Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Kalispell to London from $616

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
6:14 am - 9:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
20h 26m1 stop Denver Intl
United Airlines Logo
6:35 am - 9:30 pmLHR  London Heathrow-FCA Kalispell Glacier Park
21h 55m2 stops Munich Franz Josef Strauss Denver Intl
$877United Airlines
Sun, Nov 15 - Thu, Dec 3
United Airlines Logo
2:36 pm - 9:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
12h 04m1 stop Denver Intl
United Airlines Logo
6:35 am - 9:30 pmLHR  London Heathrow-FCA Kalispell Glacier Park
21h 55m2 stops Munich Franz Josef Strauss Denver Intl
$877United Airlines
Mon, Nov 16 - Thu, Dec 3
United Airlines Logo
6:14 am - 9:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
20h 26m1 stop Denver Intl
United Airlines Logo
6:35 am - 9:30 pmLHR  London Heathrow-FCA Kalispell Glacier Park
21h 55m2 stops Munich Franz Josef Strauss Denver Intl
$877United Airlines
Tue, Nov 17 - Fri, Dec 4
United Airlines Logo
6:14 am - 9:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
20h 26m1 stop Denver Intl
United Airlines Logo
6:35 am - 9:30 pmLHR  London Heathrow-FCA Kalispell Glacier Park
21h 55m2 stops Munich Franz Josef Strauss Denver Intl
$877United Airlines
Mon, Nov 16 - Fri, Dec 4
United Airlines Logo
2:36 pm - 9:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
12h 04m1 stop Denver Intl
United Airlines Logo
6:35 am - 9:30 pmLHR  London Heathrow-FCA Kalispell Glacier Park
21h 55m2 stops Munich Franz Josef Strauss Denver Intl
$877United Airlines
Sun, Nov 15 - Fri, Dec 4
United Airlines Logo
6:14 am - 9:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
20h 26m1 stop Denver Intl
United Airlines Logo
6:35 am - 9:30 pmLHR  London Heathrow-FCA Kalispell Glacier Park
21h 55m2 stops Munich Franz Josef Strauss Denver Intl
$877United Airlines
Tue, Nov 17 - Thu, Dec 3
Multiple Airlines Logo
12:25 pm - 1:45 pmFCA  Kalispell Glacier Park-LHR London Heathrow
18h 20m2 stops Salt Lake City Paris Charles de Gaulle
Multiple Airlines Logo
8:25 pm - 5:35 pmLHR  London Heathrow-FCA Kalispell Glacier Park
28h 10m2 stops Amsterdam Schiphol Salt Lake City
$882Multiple Airlines
Wed, Nov 18 - Wed, Dec 2
Delta Logo
5:15 am - 10:40 amFCA  Kalispell Glacier Park-LHR London Heathrow
22h 25m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
11:45 am - 2:40 pmLHR  London Heathrow-FCA Kalispell Glacier Park
33h 55m2 stops Amsterdam Schiphol Minneapolis St Paul
$887Delta
Sun, Nov 15 - Fri, Dec 4
Delta Logo
5:15 am - 11:35 amFCA  Kalispell Glacier Park-LHR London Heathrow
23h 20m2 stops Salt Lake City Los Angeles
Delta Logo
11:45 am - 2:40 pmLHR  London Heathrow-FCA Kalispell Glacier Park
33h 55m2 stops Amsterdam Schiphol Minneapolis St Paul
$887Delta
Mon, Nov 16 - Fri, Dec 4
Delta Logo
5:15 am - 11:35 amFCA  Kalispell Glacier Park-LHR London Heathrow
23h 20m2 stops Salt Lake City Los Angeles
Delta Logo
11:45 am - 2:40 pmLHR  London Heathrow-FCA Kalispell Glacier Park
33h 55m2 stops Amsterdam Schiphol Minneapolis St Paul
$887Delta
Tue, Nov 17 - Fri, Dec 4

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Kalispell to London Heathrow Airport

