China Southern Airlines allowance at a glance
| Bag | Maximum size | Maximum weight | Notes |
|---|---|---|---|
| Carry-on | 22x16x8 in55x40x20 cm | 8 kg | 1 piece Economy/Premium Economy, 2 pieces First/Business, domestic and international |
| Personal item | Not published | No stated limit | One free personal item: small computer bag, camera bag, briefcase, or handbag, under the seat. No published size limit. |
| Checked bag | 62 (US routes, per piece) in158 (US routes, per piece, L+W+H) cm | Economy 50lb/pc; Business/First 70lb/pc; US routes lbEconomy 23kg/pc (2 pcs); Business 32kg/pc (2 pcs); First 32kg/pc (3 pcs); US routes. Domestic China: First 40kg, Business 30kg, Premium Economy/Economy 20kg kg |
This page goes deeper on one part of the policy. The full record is at China Southern Airlines Baggage Rules.
China Southern Airlines carry-on size tops out at 55 x 40 x 20 cm, or 22 x 16 x 8 inches, with an 8 kg weight cap. That weight limit is the detail most US travelers miss. Domestic carriers rarely weigh a cabin bag at all, but China Southern does, on every fare.
The China Southern Airlines carry-on size box is generous by width but tight by depth. At 8 inches deep it rules out several popular hardsides once wheels and a handle are added.
What the box actually allows
First class and business passengers get two carry-on pieces at 55 x 40 x 20 cm and 8 kg each. Premium economy and economy get one piece at the same size and weight.
The rule is identical on domestic and international China Southern flights. Most carriers loosen the box for long international legs; China Southern does not.
How China Southern checks it
China Southern states plainly that it inspects carry-on baggage at the check-in counter, the security check counter, the boarding gate and again in the cabin. That is stated on the airline’s own carry-on baggage page.
A bag that clears the counter can still get pulled at the gate. When overhead space runs short, China Southern’s own wording warns that some carry-on items get moved to the hold.
A bag sent to the hold at that point may not travel on the same flight as its owner. Anything over the box or the 8 kg limit has to be checked at the counter or a self-service kiosk before security.
Oversized cabin items are charged under the airline’s excess baggage rate rather than waved through. There is no separate gate fee published apart from that excess baggage charge.
Fares and the personal item
China Southern does not sell a bare fare that drops the carry-on entirely. Every published fare class keeps the full China Southern carry-on size allowance, unlike the basic economy fares some other carriers sell.
Every passenger also gets one free personal item. It can be a small computer bag, briefcase or handbag, carried under the seat in front.
China Southern publishes no separate size limit for the personal item, unlike its carry-on box. Use the personal item versus carry-on guide to keep it genuinely small enough for under the seat.
Infants without their own seat do not get the personal item allowance.
Bags that fit the China Southern Airlines carry-on size box
An 8 kg cabin limit punishes a heavy shell before you have packed anything. The empty weight of the case matters as much as its footprint here.
Check any bag against the airline’s own numbers with the carry-on size checker before you buy or pack.
| Bag | Maker’s overall size | Fit against China Southern’s box |
|---|---|---|
| Samsonite Omni PC 20 inch hardside spinner | 20 x 14.5 x 9.5 in with wheels and handle | Clears the width and length. It runs about 1.5 in over on depth, so it sits under a seat rather than a shallow bin. |
| Kenneth Cole Reaction Out of Bounds 20 inch | An inch shorter than most 20 inch hardsides, per the maker’s listing | The shorter build clears China Southern’s tighter depth limit better than a standard 20 inch case. |
| Amazon Basics 20 inch hardside spinner | Standard 20 inch hardside with wheels attached | Fits the length and width. It is light enough empty that packing to 8 kg stays realistic for a short trip. |
| Travelpro Maxlite 5 21 inch softside carry-on spinner | Expands past its listed size when the zip is opened | Fails China Southern’s depth limit once expanded. Keep the zip closed or it will not pass the sizer. |
Weigh whatever you buy while it is packed, on a bathroom or luggage scale, before you leave the house. An Etekcity digital luggage scale costs less than one overweight fee.
How this compares to other Chinese and regional carriers
China Southern’s 8 kg cabin weight cap matches the pattern at Air China and Cathay Pacific. Both of those carriers also weigh carry-on bags rather than judging by size alone.
A US traveler used to weight free domestic carry-on rules should treat any of these three the same way. Pack light, then confirm the number with a scale.
The bottom line
China Southern Airlines carry-on size rules are a hard 55 x 40 x 20 cm box and an 8 kg weight cap on every fare. The airline checks it at four separate points, from the counter to the cabin door.
Pick a case that clears the depth limit with wheels and handle attached, and keep any expansion zip closed. Weigh it before you fly rather than finding out at the gate.
Common questions
What is the carry-on size limit for China Southern Airlines?
China Southern allows 55 x 40 x 20 cm, or 22 x 16 x 8 inches, per carry-on piece with an 8 kg weight cap on every fare.
Does China Southern weigh carry-on bags?
Yes, China Southern states an 8 kg weight limit per carry-on piece and inspects bags at the counter, security, the gate and in the cabin.
How many carry-on bags can I bring on China Southern?
First and business class get two pieces, and premium economy and economy get one piece, all within the same size and weight limit.
Is there a China Southern basic economy fare with no carry-on?
No, China Southern does not sell a fare that removes the carry-on allowance, unlike some carriers with a stripped down basic fare.
What happens if my carry-on does not fit at the China Southern gate?
The bag can be moved to the hold at the gate if overhead space runs short, and it may not travel on the same flight as the passenger.
Does China Southern allow a free personal item?
Yes, one small computer bag, briefcase or handbag is allowed free under the seat, with no separate size limit published.
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