The contributors of Flight-Report published 7 reviews on 2 airlines on the route London - Heathrow (LHR) → Istanbul - Atatürk (closed) (ISL). The airline with the best average rating is Turkish Airlines with 8.1/10. The average flight time is 3 hours and 52 minutes.
Airlines on this route are:
Frequent travelers recommend "Singapore Airlines Silverkris Lounge" at LHR for comfort and services.
London has an another airport to go to Istanbul : London - Gatwick (LGW)