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Cheap flights from Kalispell to London from $611

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 12/18. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Kalispell to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:17 pm - 2:10 pm
FCA
-
LHR
14h 53m
1 stop
United Airlines Logo
6:55 am - 9:36 pm
LHR
-
FCA
21h 41m
2 stops
$874United Airlines
Mon, Oct 12 - Tue, Oct 20
United Airlines Logo
2:30 pm - 5:05 pm
FCA
-
LHR
19h 35m
2 stops
United Airlines Logo
7:25 am - 9:36 pm
LHR
-
FCA
21h 11m
2 stops
$882United Airlines
Mon, Oct 12 - Tue, Oct 20
Alaska Airlines Logo
2:05 pm - 12:20 pm
FCA
-
LHR
15h 15m
1 stop
Alaska Airlines Logo
2:45 pm - 11:59 pm
LHR
-
FCA
16h 14m
1 stop
$884Alaska Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 9:40 am
FCA
-
LHR
20h 25m
1 stop
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$886United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 9:40 am
FCA
-
LHR
20h 25m
1 stop
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$887United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 7:55 am
FCA
-
LHR
18h 40m
2 stops
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$891United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 7:55 am
FCA
-
LHR
18h 40m
2 stops
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$892United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
5:12 pm - 12:35 pm
FCA
-
LHR
12h 23m
1 stop
United Airlines Logo
7:30 am - 9:36 pm
LHR
-
FCA
21h 06m
2 stops
$934United Airlines
Sun, Oct 11 - Sun, Oct 18
United Airlines Logo
6:05 am - 11:35 am
FCA
-
LHR
22h 30m
2 stops
United Airlines Logo
7:30 am - 9:36 pm
LHR
-
FCA
21h 06m
2 stops
$938United Airlines
Sun, Oct 11 - Sun, Oct 18
United Airlines Logo
10:45 am - 12:25 pm
FCA
-
LHR
18h 40m
1 stop
United Airlines Logo
5:50 pm - 6:54 pm
LHR
-
FCA
32h 04m
2 stops
$945United Airlines
Tue, Aug 11 - Tue, Aug 18

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KLM flights from Kalispell to London Heathrow Airport

Our best KLM deals on Kalispell to London Heathrow Airport flight tickets
KLM
Sep 15
FCA12:40 pmKalispell Glacier Park
15h 20m
1 stop
LHR11:00 amLondon Heathrow
Sep 18
LHR12:25 pmLondon Heathrow
18h 18m
1 stop
FCA11:43 pmKalispell Glacier Park
$1,423
KLM
Jul 12
FCA3:33 pmKalispell Glacier Park
14h 32m
1 stop
LHR1:05 pmLondon Heathrow
Jul 18
LHR10:55 amLondon Heathrow
13h 34m
1 stop
FCA5:29 pmKalispell Glacier Park
$1,895

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 12
FCA4:17 pmKalispell Glacier Park
14h 53m
1 stop
LHR2:10 pmLondon Heathrow
Oct 20
LHR6:55 amLondon Heathrow
21h 41m
2 stops
FCA9:36 pmKalispell Glacier Park
$874
United Airlines
Oct 12
FCA2:30 pmKalispell Glacier Park
19h 35m
2 stops
LHR5:05 pmLondon Heathrow
Oct 20
LHR7:25 amLondon Heathrow
21h 11m
2 stops
FCA9:36 pmKalispell Glacier Park
$882
United Airlines
Nov 3
FCA6:15 amKalispell Glacier Park
20h 25m
1 stop
LHR9:40 amLondon Heathrow
Nov 5
LHR6:00 pmLondon Heathrow
34h 42m
2 stops
FCA9:42 pmKalispell Glacier Park
$886

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 July 2, 2026.
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

Cheapest round-trip

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 10/12

4:17 pm-2:10 pm

1 stop14h 53m

London Heathrow

Tue 10/20

6:55 am-9:36 pm

2 stops21h 41m

$874

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 10/12

2:30 pm-5:05 pm

2 stops19h 35m

London Heathrow

Tue 10/20

7:25 am-9:36 pm

2 stops21h 11m

$882
Quickest round-trip

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/3

2:05 pm-12:20 pm

1 stop15h 15m

London Heathrow

Thu 11/5

2:45 pm-11:59 pm

1 stop16h 14m

$884

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/3

6:15 am-9:40 am

1 stop20h 25m

London Heathrow

Thu 11/5

6:00 pm-9:42 pm

2 stops34h 42m

$886

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/3

6:15 am-9:40 am

1 stop20h 25m

London Heathrow

Thu 11/5

6:00 pm-9:42 pm

2 stops34h 42m

$887

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/3

6:15 am-7:55 am

2 stops18h 40m

London Heathrow

Thu 11/5

6:00 pm-9:42 pm

2 stops34h 42m

$891

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/3

6:15 am-7:55 am

2 stops18h 40m

London Heathrow

Thu 11/5

6:00 pm-9:42 pm

2 stops34h 42m

$892

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 10/11

5:12 pm-12:35 pm

1 stop12h 23m

London Heathrow

Sun 10/18

7:30 am-9:36 pm

2 stops21h 06m

$934

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 10/11

6:05 am-11:35 am

2 stops22h 30m

London Heathrow

Sun 10/18

7:30 am-9:36 pm

2 stops21h 06m

$938

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 8/11

10:45 am-12:25 pm

1 stop18h 40m

London Heathrow

Tue 8/18

5:50 pm-6:54 pm

2 stops32h 04m

$945

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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2

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

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

You could potentially save up to 31% 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

Fastest flight time

12h 09m

Direct flights

None
The fastest flight from Kalispell to London Heathrow Airport takes 12h 09m
There are no direct flights from Kalispell to London Heathrow Airport. There are no popular flight routes from Kalispell to London Heathrow Airport.
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Frequently asked questions about flying from Kalispell to London Heathrow Airport

  • 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 09m.

  • 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 $733Free CancellationRating
7.4
9,926 reviews
Search United Airlines flights

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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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