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Sun Country Airlines Carry-On and Personal Item Size

Checked against Sun Country Airlines's baggage pages on October 7, 2026

Sun Country Airlines allows a overhead bag of up to 24 x 16 x 11 in (61 x 41 x 28 cm), weighing up to 35 lb (15.9 kg). The underseat item can be up to 17 x 13 x 9 in (43 x 33 x 23 cm). Only the underseat item is free; the overhead bag costs extra.

Bag size, with wheels and handles
AirlinePersonal itemCarry-on
Sun CountryUnderseat item: 1 in over on length (max 17 in); 1 in over on width (max 13 in)Overhead bag: FitsCosts extra
FrontierPersonal item: FitsCarry-on: FitsCosts extra unless your bundle includes it
AllegiantPersonal item: FitsCarry-on: FitsCosts extra ($10 to $75)
SouthwestPersonal item: No size publishedCarry-on: Fits

Your longest side is compared with each airline's longest limit, and so on. Weight is checked only where the airline publishes a limit. "No size published" means the bag just has to fit under the seat in front of you.

Sun Country Airlines overhead bag size

Inches24 x 16 x 11 in
Centimeters61 x 41 x 28 cm (converted)
OrderH x W x D
Weight35 lb (15.9 kg)
Included?Costs extra

Sun Country Airlines underseat item size

Inches17 x 13 x 9 in
Centimeters43 x 33 x 23 cm (converted)
OrderH x W x D
WeightNo limit published

Underseat item examples from Sun Country Airlines: a purse, backpack, duffel bag or other item that fits under the seat in front of you.

Does Sun Country Airlines charge for carry-on bags?

Yes.Costs extra.

  • Every reservation includes one underseat item. An overhead bag is a paid bag option, and only travelers who selected one may use the overhead bins.
  • Bag options are cheapest when you book, more after booking and most expensive at the airport. Bought at the gate, they carry a $10 gate handling fee on top of the airport price.
  • Active U.S. military members get one overhead carry-on free.

More Sun Country carry-on rules

  • The overhead bag must fit the sizer box at the ticket counter or gate. If a prepaid overhead bag doesn't fit, it is checked and extra charges may apply.
  • Once the overhead bins are full, remaining overhead bags are tagged and travel as checked bags.

Is a backpack a Sun Country underseat item?

Yes, if it fits: Sun Country Airlines lists backpacks among its underseat item examples. Measure it packed, including straps and side pockets, against 17 x 13 x 9 in (43 x 33 x 23 cm). Our travel backpack picks, by their makers' measurements:

BackpackAs underseat itemAs overhead bag
Peak Design Travel Backpack 45Lstandard (35L), 22 x 13 x 9.5 in5 in over on length (max 17 in); 0.5 in over on depth (max 9 in)Fits
Peak Design Travel Backpack 45Lexpanded (45L), 22 x 13 x 11 in5 in over on length (max 17 in); 2 in over on depth (max 9 in)Fits
Osprey Farpoint/Fairview Travel Daypackdetachable 15L daypack, 18.1 x 12.2 x 8.3 in1.1 in over on length (max 17 in)Fits

Sun Country vs Frontier vs Allegiant vs Southwest carry-on size

AirlinePersonal itemCarry-onFree carry-on?
Sun Country17 x 13 x 9 in(43 x 33 x 23 cm)24 x 16 x 11 in(61 x 41 x 28 cm)Costs extra
Frontier14 x 18 x 8 in(36 x 46 x 20 cm)24 x 16 x 10 in(61 x 41 x 25 cm)Costs extra unless your bundle includes it
Allegiant8 x 14 x 18 in(20 x 35 x 45 cm)10 x 16 x 22 in(25 x 40 x 55 cm)Costs extra ($10 to $75)
SouthwestNot published24 x 16 x 10 in(61 x 41 x 25 cm)All fares

Compare every airline, including international carriers, in the carry-on size checker.

Sources

Limits are from each airline's own pages, checked October 7, 2026. Airlines change bag rules often, so check before you fly. Conversions use 1 inch = 2.54 cm. Backpack sizes are from the manufacturers.