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$810+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LON
Dec 21 — Dec 281
Sun 12/21
Sun 12/28
1 adult, Economy
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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 November 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$810
(KLM)

Popular in

December

Cheapest in

October

Average price

$801
Provider with most accurate pricing for Kalispell Glacier Park-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Kalispell Glacier Park-London (LON) flights.
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From Kalispell Glacier Park to London (LON)
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Highest demand for flights based on searches. 12% potential increase in price ($157 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($64 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 21, 2025.

This Delta deal was found by Cheapflights users on 11/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:00 amFCA - LHR
1 stop22h 00mDelta
Tue 12/98:40 amLHR - FCA
2 stops39h 45mDelta
Deal found 11/18$819
This United Airlines deal was found by Cheapflights users on 11/18. 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.
Fri 12/56:15 amFCA - LHR
1 stop20h 25mUnited Airlines
Tue 12/911:35 amLHR - FCA
1 stop17h 11mUnited Airlines
Deal found 11/18$847

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 November 21, 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

Mon 4/13

3:00 pm-1:10 pm

1 stop15h 10m

London Heathrow

Wed 4/22

11:45 am-11:02 pm

2 stops18h 17m

$810

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 1/4

1:39 pm-12:00 pm

1 stop15h 21m

London Heathrow

Sun 1/11

11:35 am-9:59 pm

1 stop17h 24m

$818

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 12/5

5:00 am-10:00 am

1 stop22h 00m

London Heathrow

Tue 12/9

8:40 am-5:25 pm

2 stops39h 45m

$819

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 4/8

6:31 am-10:00 am

3 stops20h 29m

London Heathrow

Thu 4/30

5:40 pm-9:30 pm

2 stops34h 50m

$822

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 3/16

6:00 am-10:25 am

2 stops22h 25m

London Heathrow

Mon 3/30

3:30 pm-9:30 pm

2 stops37h 00m

$830

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Mon 4/13

6:40 am-2:40 pm

2 stops25h 00m

London Gatwick

Wed 4/22

3:40 pm-12:04 pm

2 stops27h 24m

$1,083

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Sun 1/4

8:10 pm-10:55 am

2 stops31h 45m

London Gatwick

Sun 1/11

11:55 am-11:58 pm

2 stops19h 03m

$1,419

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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 November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Kalispell-London flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 21, 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
9,029 reviews

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

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
9,029 reviews
United Airlines
7.4
Good
9,029 reviews

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

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 15h 10m. 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?

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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 November 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$733Average$875FlexibilityNo cancel feeOn-time69%

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