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1,305 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: almost all depart on time. After 4 pm it’s 4 in 5.

Best time to leave 8–9 am 95% arrive on time from TPA
Best single flight UA 2331 TPA 09:00 → IAD 11:22 · 94% on time Avoid UA 1370 TPA 18:57 → IAD 21:30 · 78% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

8
9
10
11
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15
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TPA
97
94
83
90
77
81
76
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55
Dulles flights leaving TPA 6–7 pm: 1Close ×
UA 1370 TPA 18:57 IAD 21:30 2h 33m 350 78% 0.6% 72 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United 1,125 86% 0.7% 73 min
Frontier 180 85% 3.3% 62 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
UA 2331 TPA 09:00 IAD 11:22 94%
F9 2954 TPA 09:10 IAD 11:47 85%
UA 1370 TPA 18:57 IAD 21:30 78%
All 4 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
United TPA IAD 2h 20m 86% 0.7% 1,125 Flying now
Frontier TPA IAD 2h 36m 85% 3.3% 180 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON