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$728+ Cheap flights from Kalispell (FCA) to London (LON)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LON
Mar 22 — Mar 291
Sun 3/22
Sun 3/29
1 adult, Economy
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Cheap flight deals from Kalispell to London

Cheapest flights from Kalispell to London
Explore the most affordable flight options available from Kalispell to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2026.

This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:33 pm
FCA
-
LHR
1 stop12h 07m
United Airlines
Tue 4/142:50 pm
LHR
-
FCA
1 stop13h 37m
United Airlines
Deal found 2/18$728
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:25 pm
FCA
-
LHR
1 stop12h 40m
American Airlines
Wed 8/264:25 pm
LHR
-
FCA
1 stop25h 35m
American Airlines
Deal found 2/19$846
This Alaska Airlines deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:00 pm
FCA
-
LHR
1 stop12h 05m
Alaska Airlines
Wed 8/265:00 pm
LHR
-
FCA
1 stop13h 59m
Alaska Airlines
Deal found 2/16$847
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:31 am
FCA
-
LHR
1 stop20h 09m
United Airlines
Wed 8/267:45 am
LHR
-
FCA
2 stops20h 45m
United Airlines
Deal found 2/19$850
This Delta deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:25 am
FCA
-
LHR
2 stops17h 55m
Delta
Wed 8/266:30 am
LHR
-
FCA
2 stops23h 32m
Delta
Deal found 2/16$852
This United Airlines deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:00 am
FCA
-
LHR
1 stop20h 40m
United Airlines
Sun 3/811:35 am
LHR
-
FCA
1 stop16h 22m
United Airlines
Deal found 2/18$861
This KAYAK deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:33 am
FCA
-
LGW
2 stops20h 07m
Multiple Airlines
Tue 5/261:00 pm
LGW
-
FCA
2 stops17h 58m
Multiple Airlines
Deal found 2/15$1,006
This Mytrip deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2010:53 am
FCA
-
LGW
2 stops17h 52m
Multiple Airlines
Sun 6/2810:00 am
LGW
-
FCA
2 stops30h 18m
Multiple Airlines
Deal found 2/16$2,059
This BusinessClass deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:53 pm
FCA
-
LGW
2 stops32h 02m
Multiple Airlines
Tue 2/2411:55 am
LGW
-
FCA
2 stops19h 02m
Multiple Airlines
Deal found 2/18$2,455
This Icelandair deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:15 am
FCA
-
LGW
2 stops21h 40m
Multiple Airlines
Mon 2/2311:55 am
LGW
-
FCA
2 stops19h 02m
Multiple Airlines
Deal found 2/15$2,712
This Orbitz deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:10 pm
FCA
-
LGW
2 stops17h 30m
Multiple Airlines
Fri 10/163:40 pm
LGW
-
FCA
2 stops34h 42m
Multiple Airlines
Deal found 2/16$3,278

Find flight deals from Kalispell to London

Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$728
(United Airlines)

Popular in

March

Cheapest in

October
Provider with most accurate pricing for Kalispell Glacier Park-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kalispell Glacier Park-London (LON) flights.
Search Deals
From Kalispell Glacier Park to London (LON)
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($362 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($94 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kalispell to London 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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2026.
Use the filters below to find and compare flights from Kalispell to London that are best for you.

Fly from

Kalispell

Fly to

London

Route

Depart

Return

Price

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 4/9

2:33 pm-9:40 am

1 stop12h 07m

London Heathrow

Tue 4/14

2:50 pm-9:27 pm

1 stop13h 37m

$728

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 3/4

6:00 am-9:40 am

1 stop20h 40m

London Heathrow

Sun 3/8

11:35 am-9:57 pm

1 stop16h 22m

$861

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Wed 5/20

11:33 am-2:40 pm

2 stops20h 07m

London Gatwick

Tue 5/26

1:00 pm-11:58 pm

2 stops17h 58m

$1,006

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Sat 6/20

10:53 am-11:45 am

2 stops17h 52m

London Gatwick

Sun 6/28

10:00 am-9:18 am

2 stops30h 18m

$2,059

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Compare providers for flights from Kalispell to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kalispell to London in February.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Kalispell-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kalispell-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kalispell-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kalispell-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kalispell-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Kalispell to London

Have a flexible travel schedule? Discover the best time to fly to London from Kalispell with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Kalispell to London
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated February 20, 2026.
Peruse reviews from past customers who have flown with United Airlines from Kalispell to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,325 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,325 reviews
United Airlines
7.4
Good
9,325 reviews

Boarding

7.7

Comfort

7.3

Overall

7.4

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Kalispell to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Kalispell to London?

    Located just 8.4 mi from the city center, Kalispell Glacier Park is the airport most travelers will use when flying to London from Kalispell. Booking flights from Glacier Park (FCA) to London should be relatively easy as there are 0 daily outbound flights to London from 1 airline.

  • How long is the flight from Kalispell to London?

    Departing from Kalispell to London will take you 12h 07m. Kalispell and London are separated by a distance of 4512 mi.

  • What is the cheapest airline to fly from Kalispell to London round-trip?

    Flying on United Airlines is currently your cheapest option to London, with prices starting at $733. Users have found that United Airlines is 36% cheaper than the other options available to this destination.

  • Can I find deals for flights from Kalispell to London that include hotel bookings?

    Yes. In addition to deals on Kalispell to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kalispell to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kalispell to London.

  • Can I find deals for business class flights from Kalispell to London?

    Yes. Cheapflights offers flight deals from Kalispell to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Kingston upon Thames
Eastbourne
Sutton
Slough

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Kalispell to London

Discover the top airline that operate flights from Kalispell to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$733Average$851FlexibilityNo cancel feeOn-time69%

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