Frontier Airlines maintains its primary hub at Denver International Airport (DEN), the city where the airline was founded. Navigating a massive airport like DEN can be daunting, but for Frontier passengers, the process follows a very specific layout. If you are flying with Frontier, you will navigate between the Jeppesen Terminal for check-in and Concourse A for your flight.

Quick Guide to Frontier at DEN

  • Check-in & Baggage Drop: Jeppesen Terminal, Level 6, East Side.
  • Security Checkpoints: North Security (recommended), South Security, or the Bridge Security.
  • Gate Location: All Frontier flights depart from and arrive at Concourse A.
  • Baggage Claim: Jeppesen Terminal, Level 5, East Side.

The Check-in Process at Jeppesen Terminal

Your journey begins at the Jeppesen Terminal, famous for its iconic white fabric roof designed to mimic the snow-capped peaks of the Rocky Mountains. Denver International Airport is divided into East and West sides. For Frontier Airlines, you must head to the East Side.

Locating Frontier Counters

Frontier’s check-in kiosks and full-service counters are situated on Level 6 (Ticketing/Check-in). Most passengers arriving by car or shuttle will be dropped off directly on Level 6. Look for the Frontier signage near the center-to-north section of the East terminal.

Frontier is a digital-first, low-cost carrier. To avoid long lines and potential fees, it is highly recommended to check in via the Frontier mobile app or website 24 hours before your flight. If you have bags to check, you can use the self-service kiosks to print your luggage tags before heading to the baggage drop-off line.

Baggage Policies at the Counter

In our experience, Frontier is strict about baggage dimensions. At the Denver terminal, you will see many metal "sizers" near the check-in area. Ensure your personal item fits completely within the 14"H x 18"W x 8"D dimensions. If you are checking a bag, be aware that the weight limit is typically 40 lbs, which is lower than the 50 lbs standard of many legacy carriers.

Navigating Security Checkpoints

Denver International Airport has three main security checkpoints. Depending on the time of day and your TSA PreCheck status, your choice of checkpoint can significantly impact your wait time.

North Security Checkpoint

Located on Level 5 of the Jeppesen Terminal (East Side), this is often the most convenient checkpoint for Frontier passengers. It frequently offers TSA PreCheck and Clear lanes.

Bridge Security Checkpoint

This is a hidden gem for Frontier travelers. Located on Level 6 (the same level as Frontier check-in), this checkpoint leads directly to the A-Bridge. However, it typically has limited hours and fewer lanes than the North or South checkpoints. If it is open, it is the most direct path to Concourse A.

South Security Checkpoint

Located on the opposite end of Level 5, this checkpoint is also an option, though it is further from the Frontier check-in area. It is open 24/7 and often handles the overflow during peak morning rushes.

How to Get to Concourse A

Once you have cleared security, you need to reach Concourse A. Frontier occupies a large portion of this concourse. You have two primary methods of transportation.

The A-Bridge (Pedestrian Walkway)

One of the unique features of Denver International Airport is the pedestrian bridge connecting the Jeppesen Terminal to Concourse A.

  • The Experience: Walking across the bridge offers a panoramic view of the airfield. In fact, it is high enough for taxiing planes to pass underneath you.
  • Time: It takes about 5 to 10 minutes to walk across the bridge.
  • Why Choose This? If the underground train is crowded or if you prefer some exercise before a long flight, the bridge is the best option. It also bypasses the train station entirely if you use the Bridge Security checkpoint.

The Underground Train (AGTS)

The Automated Guideway Transit System (AGTS) connects the main terminal to Concourses A, B, and C.

  • The Route: After passing through North or South security, follow the signs downstairs to the train station. Concourse A is the very first stop (approximately a 1-minute ride).
  • The Experience: The train is fast and efficient, though it can get extremely crowded during peak hours (6:00 AM – 9:00 AM). Listen for the iconic "jingles" and the automated voice reminding you to "hold on please."

The Concourse A Experience

Concourse A serves as Frontier’s primary operational hub. The concourse is divided into various gate areas. While Frontier uses many gates, they are predominantly clustered on the East wing of Concourse A.

Ground Boarding Gates

A notable feature of flying Frontier out of Denver is the use of "ground boarding" for certain flights. This often occurs at gates in the A60-A80 range (often referred to as the regional or commuter wing).

