If you're looking to fly from London Heathrow to San Antonio USA, you might like to know that 11 / Mar / 2026 currently has the cheapest flights. At the moment, there are six airlines flying to San Antonio USA. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to San Antonio USA.
Lufthansa is the most popular airline that flies from London Heathrow to San Antonio USA. But it's still worth looking at other options, as there are 148 flights to San Antonio USA every week. If you want to broaden your search, look at flights departing from other airports.
Your flight from London Heathrow to San Antonio USA will take at least 13 hrs. On average, it takes 14 hrs 5 mins to fly the 8005 km distance. Take a look at flight times to see which one works best for you.
January is normally the cheapest month to fly to San Antonio USA, but it’s important to try different options when you search. Searching by month, for instance, will show you the best time of the week to fly. December is always the most expensive time to fly but, if you check regularly and book early, you have a better chance of getting a good deal.
