Go through your results for flights to Leon in Spain with Netflights. Although British Airways usually has the best prices, it's best to double check what's available for your travel dates.
If you don’t have set dates for when you want to fly to Leon, try searching by month – that way, you can compare airfares throughout the year.
So, if the flights to Leon don't work for you, you could always try searching for flights to other airports in Spain.
You can also broaden your search by looking at more than one departure airport. Have a look around – you might be able to save by flying from a different airport or city.