Daybreak created stir during plane trip (5,5)
I believe the answer is:
first light
'daybreak' is the definition.
(synonyms)
'created stir during plane trip' is the wordplay.
'created' indicates an anagram (I've seen 'creating' mean this).
'during' means one lot of letters goes inside another.
'plane trip' becomes 'flight' (I've seen this in another clue).
'stir' with letters rearranged gives 'irst'.
'irst' going into 'flight' is 'FIRST LIGHT'.
(Other definitions for first light that I've seen before include "start of day" , "early in the day" , "Glimmering" , "time for dawn chorus" , "Instructions for enjoying cigarette" .)