Question 1

How early should I arrive for my flight at DIA?

Accepted Answer

It is highly recommended to arrive at the airport at least two hours before a domestic flight and three hours before an international flight. This allows ample time for the check-in process and potential security delays.

Question 2

Where is the TSA PreCheck line at Denver Airport?

Accepted Answer

TSA PreCheck lanes are located on Level 6 of the Jeppesen Terminal, with entrances available on both the East and West sides. Look for the blue signage near the North end of the terminal.

Question 3

Can I walk to my gate at DIA?

Accepted Answer

You can only walk to Concourse A via the A-Bridge pedestrian walkway. For Concourse B and Concourse C, you must take the automated underground train located after the security checkpoints.

Question 4

What is DEN Reserve and is it free?

Accepted Answer

DEN Reserve is a free service that allows you to schedule a specific time for security screening. It is available at the West Security checkpoint and helps you bypass the standard general screening lines.

Question 5

Which airlines are in Terminal West at DIA?

Accepted Answer

Terminal West primarily hosts United Airlines, American Airlines, and various international carriers such as British Airways, Lufthansa, and Air Canada.

dia check in process

The Complete DIA Check-In Process Explained for 2026 Travelers

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