How Strict Is Frontier Carry-on Size? 2025

To board a Frontier Airlines flight without paying extra fees or having your bag checked, you need to have a clear understanding of Frontier Airlines carry-on size rules.

Frontier Airlines allows carry-on bags up to 24″ H x 16″ W x 10″ D (including handles and wheels) and 35 lbs (15 kg) in weight. They are known to be slightly strict, so it’s best to stick to these limits to avoid extra fees.

Here is everything you need to know to avoid last-minute surprises and extra fees.

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How Strict is Frontier with Carry-On Size?

Frontier Airlines is known for being slightly strict about carry-on luggage, mainly because their planes have limited storage space and they make extra money on those carry-on fees.

So to avoid any inconvenience at the gate, make sure your carry-on is within these size and weight limits:

  • Maximum Dimensions: 24″ H x 16″ W x 10″ D (including handles and wheels)
  • Maximum Weight: 35 lbs (15 kg)

If your bag exceeds these limits, you may have to check it in and pay additional fees so it’s best to measure and weigh your luggage beforehand.

What are the Size Limits on Frontier Airlines?

Frontier has size restrictions for both carry-on and checked baggage.

Here’s a breakdown:

– Carry-On Bag: 24” H x 16” W x 10” D (including wheels and handles), up to 35 lbs

– Personal Item: 18” H x 14” W x 8” D, must fit under the seat

– Checked Bag: 62 linear inches (height + width + depth combined), up to 40 lbs

Does Frontier Have a Carry-On Bag Size?

Yes. Frontier has a specific size restriction for carry-on luggage: 24″ H x 16″ W x 10″ D .

If your bag is larger than this, you may be required to check it in and pay additional fees.

Does Frontier Have a Weight Restriction?

Frontier does not impose strict weight limits on carry-on luggage as long as you can lift it into the overhead bin without assistance.

For checked bags, the weight limit is 40 lbs . Bags exceeding this limit will incur overweight fees.

What Can You Bring Onboard?

Frontier allows passengers to bring:

  • One personal item (free of charge) : Examples include a small backpack, purse, or laptop bag. It must fit under the seat in front of you.
  • One carry-on bag  (for a fee) : This could be a small suitcase, duffel bag, or larger backpack, as long as it meets the size restrictions.

If you want to save money, pay for your carry-on bag online in advance fees are higher at the airport.

Frontier Carry-On Suitcase Size Chart

Baggage TypeSize LimitWeight Limit
Personal Item18” H x 14” W x 8” DNo weight limit
Carry-On Bag24” H x 16” W x 10” D35 lbs
Checked Bag62 linear inches (H+W+D)40 lbs

Frontier’s Carry-On Liquids Policy

Bringing liquids? Make sure they follow  TSA 3-1-1 rule :

  • Each container must be  3.4 oz (100 ml) or less 
  • All liquids (gels, pasts and aerosols )must fit in a  single quart sized., clear plastic bag 
  • Remove your bagie from your carry-on during security screening

Where to Store Your Carry-On Bag

Carry-on bag: Goes in the overhead bin.

Personal item: Stays under the seat in front of you (unless you’re in an emergency exit row, in which case it must go in the overhead bin).

Does Frontier Charge for Carry-On Bags?

Yes.

Frontier is a budget airline, which means they charge extra for carry-on bags.

The fee varies but typically starts around $30 if paid online in advance.

If you wait until you’re at the airport or gate, expect to pay much more.

Always check your bag size before heading to the airport to avoid surprise fees.

What If My Carry-On is Slightly Over the Limit?

If your bag is just a little too big, you might get away with it, especially if it’s a soft-sided bag that can be squeezed into the sizer.

Frontier agents are usually strict, so if your bag is clearly oversized, you’ll likely have to check it in and pay extra fees.

If you have a very large bag, it’s safer (and often cheaper) to check it in ahead of time rather than risk paying an oversized baggage fee at the gate.

Checked Bag Weight Limit on Frontier

For checked baggage, Frontier allows a  maximum weight of 40 lbs per bag. If your bag exceeds this weight, you will need to pay additional overweight fees.

Overweight bag Fee (41-50 lbs): Additional charge

Excess Weight Fee (51-100 lbs): Higher charge, and may need to be shipped separately

To skip extra fees, weigh your checked bag before heading to the airport.

Frontier Carry-On Restrictions

Just like any other airline Frontier has specific rules about what you can and cannot bring in your carry-on.

Prohibited items include:

  • Aerosol insecticides
  • Large containers of liquids (over 3.4 oz)
  • Firearms & ammunition –  Flammable items

If you’re unsure about a specific item, you can find more on this what you can bring section page.

frontier airlines  airplane
Image Courtesy of Frontier Airlines

Best Carry-On Bags for Frontier Flights

For the smoothest travel experience, choose a carry-on bag that meets Frontier’s size requirements.

Some great options include:

  • Samsonite Winfield 2: A lightweight, durable carry-on that fits most airline regulations
  • Travelpro Maxlite 5: A soft-sided option that’s flexible and easy to store
  • Amazon Basics Hardside Spinner: An affordable, reliable carry-on option

Final Thoughts

Frontier Airlines can be strict about carry-on size, so it’s always best to pack smart and stay within the limits.

Choosing the right bag and paying for your luggage in advance can save you money and stress at the airport.

Safe travels and happy flying.

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