SEA to ANC flight delays & on-time performance
Nonstop flights from Seattle–Tacoma International Airport to Ted Stevens Anchorage International Airport · 1,448 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SEA or ANC 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 Anchorage (ANC) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.8% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (77% on time); Alaska Airlines was the least (76%).
- Departures scheduled around 7am did best (89% on time); around 11am did worst (68%).
- Tuesday was the most reliable day to fly (80% on time) and Thursday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (50%).
Which airline is most on time from SEA to ANC?
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 | 77% | 0.6% | 15 min | 6.6% | 1,614 |
| Alaska Airlines | 76% | 0.9% | 13 min | 4.8% | 4,982 |
| Hawaiian Airlines | 57% | 0.0% | 20 min | 8.2% | 61 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am94%114 flights
- 7am89%405 flights
- 8am85%240 flights
- 9am76%549 flights
- 10am76%482 flights
- 11am68%490 flights
- 12pm79%246 flights
- 1pm75%522 flights
- 2pm82%269 flights
- 3pm76%207 flights
- 4pm75%216 flights
- 5pm73%570 flights
- 6pm76%320 flights
- 7pm75%467 flights
- 8pm71%330 flights
- 9pm74%500 flights
- 10pm73%344 flights
- 11pm77%386 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%0.6% cancelled
- Tuesday80%0.5% cancelled
- Wednesday76%0.3% cancelled
- Thursday71%0.6% cancelled
- Friday75%1.1% cancelled
- Saturday77%1.0% cancelled
- Sunday79%1.3% 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)50%
- Late-arriving aircraft28%
- Air traffic control & airport congestion19%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)70%
- Extreme weather21%
- Air traffic control & airport congestion9%
- Security0%
SEA to ANC: common questions
- How often are SEA to ANC flights on time?
- 76% 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 Anchorage cancelled?
- 0.8% of scheduled flights were cancelled (53 of 6,657).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 51 min behind schedule on average, and 5.3% 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: ANC to SEA — 86% 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 → ANC, nonstop flights by US airlines that report to the DOT. How we calculate this.