Frontier Airlines Review & Discount Den Membership
Key facts
- Frontier is an Ultra-Low-Cost Carrier (ULCC).
- Discount Den members get access to exclusive lower fares.
- Baggage fees are dynamic and cheaper when paid early.
- Personal items are free, but carry-on bags cost extra.
- The "Kids Fly Free" program is a Discount Den exclusive.
TL;DR: Frontier Airlines is a leading Ultra-Low-Cost Carrier (ULCC) offering budget-friendly base fares. While the "unbundled" pricing model means paying extra for bags and seats, frequent flyers can unlock significant savings through the Discount Den membership. This review explores the cabin experience, fee structures, and whether the membership math truly adds up for your travel style.
The Ultra-Low-Cost Carrier Model Explained

Frontier Airlines operates on a business model common among Ultra-Low-Cost Carriers (ULCCs): unbundling. This approach, monitored by the Department of Transportation (DOT) for fee transparency, allows the airline to offer some of the lowest base fares in the industry by stripping away amenities traditionally included in "legacy" tickets. When you purchase a standard ticket, you are essentially paying for your seat and a small personal item that must fit under the seat in front of you.
According to the Bureau of Transportation Statistics (BTS), ULCCs like Frontier have contributed to the overall downward pressure on domestic airfares over the last decade. However, for a traveler to truly benefit from these low prices, they must understand the "menu" of add-ons. From carry-on bags to advanced seat assignments and even onboard water, almost everything carries an additional cost. The strategy for savvy travelers is to "pay for what you use," which often results in a lower total cost than a standard economy ticket on a full-service carrier.
The In-Flight Experience: What to Expect
Flying Frontier is a utilitarian experience. The airline utilizes a modern fleet of Airbus A320 family aircraft, often recognizable by the distinctive animals painted on the tail fins. Inside, you will find "slimline" seats. These seats are designed to be lighter and thinner to increase fuel efficiency and maximize passenger capacity. While they do not recline, many passengers find them adequate for the short-to-medium-haul flights that make up the bulk of Frontier’s network.
Legroom (pitch) typically ranges from 28 to 29 inches in standard seating, which is tighter than the 30 to 32 inches found on major carriers. If you require more space, Frontier offers "Stretch" seating at the front of the aircraft, providing up to 5-7 extra inches of legroom. It is important to note that there is no built-in inflight entertainment (IFE) or Wi-Fi available. Travelers are encouraged to download movies or books to their personal devices before heading through TSA security checkpoints.
Understanding the Discount Den Membership
The Discount Den is Frontier’s annual subscription program designed for frequent flyers. For an annual fee (typically involving an initial enrollment fee plus an annual renewal rate), members gain access to the lowest guaranteed fares available on the website. These "Deal Hack" fares are often significantly lower than standard retail prices, sometimes saving a family hundreds of dollars on a single round trip.
One of the most touted benefits of the Discount Den is the "Kids Fly Free" promotion. On select flights and dates, one child under the age of 15 can fly for free for every adult Discount Den member traveling on the same reservation. However, these seats are limited and subject to availability, so booking early is essential. Additionally, the membership covers up to six people on a single reservation, provided the member is one of the passengers.
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Baggage Policies and Fees

Frontier is strict regarding baggage dimensions, a practice that aligns with Federal Aviation Administration (FAA) safety regulations for cabin weight and balance. Every passenger is allowed one personal item (14"H x 18"W x 8"D) for free. Anything larger, including standard carry-on bags destined for the overhead bin, incurs a fee. These fees are dynamic; they are generally lowest when purchased at the time of booking and highest when paid at the airport gate.
| Service/Item | Standard Passenger | Discount Den Member |
|---|---|---|
| Base Fare | Standard Market Rate | Member-Exclusive Lowest Fares |
| Personal Item | Included (14"x18"x8") | Included (14"x18"x8") |
| Carry-on / Checked Bag | Paid (Variable) | Paid (Variable) |
| Kids Fly Free | Not Available | Available (Select Flights) |
| Seat Selection | Paid (Optional) | Paid (Optional) |
To avoid "gate fatigue" and high costs, it is highly recommended to use a luggage scale at home. Frontier agents frequently use sizer boxes at the gate. If your bag does not fit comfortably without forcing it, you may be charged a premium gate fee, which can often exceed the price of the flight itself.
Frontier Miles: The Loyalty Program
In recent years, Frontier revamped its loyalty program, "Frontier Miles," to be more rewarding for frequent travelers. Unlike some airlines that reward based on ticket price, Frontier moved toward a model that rewards miles flown and dollars spent on add-ons. This allows even budget-conscious travelers to accrue status faster.
Higher tiers of status (Silver, Gold, Platinum, Diamond) offer perks that negate many of the typical ULCC frustrations. For instance, reaching Elite status can grant you free carry-on bags, priority boarding, and free seat assignments. For the consistent Frontier flyer, combining the Discount Den with Elite status creates a travel experience that rivals the "big three" airlines at a fraction of the cost.
Is Frontier and the Discount Den Right for You?
Ultimately, Frontier is a tool. It is an excellent choice for the "backpack traveler" who can fit everything into a personal item or the family that is willing to trade onboard snacks for a cheaper vacation. The Discount Den is almost always worth the investment if you plan to fly Frontier at least twice in a twelve-month period, or if you are booking a trip for a large group.
Before booking, always calculate the "total cost of travel." Add your base fare, bag fees, and seat selection costs, then compare them to the standard economy price of a legacy carrier. If Frontier remains lower—which it typically does—you’ve found a winning deal. Just remember to bring your own water and download your entertainment before you leave for the airport!
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Frequently asked questions
- Is the Frontier Discount Den worth it for a single trip?
- If you fly Frontier at least twice a year, or if you are booking for a group of 3 or more people once, the savings on fares typically exceed the annual membership cost.
- Does Frontier have Wi-Fi or movies on board?
- No, Frontier does not offer complimentary Wi-Fi or streaming entertainment. Passengers should download content to their devices before boarding. Call 1 (815) 473-8090 for phone-only fares
- What are the dimensions for a Frontier personal item?
- A personal item must be 14"H x 18"W x 8"D or smaller. It must fit under the seat in front of you. If it requires the overhead bin, you must pay for a carry-on bag.
- How does the Kids Fly Free program work?
- Select flights (usually Tuesdays and Wednesdays) allow one child under 15 to fly free per adult Discount Den member. Look for the "Kids Fly Free" logo during the booking process. Call 1 (815) 473-8090 for phone-only fares
- What is Frontier's refund policy?
- Frontier maintains a strict no-refund policy for standard fares. However, you can purchase "The Works" bundle which includes refundability, or 'Flight Flexibility' for one-time changes. Flights canceled by the airline are subject to DOT refund regulations.
- What kind of planes does Frontier fly?
- Frontier operates an all-Airbus fleet, primarily consisting of A320neo, A321neo, and A320ceo aircraft, all of which meet FAA safety standards. Call 1 (815) 473-8090 for phone-only fares