Cheap Flights from Kalispell to London Heathrow

Compare Kalispell to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

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Flight deals from Kalispell to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Kalispell Airport to London Heathrow Airport? If you want to travel next month, return fares start from R 23,357. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Kalispell to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kalispell to London Heathrow flights are currently cheapest in September.

Kalispell to London: Flight information

The things to know before you go.
Cheapest flight foundR 6,230
Cheapest month to flySeptember

Finding cheap flights from Kalispell to London Heathrow: Frequently asked questions

The best price we found for a return flight from Kalispell to London Heathrow is R 14,664. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Kalispell to London Heathrow. But we found flights with one or more stops from R 14,664.
As of June 2026, there are no flights flying from Kalispell to London Heathrow.
The cheapest month to fly from Kalispell to London Heathrow is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kalispell Airport to London Heathrow Airport on Tuesday, 6 October 2026.
No airlines currently offer direct flights between Kalispell Airport and London Heathrow Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to London Heathrow.

Travelling from Kalispell Airport (FCA) to London Heathrow Airport (LHR): what you need to know

  • London's timezone is UTC+0, making London seven hours ahead of Kalispell.

  • Give yourself plenty of time to make your FCA to LHR flight. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer queues in popular months such as August. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a smart move.

  • Consider adding a stopover when booking your ticket from Kalispell Airport to London Heathrow Airport. Simply deselect 'Direct flights only' to break up your trip, or enjoy a detour to a new and interesting place. Check out these options between FCA and LHR:

    • Chicago O'Hare International Airport

    • Dallas Fort Worth International Airport

    • Denver International Airport

How to find the cheapest flights from Kalispell Airport (FCA) to London Heathrow Airport (LHR)

  • At the moment, R 6,230 is the cheapest price we've found for a one-way Kalispell Airport to London Heathrow Airport flight. The best price for a return plane ticket is R 14,664. Keep in mind that fares could change due to demand when booking.

  • Don't leave things to the last moment. You're more likely to get cheap tickets from FCA to LHR if you book in advance. Airlines often offer some fantastic early bird deals.

  • The 'Whole month' search function shows you the cheapest flights from Kalispell Airport to London Heathrow Airport throughout the entire month. It's a good way to find a bargain if your travel plans are flexible.

  • Picking up cheap flights from FCA to LHR is easy with Price Alerts. Simply create one of these automatic alerts and we'll let you know when fares go down.

  • Find the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Kalispell Airport to London Heathrow Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and number of stops.

Handy information about Kalispell Airport (FCA)

  • FCA is located at 4170 Highway 2 East.

  • Kalispell Airport scores high marks for on-time performance. 83% of flights that take off from FCA reach their destination without delay.

  • To reach Kalispell Airport from central Kalispell, it'll take around 15 minutes by car. This depends on traffic, however. It's approximately 11 kilometres from the airport to the city centre.

  • Expect a trip time of around 30 minutes when using public transport.

  • Have an early flight from Kalispell Airport to London Heathrow Airport? Avoid the last-minute rush to the terminal (and catch some extra z's) by picking one of these hotels close to FCA:

Arriving at London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • From London Heathrow Airport, London is approximately 24 kilometres away. It takes around 45 minutes to reach the centre driving.

  • Travelling on public transport takes about 25 minutes.

When to fly to London Heathrow Airport (LHR)

  • July is the most popular month for flights from Kalispell Airport to London Heathrow Airport. To steer clear of the crowds, travel to London in March.

  • Lock in your flight from Kalispell Airport to London Heathrow Airport for July if you'd like to explore London during its warmest month. You can expect temperatures of between 11ºC (52ºF) and 26ºC (79ºF).

  • January sees average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Search for cheap tickets from FCA to LHR sometime then if you'd rather travel in cooler conditions.

Explore more of the United Kingdom

  • You've seen London, now it's time to explore more of the United Kingdom. Journey about 257 kilometres north-west to Manchester to tick off its top sights. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, there's plenty to keep you on the go.

  • Birmingham is another essential stop in the United Kingdom and is around 161 kilometres north-west of London. No journey is complete without dropping by Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.