Sun Country Airlines Luggage Policy: A Complete Guide for Travelers

Sun Country Airlines has built a loyal following by unbundling its lowest fares, giving passengers the flexibility to pay only for what they need. That structure means careful baggage planning is the single most effective way to avoid adding $100 or more to the cost of a round-trip ticket. Every bag—whether it rides in the cabin overhead or gets checked beneath the plane—has a price tag unless you pick a fare that includes it or carry the right co-branded credit card. This guide breaks down exactly what you can bring for free in 2025, what you’ll pay for a carry-on or checked suitcase, how to dodge overweight and oversize penalties, and how Sun Country’s fare bundles, special equipment rules, and credit card perks change the equation. Use it to pack strategically and board with confidence.

How Sun Country’s Fare Bundles Affect Your Baggage Allowance

Sun Country sells three fare bundles: Basic, Better, and Best. Your luggage inclusion jumps significantly from one tier to the next, and the price difference between the bundles often costs less than buying bags separately after the ticket is issued. Understanding these bundles is the first step to a lower total travel cost.

  • Basic: One personal item that fits under the seat is included at no charge. Everything else—a full-size carry-on, any checked suitcase—requires a separate purchase. Basic fares work well for short trips when you can pack everything into a small backpack or tote.
  • Better: Adds a standard carry-on bag for the overhead bin on top of the free personal item. You still pay for checked luggage, but the bundled carry-on usually costs less than adding it à la carte later. Better is the sweet spot for many travelers who want to avoid gate-side sticker shock without paying for a checked bag they might not use.
  • Best: Rolls a carry-on and one checked bag (up to 50 pounds and 62 linear inches) into the fare, along with the personal item. This is Sun Country’s only bundle that automatically includes a checked suitcase. It also comes with priority boarding, which helps secure bin space for your carry-on.

You can upgrade your bundle after booking through the Manage Travel section on Sun Country’s website. The price difference is usually the same as the initial offer, but it pays to check early: last-minute upgrades might reflect a higher bundle price if close to departure. When comparing options, always price out the Better bundle versus adding a carry-on separately on a Basic ticket; the bundle often saves $15–$25 each way. Visit the Sun Country fare options page before you commit to see the latest pricing for your route.

Carry-On Baggage Explained: Dimensions, Fees, and What Counts

The Personal Item (Always Free)

Every passenger, regardless of fare class, can bring one personal item that must slide completely under the seat in front. Acceptable examples include slim backpacks, purses, messenger bags, laptop sleeves, and small duffels that can be compressed. Sun Country suggests a maximum size of roughly 17 x 13 x 9 inches, but the real test is the under-seat space on your specific aircraft. A lightly packed daypack almost always qualifies; a rigid mini-suitcase does not. Keep in mind that if your personal item is clearly overstuffed, gate agents may ask you to place it in the carry-on sizer. If it fits but you haven’t paid for a full carry-on allowance, you’ll be charged the gate carry-on fee.

Items that fit in your personal bag still need to clear TSA screening. All prohibited items—sharp objects, large liquids, self-defense sprays—stay off the aircraft regardless of bag size. Confirm your packing list against the TSA’s “What Can I Bring?” page if you have any doubts.

Full-Size Carry-On Bag (Overhead Bin)

If you intend to use the overhead locker, your bag cannot exceed 24 x 16 x 11 inches including wheels, handles, and side pockets. This measurement matches the standard carry-on frame used by most U.S. airlines. Sun Country gate agents actively size bags when a flight is full, and the sizer is the final authority. Soft-sided bags that bulge beyond the metal frame will be rejected.

On a Basic fare, a full-size carry-on is not free. Pre-purchasing it online at booking or later via Manage Travel typically costs between $25 and $40 each way. If you bring an unpaid carry-on to the gate, the fee climbs to $50 or $60, payable on the spot, and the bag will be checked into the cargo hold. Better and Best fares already include the overhead bin allowance, so no extra purchase is needed. For Basic ticket holders, the safest move is to add the carry-on at least 24 hours before departure to lock in the lower rate.

When Your Carry-On Is Too Large

A bag that cannot fit into the sizer will be gate-checked as regular checked luggage. You’ll pay the day-of checked bag fee—usually $50 or more—even if you already bought a carry-on allowance for a bag that turned out to be oversize. No amount of negotiation will waive this. A soft measuring tape takes 30 seconds to use at home and can save you that fee entirely. Measure length, width, and height with all compartments empty but with the bag fully expanded as it would be when packed.

