The contributors of Flight-Report published 7 reviews on 2 airlines on the route London - Heathrow (LHR) → Toronto - Lester B. Pearson (YYZ). The airline with the best average rating is Air Canada with 7.5/10. The average flight time is 7 hours and 42 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 Toronto : London - Gatwick (LGW)