HOU (Houston) to DEN (Denver) flights arrive on time 80% of the time. The most reliable airline on this route is Southwest Airlines at 81%. The average delay is 58 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated October 2026.HOU → DEN
HOU (Houston) to DEN (Denver)
HOU → DEN 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?
Southwest Airlines edges out Frontier Airlines on this route — 81% vs 70% on time.
Airline Comparison
Southwest Airlines leads at 81% on time; Frontier Airlines trails at 70%.
Accurate?
Good to know
Departing from HOU
80% on timeTSA is currently ~16 min. Best time: 4 AM (about 5 min).
Arriving at DEN
78% on timeWhen flights into DEN are late, the average delay is 68 minutes. Build buffer if you have ground plans.
If connecting at DEN: TSA is ~15 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Southwest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of HOU? 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 October 2026. Source: Bureau of Transportation Statistics.