Hi Carol,
The provisional flight times from Gatwick airport are as follows.
You will depart from Gatwick at 06.15hrs and arrive in Mykonos at 12.05hrs. On your return journey you will depart from Mykonos airport at 13.10hrs and arrive back in London at 15.00hrs.
There are 6 travellers booked on this date at the moment, 5 of which are female and 1 is male. The ages range from the early-60's to the early-70's.
Kindest regards,
Monty