If you're flying with Frontier Airlines from Denver, it's essential to know exactly where to go. Denver International Airport (DEN) is a major hub in the western U.S., and with its expansive layout, being informed saves you time and stress.

Frontier Airlines operates out of Concourse A at Denver International Airport. While Denver's airport doesn't use the traditional "Terminal 1, 2, 3" naming system, each concourse functions as a terminal, and Concourse A is effectively the Frontier Denver terminal.

To access Frontier Airlines' Denver terminal, you’ll go through the main terminal—officially known as the Jeppesen Terminal—and take the train (or walk via the pedestrian bridge) to Concourse A. The pedestrian bridge connects directly to the A gates, and it’s the only bridge at the airport where passengers can watch planes pass beneath them!

Frontier Airlines Terminal Denver Airport Details:

• Airline: Frontier Airlines

• Denver Airport Terminal: Concourse A

• Access: Walk via pedestrian bridge or take the underground train

• Services Available: Check-in kiosks, bag drop, security checkpoint, food, shopping, and airline lounges nearby (though Frontier doesn’t have its own lounge)

If you're wondering, "What terminal is Frontier at Denver Airport?"—remember that while the signage says Concourse A, it functions like a terminal for Frontier. So whether you're looking for Frontier Airlines Denver terminal, Denver Airport Frontier terminal, or just need to locate the Frontier terminal Denver, it's all the same: Concourse A.

For travelers departing from or arriving at the Denver Frontier terminal, make sure you arrive early. While the terminal is easy to navigate, security lines can get long during peak hours.

Alaska Airlines Terminal at Los Angeles International Airport (LAX)

Now, if you're heading out of or into Los Angeles International Airport on Alaska Airlines, you'll be flying through a different part of the airport altogether.

What terminal is Alaska Airlines at LAX? That’s one of the most frequently asked questions for travelers flying Alaska to or from LA.

As of 2025, Alaska Airlines operates out of Terminal 6 at LAX. This terminal has been updated in recent years to better serve Alaska's growing number of domestic and international passengers. While Terminal 6 is the main location, some flights may also use gates in Terminal 5 or the Tom Bradley International Terminal (TBIT), especially for international connections or during construction phases.

Alaska Airlines Terminal LAX Details:

• Airline: Alaska Airlines

• LAX Terminal: Terminal 6 (primary), sometimes Terminal 5 or TBIT

• Check-in Counters: Located in Terminal 6

• Security & Gates: After clearing security in Terminal 6, follow signs to the Alaska gates

• Lounges: Alaska Lounge located on the mezzanine level in Terminal 6

So, if you're searching for:

• Alaska Airlines terminal LAX

• LAX Alaska Airlines terminal

• Alaska terminal LAX

• What terminal is Alaska Airlines at LAX

• Terminal for Alaska Airlines at LAX

…they all point to Terminal 6.

What to Expect at Terminal 6

Terminal 6 is one of the more modernized terminals at LAX. It includes updated seating areas with charging stations, multiple dining options including fast food and sit-down restaurants, and retail stores for last-minute shopping.

If you're flying with Alaska Air at LAX, it’s recommended to arrive at least 2 hours early for domestic flights and 3 hours early for international ones, especially during holidays or weekends.

Connecting Flights: Frontier at Denver and Alaska at LAX

Many travelers flying between the West Coast and central U.S. cities find themselves switching between Frontier Airlines at Denver and Alaska Airlines at LAX. Here are some tips if you're making that connection:

1. Frontier Denver Terminal: Go directly to Concourse A from the Jeppesen Terminal via train or bridge.

2. Alaska LAX Terminal: Check your boarding pass to confirm your gate, but generally, head to Terminal 6.

3. Baggage Transfer: If you’re switching airlines, especially from Frontier to Alaska or vice versa, you’ll likely need to re-check your baggage unless the airlines have an interline agreement in place for that route.

4. Allow Time: Give yourself at least 2-3 hours between flights at either airport to account for shuttle times, re-checking baggage, and security.

Summary

If you’ve been wondering what terminal is Frontier at Denver Airport, or searching phrases like Frontier Denver Terminal, Denver Frontier terminal, or Denver Airport Frontier terminal—just remember, Concourse A is your go-to location.

Likewise, if you’ve been asking yourself what terminal is Alaska Airlines at LAX, you’ll want to head to Terminal 6—the official Alaska Airlines LAX terminal. From check-in to boarding, everything Alaska-related happens there unless otherwise noted.

Quick Reference Table

By knowing your terminal ahead of time, you’ll avoid last-minute confusion and breeze through the airport with confidence. Whether you're departing from the Frontier terminal at Denver Airport or landing at the Alaska Airlines terminal at LAX, this guide has you covered.