Booking a Frontier flight and not sure what you can bring? You’re not alone. The Frontier Airlines baggage policy trips up a lot of travelers because, unlike legacy carriers, Frontier charges for almost everything beyond a single personal item. Understanding the rules before you book can save you serious money and a stressful scene at the gate.
This guide breaks down everything you need to know about Frontier’s baggage allowance, fees, size limits, and the smart ways to avoid surprise charges.
How Frontier Airlines Baggage Fees Work
Frontier is an ultra-low-cost carrier, which means the base fare buys you a seat and one free personal item — and that’s it. Frontier is one of the few airlines that currently charges a fee for standard carry-on bags and each checked bag (there are no automatic inclusions).
Two rules matter most here. First, baggage fees increase the longer you wait. With Frontier’s baggage policy, these fees increase with time, so to save the most money you should purchase both your carry-on and checked luggage allowance as early as possible. Second, and this catches many travelers off guard: baggage charges are applied per one-way trip, meaning you’ll be paying double these fees round trip.
In short, buy your bags when you book, and remember every fee you see is for one direction only.
Frontier Personal Item Policy (Free Allowance)
Every passenger gets one free personal item on every fare. This is your only no-cost baggage allowance, so choose your bag carefully.
According to Frontier’s official policy, personal items must be no larger than 14″ H x 18″ W x 8″ D, including handles, wheels, and straps. These include purses, totes, computer bags, briefcases, and kids’ backpacks. Your personal item must fit completely under the seat in front of you.
Be warned that Frontier checks personal item size during boarding, and oversized items are charged on the spot, so test your bag against the sizer dimensions before you fly. If your “free” bag is too big, it instantly becomes a paid carry-on.
Frontier Carry-On Baggage Policy and Size
A carry-on bag is never included in the base Frontier fare — it always costs extra. Here are the dimensions and weight limits straight from the airline.
Carry-on bags can be up to 24″ H x 16″ W x 10″ D and weigh no more than 35 lb. They should fit in the overhead bin or under the seat. Examples include large backpacks, small duffel bags, and small wheeled suitcases.
If your carry-on exceeds 35 pounds, it should be checked in advance to avoid extra fees at the gate. Carry-on bags are not included in the base fare, and you’d need to pay a carry-on baggage fee of anywhere from about $60 to $99 to bring a bag into the cabin to store in the overhead bin. Paying this fee upfront when booking is always cheaper than paying at the airport.
Frontier Checked Baggage Policy and Weight Limit
Checked bags also carry a fee on Frontier, and the airline’s weight limit is stricter than most carriers. The Frontier checked bag size and weight rules are clear-cut.
Per Frontier’s official guidance, checked bags must not exceed 62 linear inches (length + width + depth) and must weigh 40 lb or less. This 40-pound cap is notably lower than the standard 50 pounds most airlines allow, so weigh your suitcase at home.
Checked bag fees are route-dependent and rise the closer you get to departure. Your first bag might cost around $50–$60, while a second bag typically jumps to roughly $75–$95 if you book it online, and waiting until the airport ticket counter could mean $100 or more. Because each additional bag scales upward in price, packing everything into one larger suitcase is almost always cheaper.
Overweight and Oversized Baggage Fees
Go over the size or weight limits and Frontier adds charges on top of your standard bag fee. Oversized or overweight bags incur fees of $75–$100 per bag, per direction of travel.
There are firm upper limits too. Frontier will not accept bags over 110 linear inches (height + width + depth) in size or over 100 pounds in weight. Specialty items have their own fee structures — for example, you can check a bicycle for $75, and antlers for $100.
How to Save on Frontier Baggage Fees with Bundles
The single best way to cut baggage costs is bundling. You can save by purchasing bundles like The WORKS or The PERKS, which include a free carry-on and checked bag. For any trip longer than a couple of nights, a bundle often costs less than buying bags individually.
Frontier elite status also unlocks free baggage. FRONTIER Miles Elite Gold members receive 1 free carry-on bag, Platinum members and their travel companions receive a free carry-on and 1st checked bag, and Diamond Elite members receive a 2nd free checked bag.
Free Baggage Exemptions and Special Items
Not everyone pays for everything. Several groups enjoy waivers under the Frontier baggage policy.
Parents, people with mobility devices, and military service members can all take advantage of free carry-on or checked items. Specifically, parents may bring a car seat for an infant or young toddler at no charge, and strollers are also free but must be checked during the flight. Wheelchairs, scooters, canes, walkers, and crutches are always allowed in the cabin but may be checked if space is limited.
Active-duty U.S. military members receive especially generous allowances, including free carry-on and checked bags with valid ID.
Tips to Avoid Frontier Baggage Charges
Pack smart and you can fly Frontier for next to nothing. Keep these strategies in mind: pay for any bags online when you first book, never at the gate; measure and weigh every bag against Frontier’s exact limits before leaving home; consider a bundle for trips longer than two nights; and if you can fit everything into one compliant personal item, you’ll pay zero in baggage fees.
Final Thoughts on Frontier’s Baggage Policy
Frontier’s baggage rules reward planning. The fares are genuinely cheap, but only if you understand the carry-on size limits, checked bag weight caps, and per-direction fee structure before you book. Measure your bags, pay early, and consider a bundle — and that low headline fare stays low all the way to your destination.
