HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$601+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LON
Nov 25 — Dec 21
Tue 11/25
Tue 12/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Kalispell to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 October 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$601
(KLM)

Popular in

December

Cheapest in

October

Average price

$800
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. 12% potential increase in price ($157 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 October 26, 2025.

This Virgin Atlantic deal was found by Cheapflights users on 10/24. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/812:11 pmFCA - LHR
1 stop14h 49mVirgin Atlantic
Mon 12/1511:05 amLHR - FCA
2 stops37h 20mVirgin Atlantic
Deal found 10/24$665
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Mon 12/82:37 pmFCA - LHR
1 stop12h 03mUnited Airlines
Mon 12/1511:35 amLHR - FCA
1 stop17h 11mUnited Airlines
Deal found 10/24$699
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Sat 12/132:37 pmFCA - LHR
2 stops22h 58mUnited Airlines
Sat 1/106:00 pmLHR - FCA
2 stops34h 59mUnited Airlines
Deal found 10/25$791
This Delta deal was found by Cheapflights users on 10/25. 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.
Sat 12/136:06 pmFCA - LHR
2 stops29h 59mDelta
Sat 1/1010:45 amLHR - FCA
1 stop19h 35mDelta
Deal found 10/25$808
This KLM deal was found by Cheapflights users on 10/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:11 pmFCA - LHR
1 stop14h 49mMultiple Airlines
Sat 1/1010:45 amLHR - FCA
1 stop19h 22mMultiple Airlines
Deal found 10/25$863
This Expedia deal was found by Cheapflights users on 10/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:30 amFCA - LGW
2 stops21h 25mMultiple Airlines
Mon 12/1511:55 amLGW - FCA
2 stops19h 03mMultiple Airlines
Deal found 10/24$949
This KLM deal was found by Cheapflights users on 10/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:11 pmFCA - LHR
1 stop14h 49mKLM
Sat 12/65:50 pmLHR - FCA
2 stops30h 35mKLM
Deal found 10/23$1,791

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 October 26, 2025.
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

Tue 1/13

12:15 pm-10:00 am

1 stop14h 45m

London Heathrow

Thu 1/22

8:25 pm-5:14 pm

2 stops27h 49m

$601

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 1/25

5:24 am-10:30 am

2 stops22h 06m

London Heathrow

Sat 1/31

8:40 am-5:14 pm

2 stops39h 34m

$633

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 1/23

12:15 pm-10:00 am

1 stop14h 45m

London Heathrow

Fri 1/30

6:20 am-5:14 pm

2 stops17h 54m

$650

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 1/23

5:24 am-10:00 am

1 stop21h 36m

London Heathrow

Wed 1/28

6:20 am-5:14 pm

2 stops17h 54m

$650

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 1/13

6:25 am-7:00 am

1 stop17h 35m

London Heathrow

Thu 1/22

2:55 pm-11:58 pm

1 stop16h 03m

$658

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 12/8

12:11 pm-12:50 pm

2 stops17h 39m

London Heathrow

Mon 12/15

11:05 am-5:25 pm

2 stops37h 20m

$665

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Mon 2/2

6:25 am-10:55 am

2 stops21h 30m

London Gatwick

Fri 2/6

11:55 am-11:58 pm

2 stops19h 03m

$943

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Mon 1/26

6:25 am-10:55 am

2 stops21h 30m

London Gatwick

Fri 1/30

11:55 am-11:58 pm

2 stops19h 03m

$943

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Tue 1/13

6:25 am-10:55 am

2 stops21h 30m

London Gatwick

Thu 1/22

11:55 am-12:14 pm

2 stops31h 19m

$949

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Mon 12/8

6:30 am-10:55 am

2 stops21h 25m

London Gatwick

Mon 12/15

11:55 am-11:58 pm

2 stops19h 03m

$949

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 11 results
1
2

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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 October 26, 2025.
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
8,999 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 14h 45m. Kalispell and London are separated by a distance of 4512 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 30% 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
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 October 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$733Average$875FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.