DFW (Dallas) to IAH (Houston) flights arrive on time 72% of the time. The most reliable airline on this route is Spirit Airlines at 82%. The average delay is 79 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated July 2026.DFW → IAH
DFW (Dallas) to IAH (Houston)
DFW → IAH on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is delayed fairly often. About 72% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Spirit Airlines is significantly more reliable on this route at 82% on time vs Frontier Airlines at 65%.
Airline Comparison
Spirit Airlines leads at 82% on time; Frontier Airlines trails at 65%.
Accurate?
Good to know
Departing from DFW
76% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. DFW has long runway queues.
TSA is currently ~24 min. Best time: 4 AM (about 5 min).
DFW cancels 2.5% of flights — higher than average. Have a backup plan.
Arriving at IAH
79% on timeWhen flights into IAH are late, the average delay is 77 minutes. Build buffer if you have ground plans.
If connecting at IAH: TSA is ~10 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 DFW? 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 July 2026. Source: Bureau of Transportation Statistics.