Spokane (GEG) to Seattle (SEA): On-Time Performance
Data through July 2026
When you fly GEG to SEA matters as much as anything else about the booking: the route swung from 92% on-time in May 2026 to just 71% in February 2025. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (87% vs 79%), which matters most in the rough months.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 14
- last 12 months
- Duration
- 1h 20m
- scheduled
- Distance
- 224 mi
Best airline from GEG to SEA
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 90% | 13 min | 1.6% | 752 |
| SkyWest Airlines | 87% | 9 min | 0.5% | 6,490 |
| Alaska Airlines | 78% | 11 min | 0.7% | 3,561 |
Monthly on-time trend
Best time to fly from GEG to SEA
Aim for departures around 5 a.m. (93% on-time); avoid 6 p.m. departures (63%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 9 min |
| Tuesdaybest | 87% | 9 min |
| Wednesday | 86% | 10 min |
| Thursday | 80% | 14 min |
| Friday | 81% | 11 min |
| Saturday | 86% | 9 min |
| Sunday | 84% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft29%
- Airline operations39%
- National airspace system17%
- Weather15%
Frequently asked questions
- How often are flights from GEG to SEA delayed?
- 16% of GEG–SEA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- Which airline is most reliable from GEG to SEA?
- Delta Air Lines has the best on-time record on this route at 90%, based on 752 flights. 3 airlines flew GEG–SEA frequently enough to compare in this period.
- What is the best time of day to fly from GEG to SEA?
- Departures around 5 a.m. have the best record (93% on-time), while departures around 6 p.m. have the worst (63%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GEG to SEA?
- The scheduled GEG–SEA flight time averages 1h 20m over 224 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are GEG to SEA flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from GEG to SEA?
- February 2025 was the roughest month in this dataset, with only 71% of arrivals on time. The best was May 2026 at 92%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 10,803 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.