SEA to DFW flight delays & on-time performance
Nonstop flights from Seattle–Tacoma International Airport to Dallas Fort Worth International Airport · 1,660 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SEA or DFW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Seattle (SEA) to Dallas/Fort Worth (DFW) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 1.9% were cancelled, and 6% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (81% on time); Delta Air Lines was the least (76%).
- Departures scheduled around 5am did best (93% on time); around 11am did worst (69%).
- Wednesday was the most reliable day to fly (83% on time) and Sunday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (47%).
Which airline is most on time from SEA to DFW?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 81% | 0.9% | 10 min | 3.5% | 1,756 |
| American Airlines | 78% | 2.6% | 22 min | 7.8% | 2,738 |
| Delta Air Lines | 76% | 1.7% | 21 min | 8.9% | 715 |
| Frontier Airlines | 50% | 0.0% | 16 min | 0.0% | 20 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12am84%341 flights
- 5am93%283 flights
- 6am91%260 flights
- 7am89%475 flights
- 8am86%243 flights
- 9am76%526 flights
- 10am75%418 flights
- 11am69%414 flights
- 12pm78%107 flights
- 1pm75%346 flights
- 2pm70%170 flights
- 3pm70%223 flights
- 5pm74%858 flights
- 6pm76%126 flights
- 10pm88%82 flights
- 11pm69%327 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%1.8% cancelled
- Tuesday82%1.4% cancelled
- Wednesday83%1.1% cancelled
- Thursday80%1.1% cancelled
- Friday75%1.9% cancelled
- Saturday78%3.1% cancelled
- Sunday71%3.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)47%
- Late-arriving aircraft36%
- Air traffic control & airport congestion14%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather76%
- Airline (crew, maintenance, cleaning, fueling)22%
- Air traffic control & airport congestion2%
- Security0%
SEA to DFW: common questions
- How often are SEA to DFW flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Seattle to Dallas/Fort Worth cancelled?
- 1.9% of scheduled flights were cancelled (99 of 5,229).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 77 min behind schedule on average, and 6.5% of flights were an hour or more late.
- How long is taxi time at SEA?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DFW to SEA — 71% on time
More flights from Seattle
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SEA → DFW, nonstop flights by US airlines that report to the DOT. How we calculate this.