This page tracks DEN’s daily on-time outlook and explains the airport’s known disruption patterns, with direct lines to the airlines that matter here.
Today’s on-time outlook for DEN
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Prediction from the Amadeus travel network, refreshed daily.
What disrupts DEN
DEN's wide-open site rarely runs out of runway capacity, but afternoon mountain thunderstorms in summer and fast-moving snow in winter drive its delay pattern. United, Southwest and Frontier all run big operations here, so recovery seats usually exist — on someone.
Local knowledge: Denver morning flights are dramatically more reliable than afternoon ones in July and August.
Flight delayed or cancelled at DEN? Do this
- Open your airline’s app and grab any rebooking it offers — then keep improving it with an agent.
- Queue twice: request a phone call-back and stand in the desk line at the same time. The numbers below go straight to the airlines.
- Vouchers aren’t always your best deal — check the cancellation guide and compensation guide first.
- Check your live flight status — our free status tool shows gate and delay data before the boards update.
Major airlines at DEN — direct phone lines
Every number in our directory is the airline’s own published line — free, no middleman.
DEN delay questions
Is DEN delayed right now?
The prediction card at the top of this page refreshes daily from the Amadeus network. For a specific flight, check our live flight status tool — airport-wide averages matter less than your aircraft’s actual rotation. Denver morning flights are dramatically more reliable than afternoon ones in July and August.
Which airlines dominate DEN?
United Airlines, Frontier Airlines and Southwest Airlines carry the largest share of traffic at Denver International. Their direct customer service lines are listed above — during disruption, call the airline, not the airport.
Who do I call about a cancelled flight at DEN?
Always the airline operating your flight — the airport cannot rebook you. For example, United Airlines answers at 1-800-864-8331; every other carrier’s number is in our free directory.