You have found a good fare on China Southern, you are half-excited about the trip, and then a small worry creeps in: what am I actually allowed to bring? Fair question. This post walks you through the whole thing, carry-on and checked, so you turn up at the desk knowing exactly what flies free and what does not.
I have flown China Southern more than a few times, usually connecting through their monster hub at Guangzhou Baiyun, and I have watched plenty of people get caught out at check-in. Not because the rules are unfair, but because China Southern quietly runs two different baggage systems depending on where you are flying. Get that one detail right and the rest is easy. Miss it and you are repacking on the terminal floor while a queue forms behind you. Been there. Seen it. Helped a stranger cram a hairdryer into a coat pocket at gate 42.
So let’s sort it properly. Cabin bags, checked bags, the fee traps, the power bank rule almost nobody warns you about, and a calm plan to keep your money in your pocket.
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China Southern Airlines: Quick Facts
Economy carry-on: 1 cabin bag up to 8 kg, max 55 x 40 x 20 cm, plus a small personal item.
Two checked systems: weight concept on domestic and most international routes, piece concept on flights touching the Americas.
Economy checked (piece routes): commonly 1 to 2 bags at 23 kg each. Business gets 2 x 32 kg, First gets 3 x 32 kg.
Economy checked (weight routes): 20 kg total. Business 30 kg, First 40 kg.
Checked bag size: 158 cm total (length plus width plus height). Over that is oversize, over 203 cm goes as cargo.
Power banks: on domestic China legs they must carry a visible 3C (CCC) mark or security will bin them. More on this below.
Good to know: China Southern is a SkyTeam member and the biggest airline in Asia by fleet size. That scale is why their route rules vary so much. The allowance printed on your ticket always wins over any general chart, including this one, so treat your booking confirmation as the final word.
Right, into the detail. Prices in this guide are a guide only and vary by route, date and demand, so use them to plan rather than as gospel.
The one thing that trips everyone up: two baggage systems
This is the bit I wish someone had told me before my first China Southern long-haul. The airline does not have a single baggage rule. It has two, and which one applies depends on your route.
- Weight concept. Used on domestic China flights and most international and regional routes. You get a total weight allowance and the number of bags matters less.
- Piece concept. Used on flights touching the Americas, and a handful of other long-haul markets. You get a number of bags, each with its own weight cap.
Why does this matter so much? Because a Guangzhou to London ticket and a Guangzhou to Los Angeles ticket can hand you completely different allowances, and the numbers do not line up in the way you would expect. Someone flying to the US often gets two generous 23 kg bags. Someone flying a weight-concept route might get one lump sum of 20 kg and be told their second bag is “excess” even though it looks half empty. Same airline, same cabin, different maths.
And the sneaky version: a trip with a domestic China leg bolted onto an international one. The domestic segment can follow the international allowance if it is on the same ticket, but the security rules on that domestic hop are stricter. Pack for the tightest rule on your whole itinerary and you will never be caught out.
Watch out: the official China Southern site can understate the allowance on some routes. A common example is Australia and New Zealand, where the page may show one checked piece, but a standard Economy ticket to mainland China often actually includes two 23 kg bags. Check the baggage line on your own booking, not just the generic page.
Related Article: flying the other big Chinese carrier on part of your trip? Our Air China baggage allowance guide breaks down the same weight versus piece puzzle for their network.
China Southern carry-on allowance
Carry-on is refreshingly consistent across most routes, which is a small mercy. In Economy and Premium Economy you get one cabin bag up to 8 kg, with a maximum size of 55 x 40 x 20 cm. Business and First passengers get two cabin pieces at the same 8 kg each.
On top of that, everyone can bring a personal item that fits under the seat, a small handbag, a laptop bag or a camera bag, plus a coat, an umbrella and your reading material for free. Travelling with a baby? Infant food and a carrier or basket come as extras too. That is a genuinely sensible list, and it means you are not fighting to cram a jacket into your case.
