AirlineLimitsAirline baggage limits, decoded.

Frontier Airlines baggage allowance and rules

Last checked: 7/14/2026 • IATA: F9 • ICAO: FFT

Not a binding baggage approval: fare, route, aircraft or operating carrier can vary. Check the linked official sources before booking and departure.

Carry-on for the overhead bin

Depends on fare or booking option

Dimensions H×W×D
UnitHWD
in241610
Weight
35 lb

One overhead carry-on may measure up to 24 × 16 × 10 in and weigh up to 35 lb, including handles, wheels and straps. It is purchased separately or included with an eligible bundle or Elite benefit.

Will my bag fit?Compare your bag's dimensions and weight with the airline figures

Enter the finished outside measurements of your packed bag. This compares numbers only and is not a baggage approval; fare, route, aircraft and operating-carrier conditions still apply.

Your bag dimensions
Your bag weight

Source for this section: Bag options

Personal item

Included in fare

Dimensions H×W×D
UnitHWD
in18148
Weight
35 lb

Every ticket includes one personal item up to 18 × 14 × 8 in and 35 lb. Handles, wheels and straps count toward the dimensions; the item must fit completely in the boarding sizer and under the seat in front.

Source for this section: Bag options

Checked baggage

Weight (standard limit per piece)
40 lb
  • A standard checked bag may weigh up to 40 lb and measure up to 62 linear in, including handles, wheels and straps.
  • Business bundles include two bags up to 50 lb each, while other inclusion and pricing depend on the bundle, status and purchase time.
  • Up to six checked bags may be accepted per trip, although Frontier can reduce that number on some flights for operational reasons.

Source for this section: Bag options

Overweight & excess baggage

  • For bookings made on or after April 4, 2026, a 41–50 lb checked bag costs an additional $75 and a 51–99.99 lb bag $129 per direction.
  • A bag measuring 63–110 linear in costs an additional $75 per direction.
  • Fees can combine; checked pieces weighing 100 lb or more or exceeding 110 linear in are not accepted, apart from applicable assistive-device exceptions.

Source for this section: Bag options

Liquids in carry-on

Varies

Frontier points travellers to the TSA 3-1-1 rule for U.S. screening: containers up to 3.4 oz in one quart-size bag. Security rules at other departure airports can differ.

Source for this section: Travel policies

Pets

Pet transport

Varies

On flights within the US, Frontier accepts domesticated dogs, cats, rabbits, guinea pigs, hamsters and small household birds at least eight weeks old for a one-way fee; ordinary pets are cabin-only, stay in their container and are never checked or carried as cargo.

More details
  • A hard carrier may measure up to 18 × 14 × 8 in and a soft carrier up to 18 × 14 × 11 in, and either must fit under the seat.
  • International flights accept only qualifying service dogs under the applicable entry rules.

Source for this section: Pet policy

Special baggage

Sports equipment

Varies

Frontier applies item-specific rules to sports equipment.

More details
  • Small equipment must fit the normal carry-on dimensions or be checked; checked and carry-on prices follow the purchased fare option, with overweight and oversize fees where applicable.
  • A checked bicycle costs $100 per direction for bookings made on or after May 29, 2026, while some items such as skis have different packing and oversize treatment.
  • Protective packing is required or strongly recommended, so the current Special & Fragile Items table controls.

Source for this section: Fragile and special items

Musical instruments

Varies

A small instrument may exceed Frontier's normal carry-on dimensions if it fits safely in available overhead space; Frontier will not remove other baggage or provide special boarding, and otherwise the instrument is gate-checked.

More details
  • Instruments may also be checked at the fare-option bag price plus applicable overweight or oversize charges.
  • A large instrument such as a cello that does not fit overhead needs a purchased seat to travel in the cabin, and items over 100 lb are not accepted.
  • Protective hard-sided packing is recommended for checked transport.

Source for this section: Fragile and special items

Medical equipment

Allowed

Required assistive devices, FAA-approved portable oxygen concentrators and respiratory devices do not count toward the personal-item limit and travel without a bag charge; compressed or liquefied medical oxygen cylinders are not accepted in the cabin or hold.

More details
  • Use of a POC requires Frontier's medical authorization form or an equivalent physician statement, plus protected cabin-only spare batteries for at least 150% of the scheduled flight time.
  • Battery-powered CPAP, ventilator and similar approved respiratory devices may be used without medical authorization.

Source for this section: Special services and medical devices

Equipment-specific limits and destination restrictions remain decisive.

Prohibited items in the cabin

  • Explosives, fireworks and signal flares
  • Flammable fuels, propane tanks, Sterno fuel and paint products
  • Strong corrosive, toxic, radioactive and oxidising materials
  • Compressed or liquefied medical oxygen cylinders and chemical oxygen generators
  • Smart bags with a non-removable, damaged or over-100 Wh lithium battery
  • A smart-bag battery that meets Frontier's rule must be removed before boarding, remain in carry-on baggage and have its terminals protected.
  • Frontier's bag page lists aerosols, weapons, corrosives, explosives, radioactive materials, lithium batteries, oxidisers, flammables and toxins as prohibited in checked baggage, but some exact items have cabin or limited-quantity exceptions under TSA or FAA rules.
  • This summary is not exhaustive; verify the exact item and baggage location before packing.

Source for this section: Restricted items

Official source

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