DFW to SEA flight delays & on-time performance
Nonstop flights from Dallas Fort Worth International Airport to Seattle–Tacoma International Airport · 1,660 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DFW or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Dallas/Fort Worth (DFW) to Seattle (SEA) arrived on time 71% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2% were cancelled, and 9% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (79% on time); American Airlines was the least (65%).
- Departures scheduled around 6am did best (84% on time); around 10pm did worst (46%).
- Tuesday was the most reliable day to fly (73% on time) and Sunday the least (66%).
- The largest source of delay minutes was late-arriving aircraft (39%).
Which airline is most on time from DFW to SEA?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 79% | 1.8% | 21 min | 7.3% | 715 |
| Alaska Airlines | 76% | 1.2% | 15 min | 5.8% | 1,756 |
| American Airlines | 65% | 2.6% | 24 min | 11.3% | 2,737 |
| Frontier Airlines | 65% | 0.0% | 10 min | 0.0% | 20 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am84%451 flights
- 7am83%459 flights
- 8am72%497 flights
- 9am78%280 flights
- 10am79%395 flights
- 12pm75%218 flights
- 1pm74%286 flights
- 2pm62%232 flights
- 3pm75%296 flights
- 4pm69%604 flights
- 5pm64%177 flights
- 6pm65%349 flights
- 7pm61%265 flights
- 8pm58%410 flights
- 9pm44%100 flights
- 10pm46%187 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday71%2.6% cancelled
- Tuesday73%1.8% cancelled
- Wednesday73%0.8% cancelled
- Thursday72%1.0% cancelled
- Friday70%1.8% cancelled
- Saturday69%2.8% cancelled
- Sunday66%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.
- Late-arriving aircraft39%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion17%
- Extreme weather9%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather75%
- Airline (crew, maintenance, cleaning, fueling)23%
- Air traffic control & airport congestion2%
- Security0%
DFW to SEA: common questions
- How often are DFW to SEA flights on time?
- 71% 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 Dallas/Fort Worth to Seattle cancelled?
- 2.0% of scheduled flights were cancelled (104 of 5,228).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 64 min behind schedule on average, and 8.8% of flights were an hour or more late.
- How long is taxi time at DFW?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to DFW — 78% on time
More flights from Dallas/Fort Worth
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DFW → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.