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| Cabin class | Cabin pieces | Max weight each | Max size |
|---|---|---|---|
| Economy | 1 piece + personal item | 8 kg (17.6 lb) | 55 x 40 x 20 cm |
| Premium Economy | 1 piece + personal item | 8 kg (17.6 lb) | 55 x 40 x 20 cm |
| Business | 2 pieces + personal item | 8 kg (17.6 lb) | 55 x 40 x 20 cm |
| First | 2 pieces + personal item | 8 kg (17.6 lb) | 55 x 40 x 20 cm |
One honest warning. On busy departures, ground staff do sometimes weigh cabin bags, and 8 kg vanishes faster than you think once you add a laptop, a charger, a water bottle and a book. I aim for a kilo under the limit and keep the heavy stuff in my checked bag. Saves the awkward shuffle at the gate.
Tinker’s Tip: screenshot your ticket’s baggage line before you leave home. When a ground agent at a connecting airport questions your allowance, having it there in black and white ends the debate in about ten seconds.
Checked baggage on weight-concept routes
This is the system you will meet on domestic China flights and on a lot of international and regional routes. Instead of counting bags, China Southern gives you a total weight and lets you split it across pieces (within reason). So Economy is a flat 20 kg, and you can bring one big bag or two smaller ones as long as the combined weight stays inside your allowance.
Here is the standard weight-concept picture by cabin.
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| Cabin class | Free checked weight | In pounds |
|---|---|---|
| Economy | 20 kg | 44 lb |
| Premium Economy | 20 kg | 44 lb |
| Business | 30 kg | 66 lb |
| First | 40 kg | 88 lb |
| Infant (no seat) | 10 kg | 22 lb |
The catch with weight concept is that “20 kg total” is easy to blow past. A packed 23 kg suitcase that would be perfectly fine on a piece-concept route is suddenly 3 kg over here, and you pay per kilo. So if you are on a weight-concept ticket, weigh at home and be ruthless. That extra pair of boots is not worth the surcharge.
Reality check: cheaper branded fares can include less than the numbers above, so a bargain “light” ticket might come with a smaller allowance or none at all. The fare name is the rulebook. Read past the word “Economy” to the little label after it.
Checked baggage on piece-concept routes
Fly anywhere touching the Americas (and a few other long-haul markets) and the maths changes. Now you get a set number of bags, each with its own weight ceiling, and it is genuinely more generous for most travellers.
← Swipe to scroll on mobile
| Cabin class | Checked pieces | Max weight each |
|---|---|---|
| Economy | 1 to 2 (route dependent) | 23 kg (50 lb) |
| Premium Economy | 2 | 23 kg (50 lb) |
| Business | 2 | 32 kg (70 lb) |
| First | 3 | 32 kg (70 lb) |
| Infant (no seat) | 1 piece, up to 115 cm | 10 kg (22 lb) |
A couple of route quirks worth knowing. On flights involving the United States, some special or sports items can be accepted up to 45 kg per piece instead of the usual 32 kg cap, which is handy for golfers and skiers. And on certain Middle Eastern and Central and West Asian routes, Economy can get a single piece with a higher 32 kg ceiling. Small print, big difference. Always confirm the exact figure on your itinerary.
Money saver: if your fare only includes one checked bag and you know you need two, buy the extra bag online in advance. Adding it at the airport desk is where the eye-watering charges live.
Related Article: if you are comparing carriers across the region, our Singapore Airlines baggage allowance guide is a useful side-by-side for another major Asia hub airline.
Bag sizes and what counts as oversize
Weight is only half the story. Size matters too, and it is the quieter fee trap because people measure the neat shell of the suitcase and forget the wheels and handles sticking out. Those bits count.
The standard checked bag limit is 158 cm total, meaning length plus width plus height added together. Go past that and you are into oversize territory, which carries a fee. Push beyond 203 cm total and the bag will not travel as normal luggage at all, it has to go as cargo. So a surfboard or an oversized wardrobe box needs planning, not a hopeful wheel up to the desk.
- Up to 158 cm total: standard, no size fee.
- 159 cm to about 203 cm: accepted as oversize for an extra charge.
- Over 203 cm or over 45 kg: cargo only, arrange it separately.
Check this first: measure your packed case, including wheels and handles, before you fall in love with a cheap fare. A big hard-shell can sit right on the 158 cm line empty and tip over it once stuffed.
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Browse the shopExcess, overweight and oversize fees
Nobody enjoys this part, but knowing the shape of the charges helps you dodge them. China Southern prices excess differently depending on the system. On weight-concept routes it is roughly per kilo. On piece-concept routes it is per extra bag or per overweight band. Here is a rough guide, and I really do mean guide, because the exact number swings with route and season.
