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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
10
11
12
13
14
15
16
17
18
19
20
21
22
IAD
93
95
87
79
78
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
Tampa flights leaving IAD 6–7 pm: 1Close ×
UA 1140 IAD 18:00 TPA 20:39 2h 39m 348 75% 0.6% 66 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 1,124 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