SEA to TPA flight delays
Seattle, WA (SEA) Tampa, FL (TPA) · 2,520 miles
976 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
78.56%
Arrived on time
Within 15 minutes of schedule
0.61%
Cancelled
Share of scheduled flights
48 min
When late, late by
Average across delayed arrivals
11 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In February it ran 35.5 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The route has been getting better. The later months in the record run 12.3 points more punctual than the earlier ones, which usually means a schedule that was too tight has been given more room.
The 2 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
The Seattle to Tampa route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, Alaska Airlines arrived on time most often on SEA to TPA. Delta Air Lines was late most often. Flights ran closest to schedule in February and worst in July.
Every airline on SEA to TPA
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Alaska Airlines | 613 | 79.93% | 0.65% | 43 min | C |
| Delta Air Lines | 363 | 76.26% | 0.55% | 55 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
TPA to SEA Tampa back to Seattle 74.95% on time COther routes from Seattle
Common questions
Are flights from Seattle to Tampa usually delayed?
78.56% of flights on the SEA to TPA route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Seattle to Tampa?
Alaska Airlines, at 79.93% on time across 613 flights. The least punctual on the route was Delta Air Lines at 76.26%.
How often are SEA to TPA flights cancelled?
0.61% of scheduled flights did not operate — about 6 in every thousand. That is in the normal range.
What is the best month to fly Seattle to Tampa?
February, when 90.4% of flights arrived on time. The worst was July at 54.9%.
When SEA to TPA flights are late, how late are they?
About 48 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SEA to TPA during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →