Jet A and Jet A-1 are close cousins, and buyers new to aviation fuel often use the names interchangeably. For most international transactions the difference is small but real — and specifying the wrong one can cause problems at delivery.
The core difference: freeze point
Both are kerosene-grade turbine fuels, but they differ mainly in freeze point. Jet A-1 has a maximum freeze point of −47°C; Jet A allows a higher maximum of about −40°C. The lower freeze point of Jet A-1 makes it the standard for long-haul international aviation, where fuel can get very cold at altitude.
| Attribute | Jet A-1 | Jet A |
|---|---|---|
| Freeze point | max −47°C | max −40°C |
| Primary use region | International (worldwide) | Mainly United States |
| Specification | DEF STAN 91-091 / ASTM D1655 | ASTM D1655 |
| Flash point | min 38°C | min 38°C |
Which one should you buy?
If you are supplying international operations or any market outside the US, specify Jet A-1. It is the globally accepted grade and what most buyers mean when they say "jet fuel". LinkPort supplies Jet A-1; see the Jet A1 product page or read what is Jet A1 fuel for the full specification.
Why the distinction matters commercially
Because the two are so similar, a careless offer can conflate them. Always confirm the exact grade in the contract and require a batch certificate plus independent inspection so there is no ambiguity at delivery.
Frequently asked questions
Is Jet A-1 better than Jet A?
Neither is "better" — they suit different regions. Jet A-1’s lower freeze point makes it the international standard; Jet A is common domestically in the US.
Which does LinkPort supply?
Jet A-1, to DEF STAN 91-091 / ASTM D1655, CIF or FOB. Enquire via the contact page.