What is the carry-on limit for Frontier Airlines?

For Frontier Airlines, carry-on bags must not exceed 24x16x10 in (61x40x25 cm). The weight must be under 35 lbs (16 kg). Fees start around $40 online during booking and escalate to $99 at the gate.

What is the personal item size for Frontier Airlines?

The personal item size is restricted to a maximum of 18x14x8 in (45x35x20 cm) and must fit under the seat in front of you.

How much are the checked bag fees on Frontier Airlines?

For domestic or standard Economy routes, Frontier Airlines charges $45 for the 1st checked bag and $60 for the 2nd checked bag. Elite members or cardholders may qualify for waivers.

Frontier Airlines Baggage Allowance & Fees 2026: Sizer limits & Calculator

Frontier Airlines Sizer Limits Overview

Low-Cost Carrier

Personal Item

18 x 14 x 8 in

Must fit under-seat. Strict limit: 18 x 14 x 8 inches. Frontier actively audits bags at boarding gates.

Carry-On Bag

24 x 16 x 10 in

Max size 24 x 16 x 10 inches. Max weight 35 lbs. Carry-on bags are never included for free on basic tickets.

Checked Bag

40 lbs (18 kg)

Standard checked bag weight is restricted to 40 lbs (18 kg) maximum. 62 linear inches maximum size.

Can I Bring It? Sizer Calculator

Length18 in

Width14 in

Height (Thickness)8 in

Bag Weight15 lbs

Compliance Results for Frontier Airlines

Pass

Under-seat Personal Item

Fits under-seat free

Alert

Overhead Cabin Carry-On

Size fits, but fee applies ($40-$99)

Pass

Checked Hold Bag

Complies with standard checked limits

Estimated Baggage Fee:$0

Detailed Luggage Guidelines

Here is the full breakdown of size sizer dimensions, weight caps, and carry-on/checked bag policies.

Luggage Type	Maximum Size (Inches)	Maximum Size (Metric)	Weight Cap	Standard Cost
Personal Item	18 x 14 x 8 in	45 x 35 x 20 cm	No strict limit	FREE (Fits under seat)
Carry-On Bag	24 x 16 x 10 in	61 x 40 x 25 cm	35 lbs (16 kg)	Fees start around $40 online during booking and escalate to $99 at the gate
1st Checked Bag	Max 62 linear inches	Max 157 linear cm	Max 40 lbs	$45 USD

Pro-Tip for Frontier Airlines Travelers

Frontier gate agents receive a commission (approx. $10) for every oversized personal item they catch and charge at the gate. Expect zero leniency — if your straps bulge out of the sizer, you will pay $99.

Best bag selection: Use a soft backpack and do not overpack it. A hard-sided under-seat bag can easily fail the sizer test if the wheels stick out.

Baggage Penalty & Excess Fees

Exceeding either sizer dimensions or weight caps will result in extra charges at check-in or boarding gates.

Fee Category	Domestic US Rate	Details
1st Checked Bag Fee	$45	Fees start at $45 online, increasing significantly close to departure or at the airport.
2nd Checked Bag Fee	$60	Standard rate for economy passengers.
Overweight Charge	$75	Applies if the bag exceeds standard weight caps (e.g. 50 lbs / 23 kg).
Oversized Charge	$75	Applies if the bag linear dimensions exceed 62 inches.

For more details or to pre-book excess luggage allowances online, visit the official Frontier Airlines Baggage Page.

Frequently Asked Questions

What is the maximum baggage size sizer for Frontier Airlines in 2026?+

Your carry-on bag must measure within 24x16x10 in (including wheels and handles) to fit into Frontier Airlines's overhead bin sizers. Your personal item must fit within 18x14x8 in to go under the seat in front of you.

What happens if my cabin bag exceeds the Frontier Airlines sizer?+

If your luggage exceeds sizer limits at the boarding gate, you will be charged a gate check fee. For Frontier Airlines, this can range up to $99 and the bag will be checked into the hold.

How much does a checked bag cost on Frontier Airlines?+

A standard 50 lbs (23 kg) checked bag on Frontier Airlines costs $45 if checked in. Low-cost tickets may charge extra. Booking your bags online 24 hours prior to departure is always cheaper than purchasing at the airport counter.