Route · PHL → IAD · 2020–2025 BTS data
Philadelphia to Washington
The PHL–IAD corridor (Philadelphia, PA → Washington, DC) runs ahead of the national average, served by 6 carriers across roughly 135 miles.
Data updated 2026-06-13
- 85.4%
- On-time
- +6.4 pts
- vs US avg
- 101 min
- Delay when late
- 758
- Flights
Cancelled
4.1%
Best Month
Oct 2020 96%
Worst Month
Aug 2021 70%
Distance
135 mi
Carriers
6
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Nov 2025 | 50 | 3 | 5 | 0 | YX |
| Feb 2022 | 75 | 15 | 3 | 0 | YV,YX,UA |
| Jan 2022 | 61 | 7 | 11 | 0 | UA,YV,YX |
| Dec 2021 | 32 | 5 | 0 | 0 | UA,YV |
| Oct 2021 | 87 | 10 | 3 | 0 | UA,YV,YX |
| Sep 2021 | 88 | 15 | 1 | 0 | YV,YX |
| Aug 2021 | 93 | 28 | 1 | 0 | YV,YX |
| Jul 2021 | 61 | 13 | 5 | 0 | YV,YX |
| Jan 2021 | 46 | 1 | 1 | 0 | YX |
| Oct 2020 | 52 | 2 | 0 | 0 | YV |
| Aug 2020 | 62 | 5 | 1 | 0 | YV |
| Jul 2020 | 51 | 7 | 0 | 0 | YV |
Cancellation Rate
4.1%
31 of 758 flights
Diversion Rate
0.0%
0 of 758 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 →IAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Destination airport →Compare the two airports
See PHL and IAD 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–IAD.
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What the Data Says About PHL to IAD
Philadelphia to Washington (PHL to IAD) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85.4% on-time rate across 758 flights, with delays that do happen averaging 100.5 minutes. The corridor runs roughly 135 miles and is served by 6 carriers. Over the most recent 24 months, 31 of 758 flights were cancelled (4.1%) and 0 diverted (0.0%).
The monthly split is wide on this route: Oct 2020 posted the strongest performance at 96% on-time, while Aug 2021 came in at just 70% - a 26-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.