Route · IAD → SFO · 2020–2025 BTS data
Washington to San Francisco
The IAD–SFO corridor (Washington, DC → San Francisco, CA) runs ahead of the national average, served by 3 carriers across roughly 2,419 miles.
Data updated 2026-06-13
- 81.5%
- On-time
- +2.5 pts
- vs US avg
- 73 min
- Delay when late
- 13,283
- Flights
Cancelled
1.0%
Best Month
Oct 2024 94%
Worst Month
Feb 2025 67%
Distance
2,419 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 245 | 76 | 0 | 1 | UA |
| Nov 2025 | 230 | 40 | 2 | 0 | UA |
| Oct 2025 | 246 | 42 | 2 | 0 | UA |
| Sep 2025 | 206 | 26 | 0 | 0 | UA |
| Aug 2025 | 255 | 42 | 3 | 0 | UA,AS |
| Jul 2025 | 267 | 82 | 3 | 1 | AS,UA |
| Jun 2025 | 275 | 80 | 0 | 0 | AS,UA |
| May 2025 | 273 | 60 | 1 | 0 | AS,UA |
| Apr 2025 | 286 | 35 | 2 | 2 | UA,AS |
| Mar 2025 | 226 | 35 | 1 | 0 | AS,UA |
| Feb 2025 | 174 | 57 | 0 | 1 | UA |
| Jan 2025 | 192 | 28 | 2 | 0 | AS,UA |
| Dec 2024 | 260 | 55 | 1 | 0 | AS,UA |
| Nov 2024 | 257 | 54 | 2 | 2 | UA,AS |
| Oct 2024 | 267 | 15 | 1 | 0 | UA,AS |
| Sep 2024 | 245 | 29 | 0 | 0 | UA,AS |
| Aug 2024 | 249 | 60 | 5 | 1 | AS,UA |
| Jul 2024 | 248 | 57 | 2 | 0 | AS,UA |
| Jun 2024 | 240 | 56 | 0 | 0 | AS,UA |
| May 2024 | 242 | 77 | 0 | 0 | AS,UA |
| Apr 2024 | 227 | 63 | 0 | 0 | AS,UA |
| Mar 2024 | 213 | 42 | 1 | 1 | AS,UA |
| Feb 2024 | 153 | 29 | 2 | 0 | UA |
| Jan 2024 | 153 | 29 | 24 | 0 | AS,UA |
Cancellation Rate
1.0%
54 of 5,629 flights
Diversion Rate
0.2%
9 of 5,629 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Origin airport →SFO - San Francisco
Full on-time, delay-cause, and seasonal performance for San Francisco, CA.
Destination airport →Compare the two airports
See IAD 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 IAD–SFO.
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What the Data Says About IAD to SFO
13,283 tracked flights put the IAD to SFO pairing (Washington to San Francisco) at a 81.5% on-time rate, squarely in line with the wider network. Delays that do occur run 73.1 minutes on average. Across the 2,419-mile route and its 3 carriers, the trailing 24 months show 1.0% cancelled and 0.2% diverted (5,629 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 94% on-time, while Feb 2025 came in at just 67% - a 27-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.