Best Time to Fly FAI to SEA: On-Time Stats by Hour & Airline
Fairbanks International → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
2,290 flights were scheduled from Fairbanks (FAI) to Seattle (SEA) in the last 12 months, and 82.1% of those that flew arrived on time, 4.5 points above the US average of 77.6%.
Alaska Airlines was the most punctual of the 2 airlines on the route at 83.8%, while Delta Air Lines trailed at 75.5%.
April has been the best month (91% on time) and Monday the weakest day of the week (81%).
1.0% of flights were cancelled, versus 1.8% nationally.
FAI to SEA 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 |
|---|---|---|---|---|
| Alaska Airlines | 83.8% | 52 min | 0.6% | 1,808 |
| Delta Air Lines | 75.5% | 104 min | 2.5% | 482 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly FAI to SEA
On-time arrival % by scheduled departure hour (local time), 4,673 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 89.2% | 0.7% | 289 |
| 1am–2am | 81.5% | 1.5% | 1,092 |
| 2am–3am | 80.0% | 0.8% | 377 |
| 3am–4am | Limited data | 1 | |
| 5am–6am | 87.5% | 0.9% | 347 |
| 6am–7am | 84.1% | 0.7% | 152 |
| 7am–8am | 89.5% | 0.0% | 229 |
| 8am–9am | 83.7% | 1.4% | 138 |
| 9am–10am | 93.3% | 1.6% | 61 |
| 10am–11am | 89.2% | 0.0% | 214 |
| 11am–12pm | 86.7% | 2.7% | 185 |
| 12pm–1pm | 89.9% | 0.4% | 538 |
| 1pm–2pm | 77.0% | 0.0% | 61 |
| 2pm–3pm | 80.0% | 0.0% | 55 |
| 3pm–4pm | 77.1% | 0.7% | 809 |
| 4pm–5pm | 84.0% | 0.0% | 125 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on FAI to SEA
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) | 91.3% | +7.4 pts | 0.0% | 92 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.8% | -13.1 pts | 3.8% | 210 |
| Summer peak (Jun 15 - Aug 15) | 85.4% | +1.5 pts | 1.2% | 942 |
| All other days | 83.9% | — | 0.6% | 3,429 |
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).