The most common and most likely answer to this crossword clue is the 9 letter word IN-FLIGHT
I've seen this crossword clue in The Guardian
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More clues leading to the result IN-FLIGHT
Buddy explains!
The straight part
We know that "Running away/uch elevated entertainment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case running away/uch elevated entertainment = in-flight.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does IN-FLIGHT mean?
IN-FLIGHT adjective- Occurring, or provided for use during a flight