Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Heathrow to Idaho Falls, across the seven airlines that offer this route. We've found that 10 / Mar / 2025 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.
Delta Air Lines is the most popular airline that flies from London Heathrow to Idaho Falls. But it's still worth looking at other options, as there are 33 flights to Idaho Falls every week. If you want to broaden your search, look at flights departing from other airports.
Generally speaking, the flight from London Heathrow to Idaho Falls takes around 17 hrs 35 mins. The fastest flight takes 14 hrs 35 mins to cover the 7583 km distance. You can view all flight times yourself in the results list.
If you need somewhere to stay for your trip to the USA, take a look at our accommodation options.
