Route · IAD → ATL · 2020–2025 BTS data
Washington to Atlanta
The IAD–ATL corridor (Washington, DC → Atlanta, GA) runs ahead of the national average, served by 39 carriers across roughly 534 miles.
Data updated 2026-06-13
- 84.2%
- On-time
- +5.2 pts
- vs US avg
- 85 min
- Delay when late
- 20,387
- Flights
Cancelled
1.4%
Best Month
Feb 2024 96%
Worst Month
May 2025 67%
Distance
534 mi
Carriers
39
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 321 | 88 | 8 | 2 | DL,YX,F9,UA |
| Nov 2025 | 322 | 66 | 9 | 0 | UA,DL,F9 |
| Oct 2025 | 334 | 61 | 1 | 1 | DL,UA,F9 |
| Sep 2025 | 315 | 37 | 0 | 1 | UA,DL,F9 |
| Aug 2025 | 343 | 77 | 2 | 2 | YX,F9,UA,DL |
| Jul 2025 | 353 | 104 | 15 | 4 | DL,UA,F9 |
| Jun 2025 | 351 | 111 | 11 | 3 | DL,UA,YX,F9 |
| May 2025 | 349 | 115 | 2 | 1 | DL,UA,YX,F9 |
| Apr 2025 | 318 | 64 | 4 | 0 | DL,F9,UA |
| Mar 2025 | 315 | 63 | 2 | 0 | DL,YX,UA,F9 |
| Feb 2025 | 258 | 54 | 0 | 0 | DL,UA,YX,F9 |
| Jan 2025 | 272 | 74 | 14 | 0 | DL,UA,F9 |
| Dec 2024 | 308 | 65 | 0 | 0 | DL,F9,UA |
| Nov 2024 | 290 | 21 | 1 | 0 | UA,WN,DL,F9 |
| Oct 2024 | 318 | 29 | 1 | 0 | UA,DL |
| Sep 2024 | 305 | 52 | 1 | 0 | UA,DL |
| Aug 2024 | 306 | 55 | 3 | 1 | DL,UA |
| Jul 2024 | 294 | 84 | 16 | 0 | DL,UA |
| Jun 2024 | 312 | 54 | 0 | 0 | DL,UA |
| May 2024 | 279 | 56 | 4 | 2 | DL,UA |
| Apr 2024 | 235 | 32 | 0 | 0 | DL,UA |
| Mar 2024 | 209 | 26 | 0 | 0 | DL,YX,UA |
| Feb 2024 | 206 | 9 | 1 | 0 | DL,UA,YX |
| Jan 2024 | 222 | 35 | 3 | 1 | DL,WN,YX,UA |
Cancellation Rate
1.4%
98 of 7,135 flights
Diversion Rate
0.3%
18 of 7,135 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 →ATL - Atlanta
Full on-time, delay-cause, and seasonal performance for Atlanta, GA.
Destination airport →Compare the two airports
See IAD and ATL 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–ATL.
Routes with a similar on-time rate
What the Data Says About IAD to ATL
Bureau of Transportation Statistics records show Washington to Atlanta (IAD to ATL) running a 84.2% on-time rate over 20,387 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 85.0 minutes. The 534-mile corridor is served by 39 carriers, and over the last 24 months 1.4% of 7,135 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 96% on-time, while May 2025 came in at just 67% - a 29-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.