Denver International Airport Guide: Terminals, Lounges, and Getting Around

Denver International Airport lies 25 miles from downtown Denver, connected to the metro area via Peña Boulevard. The airport has one central terminal, three satellite concourses, and a free underground train connecting them. That setup works well once you understand it, but most of the friction passengers run into comes from not knowing where their gate is or how the Level 5 ground transportation process works.

This Denver airport guide walks through the concourse layout and underground train, then covers security, lounges, restaurants, long layovers, and the full arrivals process.

Which Gate Area Is Yours?

DEN is bigger than it looks from the outside. The Jeppesen Terminal handles check-in on Level 6, with security on the same floor and baggage claim on Level 5. Some airlines have shifted to temporary counters on Level 5 during construction.

The terminals map shows current gate positions. Each one serves different airlines, so knowing where you are saves time at the train. Assignments do shift during construction, so your boarding pass and the airline directory are the final word.

• Concourse A: Frontier, American Airlines, JetBlue, and several international carriers including Air Canada, Aeromexico, Air France, and Aer Lingus. Alaska Airlines relocates here from Concourse C during 2026. Concourse A also contains DEN’s international gates and customs facilities.
• Concourse B: Primarily United Airlines. The largest of the three.
• Concourse C: Southwest Airlines, Delta Air Lines, and selected other carriers.

The Denver Airport Underground Train

The Automated Guideway Transit System (AGTS) is a free underground connection linking the Jeppesen Terminal to all three. Trains come roughly every two minutes. The longest trip, from the terminal to Concourse C, takes about six minutes.

One exception worth knowing: Concourse A also connects to the Jeppesen Terminal via a pedestrian bridge on Level 6. If your gate is in Concourse A, the bridge is a great alternative to the train, though the faster choice depends on your specific gate location.

How to Get Through Denver Airport Security Faster

Two checkpoints operate on Level 6: East Security and West Security. Both give access to all three gate areas. West Security runs later, closing around 1 a.m., while East Security closes at 8 p.m., so late-night departures should use the West side.

If you fly frequently enough to justify enrollment, three programs can cut your time at the checkpoint significantly:

• TSA PreCheck at Denver airport. Dedicated lanes from 4 a.m. to 8:45 p.m. No removing shoes or laptops at the checkpoint.
• CLEAR. Biometric identity verification at the document check line. Pairs effectively with PreCheck.
• Global Entry ($120, includes PreCheck). The stronger choice for frequent international arrivals.

All three cut time at the checkpoint. The walk to a remote gate is a separate calculation.

Which Denver Airport Lounge Can You Actually Get Into?

DEN has a substantial selection of lounges spread throughout the airport, plus a USO center for eligible military guests. Access depends on airline status, credit card, or a day pass.

Gates A

• Capital One Lounge (near Gate A34). Open to Capital One cardholders and day-pass purchasers (from $90). Recovery chairs, made-to-order food, full bar.
• Delta Sky Club (Level 4, A center core, accessible via the A Bridge). Delta members and qualifying cardholders. Floor-to-ceiling runway views.
• United Club A-West (near Gate A25). Ski chalet design with a two-story fireplace. Day pass $59.
• USO (Level 4). For eligible active-duty military and qualified guests. Check uso.org for current criteria.

Gates B

• United Club B-East (near Gate B44). Brewery aesthetic, local craft beer tasting, shuffleboard.
• United Club B-West (near Gate B32). Ski chalet design with Colorado wildflower murals. Day pass $59. Hours have been inconsistent, so worth checking directly.
• United Club Fly (near Gate B60). Grab-and-go for members only. Day passes not accepted.

Gates C

• Centurion Lounge (near Gate C46). Amex Platinum and Centurion cardholders. 14,000 sq ft, chef-driven menu, Colorado craft beers on tap.
• American Admirals Club (near Gate C32). AA members and eligible premium travelers. Day pass $79.

The Best Restaurants at Denver Airport, by Gate Area

DEN has an unusually broad dining selection, with many concepts adapted from Denver restaurants rather than generic airport chains. The airport has added a lot of new spots throughout 2025 and 2026, so the dining directory is worth a quick look on the day you fly.

Gates A

• Mercantile Dining & Provision. James Beard Award-winning concept. One of the strongest sit-down options in the airport.
• Fat Sully’s Pizza. Denver-born pizza chain’s first airport location, opened April 2026.
• The Bagel Deli (near Gate A38). A Denver institution since 1967, serving classic New York bagels.

Gates B

• Elway’s (center core). John Elway’s steakhouse. Consistent and popular with corporate travelers.
• Snooze (mezzanine). Denver’s well-known breakfast spot. Eggs Benedict, boozy brunch cocktails, pineapple upside-down pancakes.
• Steve’s Snappin’ Dogs (Gate B24). Creative hot dogs with a full bar.

Gates C

• Root Down. Locally sourced comfort food from Justin Cucci’s restaurant group. A DEN anchor since 2013.
• Great Divide Brewing (near Gate C32). A Denver brewery with a full tap list at its airport location.
• Little Man Ice Cream (near Gate C27). The iconic Denver creamery’s airport outpost.

What to Do at Denver Airport for 5 Hours

A long layover at DEN has more options than most airports of this size. A few things that are actually worth your time:

• Outdoor decks: Three locations with firepits, seating, and pet relief areas, usually open between 6 a.m. and 10 p.m.
• Airport art: Over 30 permanent installations throughout the terminal. Start at the Peña Blvd entrance with the Blue Mustang (Blucifer). The fiberglass horse with red eyes is by sculptor Luis Jiménez. Continue inside through the Jeppesen Terminal murals.
• Canine Airport Therapy Squad: Trained therapy dogs make regular circuits through the terminal.

How the Denver Airport Arrivals Process Works

After you land, make your way down to Level 5 of the Jeppesen Terminal. That’s where baggage claim and all the ground transportation options are. Friends and family picking you up have to wait on Level 4, just one floor down.

• Rideshare: Walk to Island 5 after collecting bags. West side: doors 504, 506, 510, 512. East side: doors 505, 507, 511, 513. Request your car only once you reach the island. Rates run higher during ski season and busy periods, so booking a flat-rate car in advance is worth considering.
• RTD A Line: A $10 Airport Day Pass covers the trip to Union Station and any additional RTD travel that day. Trains run every 15 minutes during peak hours and less frequently outside them. The line ends at Union Station, where mountain-bound passengers will need to pick up a separate connection.
• Taxis and shuttles: Level 5 service islands. Shared shuttles fill up and make multiple stops, so departure times aren’t fixed.
• Private car service: Mountain-bound travelers can book a DEN pickup service that meets them inside after baggage claim. It bypasses the rideshare queue and covers the resort transfer from DEN directly.

How Early Should You Leave for Denver Airport?

Peña Boulevard is the sole final funnel into DEN. Toll routes like E-470 let you bypass I-70, but all vehicle traffic ultimately converges onto Peña. A single incident or heavy volume can back up every vehicle heading to the airport at the same time.

DEN recommends arriving at least 2 hours before boarding time for domestic flights. International flights usually need more buffer, so checking with your airline is the safest option. Add your drive to the airport on top of that, and budget extra time during ski season, holidays, or any period of heavy traffic. Sunday afternoons during ski season and busy holiday periods can be especially unpredictable. Once you’re through the door, though, DEN is one of the more enjoyable airports to spend time in; the hard part is just getting there on time.