You walk up to the boarding gate at Changi in Singapore, the agent points at the metal floor scale, and you have 30 seconds to figure out what to dump from the bag before you board.
That moment never happens on a domestic flight in Atlanta or Denver, because U.S. carriers do not weigh carry-ons.
Fly Cathay, Ryanair, or AirAsia and the scale is the first thing you meet.
The published weight limits range from no limit at all on most U.S. carriers to a strict 7 kg on most Asian and Pacific routes, and the gap between published rule and actual enforcement matters more than the rule itself.
From 600+ packing videos in the Organizing TV library and over 17 million views of people running this same 7 kg target across Asia, Europe, and the U.S., the pattern is consistent.
The number on the airline website is the floor to plan around, not the ceiling.
The numbers below are the published rules.
Enforcement varies by airport, route, and the agent on the day, but the published rule is what they will fall back on if challenged.
TL;DR: U.S. domestic flights have no carry-on weight limit, while EU and UK legacy carriers cap at 8 to 10 kg and budget airlines run stricter. Asia and Pacific are tightest at around 7 kg with active gate-weighing, so pack to 7 kg for any international flight and you stay safe.
U.S. domestic carriers (no weight limit)
The big U.S. domestic carriers (American, Delta, United, Southwest, JetBlue, Alaska) do not publish a carry-on weight limit.
If you can lift the bag into the overhead bin without help, the gate agents do not weigh it.
Personal item also has no published weight, just dimensions (roughly 18 by 14 by 8 inches across most carriers).
The exception is Frontier and Spirit, which charge for carry-ons by piece, not weight, but the bag still must fit the sizer.
Why Most Carry-On Weight Guides Fall Short
Most online guides on this topic cover the headline weight numbers per airline, then stop.
What gets left out is the practical part: which routes get gate-weighed and which do not, what status tiers exempt you, and how codeshare flights resolve the conflict between two airlines’ rules.
Per-airline tables also rarely cover the tactic of shifting weight to a worn jacket and personal item before the gate-weigh checkpoint, or the cross-region comparison that makes 7 kg the safe international default.
The sections below fill those gaps with the regional cross-tab, the status-tier exemptions, the codeshare rule, and the gate-weighing pattern by carrier type.
European legacy and budget carriers
European carriers split into legacy (full-service) and budget (low-cost), with different rules.
- British Airways: 23 kg carry-on (yes, 23). Most generous in Europe.
- Lufthansa, KLM, Air France: 8 kg standard.
- SAS, Finnair, Iberia: 8 kg.
- Ryanair: 10 kg with Priority, 0 kg without (free bag is personal item only).
- EasyJet: 15 kg with Hands Free, lower for free tier.
- Wizz Air: 10 kg with priority, otherwise personal item only.
Ryanair and Wizz weigh almost every bag at the gate.
Excess fees run 50 to 75 euros per bag, paid by card on the spot before they let you board.
Asian carriers (the strictest)
Asian carriers are generally the strictest on carry-on weight worldwide.
- Singapore Airlines: 7 kg.
- Cathay Pacific: 7 kg.
- Japan Airlines, ANA: 10 kg.
- Korean Air, Asiana: 10 kg combined for both bags.
- Thai Airways: 7 kg.
- AirAsia: 7 kg combined.
- Scoot, Jetstar Asia: 7 kg.
Gate-weighing is routine on Asian carriers. The 7 kg cap is real and enforced.
Pacific carriers (Australia, New Zealand)
Australian and New Zealand carriers fall in the middle.
- Qantas: 7 kg per piece, up to 14 kg combined.
- Air New Zealand: 7 kg.
- Virgin Australia: 7 kg.
- Jetstar: 7 kg standard, 10 kg if you pay for the upgraded fare.
Domestic flights inside Australia tend to enforce more loosely than trans-Tasman or international.
What happens if your bag is over
You have two outcomes when the bag tips over the limit at the gate.
You wear the heavy stuff, or you pay the fee and check it.
The personal item is the sneakiest slot in this game.
Gate agents check its measurements if it looks too big, but they almost never weigh it, so that is where the heavy items go.
Body-worn items are the other free slot.
Heavy jacket, boots, pockets stuffed with the camera battery and the chargers, none of that gets weighed.
Wearing it: pull out heavy items (laptop, books, water bottle, toiletries) and stuff them into your jacket or personal item.
The personal item is usually not weighed, only sized.
Checking it: the airline will gate-check at a fee that varies by carrier, usually 30 to 75 USD or equivalent.
The bag will then arrive at baggage claim at your destination, usually within minutes of the last standard checked bag.
You can also skip the luggage scale entirely.
Step on your bathroom scale holding the bag, note the number, then step on without it and subtract.
That is the trick I use at home before any flight, and it costs nothing.
