To board a Frontier Airlines flight without paying extra fees or having your bag gate checked, you really need to know just how strict is Frontier Airlines with carry-on size and weight?
Generally; Frontier Airlines allows carry-on bags up to 24″ H x 16″ W x 10″ D / 61 cm H × 41 cm W × 25 cm 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.
This pst covers everything you need to know about Frontier Airlines carry-on limits to avoid any last-minute surprises and extra fees.
Here is what you need to know.
TL;DR
Frontier is fairly strict with carry-on size and weight, especially on full flights.
Carry-On Bag dimensions are 24 × 16 × 10 in (61 × 41 × 25 cm), max 35 lbs (15 kg), goes in the overhead bin.
Carry-on bags are often measured including handles and wheels, and sometimes weighed at the gate.
Liquids must follow the TSA 100 ml / 3.4 oz rule in one clear quart-sized bag.
Oversized or overweight carry-ons will usually be checked at the gate for an extra fee.
Sometimes even compliant bags can be gate-checked on full flights if overhead space is limited.
Make sure you measure and weigh your bag before flying to avoid extra fees and stress.
On most flights Frontier Airlines has a limited size for both carry-on and personal item bags.
You carry-on bag must be 24” H x 16” W x 10” D / 61 cm (H) × 41 cm (W) × 25 cm (D) (including wheels and handles), up to 35 lbs / 15 kg.
And the personal Item 18” H x 14” W x 8” D / 46 cm (H) × 36 cm (W) × 20 cm (D) must fit under the seat.
But can you actually bring a bag that is more than dimensions?
How Strict is Frontier with Carry-On Size?
Frontier Airlines is known for being slightly strict about carry-on and personal item size limits.
They will take a look at the dimensions of your carry-on suitcase (including wheels / handles) to make sure the bag fits perfectly in the sizer, and in the overhead bin compartment.
If your bag exceeds the size limits, you will have to check in it in and pay additional fees, so it is a good idea to measure and weigh your luggage beforehand.
This is because their business model relies on keeping flight prices affordable, but charging money for any extras like bags and food.
Simply put their revenue depends on it.
Does Frontier Have a Carry-On Bag Sizer?
Yes, Frontier Airlines have a bag sizer at most airports to check whether a suitcase is within the allowed dimensions.
This is a screenshot from X (formerly Twitter), where Maria is not happy about Frontier airline agents, because despite the bag appearing to fit both the personal item sizer and under the seat the made her pay whopping $99.
Does Frontier Have a Weight Restriction?
Frontier does have a weight limits for carry-on luggage (no more than 35 lbs / 15 kg).
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.
All liquids (gels, pastes, and aerosols) must fit in a single quart-sized, clear plastic bag
Remove your baggie 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.
Frontier pro tip: On full flights some of the gate agents are more strict about the published demensions and will check your bag fully packed including wheels and handles so measure before you go
What If My Carry-On is Slightly Over the Limit? Can You Get Away With It?
Image Courtesy of Frontier Airlines
If your bag is just one inch 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 excessively 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.
What Is Checked Bag Weight and Size Limit on Frontier?
For checked bags, Frontier Airlines allows these dimension for a single bag 62 linear inches / 157 cm (height + width + depth combined), and up to 40 lbs / 18 kg for the weight.
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 avoid any extra fees at the airport, make sure that you weigh your suitcase at home before going to the airport.
What Is 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:
Sharp objects
Aerosol insecticides
Large containers of liquids (over 3.4 oz / 100 ml)
Firearms & ammunition
Flammable items
If you have doubts about a specific item, you can find more items on “what you can bring” section.
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 its lightly strict with 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.
I hope this helps
Safe travels and happy flying.
Frontier Airlines Carry-On FAQ
Can I bring more than one carry-on bag?
No. Frontier allows only one carry-on bag per passenger. You need to check in any additional bags.
Can I bring a carry-on that is slightly over the size limit?
Frontier may allow a slightly oversized soft-sided bag if it fits in the sizer, but most oversized bags will not be accepted, they need to be checked.
Can I carry liquids over 3.4 oz / 100 ml in my carry-on?
No. Liquids that is over 3.4 oz / 100 ml are not allowed in carry-on bags, except for medically necessary liquids or baby formula.
Can I bring a carry-on bag if I already have a personal item?
Yes. You can bring one personal item for free and one carry-on bag for a fee, as long as both are within the size limits.
Where does my carry-on go on the plane?
You will need to place your carry-on bag in the overhead bin, while you can place your personal item under the seat in front of you.
Can I bring a soft-sided bag vs. a hard-sided bag?
Both are allowed. Soft-sided bags are sometimes easier to fit in the size at the airport.
Gargie, is writer, traveler & a digital marketing specialist
passionate about traveling and exploring new cultures. She is a savvy traveler who likes to pack light, testing various luggage brands and seeking out budget-friendly airline options. Gargie enjoys creating unique recipes when she’s not on the go.
