Toronto (YYZ)London Heathrow (LHR)
- non-stop flights:
- 6–7 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $521number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
3–4 3–4 3 3–4 3–4 3–4 3–4 
2 2 2 2 2 2 2 
1 1 1 1 1 1 1 Montréal-Pierre Elliott Trudeau International (YUL)London Heathrow (LHR)
- non-stop flights:
- 2–4 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $647number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1–3 1–2 1–3 1 1–2 1–2 1–3 
1 1 1 1 1 1 1 Calgary (YYC)London Heathrow (LHR)
- non-stop flights:
- 3 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $573number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1 
1 1 1 1 1 1 1