We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Leon. You can choose from zero airlines.
If you can't find a flight time that suits you, why not look at flying out from a different airport?
The distance between London Heathrow to Leon is 1064 km. You can see the various flight times in the results.
You can also search by month, which will reveal the cheapest time of the week to fly.