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| Situation | Typical charge (a guide) |
|---|---|
| Domestic, over your weight allowance | About 1.5% of the one-way Economy fare, per extra kg |
| Bag over 32 kg, up to 45 kg (where allowed) | Around ¥3,000 / £340 / €385 / $445 per piece |
| Oversize, 159 cm to 203 cm total | Around ¥1,000 / £110 / €130 / $150 per piece |
| Extra checked bag (piece routes) | Cheaper prepaid online than at the desk, so book it early |
| Over 45 kg or over 203 cm | Not accepted as baggage, goes as cargo |
The single most expensive mistake is a heavily overweight single bag. Once you climb into that 32 to 45 kg band, the fee is brutal, and it is almost always cheaper to split the load across two bags than to pay the overweight surcharge on one monster. If your case is flirting with the limit at home, deal with it at home. Airport scales do not do sympathy.
Small print: prepaid extra baggage is usually non-refundable and cannot be transferred to another passenger, and unused weight is not credited back. Buy what you will actually use, not a comfort cushion of allowance you will never fill.
The power bank rule nobody warns you about
If you take one thing from this whole post, make it this, because it is catching thousands of travellers out and it has nothing to do with your suitcase. 🔋
Since mid-2025, Chinese aviation authorities have banned power banks without a visible 3C mark (also called CCC, China Compulsory Certification) from all domestic flights in mainland China. It does not matter if it is a big-name brand, fully charged and bought from a proper shop. No printed 3C logo, no boarding. Security pulls it out, and it goes in the bin. There are photos of overflowing confiscation bins at Chinese airports, and it is not a rare edge case.
The frustrating part for international travellers is that most power banks sold in the UK and Europe carry a CE mark, not the Chinese 3C one. So your trusty charger that has crossed four continents can still fail here. The rule officially applies to domestic flights, but people have reported bags being pulled at international departure checkpoints in Beijing, Shanghai and Guangzhou too, usually where domestic and international passengers share the same security lanes.
A few practical pointers:
- Power banks always fly in your cabin bag, never checked. That is a global rule, not just a China one.
- Keep it under 100 Wh (roughly 27,000 mAh) to avoid needing airline approval. Above 160 Wh is banned outright.
- On domestic China legs, the device needs a clearly printed 3C logo, plus a legible brand, model and capacity.
- If yours is not certified, China has power bank rental stations all over the place, or just carry a small charger and use wall sockets.
Must do: before a domestic China flight, physically check your power bank for the printed 3C logo. If it is not there, leave the power bank behind and sort a local rental or a wall charger instead. Do not gamble on the queue moving fast.
Staying connected in China is its own small mission thanks to the local internet setup, so I always sort a data plan before I fly. Grabbing an eSIM means I land with working data straight away, which is handy for pulling up my booking, checking the latest security notes and finding my way out of a terminal the size of a small country.
Related Article: for the full lowdown on flying with batteries, wattage limits and the rules by airline, read our guide on power banks on planes before you pack.
Liquids, batteries and restricted items
Standard security rules apply, plus a few China-specific tightenings on domestic legs. Liquids, aerosols and gels go in containers of 100 ml or less, all zipped into a single clear resealable bag. Medications and baby formula are exempt from the 100 ml limit, which is a relief if you are travelling with either.
Lithium batteries and spare batteries live in your cabin bag, never in the hold. And China Southern, like every airline, has a list of things that are simply not allowed on board, from flammable liquids to certain poisonous substances. Nothing surprising, but worth a glance if you are packing anything unusual.
Domestic China security is noticeably keener on electronics than you might be used to. Laptop charging bricks, gaming laptops and anything with a chunky battery can trigger a manual recheck. It is not personal, it is just thorough. Pack your tech where you can reach it easily and the whole thing moves faster.
Fact: the 3C power bank crackdown came after a run of onboard battery fires. That is also why domestic rules keep power banks switched off in the cabin, with no charging your phone from them mid-flight. Annoying, but you can see the logic.
Infants, kids, sports gear and instruments
Travelling with the family or a hobby that comes in a big case? A few useful bits.
