Navigating Denver International Airport (DEN) can feel overwhelming if you don't know how its unique layout functions. Spanning over 33,000 acres, it's the largest airport in the United States by land area. Yet, its passenger footprint is surprisingly straightforward: one massive central terminal connects to three separate satellite concourses via an underground train system. Understanding how these terminal maps fit together prevents missed connections and long lines.
The airport centers around the iconic tent-roofed Jeppesen Terminal, flanked by the East and West sides for ticketing, check-in, and baggage claim. Unlike multi-terminal airports where you have to take buses between separate buildings, DEN keeps all check-in and security processes under one roof. Once you clear security on Level 6 or Level 5, you'll head down to Level 4 to catch the underground train out to Concourses A, B, and C.
Jeppesen Terminal Layout and Levels
The Jeppesen Terminal is organized vertically across several key levels. Knowing which floor you need before stepping out of a vehicle saves precious minutes.
- Level 6: Passenger drop-off and airline check-in counters. If you're arriving by car or taxi, this is where you'll enter to check bags.
- Level 5: Baggage claim and international arrivals. This level also provides access to ground transportation, hotel shuttles, and passenger pick-up areas outside the doors.
- Level 4: The underground train station level. Once you pass through security, you drop down to Level 4 to board the automated train heading to the concourses. This level also handles curbside passenger pick-up.
- Level 1: The Transit Center. This lower level houses the Regional Transportation District (RTD) A-Line train station connecting downtown Denver, along with regional buses and parking garages.
Concourse Breakdown: A, B, and C
After leaving the main terminal, the underground train moves passengers to three distinct concourses. Each concourse acts as its own island with gates, restaurants, and retail shops.
Concourse A
Concourse A handles all international arrivals and serves major international carriers alongside domestic airlines like Frontier and American Airlines. You can reach Concourse A by taking the underground train, or by walking across the pedestrian bridge directly from the Jeppesen Terminal. This skybridge features moving walkways and clear views of the airfield, making it a great option if you want to avoid the train during peak hours.
Concourse B
Concourse B is the operational hub for United Airlines. It is the busiest concourse in the airport, packed with a wide array of dining options, lounges, and service counters. Concourse B cannot be reached by walking from the main terminal; you must take the underground train. If you have a tight connection on United, keep a close eye on your gate number, as the concourse spans a significant distance.
Concourse C
Concourse C primarily serves Southwest Airlines, alongside other carriers like Alaska Airlines and Spirit Airlines. Like Concourse B, it is only accessible via the underground train system. Recent expansions have added more gates, local Colorado eateries, and modern seating spaces to help accommodate high passenger volume.
Navigating Between Concourses and Walking Rules
A common mistake travelers make is trying to find a walking path between all concourses. Outside the secure area, there are no connecting bridges between Concourses B and C.
If you are transferring flights, you don't need to exit security. Simply hop back on the underground train, which runs every few minutes. The entire train ride from the main terminal to the farthest point in Concourse C takes roughly 10 minutes.
If you prefer walking and your schedule allows, you can walk from the Jeppesen Terminal to Concourse A in about 5 minutes via the pedestrian bridge. However, walking the full length of the concourses themselves can take anywhere from 15 to 25 minutes, so take advantage of the moving walkways when you're in a rush.
Choosing the Right Parking Garage: East vs. West
Denver Airport splits its parking garages, check-in areas, and baggage claims into East and West sides. Picking the correct side before you drive onto Peña Boulevard saves you from walking across the entire terminal structure.
- East Side: Generally serves international airlines, Southwest, Delta, and several regional carriers. Check your airline's specific guidance before arriving.
- West Side: Primarily houses United Airlines and other domestic carriers.
Look at your airline ticket confirmation carefully. Parking garages on both sides offer hourly and daily spaces, but walking from the East garage to a West-side check-in counter adds extra minutes to your walk.
For official updates on gate assignments, security wait times, and interactive maps, consult the Denver International Airport Official Website. If you are looking into alternative parking options nearby with direct terminal shuttles, check out the ParkDIA Information Page.
Common Mistakes to Avoid
- Going to the wrong terminal side: Dropping off passengers on the West side when flying an airline located on the East side forces a long trek across the terminal core.
- Assuming you can walk everywhere: You cannot walk between the main terminal and Concourses B or C—the underground train is mandatory.
- Underestimating security lines: DEN security checkpoints can experience heavy congestion during peak morning and holiday hours. Arrive at least two hours before domestic flights and three hours before international departures.
Frequently Asked Questions
Can I walk from the terminal to Concourse B or C?
No. While you can walk to Concourse A via the pedestrian bridge, Concourses B and C require you to ride the underground train from Level 4.
Where is baggage claim located?
Baggage carousels are located on Level 5 of the Jeppesen Terminal. Make sure to check the overhead screens to see whether your flight's baggage is on the East or West side.
How often does the underground train run?
The automated guideway train runs continuously 24 hours a day, with departures every couple of minutes. The maximum ride time from the main terminal to Concourse C is about 10 minutes.
What is the best way to get to downtown Denver from the airport?
You can take the RTD A-Line commuter train from the Transit Center on Level 1. It runs directly to Denver Union Station in roughly 37 minutes.
