IAH (Houston) to PIT (Pittsburgh) flights arrive on time 80% of the time. The most reliable airline on this route is Spirit Airlines at 88%. The average delay is 67 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated August 2026.IAH → PIT
IAH (Houston) to PIT (Pittsburgh)
IAH → PIT on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 80% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Spirit Airlines edges out United Airlines on this route — 88% vs 79% on time.
Airline Comparison
Spirit Airlines leads at 88% on time; United Airlines trails at 79%.
Accurate?
Good to know
Departing from IAH
79% on timeExpect ~20 min sitting on the taxiway after your gate pushes back. IAH has long runway queues.
TSA is currently ~12 min. Best time: 4 AM (about 5 min).
Arriving at PIT
80% on timeWhen flights into PIT are late, the average delay is 71 minutes. Build buffer if you have ground plans.
If connecting at PIT: TSA is ~12 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Spirit Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of IAH? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated August 2026. Source: Bureau of Transportation Statistics.