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Cheap flights from Kalispell to London from $518

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kalispell to London departing on 3/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Kalispell to London

Cheap round-trip flights

KLM Logo
12:06 pm - 10:00 amFCA-LHR
14h 54m1 stop
KLM Logo
8:25 pm - 5:26 pmLHR-FCA
28h 01m2 stops
$728KLM
Find Deal
Wed, Nov 12 - Tue, Nov 18
KLM Logo
12:06 pm - 11:40 amFCA-LHR
16h 34m2 stops
KLM Logo
8:25 pm - 5:26 pmLHR-FCA
28h 01m2 stops
$732KLM
Find Deal
Wed, Nov 12 - Tue, Nov 18
Delta Logo
6:10 pm - 10:00 amFCA-LHR
32h 50m1 stop
Delta Logo
6:20 am - 5:26 pmLHR-FCA
18h 06m2 stops
$733Delta
Find Deal
Sun, Nov 2 - Wed, Nov 12
United Airlines Logo
2:31 pm - 9:40 amFCA-LHR
12h 09m1 stop
United Airlines Logo
6:00 pm - 9:33 pmLHR-FCA
33h 33m2 stops
$734United Airlines
Find Deal
Tue, Oct 21 - Thu, Oct 30
Delta Logo
12:06 pm - 10:00 amFCA-LHR
14h 54m1 stop
Delta Logo
5:35 pm - 5:26 pmLHR-FCA
30h 51m2 stops
$741Delta
Find Deal
Mon, Nov 17 - Mon, Nov 24
Delta Logo
6:06 pm - 6:20 amFCA-LHR
29h 14m2 stops
Delta Logo
5:35 pm - 5:26 pmLHR-FCA
30h 51m2 stops
$745Delta
Find Deal
Sat, Nov 15 - Mon, Nov 24
United Airlines Logo
2:31 pm - 9:40 amFCA-LHR
12h 09m1 stop
United Airlines Logo
11:35 am - 9:33 pmLHR-FCA
15h 58m1 stop
$750United Airlines
Find Deal
Tue, Oct 21 - Wed, Oct 29
United Airlines Logo
5:06 pm - 9:40 amFCA-LHR
33h 34m1 stop
United Airlines Logo
11:35 am - 9:33 pmLHR-FCA
15h 58m1 stop
$756United Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 28
United Airlines Logo
2:31 pm - 9:40 amFCA-LHR
12h 09m1 stop
United Airlines Logo
3:50 pm - 11:35 amLHR-FCA
26h 45m2 stops
$757United Airlines
Find Deal
Wed, Oct 15 - Thu, Oct 23
KLM Logo
12:11 pm - 10:00 amFCA-LHR
14h 49m1 stop
KLM Logo
8:25 pm - 5:25 pmLHR-FCA
28h 00m2 stops
$772KLM
Find Deal
Fri, Dec 5 - Wed, Dec 10

KLM flights from Kalispell to London Heathrow Airport

Our best KLM deals on Kalispell to London Heathrow Airport flight tickets
KLM
Nov 12
FCA12:06 pmKalispell Glacier Park
16h 34m
2 stops
LHR11:40 amLondon Heathrow
Nov 18
LHR8:25 pmLondon Heathrow
28h 01m
2 stops
FCA5:26 pmKalispell Glacier Park
$732
Find similar
KLM
Dec 5
FCA12:11 pmKalispell Glacier Park
14h 49m
1 stop
LHR10:00 amLondon Heathrow
Dec 10
LHR8:25 pmLondon Heathrow
28h 00m
2 stops
FCA5:25 pmKalispell Glacier Park
$772
Find similar
KLM
Jan 16
FCA11:59 amKalispell Glacier Park
15h 01m
1 stop
LHR10:00 amLondon Heathrow
Jan 22
LHR8:25 pmLondon Heathrow
28h 21m
2 stops
FCA5:46 pmKalispell Glacier Park
$780
Find similar