Checked Baggage: Fees, Weight Limits, and Size Rules

Size and Weight Limits

Every checked suitcase must stay within 62 linear inches (total length + width + height) and weigh 50 pounds or less to travel at the standard rate. Exceeding either threshold triggers a surcharge. A bag that measures between 63 and 80 linear inches adds a $75 oversize fee per direction. Anything larger than 80 linear inches will not be accepted. Weight violations are tiered: luggage between 51 and 60 pounds costs an extra $20 on top of the checked bag fee; 61 to 100 pounds brings a $60 surcharge. No bag over 100 pounds can fly on Sun Country. International destinations—especially Mexico, the Caribbean, and Central America—often enforce a hard 50-pound cap with no overweight option. A suitcase that reads 51 pounds may be rejected or require you to redistribute weight at the ticket counter. Always verify your specific route’s rules on the Sun Country baggage page before heading to the airport.

How Much Does a Checked Bag Cost?

Checked bag prices are dynamic and depend on demand, route, and when you pay. Pre-purchasing online almost always results in the lowest price—typically $35 to $45 for the first bag on domestic flights. The second and third bags cost progressively more. International fares may follow a different pricing schedule. Airport counter prices are always the most expensive; they can easily be $55 or more for the first suitcase. To get the best deal, add checked bags during initial booking or immediately afterward through Manage Travel. You can do this up to 24 hours before departure.

How to Add Checked Bags to Your Reservation

Log into your booking on Sun Country’s website, select “Add Bags,” and pay. The system will show you the current per-bag price for your itinerary. You can also add luggage via the Sun Country mobile app. Avoid waiting until check-in at the airport—whether at the kiosk or the desk—because those prices are the highest. If your plans change, pre-paid bags are non-refundable unless you cancel the entire reservation within the 24-hour risk-free window.

Special Items and Sports Equipment

Sun Country accepts sports gear under the same checked luggage fee structure, provided each item stays within the standard size and weight limits. Skis, snowboards, golf clubs, hockey equipment, and fishing rods count as one checked bag. If your ski bag measures under 62 linear inches and weighs 50 pounds or less, you pay only the regular checked bag price. Anything over triggers the oversize or overweight fee. Bikes are generally accepted only in a hard-sided case and may automatically incur an oversize charge because the case often exceeds 62 inches. Always notify the airline in advance when traveling with unusual sports equipment to confirm acceptance and any additional handling rules.

Musical instruments operate under a separate set of guidelines. A small string instrument—violin, viola—can travel as your carry-on if it fits in the overhead bin and you have purchased a carry-on allowance. Larger instruments such as cellos, basses, or guitars often require purchasing an extra seat to secure them upright. Sun Country strongly recommends contacting customer service before booking to discuss instrument carriage; showing up at the gate with an unaccounted cello will likely result in denied boarding.

Strollers, car seats, and mobility devices (wheelchairs, walkers, canes) are checked free of charge and do not eat into your baggage count. You can use a stroller all the way to the boarding door and gate-check it there. Assistive medical devices such as CPAP machines and portable oxygen concentrators may be carried on as additional items beyond your personal-item allowance if they are properly tagged and presented separately at the gate.

Traveling Internationally: Destination-Specific Baggage Notes

On routes to Mexico, the Caribbean, and Central America, the core baggage framework remains intact, but the 50-pound weight limit is often absolute. Ground handlers at smaller airports may have no scale tolerance, meaning a 50.5-pound bag could be turned away until you offload items. Seasonal flights to leisure destinations can also have limited cargo capacity, making advance bag purchase even more important—if the flight reaches its maximum checked bag load, passengers who haven’t pre-paid may have to ship their luggage separately. Review your itinerary’s specific baggage notice by entering your confirmation number on the bags and optional services page before packing for an international beach trip.

Baggage Benefits with the Sun Country Visa Signature Card

The Sun Country Visa Signature Card, issued by U.S. Bank, acts as a shortcut around baggage fees for frequent flyers. Primary cardholders receive one free checked bag on every Sun Country flight, even on Basic fares, and can extend that benefit to up to four companions traveling on the same reservation. The free bag must adhere to the standard 50-pound and 62-inch limits. Additionally, the card grants Group 2 priority boarding, which allows you to get on the plane sooner and claim overhead bin space before it fills. These two perks together can easily offset the card’s annual fee after a single round-trip for a family of three. Overweight and oversize surcharges still apply regardless of the card benefit. You can learn more and apply through the Sun Country credit card page.

Packing Tips to Avoid Sun Country Baggage Fees

Low-cost airline travel rewards travelers who pack light and think ahead. Use these tactics to stay within Sun Country’s limits and keep your cash.

