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1,304 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 4 in 5.

Best time to leave 9–10 am 93% arrive on time from IAD
Best single flight UA 683 IAD 09:00 → TPA 11:32 · 91% on time Avoid UA 1140 IAD 18:00 → TPA 20:39 · 75% 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
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IAD
93
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87
79
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80
% 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

Pick an hour to see this route’s flights leaving then.

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 1,124 84% 0.4% 64 min
Frontier 180 83% 3.3% 73 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 683 IAD 09:00 TPA 11:32 91%
UA 2277 IAD 12:49 TPA 15:15 86%
F9 2953 IAD 12:32 TPA 15:08 82%
UA 1140 IAD 18:00 TPA 20:39 75%

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 IAD TPA 2h 34m 84% 0.4% 1,124 Flying now
Frontier IAD TPA 2h 41m 83% 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