I would say:
He is flying in from London that day. -- (I would give his departure point).
I think flying in is OK too, again I would probably say the departure point eg
He is flying down from Whangarei that day.
I have always understood this to mean pay day.
Groover save the day by flying down with his flying shoes and grabing Percy by thr shirt and grabing Annabeth by the arm
Bats are like flying rats. They sleep in the day upside down!
"Top of the morning to you" is an Irish saying that means " I wish the best of the morning to you." or to have a good morning. The proper response would be "and the rest of the day to you".
well some day or year or month there will be a box full of them saying free grab one wear nothing dance you will be flying
The time of day were no flags were flying was noon
==Flying ace== A military aviator who has shot down five or more enemy planes is called a "flying ace" or "fighter ace." One of the most famous flying aces in history was the "Red Baron" — Manfred von Richthofen. There may be a special designation for someone who has done it in a single day — it has been done.
Flying from the US to Europe, you could arrive the same day or the next day. Flying from Europe to the US, you could arrive the same day or the previous day.
the flying dragon eats and sleeps during the day x
Flying cars will be invented the day flying pigs are :)
A way of saying "Have a Nice day in Norwegian" can be "Ha en god dag", most often shortened down to "Ha det!"
The old saying is that cats sleep with their heads upside down the day before a rain. It is not always true, cats just sleep funny sometimes.