A quick getaway - by air (6)

I believe the answer is:

flight

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This clue might be a double definition.

'a quick getaway' is the first definition.
'flight' can be an answer for 'getaway' (thesaurus). I am unsure of the 'a quick' bit.

'air' is the second definition.
(I know that flight is a type of air)

'by' is the link.

Can you help me to learn more?

(Other definitions for flight that I've seen before include "Journey by air" , "Set of stairs" , "Movement through the air" , "Fleeing" , "Air force unit; running away" .)

I've seen this clue in The Globe and Mail.

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