DEN
Denver, US

Denver International Airport

Your complete guide to DEN — terminals, getting into the city, airlines, and insider tips.

Terminals

3 concourses (A, B, C) connected by underground train

Getting to the City

RTD A Line train to Union Station ~37 min ($10.50). Ride-share and taxis at Level 5 (east side).

Top Airlines at DEN

UnitedSouthwestFrontierDeltaAmerican Airlines

Insider Tips

United's second-largest hub. The iconic tent-roof is visible from miles away. Concourse C has the best food. DIA conspiracy theories add entertainment.

Track Flights from DEN

Set your target price and FlightKitten pounces when economy fares from DEN drop below your budget.

Start Tracking — Free TrialAll Flights from Denver

Popular Routes from DEN

DEN→Abu DhabiDEN→AccraDEN→Addis AbabaDEN→AlmatyDEN→Amalfi CoastDEN→AmmanDEN→AmsterdamDEN→Antalya

Destinations at DEN

Denver, United States

More Airport Guides

JFKNew YorkLAXLos AngelesORDChicagoMIAMiamiSFOSan FranciscoBOSBostonSEASeattleATLAtlanta

How do I get from DEN airport to Denver?

RTD A Line train to Union Station ~37 min ($10.50). Ride-share and taxis at Level 5 (east side). FlightKitten tracks cheap economy flights from DEN across 220+ airlines — set your target price and get an email alert when fares drop below your budget.

Which airlines fly from DEN?

Major airlines operating from Denver International Airport include United, Southwest, Frontier, Delta, American Airlines. FlightKitten monitors fares across all carriers simultaneously, scanning twice daily to catch price drops the moment they happen. Each alert includes an AI-powered deal briefing that explains whether the fare is historically unusual and worth booking immediately.