Our best United Airlines deals on Kalispell to London Heathrow Airport flight tickets
United Airlines
Nov 15
FCA6:14 amKalispell Glacier Park
20h 26m
1 stop
LHR9:40 amLondon Heathrow
Dec 3
LHR6:35 amLondon Heathrow
21h 55m
2 stops
FCA9:30 pmKalispell Glacier Park
$877
United Airlines
Nov 15
FCA2:36 pmKalispell Glacier Park
12h 04m
1 stop
LHR9:40 amLondon Heathrow
Dec 2
LHR4:40 pmLondon Heathrow
35h 50m
2 stops
FCA9:30 pmKalispell Glacier Park
$888
United Airlines
Dec 6
FCA2:29 pmKalispell Glacier Park
12h 11m
1 stop
LHR9:40 amLondon Heathrow
Dec 8
LHR6:00 pmLondon Heathrow
34h 30m
2 stops
FCA9:30 pmKalispell Glacier Park
$891

Delta flights from Kalispell to London Heathrow Airport

Our best Delta deals on Kalispell to London Heathrow Airport flight tickets
Delta
Nov 15
FCA5:15 amKalispell Glacier Park
22h 25m
2 stops
LHR10:40 amLondon Heathrow
Dec 4
LHR11:45 amLondon Heathrow
33h 55m
2 stops
FCA2:40 pmKalispell Glacier Park
$887
Delta
Nov 15
FCA5:15 amKalispell Glacier Park
23h 20m
2 stops
LHR11:35 amLondon Heathrow
Dec 2
LHR2:45 pmLondon Heathrow
33h 50m
2 stops
FCA5:35 pmKalispell Glacier Park
$901
Delta
Nov 21
FCA3:35 pmKalispell Glacier Park
32h 30m
1 stop
LHR7:05 amLondon Heathrow
Dec 4
LHR11:45 amLondon Heathrow
33h 55m
2 stops
FCA2:40 pmKalispell Glacier Park
$934

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 August 17, 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 Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sun 11/15

6:14 am-9:40 am

1 stop20h 26m

London Heathrow

Thu 12/3

6:35 am-9:30 pm

2 stops21h 55m

$877
Quickest round-trip

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Mon 11/16

2:36 pm-9:40 am

1 stop12h 04m

London Heathrow

Thu 12/3

6:35 am-9:30 pm

2 stops21h 55m

$877

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 11/17

6:14 am-9:40 am

1 stop20h 26m

London Heathrow

Fri 12/4

6:35 am-9:30 pm

2 stops21h 55m

$877

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Mon 11/16

6:14 am-9:40 am

1 stop20h 26m

London Heathrow

Fri 12/4

6:35 am-9:30 pm

2 stops21h 55m

$877

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sun 11/15

2:36 pm-9:40 am

1 stop12h 04m

London Heathrow

Fri 12/4

6:35 am-9:30 pm

2 stops21h 55m

$877

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 11/17

6:14 am-9:40 am

1 stop20h 26m

London Heathrow

Thu 12/3

6:35 am-9:30 pm

2 stops21h 55m

$877

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Wed 11/18

12:25 pm-1:45 pm

2 stops18h 20m

London Heathrow

Wed 12/2

8:25 pm-5:35 pm

2 stops28h 10m

$882

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sun 11/15

5:15 am-10:40 am

2 stops22h 25m

London Heathrow

Fri 12/4

11:45 am-2:40 pm

2 stops33h 55m

$887

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Mon 11/16

5:15 am-11:35 am

2 stops23h 20m

London Heathrow

Fri 12/4

11:45 am-2:40 pm

2 stops33h 55m

$887

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 11/17

5:15 am-11:35 am

2 stops23h 20m

London Heathrow

Fri 12/4

11:45 am-2:40 pm

2 stops33h 55m

$887

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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 6% 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

Best Price Found

$616

Fastest flight time

12h 11m

Direct flights

None
The best one-way flight to London Heathrow Airport from Kalispell in the past 72 hours is $616. The best round-trip flight deal from Kalispell to London Heathrow Airport found on momondo in the last 72 hours is $877.
The fastest flight from Kalispell to London Heathrow Airport takes 12h 11m
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

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 11m.

  • 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
10,106 reviews
Search United Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Stratford-upon-Avon
Wembley
Croydon
Dover
Stansted
Richmond
Kingston upon Thames
Harrow
Watford
Cobham
Slough
Uxbridge
Eastbourne
Worthing
Romford

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.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 9/16
Wed 9/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Gatwick Airportfrom $387
Flights to London Stansted Airportfrom $416
Flights to London City Airportfrom $741
Flights to London Luton Airportfrom $487
Flights to Glasgow Intl Airportfrom $552
Flights to Belfast Intl Airportfrom $634
Flights to London Southend Airportfrom $637
Flights to Belfast City Airportfrom $638