Best Time to Fly SEA to ANC: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Ted Stevens Anchorage International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.2% of Seattle (SEA) to Anchorage (ANC) flights arrived on time (6,657 scheduled flights). That is 1.4 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 77.4%, while Hawaiian Airlines trailed at 57.4%.
November has been the best month (83% on time) and Thursday the weakest day of the week (73%).
0.8% of flights were cancelled, versus 1.8% nationally.
SEA to ANC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 77.4% | 63 min | 0.6% | 1,614 |
| Alaska Airlines | 76.1% | 47 min | 0.9% | 4,982 |
| Hawaiian Airlines | 57.4% | 43 min | 0.0% | 61 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to ANC
On-time arrival % by scheduled departure hour (local time), 13,797 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 2 | |
| 5am–6am | 97.4% | 0.0% | 39 |
| 6am–7am | 89.0% | 6.6% | 303 |
| 7am–8am | 88.0% | 1.5% | 818 |
| 8am–9am | 83.1% | 2.8% | 531 |
| 9am–10am | 76.6% | 0.7% | 1,100 |
| 10am–11am | 75.0% | 0.8% | 1,133 |
| 11am–12pm | 63.0% | 0.7% | 886 |
| 12pm–1pm | 77.3% | 0.4% | 699 |
| 1pm–2pm | 79.0% | 0.2% | 1,080 |
| 2pm–3pm | 79.5% | 0.3% | 613 |
| 3pm–4pm | 75.0% | 0.7% | 589 |
| 4pm–5pm | 75.3% | 0.7% | 290 |
| 5pm–6pm | 70.6% | 0.7% | 1,178 |
| 6pm–7pm | 75.3% | 0.4% | 500 |
| 7pm–8pm | 75.5% | 0.3% | 877 |
| 8pm–9pm | 72.8% | 0.4% | 713 |
| 9pm–10pm | 72.2% | 0.3% | 995 |
| 10pm–11pm | 66.0% | 0.2% | 829 |
| 11pm–12am | 77.1% | 0.2% | 622 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA to ANC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 70.6% | -6.2 pts | 0.0% | 218 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.2% | -1.7 pts | 1.6% | 489 |
| Summer peak (Jun 15 - Aug 15) | 70.3% | -6.5 pts | 1.0% | 2,985 |
| All other days | 76.9% | — | 0.7% | 10,105 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).