Denver International Airport (DEN) serves Denver, CO. Denver is a United hub and one of Southwest's busiest airports, which gives travelers a wide choice of nonstops across the West and Midwest. Call (800) 490-3234 to check live fares.
DEN at a glance
| Airport code | DEN |
|---|---|
| Serves | Denver, CO |
| Location | 39.86°, -104.67° |
| Standard time zone | Mountain (UTC-7) |
| Airline hubs | United Airlines and Southwest Airlines |
| Nearby airports | Colorado Springs |
About Denver International Airport
Denver is a United hub and one of Southwest's busiest airports, which gives travelers a wide choice of nonstops across the West and Midwest. The airport is about 25 miles from downtown, so plan ground time.
Airlines at DEN
United Airlines and Southwest Airlines have a hub or major base here, which usually means more nonstop options and easier rebooking if a flight is disrupted.
Getting to and from DEN
The A Line train reaches Union Station in about 37 minutes.
Best time to fly
Ski season brings holiday peaks, and spring snowstorms can cause sudden cancellations.
Arrival and security tips
Plan to arrive about two hours before departure, and add time on holiday weekends, early mornings or when you check bags. Bring REAL ID-compliant identification or a passport. Our guide on arrival times covers the details.
Popular flights from and to DEN
Explore our guides for routes involving Denver:
- Atlanta to DenverATL to DEN
- Austin to DenverAUS to DEN
- Baltimore to DenverBWI to DEN
- Chicago to DenverMDW to DEN
- Chicago to DenverORD to DEN
- Cleveland to DenverCLE to DEN
- Denver to BostonDEN to BOS
- Denver to Las VegasDEN to LAS
- Denver to NashvilleDEN to BNA
- Denver to OrlandoDEN to MCO
- Denver to PhoenixDEN to PHX
- Houston to DenverIAH to DEN
- Kansas City to DenverMCI to DEN
- Los Angeles to DenverLAX to DEN
- New Orleans to DenverMSY to DEN
- New York to DenverJFK to DEN
- Newark to DenverEWR to DEN
- San Antonio to DenverSAT to DEN
- San Francisco to DenverSFO to DEN
- Seattle to DenverSEA to DEN
- St. Louis to DenverSTL to DEN
- Washington, D.C. to DenverIAD to DEN
Frequently asked questions about DEN
Which airlines operate at DEN?
United Airlines and Southwest Airlines have a hub or major operation at DEN. Other carriers also serve it, and schedules change by season.
How do I get from DEN to Denver?
The A Line train reaches Union Station in about 37 minutes.
How early should I arrive at DEN?
A common guideline is about two hours before departure, and longer during holiday periods or when you are checking bags. Check your airline's cutoff times.
When is the best time to fly to Denver?
Ski season brings holiday peaks, and spring snowstorms can cause sudden cancellations.
Are there other airports near Denver?
Yes. Options include Colorado Springs. Compare fares and ground transport before choosing.
Last reviewed October 22, 2026. FlighTicketHub provides general information; confirm details with the airline before you travel.