£243 Cheap Flights from Kalispell (FCA) to London (LHR)

View £243 flight on Tue, 15 Sept 2026Opens in a new window

Popular airlines from Glacier Park Intl. Airport (FCA) to Heathrow Airport (LHR)

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Cheap Flights from Kalispell (FCA) to London (LHR)

Prices were available within the past 7 days and start at £243 for one-way flights and £708 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Wed, 5 Aug - Wed, 19 Aug
FCA
Kalispell
LHR
London
£708 Return, found 2 days ago
£708
Return
found 2 days ago
Select Virgin Atlantic flight, departing Wed, 5 Aug from Kalispell to London, returning Wed, 19 Aug, priced at £708 found 2 days ago
KLM
Wed, 5 Aug - Wed, 19 Aug
FCA
Kalispell
LHR
London
£708 Return, found 2 days ago
£708
Return
found 2 days ago
Select KLM flight, departing Wed, 5 Aug from Kalispell to London, returning Wed, 19 Aug, priced at £708 found 2 days ago
Virgin Atlantic
Wed, 5 Aug - Wed, 19 Aug
FCA
Kalispell
LHR
London
£729 Return, found 2 days ago
£729
Return
found 2 days ago
Select Virgin Atlantic flight, departing Wed, 5 Aug from Kalispell to London, returning Wed, 19 Aug, priced at £729 found 2 days ago
Virgin Atlantic
Wed, 5 Aug - Wed, 19 Aug
FCA
Kalispell
LHR
London
£784 Return, found 2 days ago
£784
Return
found 2 days ago
Select Virgin Atlantic flight, departing Wed, 5 Aug from Kalispell to London, returning Wed, 19 Aug, priced at £784 found 2 days ago
Delta
Mon, 27 Jul - Sun, 16 Aug
FCA
Kalispell
LHR
London
£790 Return, found 1 day ago
£790
Return
found 1 day ago
Select Delta flight, departing Mon, 27 Jul from Kalispell to London, returning Sun, 16 Aug, priced at £790 found 1 day ago
United
Mon, 27 Jul - Sun, 16 Aug
FCA
Kalispell
LHR
London
£790 Return, found 1 day ago
£790
Return
found 1 day ago
Select United flight, departing Mon, 27 Jul from Kalispell to London, returning Sun, 16 Aug, priced at £790 found 1 day ago
Air France
Mon, 27 Jul - Sun, 16 Aug
FCA
Kalispell
LHR
London
£790 Return, found 1 day ago
£790
Return
found 1 day ago
Select Air France flight, departing Mon, 27 Jul from Kalispell to London, returning Sun, 16 Aug, priced at £790 found 1 day ago
American Airlines
Mon, 27 Jul - Sun, 16 Aug
FCA
Kalispell
LHR
London
£795 Return, found 1 day ago
£795
Return
found 1 day ago
Select American Airlines flight, departing Mon, 27 Jul from Kalispell to London, returning Sun, 16 Aug, priced at £795 found 1 day ago
KLM
Wed, 5 Aug - Wed, 19 Aug
FCA
Kalispell
LHR
London
£805 Return, found 2 days ago
£805
Return
found 2 days ago
Select KLM flight, departing Wed, 5 Aug from Kalispell to London, returning Wed, 19 Aug, priced at £805 found 2 days ago
Delta
Mon, 27 Jul - Sun, 16 Aug
FCA
Kalispell
LHR
London
£810 Return, found 1 day ago
£810
Return
found 1 day ago
Select Delta flight, departing Mon, 27 Jul from Kalispell to London, returning Sun, 16 Aug, priced at £810 found 1 day ago

Frequently asked questions

How much does a flight from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) cost?
One-way flights typically cost between £1,376 and £4,281 and return flights often range between £1,376 and £4,281. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
How do I find cheap flights from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
To find a cheap flight from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
There are approximately 14 connecting flights per day from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow). Some common connection points include Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), and Salt Lake City Intl. (SLC).
What is the earliest flight from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
The earliest flight from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) typically departs at approximately 5:00 AM local time, operated by Delta. This is a seasonal service active in December. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
You'll find the most flights from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) on a Sunday, with around 21 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, Alaska Airlines, and United Airlines. Flight options are notably more on Sundays compared to other days of the week.
What are the most popular departure times for flights from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from Kalispell, MT (FCA-Glacier Park Intl.) to London Heathrow (LHR) are in the afternoon, from 12pm to 3pm. Approximately 42% of passengers prefer this time window. Many major carriers, including United Airlines, Delta and Virgin Atlantic, offer flights during this window. These times work well because you can have a relaxed morning before your flight, and you'll arrive at your destination in the evening, ready to settle in.
How long does it take to fly from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
Flights from FCA to LHR with one stop typically take around 12 hours 20 minutes, covering approximately 4,516 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
Select the "Business class" and "First class" filters when looking for FCA to LHR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Glacier Park Intl. (FCA)?
From Glacier Park Intl. (FCA), you can fly directly into Heathrow (LHR) to reach London. Some flights may connect through major hubs like Salt Lake City Intl. (SLC), Denver Intl. (DEN), O'Hare Intl. (ORD) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) flight and hotel package?
Securing a Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow)?
If you booked your Kalispell, MT (FCA-Glacier Park Intl.) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Glacier Park Intl.
Destination airport
Heathrow
Airlines serving
Air France, Alaska Airlines, American Airlines, British Airways, Delta, KLM, United, Virgin Atlantic
Return price
£708
Distance
7224 km

Book with confidence

Compare flights from Kalispell to London easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Kalispell to London. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Heathrow in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Glacier Park Intl. to Heathrow.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Glacier Park Intl. (FCA) to Heathrow (LHR)

The easiest way to view the best deals on flights from Kalispell to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Glacier Park Intl. to Heathrow start at just £708 and range up to £810.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Kalispell and London
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Kalispell to London flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Glacier Park Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Kalispell to London easily and book with confidence

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*Available to Expedia members.