Route · SEA → ATL · 2020–2025 BTS data
Seattle to Atlanta
The SEA–ATL corridor (Seattle, WA → Atlanta, GA) runs ahead of the national average, served by 2 carriers across roughly 2,182 miles.
Data updated 2026-06-13
- 82.5%
- On-time
- +3.5 pts
- vs US avg
- 69 min
- Delay when late
- 19,031
- Flights
Cancelled
0.9%
Best Month
Sep 2025 90%
Worst Month
Jul 2024 69%
Distance
2,182 mi
Carriers
2
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 269 | 55 | 4 | 0 | DL,AS |
| Nov 2025 | 256 | 33 | 1 | 2 | AS,DL |
| Oct 2025 | 295 | 43 | 3 | 2 | AS,DL |
| Sep 2025 | 284 | 28 | 0 | 0 | DL,AS |
| Aug 2025 | 316 | 64 | 1 | 2 | AS,DL |
| Jul 2025 | 347 | 106 | 1 | 1 | AS,DL |
| Jun 2025 | 329 | 94 | 4 | 4 | AS,DL |
| May 2025 | 292 | 58 | 0 | 2 | AS,DL |
| Apr 2025 | 243 | 54 | 1 | 1 | DL,AS |
| Mar 2025 | 224 | 27 | 1 | 1 | AS,DL |
| Feb 2025 | 184 | 29 | 0 | 0 | AS,DL |
| Jan 2025 | 215 | 35 | 7 | 0 | AS,DL |
| Dec 2024 | 270 | 42 | 0 | 0 | AS,DL |
| Nov 2024 | 263 | 33 | 0 | 0 | AS,DL |
| Oct 2024 | 299 | 50 | 0 | 0 | AS,DL |
| Sep 2024 | 330 | 69 | 2 | 2 | AS,DL |
| Aug 2024 | 374 | 91 | 0 | 0 | AS,DL |
| Jul 2024 | 377 | 116 | 22 | 0 | AS,DL |
| Jun 2024 | 348 | 67 | 0 | 0 | AS,DL |
| May 2024 | 312 | 63 | 0 | 1 | AS,DL |
| Apr 2024 | 269 | 46 | 0 | 0 | AS,DL |
| Mar 2024 | 251 | 42 | 0 | 0 | AS,DL |
| Feb 2024 | 211 | 27 | 0 | 1 | AS,DL |
| Jan 2024 | 233 | 44 | 16 | 1 | AS,DL |
Cancellation Rate
0.9%
63 of 6,791 flights
Diversion Rate
0.3%
20 of 6,791 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Origin airport →ATL - Atlanta
Full on-time, delay-cause, and seasonal performance for Atlanta, GA.
Destination airport →Compare the two airports
See SEA 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 SEA–ATL.
Routes with a similar on-time rate
What the Data Says About SEA to ATL
Bureau of Transportation Statistics records show Seattle to Atlanta (SEA to ATL) running a 82.5% on-time rate over 19,031 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 69.1 minutes. The 2,182-mile corridor is served by 2 carriers, and over the last 24 months 0.9% of 6,791 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 90% on-time, while Jul 2024 came in at just 69% - a 21-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.