Why flights get delayed at DEN
Afternoon thunderstorms
Summer storms build over the Front Range most afternoons and can cut the arrival rate sharply for an hour or two.
Snow and de-icing
Denver stays open in snow more often than not, but de-icing queues add time to every departure.
High winds
Strong winds off the mountains can limit which runways are usable and cause turbulence-related spacing on arrival.
Flying through DEN soon? How to prepare
- Time it well.
- Know your airline's commitments. Check what your airline has promised for delays and cancellations in our airline policy guides, or see how to check it yourself.
- Line up a backup. Note the next couple of flights on your route and the alternate airports below before you leave home.
- Connecting here? Keep both flights on one ticket and choose a layover with room to spare above the minimum connection time.
The full list is in our pre-trip checklist.
Airlines most affected
Denver is a hub or major base for United Airlines, Southwest Airlines and Frontier Airlines. When the airport slows down, these airlines have the most flights to re-plan, but they also have the most later departures to rebook you onto. What you are offered during a delay depends on the carrier.
Check the live status
- The FAA shows current ground stops and delay programs for DEN at nasstatus.faa.gov.
- Departure boards, terminal and security information are on the official Denver website.
If your flight is delayed or cancelled at DEN
- Find the real cause. Ask the gate agent, then compare it with the FAA status above. The cause decides what the airline owes you: see is it really a weather delay?
- Know your refund right. If the flight is cancelled, or delayed three hours or more (six for international), you can decline to travel and get your money back.
- Line up alternatives first. Look at later flights, other airlines and the alternate airports below before you reach the desk.
- Ask for what the airline has committed to. For delays within its control, that usually means a meal after three hours and a hotel overnight. Here is what to say.
The full walkthrough is in what to do when your flight is delayed.
Alternate airports near DEN
If flights out of Denver are sold out or cancelled, these airports are within a realistic drive. Distances are approximate road miles. See how to switch airports without losing your booking.
| Airport | Code | Distance |
|---|---|---|
| Colorado Springs | COS | about 85 miles |