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Cheap flights from Kalispell to London Heathrow Airport from £397

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LHR
23 Apr — 30 Apr1
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 24 March 2026.

Wed 19/812:35
FCA
-
LHR
1 stop15h 20m
American Airlines
Wed 26/814:25
LHR
-
FCA
1 stop28h 12m
American Airlines
Deal found 23/3£643
Fri 11/913:25
FCA
-
LHR
2 stops23h 20m
Multiple Airlines
Fri 25/917:05
LHR
-
FCA
2 stops26h 22m
Multiple Airlines
Deal found 20/3£679
Fri 11/913:25
FCA
-
LHR
1 stop12h 40m
American Airlines
Fri 25/920:10
LHR
-
FCA
2 stops23h 17m
American Airlines
Deal found 20/3£702
Wed 19/813:25
FCA
-
LHR
1 stop12h 40m
Multiple Airlines
Wed 26/811:10
LHR
-
FCA
2 stops19h 49m
Multiple Airlines
Deal found 23/3£744
Tue 14/412:52
FCA
-
LHR
1 stop17h 08m
Multiple Airlines
Tue 21/409:50
LHR
-
FCA
1 stop20h 57m
Multiple Airlines
Deal found 24/3£751
Mon 4/514:49
FCA
-
LHR
1 stop15h 16m
Delta
Wed 13/506:30
LHR
-
FCA
2 stops17h 57m
Delta
Deal found 21/3£754
Mon 4/514:49
FCA
-
LHR
1 stop15h 16m
KLM
Wed 13/506:30
LHR
-
FCA
2 stops17h 57m
KLM
Deal found 23/3£758
Wed 19/812:32
FCA
-
LHR
2 stops15h 08m
United Airlines
Wed 26/808:00
LHR
-
FCA
2 stops20h 32m
United Airlines
Deal found 20/3£760

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 24 March 2026.

Round-trip from

£643

One-way from

£397

Popular in

July

Cheapest in

January

Average price

£782
American Airlines
  • American Airlines
  • 19/8-26/8
  • 2 total stops
  • 43h 32m total
  • Kalispell to London
Search Deals
8/5
  • 8/5
  • 3 total stops
  • 29h 27m total
  • Kalispell to London
Search Deals
Highest demand for flights based on searches. 39% potential increase in price (£399 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease (£76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 24 March 2026.
Use the filters below to find and compare flights from Kalispell to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 4/5

12:10-13:15

2 stops18h 05m

London Heathrow

Wed 13/5

06:30-17:27

2 stops17h 57m

£754

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 19/8

12:32-10:40

2 stops15h 08m

London Heathrow

Wed 26/8

09:30-21:32

2 stops19h 02m

£760

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 4/5

06:00-08:30

2 stops19h 30m

London Heathrow

Wed 13/5

08:00-21:57

2 stops20h 57m

£783
Fastest return journey

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 4/5

14:49-13:05

1 stop15h 16m

London Heathrow

Wed 13/5

06:15-17:27

2 stops18h 12m

£800

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Thu 30/4

14:49-20:10

2 stops22h 21m

London Heathrow

Mon 18/5

06:30-23:14

2 stops23h 44m

£865

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 4/5

12:10-13:05

2 stops17h 55m

London Heathrow

Sun 31/5

06:30-23:14

2 stops23h 44m

£883

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sun 12/4

14:33-09:40

1 stop12h 07m

London Heathrow

Thu 30/4

17:40-21:57

2 stops35h 17m

£903

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 20/5

14:33-06:35

2 stops33h 02m

London Heathrow

Tue 26/5

14:50-21:47

1 stop13h 57m

£914
Cheapest one-way

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 8/5

19:28-07:55

3 stops29h 27m

£397
Fastest single journey

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 8/5

06:00-09:40

1 stop20h 40m

£453

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Sorted by cheapest first

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 15h 08m. Fly via Delta or United Airlines 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
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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Alternative routes for Kalispell to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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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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