Route · DFW → SEA · 2020–2025 BTS data
Dallas/Fort Worth to Seattle
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DFW to SEA (Dallas/Fort Worth to Seattle) ranks #226 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.9%
- On-time
- -4.1 pts
- vs US avg
- 67 min
- Delay when late
- 24,424
- Flights
- #226 of 4927
- Corpus placement
Cancelled
1.7%
Best Month
Feb 2024 84%
Worst Month
May 2024 57%
Distance
1,660 mi
Carriers
14
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 453 | 176 | 3 | 1 | DL,F9,AS,AA |
| Nov 2025 | 412 | 106 | 8 | 0 | DL,F9,AA,AS |
| Oct 2025 | 442 | 136 | 4 | 1 | AA,AS,DL,F9 |
| Sep 2025 | 429 | 106 | 6 | 1 | DL,AA,AS |
| Aug 2025 | 475 | 157 | 12 | 1 | AA,F9,AS,DL |
| Jul 2025 | 506 | 184 | 8 | 1 | AA,AS,DL,F9 |
| Jun 2025 | 496 | 185 | 12 | 0 | AA,AS,DL,F9 |
| May 2025 | 472 | 158 | 7 | 0 | AA,AS,DL,F9 |
| Apr 2025 | 419 | 110 | 5 | 0 | DL,F9,AA,AS |
| Mar 2025 | 424 | 117 | 5 | 1 | AA,AS,DL,F9 |
| Feb 2025 | 357 | 74 | 1 | 1 | AA,AS,DL,F9 |
| Jan 2025 | 405 | 83 | 15 | 1 | AA,AS,DL,F9 |
| Dec 2024 | 446 | 112 | 8 | 2 | AA,AS,DL,F9,NK |
| Nov 2024 | 423 | 96 | 7 | 3 | AS,DL,F9,AA |
| Oct 2024 | 487 | 85 | 0 | 2 | AS,DL,F9,AA |
| Sep 2024 | 484 | 108 | 2 | 4 | AA,AS,DL,F9 |
| Aug 2024 | 527 | 162 | 4 | 1 | AA,AS,DL,F9 |
| Jul 2024 | 520 | 205 | 9 | 1 | AA,AS,DL,F9 |
| Jun 2024 | 451 | 170 | 5 | 1 | AA,AS,F9 |
| May 2024 | 400 | 172 | 25 | 1 | AA,AS |
| Apr 2024 | 315 | 81 | 5 | 0 | AA,AS |
| Mar 2024 | 333 | 73 | 5 | 0 | AA,AS |
| Feb 2024 | 303 | 48 | 1 | 2 | AA,AS |
| Jan 2024 | 319 | 96 | 21 | 0 | AA,AS |
DFW–SEA seasonal on-time pattern
Best: February (79.4%) · weakest: June (64.9%)
Strongest calendar month
February
79.4% on-time · ~268 flights/mo
Busiest calendar month
August
~406 flights/mo avg
Weakest calendar month
June
64.9% on-time · ~365 flights/mo
Cancellation Rate
1.7%
178 of 10,298 flights
Diversion Rate
0.2%
25 of 10,298 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DFW - Dallas/Fort Worth
Full on-time, delay-cause, and seasonal performance for Dallas/Fort Worth, TX.
DFW on-time profileSEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
SEA on-time profileCompare the two airports
See DFW and SEA side by side on delays, cancellations, and reliability.
Compare DFW vs SEAOrigin-hub reliability standing
Softer reliability from DFW
Among 183 routes leaving DFW, only 57 (including this one) clear below 75% on-time, while 13 stay ≥85% and 113 sit mid-band. Travelers comparing DFW options should weigh this 74.9% print against those peers · fleet on-time rank #4487 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DFW–SEA.
Routes with a similar on-time rate
What the Data Says About DFW to SEA
On-time performance on the DFW to SEA pairing (Dallas/Fort Worth to Seattle) trails a chunk of the network: 74.9% of 24,424 tracked flights arrived on schedule, with a 67.1-minute average delay on the ones that ran late. The route spans about 1,660 miles across 14 carriers. Cancellations over the trailing 24 months hit 1.7% (178 of 10,298 flights), with 0.2% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 84% on-time, while May 2024 came in at just 57% - a 27-point swing worth factoring into travel timing.
On the multi-year calendar, DFW–SEA peaks in February at 79.4% on-time while August carries the heaviest traffic (~406 flights per month) ; the softest month is June at 64.9%, a 14.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DFW to SEA rank among US routes by traffic? ▼
How often are flights delayed from DFW to SEA? ▼
What is the cancellation rate for DFW to SEA? ▼
How far is the flight from DFW to SEA? ▼
When is the best time to fly from DFW to SEA? ▼
Airports on this route
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.
Using DFW–SEA data
DFW–SEA sits 4.1 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare DFW and SEA airport profiles: delay causes and top routes differ even on the same corridor. DFW airport
- If your dates flex, February (79.4% on-time) beats June (64.9%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.9% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.