Washington (IAD) to Tampa (TPA): On-Time Performance
Data through May 2026
Washington (IAD) to Tampa (TPA) effectively runs on two schedules. In October 2024, 96% of arrivals were on time; in June 2025 that fell to 61% — a 36-point seasonal swing. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 68%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 3.9
- last 12 months
- Duration
- 2h 31m
- scheduled
- Distance
- 811 mi
Best airline from IAD to TPA
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 81% | 14 min | 1.0% | 2,412 |
| Frontier Airlines | 67% | 25 min | 4.4% | 319 |
Monthly on-time trend
Best time to fly from IAD to TPA
Aim for departures around 9 a.m. (92% on-time); avoid 6 p.m. departures (62%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 19 min |
| Tuesdaybest | 87% | 8 min |
| Wednesday | 85% | 10 min |
| Thursday | 78% | 16 min |
| Friday | 76% | 17 min |
| Saturday | 82% | 13 min |
| Sunday | 75% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations18%
- National airspace system35%
- Weather6%
Frequently asked questions
- How often are flights from IAD to TPA delayed?
- 20% of IAD–TPA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from IAD to TPA?
- United Airlines has the best on-time record on this route at 81%, based on 2,412 flights. 2 airlines flew IAD–TPA frequently enough to compare in this period.
- What is the best time of day to fly from IAD to TPA?
- Departures around 9 a.m. have the best record (92% on-time), while departures around 6 p.m. have the worst (62%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAD to TPA?
- The scheduled IAD–TPA flight time averages 2h 31m over 811 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are IAD to TPA flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from IAD to TPA?
- June 2025 was the roughest month in this dataset, with only 61% of arrivals on time. The best was October 2024 at 96%. If your dates are flexible, that 36-point gap is worth planning around.
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Based on 2,731 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.