Santa Ana (SNA) to Seattle (SEA): On-Time Performance
Data through July 2026
Santa Ana (SNA) to Seattle (SEA) effectively runs on two schedules. In November 2025, 92% of arrivals were on time; in June 2025 that fell to 69% — a 23-point seasonal swing. Across the full period the route averages 84% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 79%), which matters most in the rough months.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 11
- last 12 months
- Duration
- 2h 57m
- scheduled
- Distance
- 978 mi
Best airline from SNA to SEA
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Alaska Airlinesmost reliable | 86% | 8 min | 1.3% | 5,418 |
| Delta Air Lines | 83% | 15 min | 1.0% | 2,175 |
| SkyWest Airlines | 80% | 12 min | 0.3% | 642 |
Monthly on-time trend
Best time to fly from SNA to SEA
Aim for departures around 9 p.m. (93% on-time); avoid 6 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 10 min |
| Tuesday | 87% | 8 min |
| Wednesdaybest | 89% | 9 min |
| Thursday | 82% | 11 min |
| Friday | 82% | 14 min |
| Saturday | 87% | 10 min |
| Sunday | 82% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations37%
- National airspace system18%
- Weather2%
Frequently asked questions
- How often are flights from SNA to SEA delayed?
- 16% of SNA–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 SNA to SEA?
- Alaska Airlines has the best on-time record on this route at 86%, based on 5,418 flights. 3 airlines flew SNA–SEA frequently enough to compare in this period.
- What is the best time of day to fly from SNA to SEA?
- Departures around 9 p.m. have the best record (93% on-time), while departures around 6 p.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SNA to SEA?
- The scheduled SNA–SEA flight time averages 2h 57m over 978 miles. Actual arrival times vary — flights on this route land 15+ minutes late 16% of the time.
- How often are SNA to SEA flights cancelled?
- 1.1% 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 SNA to SEA?
- June 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was November 2025 at 92%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 8,235 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.