United Airlines flights from Kalispell to London Heathrow Airport

Our best United Airlines deals on Kalispell to London Heathrow Airport flight tickets
United Airlines
Oct 21
FCA2:31 pmKalispell Glacier Park
12h 09m
1 stop
LHR9:40 amLondon Heathrow
Oct 30
LHR6:00 pmLondon Heathrow
33h 33m
2 stops
FCA9:33 pmKalispell Glacier Park
$734
Find similar
United Airlines
Oct 21
FCA2:31 pmKalispell Glacier Park
12h 09m
1 stop
LHR9:40 amLondon Heathrow
Oct 28
LHR11:35 amLondon Heathrow
15h 58m
1 stop
FCA9:33 pmKalispell Glacier Park
$750
Find similar
United Airlines
Oct 18
FCA5:06 pmKalispell Glacier Park
33h 34m
1 stop
LHR9:40 amLondon Heathrow
Oct 28
LHR11:35 amLondon Heathrow
15h 58m
1 stop
FCA9:33 pmKalispell Glacier Park
$756
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Kalispell to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 26, 2025.
Use the filters below to find and compare flights from Kalispell to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 11/12

12:06 pm-10:00 am

1 stop14h 54m

London Heathrow

Tue 11/18

8:25 pm-5:26 pm

2 stops28h 01m

$728

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 11/12

12:06 pm-11:40 am

2 stops16h 34m

London Heathrow

Tue 11/18

8:25 pm-5:26 pm

2 stops28h 01m

$732

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 11/2

6:10 pm-10:00 am

1 stop32h 50m

London Heathrow

Wed 11/12

6:20 am-5:26 pm

2 stops18h 06m

$733

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 10/21

2:31 pm-9:40 am

1 stop12h 09m

London Heathrow

Thu 10/30

6:00 pm-9:33 pm

2 stops33h 33m

$734

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 11/17

12:06 pm-10:00 am

1 stop14h 54m

London Heathrow

Mon 11/24

5:35 pm-5:26 pm

2 stops30h 51m

$741

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 11/15

6:06 pm-6:20 am

2 stops29h 14m

London Heathrow

Mon 11/24

5:35 pm-5:26 pm

2 stops30h 51m

$745

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 10/21

2:31 pm-9:40 am

1 stop12h 09m

London Heathrow

Wed 10/29

11:35 am-9:33 pm

1 stop15h 58m

$750

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 10/18

5:06 pm-9:40 am

1 stop33h 34m

London Heathrow

Tue 10/28

11:35 am-9:33 pm

1 stop15h 58m

$756

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 10/15

2:31 pm-9:40 am

1 stop12h 09m

London Heathrow

Thu 10/23

3:50 pm-11:35 am

2 stops26h 45m

$757

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 12/5

12:11 pm-10:00 am

1 stop14h 49m

London Heathrow

Wed 12/10

8:25 pm-5:25 pm

2 stops28h 00m

$772

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Kalispell to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $647. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $1,084.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from Kalispell to London Heathrow Airport at noon for as low as $834. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $885.

Can stopping save me money on Kalispell to London Heathrow Airport flights?

You could potentially save up to 5% on your flight if you consider stops on a Kalispell to London Heathrow Airport flight.

When to book flights from Kalispell to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Kalispell to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kalispell to London Heathrow Airport (FCA to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kalispell to London Heathrow Airport

Direct flights

None
There are no direct flights from Kalispell to London Heathrow Airport. There are no popular flight routes from Kalispell to London Heathrow Airport.
Search flight deals

  • How far is Kalispell Glacier Park to London Heathrow by plane?

    A flight from Kalispell Glacier Park to London Heathrow will travel around 4520.2 mi. In terms of flight time, this usually takes a little over 12h 02m.

  • When did momondo last update prices for flights from Kalispell Glacier Park Airport to London Heathrow Airport?

    Prices for flights from Kalispell Glacier Park Airport to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from Kalispell Glacier Park Airport to London Heathrow Airport?

  • How old do you have to be to fly from Kalispell Glacier Park Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kalispell Glacier Park Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Kalispell to London Heathrow Airport?

Best airlines flying from Kalispell to London Heathrow Airport

Compare and see reviews for airlines that fly from Kalispell to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $754Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

Traveling to a place near London?

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Why use momondo?

Why should I use momondo to find a flight deal from Kalispell to London?

It is quick and easy to find Kalispell to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Kalispell to London with flexible booking policies on momondo?

Yes. All flights to London from Kalispell on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Kalispell to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Kalispell.

I’m not ready to book a flight from Kalispell to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Kalispell to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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