  • What to Expect: Instead of walking through a jet bridge directly onto the plane, you may walk down a ramp to the tarmac and board the aircraft via stairs.
  • Pro-Tip: If you have mobility issues, notify the gate agent immediately, as they will arrange for an elevator or a lift to get you onto the aircraft. Also, be prepared for the Colorado weather; if it’s snowing or windy, you will feel it during those few moments on the tarmac.

Dining and Shopping in Concourse A

If you have a layover or arrive early, Concourse A has some of the best food options in the airport. Frontier’s gates are within walking distance of several highly-rated spots:

  • Denver Central Market: A food hall-style area featuring local favorites like Vero Italian and Culture Meat & Cheese.
  • Snarf’s Sandwiches: A local Denver staple for toasted subs.
  • Breckenridge Brewery: Perfect for a local craft beer before your flight.
  • Modern Market Eatery: A great choice for healthy salads and grain bowls.

For shopping, you will find several Hudson News stands for snacks, as well as local souvenir shops like "Colorado Expressions."

Frontier Arrival and Baggage Claim

If Denver is your final destination, your Frontier flight will land at Concourse A.

Exiting the Concourse

Upon deplaning, follow the signs for "Baggage Claim" and "Ground Transportation." You can either take the underground train back to the Jeppesen Terminal (one stop) or walk back across the A-Bridge. Both will lead you to the main terminal.

Claiming Your Bags

Frontier baggage claim is located in the Jeppesen Terminal, Level 5, East Side.

  • Check the digital monitors near the train exit to find your specific carousel number.
  • The carousels for Frontier are usually numbered in the 10-15 range on the East Side.

Ground Transportation from the Terminal

Once you have your bags, Level 5 is also the hub for ground transportation:

  • Ride Shares (Uber/Lyft): Follow the signs to Level 5, Island 5. Note that pickup is on either the East or West side depending on where you exited.
  • The A-Line Train: If you are heading to downtown Denver, follow signs to the Denver Airport Station. The train leaves every 15 minutes and takes you directly to Union Station.
  • Parking Shuttles: Located on Level 5, Island 3.

Essential Tips for Frontier Travelers at DEN

1. Arrive Early

Despite being a hub, DEN is notoriously busy. Frontier recommends arriving at least 2 hours before domestic departures. If you are checking bags, the cutoff is exactly 60 minutes before departure—Frontier is very strict about this rule.

2. Download the App

Since Frontier frequently updates gate assignments, the mobile app is your best friend. Concourse A is large, and a gate change from A28 to A64 is a significant walk.

3. Power Up

While many seating areas in Concourse A have been updated with USB ports and outlets, the older sections of the concourse (especially near the ground boarding gates) may have fewer charging stations. Carry a portable power bank just in case.

4. Understand the Zones

Frontier boards by zones. Zone 1 is for those who purchased carry-on bags or "The Works" bundle. If you are traveling with just a personal item, you will likely be in Zone 3 or 4. Boarding usually begins 45 minutes before departure and ends 15 minutes before takeoff.

Frequently Asked Questions (FAQ)

Which terminal does Frontier use at Denver International Airport?

Frontier uses the Jeppesen Terminal for check-in and baggage claim (East Side) and Concourse A for all arrivals and departures.

Can I walk to my Frontier gate at DEN?

Yes, you can walk from the main terminal to Concourse A via the A-Bridge. It is the only concourse at DEN that is accessible by foot from the Jeppesen Terminal.

What should I do if I miss my Frontier flight at DEN?

Head to the Frontier customer service desk located in Concourse A near the center core or at the check-in counters on Level 6. Because Frontier is a low-cost carrier with limited daily flights to certain destinations, be prepared for the possibility of being rebooked on a flight the following day.

Is there a lounge for Frontier passengers in Concourse A?

Frontier does not operate its own lounge. However, Concourse A hosts the American Airlines Admirals Club, the Delta Sky Club, and the USO Lounge for military members. Some credit card holders may also access the Capital One Lounge located near the entrance to the A-Bridge.

How do I find the Frontier baggage claim?

After landing in Concourse A, take the train or walk to the Jeppesen Terminal. Proceed to Level 5, East Side. Look for the carousels assigned to Frontier Airlines.

Summary

Navigating the Frontier Airlines terminal at Denver International Airport is a straightforward process once you understand the "East Side" and "Concourse A" connection. By checking in online, arriving at least two hours early, and choosing between the scenic A-Bridge or the efficient train, you can ensure a smooth start to your journey. Remember that while Frontier offers budget-friendly fares, their operations at DEN are massive, so staying informed via the app is the best way to handle the Mile High City’s busiest travel hub.