Seattle (SEA) to Dallas/Fort Worth (DFW): On-Time Performance
Data through July 2026
When you fly SEA to DFW matters as much as anything else about the booking: the route swung from 88% on-time in February 2026 to just 61% in June 2025. Across the full period the route averages 75% on-time against a national 78%.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 14
- last 12 months
- Duration
- 3h 58m
- scheduled
- Distance
- 1,660 mi
Best airline from SEA to DFW
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 77% | 20 min | 2.2% | 5,802 |
| Delta Air Lines | 76% | 20 min | 1.4% | 1,453 |
| Alaska Airlines | 73% | 13 min | 0.9% | 3,764 |
| Frontier Airlines | 51% | 45 min | 1.1% | 177 |
Monthly on-time trend
Best time to fly from SEA to DFW
Aim for departures around 5 a.m. (89% on-time); avoid 12 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 18 min |
| Tuesday | 78% | 17 min |
| Wednesdaybest | 80% | 15 min |
| Thursday | 76% | 18 min |
| Friday | 74% | 20 min |
| Saturday | 76% | 17 min |
| Sunday | 70% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations42%
- National airspace system18%
- Weather3%
Frequently asked questions
- How often are flights from SEA to DFW delayed?
- 25% of SEA–DFW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from SEA to DFW?
- American Airlines has the best on-time record on this route at 77%, based on 5,802 flights. 4 airlines flew SEA–DFW frequently enough to compare in this period.
- What is the best time of day to fly from SEA to DFW?
- Departures around 5 a.m. have the best record (89% on-time), while departures around 12 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SEA to DFW?
- The scheduled SEA–DFW flight time averages 3h 58m over 1,660 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are SEA to DFW flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SEA to DFW?
- June 2025 was the roughest month in this dataset, with only 61% of arrivals on time. The best was February 2026 at 88%. If your dates are flexible, that 27-point gap is worth planning around.
Explore related pages
More routes from SEA
Other ways to fly to Dallas/Fort Worth (DFW)
Related guides
Based on 11,196 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.