Route on-time record
IAH to TPA: most on-time flights and the best time to fly
Houston (George Bush Intercontinental Airport) to Tampa (Tampa International Airport). 1,710 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was United 1353 at 7:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IAH → TPA
Houston to Tampa: 1,710 nonstop flights a year
On time (12 months)
81%
Cancelled
0.8%
avg delay 17 min
Best time to leave
Before 9 AM
95% on time vs 71% after 9 PM
Most reliable airline
United
83% chance on time
Lowest nonstop fare seen in the next two months: $229 (Frontier 2562 on 2026-11-02). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1353
7:20 AM → 10:35 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 93% of the time (107 flights, Jun 2025 to May 2026).
- Never cancelled in 107 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 71%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 107 flights
Find United 1353 fares Opens this date on Aviasales#2 · United 251
2:34 PM → 5:55 PM2h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 78% of the time (9 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
Limited track record · 9 flights
Find United 251 fares Opens this date on Aviasales#3 · United 1194
2:20 PM → 5:36 PM2h 16m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
- On time (history)
- 67%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 67% of the time (21 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
- 57% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 21 flights
Find United 1194 fares Opens this date on Aviasales#4 · United 1312
6:30 PM → 9:48 PM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.4%
- Avg arrival delay
- 13 min
- Arrived on time 81% of the time (247 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Strong track record · 247 flights
Find United 1312 fares Opens this date on Aviasales#5 · United 1501
12:40 PM → 3:56 PM2h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.6%
- Avg arrival delay
- 14 min
- Arrived on time 77% of the time (325 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside TPA's trouble window: 76% of its 25 ground stops and delay programs started between noon and 6 PM.
Strong track record · 325 flights
Find United 1501 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines83%
1,376 flights · 84% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
375 flights · avg delay 3 min
- 9 AM to noon73%
61 flights · avg delay 11 min
- Noon to 3 PM79%
686 flights · avg delay 14 min
- 3 to 6 PM73%
67 flights · avg delay 17 min
- 6 to 9 PM75%
460 flights · avg delay 24 min
- After 9 PM71%
61 flights · avg delay 92 min
Best day: Tuesday (85%). Worst: Friday (76%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft51%
- Airline (crew, maintenance, boarding)24%
- Air traffic control and airport volume18%
- Severe weather7%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
IAH to TPA questions
- What time of day is best to fly IAH to TPA?
- Before 9 AM: 95% of flights arrived on time, against 71% for departures after 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from IAH to TPA?
- United, with a season-adjusted 83% chance of operating and arriving on time over 1,376 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on IAH to TPA?
- July (64% on time); the best was February (90%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from IAH
- TPA to IAH (return)
- IAH to ORD 75%
- IAH to DFW 75%
- IAH to LAX 83%
- IAH to ATL 77%
- IAH to DEN 81%
- IAH to LGA 72%
- IAH to EWR 74%
- IAH to MIA 78%
- IAH to MCO 81%
- IAH to SFO 79%
- IAH to LAS 82%
- IAH to DCA 75%
Most on-time flights from IAH on every route →
Live status: FAA delays and ground stops