Historical on-time performance
Washington to Tampa
Flights on IAD–TPA arrive on time 80% of the time over the last 12 months.
based on 1,221 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time80%Medianon timep9035 minCancel0.4%Flights1,221
Why flights run late
Delay causes
- Airline20%
- Weather10%
- Air traffic (NAS)28%
- Late aircraft42%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline20%
- Weather80%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 5 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 IAD → TPA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 68% to 87% on time.
- Mornings87% on time · p90 15 min · 1,134 flights
- Middays85% on time · p90 20 min · 1,168 flights
- Overnights75% on time · p90 65 min · 159 flights · limited
- Evenings69% on time · p90 70 min · 1,173 flights
- Afternoons68% on time · p90 65 min · 191 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Tuesdays84% on time · p90 25 min · 514 flights
- Wednesdays83% on time · p90 25 min · 504 flights
- Saturdays82% on time · p90 35 min · 531 flights
- Mondays78% on time · p90 50 min · 565 flights
- Thursdays77% on time · p90 40 min · 574 flights
- Fridays77% on time · p90 55 min · 562 flights
- Sundays75% on time · p90 50 min · 575 flights
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