Turkish Airlines and British Airways fly out of London Heathrow three times a day everyday into Istanbul's Attaturk Airport.
There are flights from Stansted everyday with Turkish Airlines.
Pegasus Airlines fly from Stansted six times a week into Sabiha Gokcen.
Easyet fly from both Luton and Gatwick into Sabiha Gokcen.
For the latest fares please contact Diplomat Travel or the Airlines directly.