Navigating Denver International Airport (DEN) as a United Airlines passenger can feel overwhelming if you aren't familiar with its unique layout. Unlike many traditional airports where every airline shares common spaces, DEN operates around the massive iconic tented Jeppesen Terminal and three distinct satellite concourses: A, B, and C.
If you're flying United, your journey centers almost entirely on Concourse B, which serves as the airline's primary hub. Understanding how to get from the curb to your gate, where to check bags, and how to navigate the underground train system saves you precious time and keeps your trip stress-free.
Jeppesen Terminal: Check-In and Security
Your journey starts at the Jeppesen Terminal, the multi-story main building divided into East and West sides. United check-in counters and baggage drops are located primarily on the West side of Level 6.
If you're checking bags, make sure you drop them off at least 60 minutes before domestic flights or 90 minutes before international departures. As discussed in detailed reports by Lonely Planet, the implications are notable.
Security checkpoints are located on Level 6 (North and South) and Level 5. Because DEN handles high passenger volumes daily, wait times fluctuate drastically.
- Standard Lanes: Often feature long winding queues during morning and evening rush hours.
- TSA PreCheck and CLEAR: Available at multiple checkpoints to speed up screening.
After clearing security, you'll head down to Level 4 to catch the underground train. You cannot walk to Concourse B from the main terminal; the underground Automated Guideway Transit System (AGTS) is mandatory.
Mastering Concourse B: United's Home Base
Concourse B is massive, spanning gates B7 through B94. Because United operates such a heavy schedule here, the concourse is split into main gates and regional commuter gates.
The train ride from the Jeppesen Terminal takes roughly three minutes. Once you step off the train at the Concourse B station, you find yourself right in the middle of the concourse's central hub, packed with restaurants, retail shops, and customer service desks.
Gate Layout and Regional Flights
- Gates B1 through B95+: The lower-numbered gates and higher-numbered gates stretch out across a very long linear concourse. Plan for a 10-to-15-minute brisk walk if your gate is at the far western or eastern end of Concourse B.
- United Express Flights: Many regional flights depart from ground-level boarding areas connected to Concourse B. Pay close attention to your boarding pass, as you might need to take a short escalator down to a secondary boarding lounge rather than a traditional jet bridge.
Lounges and Amenities in Concourse B
Waiting for a flight is much easier when you know where to find food, coffee, and quiet workspaces. United maintains a heavy lounge footprint across Concourse B:
- United Club (Near Gate B32): A spacious lounge offering complimentary snacks, a full bar, and plenty of workspace.
- United Club (Near Gate B44): Another large option centrally located, ideal if your gate happens to be on the eastern half of the concourse.
- United Club Fly (Near Gate B60): A grab-and-go market style lounge tailored for travelers in a rush who want quick snacks and beverages without sitting down for a formal meal.
If you need a bite outside the lounges, local favorites like Root Down offer fresh, sit-down dining options, alongside standard quick-service spots scattered throughout the concourse core.
Connecting Flights and International Arrivals
Making a connection on United at DEN is straightforward because almost all United flights operate within Concourse B. If you arrive from another city and need to catch a connecting United flight, you simply exit your arriving gate, check the monitors for your next gate number, and walk. You don't need to clear security again.
International arrivals are an exception. If you fly into Denver on an international United flight, your flight will land at Concourse A (where DEN processes international arrivals). You must clear U.S. Customs and Border Protection, collect your bags, re-check them for your connecting flight, and reclear security at the main terminal before taking the train back out to Concourse B.
Common Mistakes to Avoid
Travelers frequently run into trouble at Denver International Airport due to a few common oversights:
- Heading to the wrong terminal side: Parking or being dropped off on the East side when flying United means a long walk across the entire length of the terminal to reach the West check-in counters.
- Underestimating security lines: Arriving two hours before a domestic flight is often cutting it close during peak holiday seasons or Monday morning rush hours.
- Ignoring gate changes: DEN frequently shifts gate assignments for regional United Express flights. Always refresh the United app before heading to your assigned gate.
Frequently Asked Questions
Can I walk from the main terminal to Concourse B?
No. While you can walk to Concourse A via a pedestrian bridge, Concourse B and Concourse C are only accessible via the underground train system.
Where is the closest United Club in Concourse B?
There are two main United Club locations—one near Gate B32 and another near Gate B44—plus the United Club Fly grab-and-go market near Gate B60.
What should I do if my United Express flight boards from a ground level gate?
Follow the overhead signs toward your gate number and look for the escalators or stairs leading down to the ground-level bus or boarding holding areas. Allow an extra five minutes to reach these spots.
How early should I arrive for a domestic United flight at DEN?
Arriving at least two hours before domestic departures gives you enough time to park or drop off bags, clear security lines, and ride the train to Concourse B.