Infants without their own seat do not get the standard cabin allowance, but you can still bring baby food for the flight, a carrier or basket, and a lightweight folding pram up to 115 cm total. On a piece-concept route, a lap infant also gets one checked bag up to 10 kg, and you can check a collapsible stroller or an approved car seat for free. Children with their own seat get the same allowance as an adult on the same fare, which keeps the maths simple.
For sports kit and instruments, the rule of thumb is that anything within your normal allowance and under the size limits travels as part of your baggage. Bigger or heavier gear counts as excess or, past 45 kg or 203 cm, as cargo. Large instruments like a cello usually need their own seat. If you are hauling something awkward, call China Southern ahead of time rather than improvising at the desk. A friendly heads-up is always cheaper than a surprise.
Quick win: add sports equipment to your booking at least a day before you fly. Last-minute additions at the airport almost always cost more than sorting it in advance.
How to avoid baggage fees on China Southern
Pulling it all together, here is the calm way to fly China Southern without a nasty surprise at check-in. None of it is clever, it just works.
- Check your ticket’s baggage line first. It overrides every general chart.
- Work out which system you are on, weight or piece, before you pack a single thing.
- Weigh every bag at home with a luggage scale. Aim a kilo or two under.
- Measure the packed case, wheels and handles included, against 158 cm.
- Buy any extra bag or allowance online in advance, never at the desk.
- Keep valuables, tech, meds and documents in your cabin bag.
- Sort your power bank situation for any domestic leg before you leave home.
And a small thing that has saved me more than once: proper cover. Bags do occasionally go walkabout on tight connections, and a good travel insurance policy that includes baggage delay means you can buy essentials and claim them back rather than sitting in wet clothes waiting for your case to reappear. Keep the receipts, always.
If you are landing into Guangzhou or another big Chinese hub after a long-haul, do future-you a favour and pre-book an airport transfer so you are not haggling at arrivals at 1am with a trolley full of luggage. And for a long layover or an overnight stopover, a quick browse of stays on Booking.com near the airport can turn dead time into an actual rest. 😴
Final thoughts
China Southern is not a stingy airline. The allowances are fair once you know which system you are on, and the biggest headaches come from the two things people skip: reading their own ticket, and sorting power banks for domestic legs. Do those two, weigh your bags at home, and you have handled about ninety percent of the risk.
Pack to the strictest rule on your whole itinerary, keep your booking confirmation handy, and give yourself a small buffer on weight and size. Then you can spend your energy on the fun part, the trip itself, instead of the check-in desk. Safe travels, and enjoy China. It is one of my favourite places to land.
FAQs
How much does carry-on weigh on China Southern?
Your cabin bag can weigh up to 8 kg (17.6 lb) in Economy and Premium Economy, with a maximum size of 55 x 40 x 20 cm. Business and First get two cabin pieces at 8 kg each, and everyone can add a small personal item on top.
How many checked bags do I get on China Southern?
It depends on your route. On piece-concept routes (flights touching the Americas), Economy commonly gets one to two bags at 23 kg each, Business gets two at 32 kg, and First gets three at 32 kg. On weight-concept routes you get a total weight instead, 20 kg in Economy, 30 kg in Business and 40 kg in First.
Can I bring a power bank on China Southern?
Yes, in your cabin bag and under 100 Wh, but on domestic mainland China flights it must carry a visible 3C (CCC) certification mark. Power banks without that printed logo are confiscated at security, so check yours before you fly a domestic leg.
What is the maximum checked bag size on China Southern?
Each checked bag should stay within 158 cm total (length plus width plus height). Bags from 159 cm up to about 203 cm are accepted as oversize for an extra fee, and anything larger than 203 cm has to travel as cargo.
How much are China Southern excess baggage fees?
They vary a lot by route. Domestic overweight is charged at roughly 1.5% of the one-way Economy fare per extra kilo, a very heavy 32 to 45 kg bag can run around ¥3,000 (£340 / €385 / $445), and oversize pieces are around ¥1,000 (£110 / €130 / $150). Prices are a guide and vary by route, date and demand, and prepaying online is nearly always cheaper than paying at the desk.
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Nick Harvey
Hi, I am Nick! Thank you for reading! The Travel Tinker is a resource designed to help you navigate the beauty of travel! Tinkering your plans as you browse!
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