Boarding Sizer · 2026 ● Cleared

U.S. Traveler Rio Expandable on Sun Country Airlines

Bag 21×13.5×9" vs sizer 24×16×11"

✓ Cleared

Overhead Carry-On Verdict

Yes — it fits the bin.

Personal Item · Under-Seat ✕ Too big

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Route SUN · U.S

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The verdict, explained

At 21x13.5x9", the U.S. Traveler Rio Expandable fits inside Sun Country Airlines's 24x16x11" carry-on allowance with about 2" to spare on its tightest side. It should slide into the overhead bin without trouble at the gate sizer. On Sun Country Airlines: Carry-on and checked bags are paid add-ons. It is too large for Sun Country Airlines's under-seat personal-item space, so it has to go overhead or be checked.

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Dimension Breakdown inches

Axis	Bag	Sizer	Margin
Length	21"	24"	+3"
Width	13.5"	16"	+2.5"
Height	9"	11"	+2"

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Frequently asked

Does the U.S. Traveler Rio Expandable fit Sun Country Airlines's carry-on size limit?

Yes. The U.S. Traveler Rio Expandable fits within Sun Country Airlines's 24x16x11" carry-on allowance and can go in the overhead bin.

What is Sun Country Airlines's carry-on size limit?

Sun Country Airlines allows carry-on bags up to 24x16x11" (length x width x height), including wheels and handles. Carry-on and checked bags are paid add-ons.

Can the U.S. Traveler Rio Expandable be a personal item on Sun Country Airlines?

No. At 21x13.5x9" it is too big for Sun Country Airlines's under-seat personal-item space (17x13x9"); it travels as a carry-on instead.

Bags that clear Sun Country Airlines's sizer

Alternatives that fit the 24×16×11" limit outright.

The U.S. Traveler Rio Expandable on other airlines

Same bag, different sizers — check before a connecting or return flight.

The bag

U.S. Traveler Rio Expandable

Softside Carry-On · 21×13.5×9"

The U.S. Traveler Rio Expandable is a soft-sided softside carry-on measuring 21x13.5x9 inches. As a soft-sided bag it can compress slightly to squeeze into a tight gate sizer.

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💡 At the gate

Airlines measure at the widest external point — wheels, handles, and bulging pockets all count. Pull soft-bag compression straps fully tight before you size it.