Singapore Airlines Baggage Rules: Carry-On and Fees

In Economy and Premium Economy, Singapore Airlines allows one cabin bag weighing up to 7kg (15.4 lbs), with combined dimensions (length plus width plus height, including handles and wheels) of no more than 115cm (about 45 inches).

On top of that main cabin bag, you're also allowed one personal item, capped at 40 by 30 by 10cm (about 15.7 by 11.8 by 3.9 inches), that has to fit under the seat in front of you. Business and First/Suites passengers get a more generous cabin allowance, though Singapore Airlines' own published figures for those cabins are less detailed than the Economy rule above, so confirm your exact allowance in Manage Booking if you're flying a premium cabin.

The 115cm combined-dimension figure is measured the same way most international carriers measure it: length plus width plus height added together, wheels and handles included in the total. A bag sold as a 21 inch carry-on with typical proportions usually lands close to this line, which is why it's worth checking your specific bag's number rather than trusting the size label alone.

A 7kg cabin bag limit is meaningfully stricter than airlines like Delta or American that publish no carry-on weight limit at all, only a size cap. A standard 21 or 22 inch hardside carry-on packed for a US domestic flight can easily weigh 12 to 15kg once loaded, well over Singapore Airlines' limit.

If you're flying Singapore Airlines, weigh your packed carry-on at home on a luggage scale before you leave. Getting flagged at check-in usually means either repacking on the spot or paying to check the bag you planned to carry on.

Laptops and camera gear are usually the biggest hidden weight in a carry-on. A 15 inch laptop, charger, and a couple of camera lenses can add 3 to 4kg on their own, which eats more than half of Singapore Airlines' 7kg allowance before you've packed a single change of clothes. Moving non-battery accessories, like lenses or a padded case, into your checked bag instead of your cabin bag is one way to claw back weight, while keeping the laptop and any spare batteries with you in the cabin as required.

On flights to or from the US or Canada, Singapore Airlines uses a piece-based system: Economy passengers get two checked bags free, each up to 23kg (50 lbs). This mirrors the two-free-bag structure used by several other international carriers on the same routes.

An additional bag beyond that free allowance, or a bag that exceeds the per-piece weight limit, is priced per piece rather than at one flat published rate, and the price varies significantly by specific route.

On routes outside the US and Canada, Singapore Airlines allows a total checked weight allowance instead of a fixed number of pieces, with the total depending on your Economy fare type (fares are often marketed under names like Lite, Standard, and Flexi, with the total allowance rising as the fare gets more flexible).

Whichever system applies, no single checked bag can exceed 32kg (70 lbs), a limit Singapore Airlines ties to workplace safety handling rules rather than baggage policy specifically. Excess baggage on weight-concept routes is charged per kilogram, and the per-kg rate varies by route, so use Singapore Airlines' own booking tools for your specific itinerary rather than relying on one number found online.

Premium cabin passengers and KrisFlyer elite members typically get a heavier or more generous checked baggage allowance than the standard Economy figures above, though Singapore Airlines' own published pages don't break the exact kilogram or piece bump out as clearly as the Economy rule does. If you're flying Premium Economy, Business, or First/Suites, or holding elite status, confirm your specific allowance in Manage Booking rather than assuming it matches Economy.

This is worth checking before you pack for a trip where you're relying on a bigger allowance, since the gap between Economy and a premium cabin's real checked baggage limit can be substantial on Singapore Airlines' long-haul routes. Booking a premium cabin specifically to get a bigger baggage allowance rarely makes financial sense on its own, but it's a real side benefit worth factoring in if you're already comparing cabins for other reasons.

Singapore Airlines' 7kg Economy cabin limit matches Qatar Airways' identical 7kg cap, both stricter than Iberia's 10kg allowance and considerably stricter than British Airways, which publishes no cabin weight limit at all. Among the carriers covered on this site, Singapore Airlines and Qatar sit at the tight end of the cabin weight spectrum.

If you're used to flying a US domestic carrier with no published carry-on weight limit, that habit doesn't transfer to Singapore Airlines. Weigh your packed carry-on at home before your trip, not at the check-in counter, especially if your itinerary connects onto Singapore Airlines from a US carrier with looser rules.

If you fly more than just Singapore Airlines, it helps to browse every airline's carry-on rules in one place, since a 7kg cabin limit is far stricter than most US carriers enforce.

Our luggage size directory breaks down real bag dimensions pulled from actual product listings, which makes it easier to find a carry-on light enough to clear Singapore Airlines' 7kg limit.