Historical on-time performance
Tampa to Seattle
2,520 miData through May 2026Source: US DOT · BTS
Flights on TPA–SEA arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 919 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time87%Medianon timep9015 minCancel1.0%Flights306
- Alaska AirlinesOn-time66%Medianon timep9050 minCancel0.8%Flights613
Why flights run late
Delay causes
- Airline37%
- Weather4%
- Air traffic (NAS)25%
- Late aircraft33%
- Security1%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline75%
- Weather25%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 8 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly TPA → SEA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 78% on time.
- Mornings78% on time · p90 30 min · 1,878 flights
- Evenings61% on time · p90 55 min · 1,197 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 76% on time.
- Wednesdays76% on time · p90 30 min · 428 flights
- Tuesdays75% on time · p90 30 min · 421 flights
- Saturdays73% on time · p90 45 min · 430 flights
- Thursdays71% on time · p90 45 min · 445 flights
- Mondays70% on time · p90 45 min · 449 flights
- Fridays70% on time · p90 40 min · 450 flights
- Sundays67% on time · p90 50 min · 452 flights
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