The contributors of Flight-Report published 22 reviews on 2 airlines on the route London - Heathrow (LHR) → Madrid - Adolfo Suarez (MAD). The airline with the best average rating is British Airways with 7.3/10. The average flight time is 2 hours and 20 minutes.
Airlines on this route are:
Frequent travelers recommend "British Airways Galleries First " at LHR for comfort and meals/catering.