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$685+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LON
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$685
(Delta)

Popular in

December

Cheapest in

September

Average price

$775
From Kalispell Glacier Park to London (LON)
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Highest demand for flights based on searches. 15% potential increase in price ($184 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($66 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:20 amFCA - LHR
2 stops19h 45mDelta
Thu 11/68:55 amLHR - FCA
2 stops21h 14mDelta
Deal found 9/15$685
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:38 pmFCA - LHR
1 stop13h 02mUnited Airlines
Thu 11/611:35 amLHR - FCA
1 stop17h 09mUnited Airlines
Deal found 9/15$737
This United Airlines deal was found by Cheapflights users on 9/17. 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 9/1910:47 amFCA - LHR
1 stop15h 53mUnited Airlines
Tue 9/303:50 pmLHR - FCA
2 stops26h 45mUnited Airlines
Deal found 9/17$960
This Delta deal was found by Cheapflights users on 9/17. 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 9/192:55 pmFCA - LHR
2 stops22h 05mDelta
Tue 9/3011:45 amLHR - FCA
2 stops19h 37mDelta
Deal found 9/17$981
This Expedia deal was found by Cheapflights users on 9/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:33 amFCA - LGW
2 stops22h 22mMultiple Airlines
Thu 11/611:55 amLGW - FCA
2 stops19h 02mMultiple Airlines
Deal found 9/15$1,157
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:10 amFCA - LHR
1 stop21h 30mUnited Airlines
Wed 11/511:35 amLHR - FCA
1 stop17h 09mUnited Airlines
Deal found 9/16$1,731
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:10 amFCA - LHR
2 stops19h 20mUnited Airlines
Wed 11/59:10 amLHR - FCA
2 stops19h 34mUnited Airlines
Deal found 9/16$1,736
This Arangrant deal was found by Cheapflights users on 9/16. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/282:07 pmFCA - LHR
1 stop16h 13mBritish Airways
Sat 11/89:25 amLHR - FCA
1 stop21h 32mBritish Airways
Deal found 9/16$1,814
This Expedia deal was found by Cheapflights users on 9/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:06 pmFCA - LHR
1 stop16h 14mMultiple Airlines
Fri 11/79:25 amLHR - FCA
1 stop21h 32mMultiple Airlines
Deal found 9/16$1,831
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/272:38 pmFCA - LHR
1 stop13h 02mUnited Airlines
Sat 11/88:00 amLHR - FCA
2 stops20h 44mUnited Airlines
Deal found 9/16$1,836
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/272:07 pmFCA - LHR
1 stop16h 13mBritish Airways
Sat 11/89:25 amLHR - FCA
1 stop21h 32mBritish Airways
Deal found 9/16$1,863

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 September 17, 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

Thu 10/30

5:20 am-7:05 am

2 stops19h 45m

London Heathrow

Thu 11/6

8:55 am-11:09 pm

2 stops21h 14m

$685

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 10/30

2:38 pm-9:40 am

1 stop13h 02m

London Heathrow

Thu 11/6

11:35 am-9:44 pm

1 stop17h 09m

$737

KalispellLondon

FCA - LGW

FCALGW

Kalispell Glacier Park

Thu 10/30

6:33 am-10:55 am

2 stops22h 22m

London Gatwick

Thu 11/6

11:55 am-11:57 pm

2 stops19h 02m

$1,157

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 10/27

6:10 am-9:40 am

1 stop21h 30m

London Heathrow

Wed 11/5

11:35 am-9:44 pm

1 stop17h 09m

$1,731

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 10/29

6:10 am-7:55 am

2 stops19h 45m

London Heathrow

Wed 11/5

8:00 am-9:44 pm

2 stops20h 44m

$1,736

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 10/26

6:10 am-7:30 am

2 stops19h 20m

London Heathrow

Wed 11/5

11:35 am-9:44 pm

1 stop17h 09m

$1,736

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 10/28

6:10 am-6:20 am

2 stops18h 10m

London Heathrow

Wed 11/5

9:10 am-9:44 pm

2 stops19h 34m

$1,736

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 10/26

6:10 am-7:30 am

2 stops19h 20m

London Heathrow

Thu 11/6

11:35 am-9:44 pm

1 stop17h 09m

$1,736

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 10/28

6:10 am-8:25 am

2 stops20h 15m

London Heathrow

Thu 11/6

9:10 am-9:44 pm

2 stops19h 34m

$1,736

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 10/28

6:10 am-7:55 am

2 stops19h 45m

London Heathrow

Tue 11/4

8:00 am-9:44 pm

2 stops20h 44m

$1,736

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

How much does it cost to fly round-trip from Kalispell to London?

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 September 17, 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
8,926 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

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 13h 02m. 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 $741. Users have found that United Airlines is 28% 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.

  • What is the cheapest month to book a flight from Kalispell to London?

    Currently, November is the cheapest month in which you can book a flight from Kalispell to London (average of $661). Flying from Kalispell to London in June is currently the most expensive (average of $1,097). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
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Wembley
Folkestone
Chichester
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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$741Average$949FlexibilityNo cancel feeOn-time69%

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