IAH (Houston) to DFW (Dallas) flights arrive on time 73% of the time. The most reliable airline on this route is Spirit Airlines at 87%. The average delay is 99 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated April 2026.IAH → DFW
IAH (Houston) to DFW (Dallas)
IAH → DFW on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is delayed fairly often. About 73% 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 87% on time vs Frontier Airlines at 55%.
Airline Comparison
Spirit Airlines leads at 87% on time; Frontier Airlines trails at 55%.
Accurate?
Good to know
Departing from IAH
80% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. IAH has long runway queues.
TSA is currently ~9 min. Best time: 4 AM (about 5 min).
Arriving at DFW
77% on timeWhen flights into DFW are late, the average delay is 80 minutes. Build buffer if you have ground plans.
If connecting at DFW: TSA is ~20 min right now. Allow at least 60 minutes for a domestic connection.
DFW has a 2.5% cancellation rate — keep the airline app handy for rebooking.
Flight cancelled or delayed?
Check what Spirit Airlines owes you — refund rights, action plan, complaint email. Free.
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Data last updated April 2026. Source: Bureau of Transportation Statistics.