If you want a dedicated tool, the Etekcity luggage scale on Amazon for under $15 handles up to 110 lb / 50 kg and reads in kg or lb.
How to actually pack to 7 kg
For a 7 to 14-day trip in temperate weather, 7 kg is achievable with: 4 to 5 outfits, 2 pairs of shoes (one worn), one toiletry kit, electronics, documents.
The biggest weight culprits are shoes (each pair 700 to 1200 g), bulky outerwear (jackets at 800 g+), books, and water bottles.
Wear the heaviest pair of shoes and the heaviest jacket on the plane.
That alone shaves 1 to 2 kg from the bag.
Skip hardback books, swap to a Kindle or your phone.
Empty water bottles before the security line and refill airside, since water weighs roughly 1 kg per liter.
Where to find the official rule
Each airline publishes its own carry-on rules on its website.
The numbers above are accurate as of 2026 but airlines do change them, particularly the budget carriers.
IATA’s baggage resolution page is a useful starting reference for international carrier patterns.
The U.S. Department of Transportation’s consumer baggage page covers U.S. domestic enforcement.
It also covers your rights when a bag is mishandled.
Weight vs dimensions: which to prioritize
When packing for an international flight, weight is the tighter constraint, not dimensions.
A 22-liter personal item packed with clothes weighs roughly 4 to 5 kg.
A 40-liter carry-on packed the same way weighs 7 to 9 kg.
This means a smaller bag is not just about overhead bin fit, it is about gate-weighing survival.
For budget airlines with 7 kg limits, a 22-liter personal item is often the safer choice than a full-size carry-on, even when both would technically pass the size check.
For US domestic with no weight enforcement, a full carry-on is fine and you can ignore this calculation entirely.
Codeshare and connecting flights
Codeshare flights apply the operating carrier’s rules, not the marketing carrier’s.
If you book a Delta flight that is operated by Air France, the Air France 8 kg limit applies, not the Delta no-limit default.
For connecting flights, the strictest limit on any leg applies to the whole journey.
A US flight connecting to a Ryanair leg means you pack to Ryanair rules.
Check each leg separately if you are on a mixed-carrier itinerary.
Status-tier and frequent-flyer exemptions
Most legacy carriers grant a higher carry-on allowance to status holders.
Lufthansa Senator and HON Circle members get an extra 8 kg piece on top of the standard 8 kg cabin bag.
British Airways Gold and Silver members get a guaranteed second cabin piece, regardless of fare class.
Star Alliance Gold across most member airlines adds a second cabin item or a higher per-piece weight, depending on the operating carrier.
Business and first-class fares almost universally raise the carry-on allowance to two pieces or a higher single-piece weight.
Co-branded credit card holders sometimes get the same perks on a single carrier, particularly with Delta SkyMiles, United MileagePlus, and BA Amex partnerships.
How carriers actually weigh at the gate
Gate-weighing is not random, it follows a routine that varies by carrier and airport.
Budget carriers (Ryanair, Wizz, Spirit, Frontier, AirAsia, Scoot) weigh almost every bag in the boarding queue.
Asian flag carriers (Singapore, Cathay, Thai) weigh as part of check-in, with a second pass at the gate if the bag looks oversized.
European legacy carriers (Lufthansa, Air France, KLM) weigh selectively, usually when a bag visibly bulges or the gate agent calls a sweep before boarding.
U.S. carriers do not weigh at the gate, only check the dimensions against the sizer if the bag looks oversized.
The pattern: the cheaper the ticket and the more international the route, the higher the chance of being weighed.
Two practical moves cut the gate-weigh risk further.
Board as early as possible so the overhead bins fill before agents start picking bags to check, and keep the bag compressed and slim so it does not draw the eye in the queue.
Quick-reference table by airline
Bookmark this and check before each flight.
Numbers are accurate as of 2026 but always verify on the carrier’s site since budget airlines change them often.
- No published weight limit: American, Delta, United, Southwest, JetBlue, Alaska
- 5 to 7 kg combined or per piece: AirAsia, Scoot, Jetstar Asia, Singapore, Cathay, Thai, Air New Zealand, Virgin Australia, Jetstar (standard fare)
- 8 kg: Lufthansa, Air France, KLM, SAS, Finnair, Iberia, Qatar Airways
- 10 kg: Japan Airlines, ANA, Korean Air, Asiana (combined), Ryanair (Priority), Wizz Air (priority), Jetstar (upgraded fare)
- 15 kg: EasyJet (Hands Free upgrade)
- 23 kg: British Airways
Combine this with the codeshare and connecting-flight rule (strictest limit on any leg applies) and you have the safe-pack number for any itinerary.
Pin this so you’re ready for carry-on weight limits on your next trip!
12-year nomad, carry-on-only traveler across 5 continents, and creator of Organizing.TV.
I help you pack smaller, stress less, and actually enjoy the packing part of travel.
