Originally Posted by
obduro
Turkish Airlines seem to be having some sort of J fare sale from London to Asia at the moment. For a LON departure these prices are OK and the fare has some handy, relaxed restrictions including a 7 day advance purchase requirement for those travelling in the short term.
If you welcome a break in Istanbul, take it on the outward journey and save a significant amount in APD (£26 v £150).
PS Gatwick is usually cheaper than Heathrow. And if this fare is like earlier ones, UK airports other than LON are not included.