If it takes 3 hours say to drive door to door From home to office if you live in NCL and work in MAN. To fly you have to consider the time it takes (as pax) to fly the route
Home - Apt = 20 - 35 mins
Check in = 45 mins
Flight time = 40 - 45 mins (I'm guessing)
Apt to office = 45 mins
Say 2 & 1/2 hours to fly door to door.
Not worth the extra cost to save 30 mins assuming flights on time.
------------------
-------------------------
You fly em we'll fill em!