For the cheapest flights to Istanbul book 52 days before departure.
The most popular airlines on the route London - Istanbul: AtlasGobal (KK), Turkish Airlines (TK), Pegasus (PC).
The cheapest flights are on the route Gatwick (LGW) - Sabiha Gokcen (SAW).
Direct flights last about 3h 40min.
Direct flights are available 7 days a week.
Direct flights: AtlasGobal (KK), Turkish Airlines (TK), British Airways (BA).