Denver International Airport is notorious for its sprawling layout, massive Jeppesen Terminal, and underground train system. If you're trying to find your gate without getting lost in the subterranean tunnels or missing a tight connection, you need a clear strategy. Navigating DIA comes down to understanding the terminal layout, knowing how to read the concourse maps, and timing your security clearance correctly.
The airport layout consists of one central terminal—Jeppesen Terminal—split into East and West sides for check-in and baggage claim, connected via an underground automated underground train to three concourses: Concourse A, Concourse B, and Concourse C. Concourse A can also be reached via a pedestrian bridge directly from Jeppesen Terminal. Knowing which concourse your airline uses before you arrive eliminates guesswork at the curb.
Understanding the Terminal and Concourse Structure
Concourse navigation at DIA requires knowing how the alphabetical system and gate numbers work. Concourse A, Concourse B, and Concourse C run parallel to each other north of the main terminal.
Gates are numbered sequentially within each concourse, starting with low numbers and moving outward. For example, Concourse B houses United Airlines and features gates ranging from B1 through B95, stretching across a lengthy linear concourse.
- Concourse A: Primarily handles international arrivals, United, Frontier, and various international carriers. Accessible via the underground train or the pedestrian bridge.
- Concourse B: The primary hub for United Airlines, spanning the longest footprint with high foot traffic. Accessible exclusively via the underground train system.
- Concourse C: Primarily serves Southwest Airlines and other domestic carriers. Accessible via the underground train system.
Mastering the Underground Train and Pedestrian Bridge
When you clear security, you'll choose between taking the underground train or walking across the pedestrian bridge to Concourse A. The underground train runs every few minutes and connects the Jeppesen Terminal to Concourses A, B, and C.
The train platform can get congested during peak morning and afternoon banking hours. If you're flying out of Concourse A, check the queue times for the pedestrian skybridge. Walking across takes about five to ten minutes, and it offers panoramic views of the airfield while bypassing train crowds entirely.
If you are transferring between concourses, stay airside and take the train. Never exit security to change concourses, as you'll have to re-clear screening checkpoints. The train platform monitors show real-time train arrivals and direction, so pay attention to announcements regarding maintenance or platform changes.
Security Checkpoints and Timing
DIA features multiple security checkpoints: the North Security checkpoint, South Security checkpoint, and the A-Bridge checkpoint. Wait times vary significantly depending on the hour and TSA PreCheck availability.
The South Security checkpoint generally handles standard screening and handles heavy volume from United and domestic travelers. The North Security checkpoint handles a mix of airlines and features dedicated lanes for premium travelers and TSA PreCheck.
- Arrive Early: DIA recommends arriving at least two hours before domestic flights and three hours before international departures due to check-in and security line fluctuations.
- Checkpoint Selection: Check airport status boards or Denver International Airport wait time trackers before heading to a specific line.
- Bag Drop Cutoffs: Airlines strictly enforce baggage check cutoff times—usually 45 minutes to 60 minutes before departure.
Navigating Concourses and Finding Amenities
Once you arrive at your concourse, navigating is straightforward because the layout is linear. However, the sheer length of Concourse B means you could walk up to a mile from one end to the other. Moving walkways operate down the center of each concourse to speed up transit.
Look overhead for color-coded signage directing you to restrooms, nursing pods, pet relief areas, and airline lounges. Dining and retail options line the central core of each concourse, while the outer gates tend to be quieter with fewer amenities.
If you have a tight connection and need to move from the far end of Concourse B to Concourse C, budget at least 15 to 20 minutes of brisk walking and train transit time.
Frequently Asked Questions
How do I get between Concourse A, B, and C?
Use the underground automated train system located beneath the center of the Jeppesen Terminal and all three concourses. Trains arrive every few minutes, and the ride between adjacent concourses takes less than a minute.
Can I walk between the terminal and the concourses?
You can walk between the Jeppesen Terminal and Concourse A using the pedestrian skybridge. You cannot walk between the terminal and Concourses B or C, nor can you walk through the underground train tunnels.
Where is baggage claim located?
Baggage claim is located on Level 5 of the Jeppesen Terminal. It is divided into East and West sides. Check your boarding pass or airline app to see whether your flight arrives at the East or West baggage carousel.
What should I do if my gate changes?
Check the digital flight information display screens located throughout every concourse or use your airline's mobile app. Gate changes happen frequently at DIA due to heavy aircraft traffic, so verify your gate number 30 minutes before boarding begins.