  • Measure and weigh everything twice. Buy a soft tailor’s tape measure for dimensions and a digital luggage scale for weight. Packers often forget that wheels and side handles add inches.
  • Build a capsule wardrobe. Choose neutral separates that mix into multiple outfits. Four shirts, two pairs of pants, and one jacket can stretch into a week’s worth of combinations when planned well.
  • Wear the heaviest items. Jackets, boots, and jeans take up enormous space and weight. Put them on for the flight instead of stuffing them into your suitcase.
  • Compress your load. Rolling clothes or using compression packing cubes shrinks bulk by up to 30%. Less volume means a better chance of fitting bulky souvenirs on the return trip.
  • Go solid with toiletries. Shampoo bars, toothpaste tablets, and solid stick deodorant bypass both the TSA liquids rule and the risk of exploding liquids in your bag.
  • Rent gear at your destination. Snorkel sets, beach umbrellas, and even golf clubs can often be rented for less than the round-trip oversize and overweight fees Sun Country would charge to fly your own.
  • Ship items ahead. For long ski trips or golf vacations, compare the cost of checked bag and oversize fees against ground shipping your equipment via a service like Ship Skis or Luggage Forward. Sometimes the price is a wash, and shipping removes the hassle entirely.
  • Max out the free personal item. A well-organized under-seat bag can hold a laptop, tablet, medications, a change of clothes, snacks, and all your in-flight essentials. That leaves your paid carry-on or checked bag for the rest.
  • Always pre-pay online. The airport counter is the most expensive place to buy a baggage allowance. Secure your bags through the website or app at least 24 hours out.

At the Gate: Real-World Enforcement and What to Expect

Sun Country operates single-aisle aircraft with limited overhead bin space. When a flight is full—as many leisure routes are—gate crews actively look for oversized or unpaid carry-ons. Even a properly sized bag may be gate-checked for free if bins are full, but only if you have already purchased the carry-on entitlement. Passengers on Basic fares who show up with a roller bag will always pay the higher gate rate, and the bag will go beneath the plane.

To move through boarding without friction, keep your personal item clearly within the sizer footprint, and avoid hanging shopping bags, neck pillows, or coats on your carry-on. Gate agents consider anything strapped to the bag part of its total dimensions. Boarding with everything consolidated shows you understand the rules and helps the team close the door on time.

Frequently Asked Questions

Does Sun Country offer free checked bags?

Only the Best fare bundle and the Sun Country Visa Signature Card include a free checked bag. The cardholder and up to four companions on the same reservation receive the benefit. Otherwise, every checked bag costs extra.

What are the exact size limits for a carry-on bag?

Sun Country’s maximum is 24 x 16 x 11 inches, measured with wheels and handles. The gate sizer is the final judge; soft bags that bulge beyond the frame will be rejected.

How much does a carry-on bag cost on a Basic fare?

Pre-purchased online, the price generally falls between $25 and $40 per segment. At the gate, the same bag will cost $50 to $60. Always add the carry-on before airport check-in to avoid the penalty.

What happens if my checked bag weighs 51 pounds?

A $20 overweight fee applies for bags between 51 and 60 pounds. From 61 to 100 pounds, the surcharge jumps to $60. No bag over 100 pounds is accepted, and many international destinations cap the limit at exactly 50 pounds with no exceptions.

Can I pool baggage allowance across multiple passengers?

No. Baggage allowances are per-person and not transferable between travelers, even on the same reservation.

Are strollers and car seats really free?

Yes. Strollers, car seats, and mobility aids like wheelchairs are checked at no charge and do not reduce your other baggage allowance. You can gate-check a stroller right before you step onto the aircraft.

Does Sun Country weigh carry-on bags?

Sun Country does not typically weigh carry-ons, but gate agents focus on size. A bag that fits the sizer is allowed regardless of weight, provided you can lift it into the bin yourself.

What if my personal item is oversized?

If a personal item clearly won’t fit under the seat, the gate team may sizer-test it. If it fits the carry-on sizer and you don’t have a carry-on allowance, you’ll pay the gate carry-on fee. If it doesn’t fit, it will be checked and you’ll pay the full checked bag rate.

Can I bring a pet carrier as my personal item?

A soft-sided pet carrier that fits under the seat counts as your one personal item on Sun Country. You cannot bring both a pet carrier and a separate personal bag. A separate pet fee applies; check Sun Country’s pet policy before booking.

Will my CPAP machine cost extra?

No. CPAP machines and other medical assistive devices can be carried on board in addition to your personal item if they are presented separately and tagged as medical equipment at the gate.

Where can I find the most up-to-date baggage rules?

All current fees, size limits, and destination-specific exceptions are published on Sun Country’s official baggage page. We update this guide regularly, but always confirm the details on the airline’s site right before you pack.