We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Kalispell. You can choose from two airlines. At the moment, 10 / Sep / 2025 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
There are 20 flights from London Heathrow to or via Kalispell every week. Out of the two available airlines, the most popular ones are British Airways & Virgin Atlantic. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.
Your flight from London Heathrow to Kalispell will take at least 12 hrs 50 mins. On average, it takes 13 hrs 10 mins to fly the 7272 km distance. Take a look at flight times to see which one works best for you.
You can also search by month, which will reveal the cheapest time of the week to fly.
