IAD to TPA flight delays & on-time performance
Nonstop flights from Washington Dulles International Airport to Tampa International Airport · 811 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAD or TPA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Washington (IAD) to Tampa (TPA) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.8% were cancelled, and 5% arrived an hour or more late.
- United Airlines was the most punctual airline here (84% on time); Frontier Airlines was the least (82%).
- Departures scheduled around 9am did best (92% on time); around 5pm did worst (70%).
- Tuesday was the most reliable day to fly (92% on time) and Sunday the least (79%).
- The largest source of delay minutes was late-arriving aircraft (36%).
Which airline is most on time from IAD to TPA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 84% | 0.4% | 11 min | 5.2% | 1,124 |
| Frontier Airlines | 82% | 3.3% | 13 min | 6.4% | 180 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am89%192 flights
- 9am92%190 flights
- 12pm86%380 flights
- 2pm85%22 flights
- 5pm70%212 flights
- 6pm77%168 flights
- 10pm86%65 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%1.5% cancelled
- Tuesday92%0.6% cancelled
- Wednesday86%0.6% cancelled
- Thursday86%0.0% cancelled
- Friday80%0.0% cancelled
- Saturday81%0.0% cancelled
- Sunday79%3.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft36%
- Air traffic control & airport congestion36%
- Airline (crew, maintenance, cleaning, fueling)19%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather64%
- Airline (crew, maintenance, cleaning, fueling)36%
- Air traffic control & airport congestion0%
- Security0%
IAD to TPA: common questions
- How often are IAD to TPA flights on time?
- 83% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Washington to Tampa cancelled?
- 0.8% of scheduled flights were cancelled (11 of 1,304).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 63 min behind schedule on average, and 5.3% of flights were an hour or more late.
- How long is taxi time at IAD?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: TPA to IAD — 85% on time
More flights from Washington
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAD → TPA, nonstop flights by US airlines that report to the DOT. How we calculate this.