DEN (Denver) to LAS (Las Vegas) flights arrive on time 76% of the time. The most reliable airline on this route is United Airlines at 78%. The average delay is 63 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated July 2026.DEN → LAS
DEN (Denver) to LAS (Las Vegas)
DEN → LAS on-time performance by month
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JanFebMarAprMayJunJulAugSepOctNovDec
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This route is on time most of the time. About 76% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Airlines are roughly equal on this route — United Airlines leads slightly at 78% vs Southwest Airlines at 75%.
Airline Comparison
United Airlines leads at 78% on time; Southwest Airlines trails at 75%.
Accurate?
Good to know
Departing from DEN
79% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. DEN has long runway queues.
TSA is currently ~20 min. Best time: 4 AM (about 5 min).
Arriving at LAS
80% on timeWhen flights into LAS are late, the average delay is 64 minutes. Build buffer if you have ground plans.
If connecting at LAS: TSA is ~13 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what United Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of DEN? 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.