49 | 5 | 0 | 0 | DL,AA |
| Aug 2025 | 86 | 9 | 2 | 1 | AA,DL |
| Jul 2025 | 92 | 17 | 6 | 2 | AA,DL |
| Jun 2025 | 83 | 17 | 2 | 0 | AA,DL |
| May 2025 | 48 | 8 | 0 | 0 | DL |
| Apr 2025 | 46 | 8 | 0 | 0 | DL |
| Mar 2025 | 49 | 13 | 0 | 0 | DL |
| Feb 2025 | 42 | 4 | 0 | 0 | DL |
| Jan 2025 | 51 | 6 | 0 | 0 | AA,DL |
| Dec 2024 | 67 | 8 | 1 | 0 | AA,DL |
| Nov 2024 | 53 | 6 | 0 | 0 | DL,AA |
| Oct 2024 | 45 | 5 | 0 | 0 | DL |
| Sep 2024 | 49 | 5 | 0 | 0 | AA,DL |
| Aug 2024 | 86 | 19 | 4 | 0 | AA,DL |
| Jul 2024 | 86 | 22 | 8 | 2 | AA,DL |
| Jun 2024 | 80 | 15 | 3 | 0 | AA,DL |
| May 2024 | 48 | 9 | 0 | 0 | DL |
| Apr 2024 | 47 | 14 | 0 | 0 | DL |
| Mar 2024 | 49 | 16 | 0 | 0 | DL |
| Feb 2024 | 37 | 4 | 0 | 0 | DL |
| Jan 2024 | 46 | 10 | 0 | 0 | AA,DL |
Cancellation Rate
1.9%
27 of 1,393 flights
Diversion Rate
0.4%
5 of 1,393 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SLC - Salt Lake City
Full on-time, delay-cause, and seasonal performance for Salt Lake City, UT.
Origin airport →PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Destination airport →Compare the two airports
See SLC 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 SLC–PHL.
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What the Data Says About SLC to PHL
Bureau of Transportation Statistics records show Salt Lake City to Philadelphia (SLC to PHL) running a 82.1% on-time rate over 3,000 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 66.1 minutes. The 1,927-mile corridor is served by 3 carriers, and over the last 24 months 1.9% of 1,393 flights were cancelled, 0.4% diverted.
The monthly split is wide on this route: Aug 2025 posted the strongest performance at 90% on-time, while Jul 2024 came in at just 74% - a 15-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.