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1,579 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 77%.

Best time to leave 7–8 am 95% arrive on time from IAH
Best single flight UA 1312 IAH 18:10 → TPA 21:29 · 77% on time Avoid UA 1501 IAH 12:50 → TPA 16:12 · 74% 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).

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IAH
% 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 IAH 2–3 pm: 2Close ×
UA 2812 IAH 14:34 TPA 17:55 2h 21m 32 81% 0.0% 48 min
UA 251 IAH 14:34 TPA 17:55 2h 21m 30 73% 0.0% 89 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 1,349 84% 0.4% 61 min
Spirit 114 – 0.0% 62 min
Frontier 116 – 2.6% 132 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 1312 IAH 18:10 TPA 21:29 77%
UA 1501 IAH 12:50 TPA 16:12 74%
All 5 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 IAH TPA 2h 17m 84% 0.4% 1,349 Flying now
Spirit IAH TPA 2h 10m 76% 0.0% 114 Not flying now
Frontier IAH TPA 2h 17m 76% 2.6% 116 Not 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