Tampa (TPA) to Seattle (SEA): On-Time Performance
Data through July 2026
When you fly TPA to SEA matters as much as anything else about the booking: the route swung from 88% on-time in November 2025 to just 60% in May 2025. Across the full period the route averages 73% on-time against a national 78%. Morning departures also hold up better than evening ones (80% vs 60%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 2.7
- last 12 months
- Duration
- 6h 13m
- scheduled
- Distance
- 2,520 mi
Best airline from TPA to SEA
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 85% | 11 min | 1.1% | 756 |
| Alaska Airlines | 66% | 18 min | 1.4% | 1,322 |
Monthly on-time trend
Best time to fly from TPA to SEA
Aim for departures around 8 a.m. (86% on-time); avoid 6 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 18 min |
| Tuesday | 75% | 11 min |
| Wednesdaybest | 77% | 10 min |
| Thursday | 71% | 17 min |
| Friday | 73% | 16 min |
| Saturday | 76% | 17 min |
| Sunday | 71% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft33%
- Airline operations35%
- National airspace system28%
- Weather3%
- Security1%
Frequently asked questions
- How often are flights from TPA to SEA delayed?
- 27% of TPA–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 16 minutes.
- Which airline is most reliable from TPA to SEA?
- Delta Air Lines has the best on-time record on this route at 85%, based on 756 flights. 2 airlines flew TPA–SEA frequently enough to compare in this period.
- What is the best time of day to fly from TPA to SEA?
- Departures around 8 a.m. have the best record (86% on-time), while departures around 6 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TPA to SEA?
- The scheduled TPA–SEA flight time averages 6h 13m over 2,520 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are TPA to SEA flights cancelled?
- 1.3% 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 TPA to SEA?
- May 2025 was the roughest month in this dataset, with only 60% of arrivals on time. The best was November 2025 at 88%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 2,078 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.