Depending on route, aircraft flown (speed) and wind... between 10hours 30 and 11h 30min. As most wind is East West and your route will be nearly 90 degrees to that if you bank on 11 hours you wont be far out.
I have flown myself from Heathrow to Johannesburg, with SAA, in 11 hours nonstop. I do not count the return trip because I made several stopovers in East Africa.
The flight time from London Heathrow to JoBurg Int, South Africa is approximately 12 hours.
flight time from heathrow to Singapore
the flight time from Paris to heathrow is 50 min to one houre
The flight time from Oslo, Norway to London Heathrow Airport is about 1 hour, 27 minutes.
The average flight time from London Heathrow Airport to Toulouse, France is 1 hour, 6 minutes.
About an hour.
The average flight time from London Heathrow Airport to Philadelphia International Airport is 7 hours, 5 minutes.
The flight time is 6 hours.
The flight time is 8 hours, 1 minute.
The average flight time from London Heathrow Airport to Lima, Peru is 12 hours, 36 minutes.
From London Heathrow to Cancun, Mexico flight time around 8 hours
7 hours
12 Hours