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Cheap flights from Kalispell to London Heathrow Airport from £370

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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LHR
7 Mar — 14 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Kalispell to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Kalispell to Heathrow
Explore the most affordable flight options available from Kalispell to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 February 2026.

Tue 5/506:00
FCA
-
LHR
1 stop23h 20m
United Airlines
Tue 12/507:25
LHR
-
FCA
2 stops21h 32m
United Airlines
Deal found 3/2£475
Tue 5/514:49
FCA
-
LHR
1 stop15h 16m
KLM
Tue 12/510:55
LHR
-
FCA
1 stop13h 38m
KLM
Deal found 3/2£496
Thu 12/312:10
FCA
-
LHR
2 stops16h 20m
KLM
Tue 17/317:50
LHR
-
FCA
2 stops29h 28m
KLM
Deal found 1/2£541
Thu 12/313:28
FCA
-
LHR
1 stop16h 32m
United Airlines
Tue 17/306:35
LHR
-
FCA
2 stops21h 22m
United Airlines
Deal found 1/2£561
Mon 17/815:00
FCA
-
LHR
1 stop15h 05m
KLM
Fri 28/809:55
LHR
-
FCA
2 stops20h 51m
KLM
Deal found 1/2£599
Tue 18/806:59
FCA
-
LHR
2 stops23h 16m
Delta
Thu 27/806:15
LHR
-
FCA
2 stops24h 31m
Delta
Deal found 1/2£608
Wed 19/813:25
FCA
-
LHR
1 stop12h 40m
American Airlines
Wed 26/816:25
LHR
-
FCA
1 stop25h 35m
American Airlines
Deal found 4/2£619

Find flight deals from Kalispell to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Kalispell (FCA) to Heathrow (LHR). 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 5 February 2026.

Round-trip from

£475

One-way from

£370

Popular in

May

Cheapest in

January
United Airlines
  • United Airlines
  • 5/5-12/5
  • 3 total stops
  • 44h 52m total
  • Kalispell to London
Search Deals
27/5
  • 27/5
  • 3 total stops
  • 25h 40m total
  • Kalispell to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£125 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£37 potential savings vs. average return price).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Kalispell to Heathrow 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 858,174 searches. Data last updated 5 February 2026.
Use the filters below to find and compare flights from Kalispell to London Heathrow Airport that are best for you.

Fly from

Kalispell

Fly to

Heathrow

Route

Depart

Return

Price

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 5/5

06:00-09:20

2 stops20h 20m

London Heathrow

Tue 12/5

07:25-21:57

2 stops21h 32m

£478

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 12/3

12:10-10:30

2 stops16h 20m

London Heathrow

Tue 17/3

17:50-17:18

2 stops29h 28m

£541

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 12/3

13:28-12:00

1 stop16h 32m

London Heathrow

Tue 17/3

06:35-21:57

2 stops21h 22m

£561

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 25/2

06:00-09:40

1 stop20h 40m

London Heathrow

Sun 1/3

11:35-22:12

1 stop17h 37m

£630

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 13/6

20:00-18:05

3 stops39h 05m

£442

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 16/6

06:33-14:15

3 stops24h 42m

£490

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 12/6

10:31-12:05

2 stops18h 34m

£497

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 16/6

11:59-11:00

1 stop16h 01m

£568

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 16/6

13:35-11:00

1 stop14h 25m

£568

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 27/5

13:25-10:00

1 stop13h 35m

£568

Flights are sorted by cheapest return flights first.

Deals found on 4/2

Showing 1-10 of 13 results
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Best time to book a flight from Kalispell to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Kalispell with our price prediction graph.
Estimated return 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.

Related info for your journey

Find useful and relevant information for your journey from Kalispell to Heathrow. 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 Heathrow?

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

  • How long is the flight from Kalispell to London Heathrow Airport?

    There are many flights that can get you from Kalispell to London Heathrow Airport in 16h 20m. Fly via United Airlines or KLM to get the fastest option. The distance between Kalispell and London Heathrow Airport is about 4512 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Kalispell to Heathrow 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Luton
Northampton
Wembley
Gatwick
Slough
Ilford
Hounslow
Brentford
Hayes
Colchester
Watford
Guildford
Swindon
Bedford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Kalispell to Heathrow?

When you search for this flight from Kalispell to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Kalispell to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Kalispell to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Kalispell to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Kalispell to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Kalispell to Heathrow become cheaper?

Yes! Start tracking prices for Kalispell to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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