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$379+ Cheap flights from Kalispell (FCA) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LON
Jan 1 — Jan 81
Thu 1/1
Thu 1/8
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 December 2, 2025.

This Delta deal was found by Cheapflights users on 11/30. 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.
Thu 12/115:00 amFCA - LHR
2 stops18h 50mDelta
Sun 12/147:40 pmLHR - FCA
2 stops25h 16mDelta
Deal found 11/30$690
This United Airlines deal was found by Cheapflights users on 11/30. 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 12/116:15 amFCA - LHR
1 stop20h 25mUnited Airlines
Sun 12/1411:35 amLHR - FCA
1 stop17h 11mUnited Airlines
Deal found 11/30$853
This United Airlines deal was found by Cheapflights users on 11/30. 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 12/176:15 amFCA - LHR
2 stops18h 15mUnited Airlines
Sat 12/274:20 pmLHR - FCA
2 stops30h 41mUnited Airlines
Deal found 11/30$1,371
This Delta deal was found by Cheapflights users on 11/30. 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.
Tue 12/165:00 amFCA - LHR
2 stops19h 05mDelta
Sun 12/288:40 amLHR - FCA
2 stops39h 27mDelta
Deal found 11/30$1,476
This Delta deal was found by Cheapflights users on 11/30. 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 12/175:00 amFCA - LHR
1 stop22h 00mDelta
Sun 12/2810:45 amLHR - FCA
1 stop21h 02mDelta
Deal found 11/30$1,514
This United Airlines deal was found by Cheapflights users on 11/30. 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.
Tue 12/166:15 amFCA - LHR
1 stop20h 25mUnited Airlines
Sat 12/2710:05 amLHR - FCA
1 stop33h 51mUnited Airlines
Deal found 11/30$1,547
This Delta deal was found by Cheapflights users on 11/30. 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.
Thu 12/185:00 amFCA - LHR
2 stops18h 45mDelta
Sun 12/2810:45 amLHR - FCA
1 stop21h 02mDelta
Deal found 11/30$1,588
This Delta deal was found by Cheapflights users on 11/29. 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 12/512:11 pmFCA - LHR
1 stop14h 49mDelta
Tue 12/910:45 amLHR - FCA
1 stop19h 25mDelta
Deal found 11/29$1,757

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 December 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$598
(Delta)

One-way from

$379
(KLM)

Popular in

December

Cheapest in

October

Average price

$1,629
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
One-way flight from Kalispell Glacier Park to London (LON)
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($158 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 December 2025
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 December 2, 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

Wed 1/14

12:15 pm-10:00 am

1 stop14h 45m

London Heathrow

Wed 1/21

5:50 pm-5:19 pm

2 stops30h 29m

$600

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 3/3

3:20 pm-7:05 am

1 stop32h 45m

London Heathrow

Wed 3/11

6:20 am-5:18 pm

2 stops16h 58m

$603

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 2/28

3:20 pm-6:50 am

2 stops32h 30m

London Heathrow

Wed 3/11

6:20 am-11:41 pm

2 stops23h 21m

$603

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 3/3

3:20 pm-7:05 am

1 stop32h 45m

London Heathrow

Tue 3/10

6:20 am-11:41 pm

2 stops23h 21m

$603

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 3/4

5:00 am-9:00 am

3 stops21h 00m

London Heathrow

Wed 3/11

6:20 am-5:18 pm

2 stops16h 58m

$603

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 3/2

5:00 am-11:55 am

2 stops23h 55m

London Heathrow

Tue 3/10

6:20 am-11:41 pm

2 stops23h 21m

$603

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 3/2

5:00 am-11:55 am

2 stops23h 55m

London Heathrow

Mon 3/9

11:45 am-5:18 pm

2 stops35h 33m

$604

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 3/2

5:00 am-10:30 am

2 stops22h 30m

London Heathrow

Thu 3/12

11:45 am-5:18 pm

2 stops35h 33m

$604

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 2/28

3:20 pm-6:50 am

2 stops32h 30m

London Heathrow

Mon 3/9

11:45 am-5:18 pm

2 stops35h 33m

$604

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 3/3

5:00 am-9:00 am

3 stops21h 00m

London Heathrow

Thu 3/12

11:45 am-5:18 pm

2 stops35h 33m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 26 results
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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 December.
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 December 2, 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
9,065 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

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
9,065 reviews
United Airlines
7.4
Good
9,065 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

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
Ilford
Hounslow
Hayes
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Watford
Borehamwood
Aylesbury
Chipping Norton
Kingston upon Thames
Wembley
Folkestone
Eastbourne
Sutton

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 December 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$733Average$851FlexibilityNo cancel feeOn-time69%

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