Sun Country carry-on size

Sun Country’s published overhead (carry-on) limit is 24 × 16 × 11 inches (H×W×D; ~61 × 41 × 28 cm), 35 lb, and it is a paid add-on on the base fare — not free by default. Every reservation still includes one free underseat personal item at 17 × 13 × 9 in. Overhead must fit the sizer at the ticket counter or gate. Exact overhead $ is dynamic (Explore Bag Prices) — cheapest online at booking, higher at the ticket counter, most expensive at the gate (+$10 Gate Handling Fee on top of “At airport” bag fees). Do not treat any single nationwide dollar as fixed.

Sizer enforcement is real: a bag that exceeds 24 × 16 × 11 or fails the physical sizer is not treated as a free overhead item. Sun Country’s published overhead box (24×16×11) is larger than Avelo / Breeze 22×14×9 — but “fits overhead” still does not mean “free on the base fare.”

• Free with ticket: one underseat personal item (17 × 13 × 9 in) on all reservations; mobility / medical devices per the official bags page (not counted as overhead).
• Paid: overhead bag — price via Explore Bag Prices / the booking path; rises booking → ticket counter → gate (+$10 Gate Handling Fee at gate). Do not invent a static nationwide overhead $.
• Checked bags are also paid add-ons — see Sun Country baggage fees; do not duplicate fee tables here.
• Active U.S. Military (with ID): 1 overhead free + 2 checked (up to 100 lb each); companions and Veterans pay standard rates.
• Seats (Best / Exit Row / Standard) are paid seating products — not a bag allowance.
• Optional Bundle Deals (seats + bags + extras) may appear in booking — exact current SKUs/prices: confirm live. There is no named “Basic Economy” bag fare on the bags page — the model is à la carte (underseat only included).

1. Strict sizer at ticket counter or gate. Pre-purchased overhead that doesn’t fit → checked; additional charges may apply.
2. Bin full. Remaining overhead bags may be tagged as checked — only travelers who selected the overhead option use the bins.
3. Gate purchase costs more. “At airport” bag fee + $10 Gate Handling Fee.
4. Soft / expandable bags marketed as “carry-on” can still fail 24 × 16 × 11 when packed — exterior packed size is what matters.
5. Do not confuse free underseat with paid overhead. Base fare = 17 × 13 × 9 personal only; full 24 × 16 × 11 / 35 lb overhead is always a paid add-on unless Military free overhead or a current Bundle Deal includes it (confirm live).
6. Dynamic pricing — never budget from an invented static nationwide overhead dollar.

• Pack to the free underseat 17 × 13 × 9 in if traveling light.
• If you need overhead space, buy online at booking (lowest dynamic tier) — avoid the ticket counter and especially the gate.
• Measure the packed bag including wheels and handles; stay under 24 × 16 × 11 in and 35 lb.
• Military ID: claim the free overhead when eligible.
• Optional Bundle Deals — confirm on live booking if packing more than a personal item; do not assume a named SKU from a blog.

Look for hard or soft carry-ons marketed at or under Sun Country’s published 24 × 16 × 11 inches, and confirm with a tape measure before you fly. Soft under-seat bags at or under 17 × 13 × 9 cover the free personal-item slot. Product marketing often reorders depth/width/height — match Sun Country’s published H×W×D, not a competitor’s axis order.

Disclosure: As an Amazon Associate, BagRule may earn from qualifying purchases. Product cards are optional suggestions — always measure against Sun Country’s published dims.

(Soft Amazon: up to 1–2 product cards may be placed here in production — overhead ~24×16×11 compliant + optional under-seat personal item ≤17×13×9. No hard sell.)

What is the Sun Country carry-on size limit?
Overhead max 24 × 16 × 11 inches (H×W×D; ~61 × 41 × 28 cm); weight limit 35 lb. Must fit the sizer at the ticket counter or gate. Prefer inches; cm is a conversion.

Does Sun Country charge for carry-on bags?
Yes — overhead is a paid add-on on the base fare. Exact $ is dynamic (cheapest online at booking; higher at the ticket counter; highest at the gate with +$10 Gate Handling Fee). Use Explore Bag Prices — confirm your itinerary.

Does Sun Country Basic include a free carry-on?
Sun Country’s base fare is à la carte: 1 underseat item only free. There is no named “Basic Economy” bag fare on the bags page — full overhead is always paid unless Military (1 free) or a current Bundle Deal includes it (confirm live).

What if my bag doesn’t fit the Sun Country sizer?
If you pre-purchased overhead and it doesn’t fit → checked; additional charges may apply. Measure before you fly.

What is Sun Country’s personal item size?
17 × 13 × 9 in, free under the seat on all reservations (“Underseat item”). Details: Sun Country personal item.

Is Sun Country carry-on larger than Avelo or Breeze?
Yes on published max: SY 24×16×11 vs Avelo / Breeze 22×14×9 — but all three typically charge for overhead on the base fare. Don’t assume free bins; see also Frontier and Allegiant.

Fees and rules change. Confirm the latest size limits and live bag prices on suncountry.com bags & optional services / Explore Bag Prices before you travel. BagRule is an independent publisher and is not affiliated with Sun Country Airlines.