What is the correct spelling for canceled?

Answer 1

The one L version cancelation is sometimes used in the US. The two L variant cancellation is usually used in the UK. This is because US English abandoned the doubling of the final L on some words, such as travel and cancel, when they add a suffix such as -ed, -ing, or -ation. Some spell checkers will not accept both versions of these words.

Answer 2

Canceled is the correct US spelling. In the UK, most use the double L variant cancelled.