We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Boise. You can choose from five airlines. At the moment, 20 / Sep / 2025 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
British Airways is the most popular airline that flies from London Heathrow to Boise. But it's still worth looking at other options, as there are 111 flights to Boise every week. If you want to broaden your search, look at flights departing from other airports.
Your flight from London Heathrow to Boise will take at least 12 hrs 55 mins. On average, it takes 13 hrs 45 mins to fly the 7783 km distance. Take a look at flight times to see which one works best for you.
The cheapest month to fly to Boise is October, while December is when the prices of flights, hotels and car hire will be at their highest. If you need somewhere to stay for your trip to the USA, take a look at our accommodation options.
