DEN · Denver · Terminal Concourse B
United Airlines Check-in at Denver International Airport
United Airlines departs from Terminal Concourse B at Denver International Airport. Online check-in opens 24h before departure.
United Airlines check-in rules at DEN
Step-by-step at Denver International Airport
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Check in online
Open the United Airlines app or website 24 hours before departure. Save the boarding pass to your phone wallet.
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Arrive at Terminal Concourse B
United Airlines flights at DEN depart only from Terminal Concourse B. Allow 120 minutes from arrival to gate.
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Drop off bags at Main Terminal main hall
Bag-drop 3 hours before departure, closes 45 minutes before departure. Self-service kiosks available.
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Clear security
Submit your wait time on the airport page above to help others. Standard liquids rule: 100 ml in a single transparent bag.
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Walk to gate Concourse B (United-exclusive)
Allow 15–25 minutes (underground train required) from security to your gate. Boarding starts 30 minutes before departure; gate closes 15 minutes before.
Boarding United Airlines at DEN
Terminal Concourse B notes
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Typical gates
United Airlines flights typically depart from gates Concourse B (United-exclusive).
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Walk time
Expect 15–25 minutes (underground train required) from security to the furthest gate.
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Eat & shop
Concourse B has Colorado + American food (Boulder Beer, Smashburger, Modern Market), local craft brewery, duty-free.
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Lounges
United Club B + Polaris Lounge (long-haul). Multiple locations across Concourse B.
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Family / accessibility
Family priority lane. Stroller drop at gate. United free child meal pre-order on long-haul.
Known issues at DEN with United Airlines
DEN altitude affects baggage weight limits
Problem: Denver's elevation (1,600 m) affects aircraft performance — some flights have hot-day weight restrictions in summer.
Solution: Pack within standard limits. United may offer voluntary bumps in extreme heat. Buffer 60 min for peak summer.
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