Buying gas canisters abroad
Fuel cannot fly, so every trip you fly to ends with the same errand: find a canister that fits your stove, in a country whose shops you do not know. The answer is knowable in advance, and getting it wrong leaves you with a stove and no way to light it.
Why this is always the plan
Gas canisters are forbidden on passenger aircraft in both cabin and hold, full or nominally empty, with no workaround and no exception for outdoor equipment. The same applies to liquid fuel and to fuel bottles that merely smell of it. Flying with camping gear covers the wider rules; the practical consequence is that fuel is a destination purchase, every time.
That makes canister compatibility a question you should answer before you buy the stove, not after you land.
The three systems, and why they do not mix
Threaded (EN 417, the Lindal valve). The 7/16" screw thread used by MSR, Jetboil, Primus, Optimus, Soto and most modern backpacking stoves. Resealable, so you can take a part-used canister off. This is the system nearly every compact stove sold as backpacking gear uses, and the one this site's gas canister guide covers in detail.
Campingaz CV. Resealable like threaded canisters but a different fitting, so a CV canister will not screw onto an EN 417 stove and vice versa. Sold under names like CV270 and CV470, and stocked far more widely in ordinary European shops than any threaded canister.
Pierceable. The puncture type — German Stechkartusche, Campingaz C206 and equivalents. A spike pierces the canister on first use, so it cannot be removed until empty. Cheap, extremely common in European supermarkets and hardware shops, and useless with a backpacking stove.
What is actually sold where
Outdoor retailers, worldwide. Threaded EN 417 canisters are the default in dedicated outdoor shops across Europe, North America, Japan, South Korea, Australia and New Zealand. If your destination has a real outdoor shop, this is a solved problem — and shops near trailheads stock them precisely because arriving hikers need them.
European supermarkets and hardware shops. Here the odds invert. Campingaz CV and pierceable canisters dominate general retail in France, Spain, Portugal, Italy and Germany, while threaded canisters are often absent. A supermarket is a good bet for fuel and a bad bet for your fuel.
Much of Asia. Flat butane cassette cartridges — the long, oval cans used for tabletop stoves — are near-universal in convenience stores across Japan, Korea, Taiwan and Southeast Asia, and cost very little. They do not fit a threaded stove directly, but adapters exist and are widely sold locally.
Elsewhere. In much of Africa, Central Asia and rural South America, no canister standard is reliable. This is where a multi-fuel or alcohol stove stops being a preference and starts being the only plan that survives contact with the destination.
How to check before you go
Search for the destination town plus a retailer category rather than a product: an outdoor shop's website will list the brands it carries, and brands tell you the valve system. Failing that, a national outdoor chain's store locator answers the question in a minute. Trip reports and forum threads for the specific trailhead are usually more current than any brand's own availability page.
Where the answer is genuinely unclear, email the closest shop or a nearby campsite before you fly. It is a two-line question, and campsite receptions field it constantly.
Adapters: useful, with conditions
Adapters that let a threaded stove run from a flat butane cassette, or refill a small canister from a larger one, are cheap and widely sold. The first kind is genuinely useful and is the standard workaround across Asia. The second — decanting between canisters — is a different matter: it is straightforwardly dangerous, invalidates any stove warranty, and produces canisters that are illegal to transport by any means.
Buy an adapter at the destination rather than carrying one, and be aware that pure butane performs poorly below roughly 0 °C where the isobutane/propane blends in threaded canisters keep working. In shoulder-season conditions the adapter route costs you real performance — see shoulder season and winter kit.
The stove choice this should influence
If most of your trips involve a flight, the destination fuel question deserves a vote in which stove you own. A threaded canister stove is the lightest and most convenient option and is well supplied anywhere with an outdoor shop. An alcohol stove burns denatured alcohol, methylated spirits or pharmacy ethanol, all of which are sold in ordinary shops nearly everywhere — slower and less controllable, but effectively immune to this entire problem.
The compact cookware picks cover what to pair with either.
What to do with what is left
You cannot fly home with a part-used canister any more than you could fly out with one. Leave it with the campsite, a hostel or the shop you bought it from; most will take it, and many keep a shelf of half-full canisters for exactly this reason. Do not pack it hopefully and do not put a pressurised canister in general waste.
Buying the smallest canister that covers the trip is the cheapest fix — a 100 g canister boils enough water for a long weekend, and leaving a nearly empty one behind stings a good deal less.
Verdict
Check the valve system your destination sells before you fly, not after. With an outdoor shop nearby, a threaded stove is simple and reliable. Without one, plan on an adapter or take an alcohol stove and stop thinking about it. The failure mode here is not inconvenience — it is arriving with a stove you cannot use and no obvious way to fix it.
