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Cheap flights from Kalispell to London Heathrow Airport from £358

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
FCA — LHR
17 Jul — 24 Jul1
1 adult

Cheap 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 12 July 2025.

Round-trip from

£438

One-way from

£358

Popular in

August

Cheapest in

January

Average price

£940
Delta
  • Delta
  • 6/8-26/8
  • 2 total stops
  • 29h 01m total
  • Kalispell to London
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United Airlines
  • United Airlines
  • 15/9
  • 1 total stop
  • 14h 50m total
  • Kalispell to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£100 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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Find flight deals from Kalispell to Heathrow

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 12 July 2025.

Wed 6/814:45FCA - LHR
1 stop15h 25mDelta
Tue 26/810:55LHR - FCA
1 stop13h 36mDelta
Deal found 11/7£438
Wed 6/814:32FCA - LHR
1 stop12h 08mUnited Airlines
Wed 27/811:25LHR - FCA
1 stop17h 15mUnited Airlines
Deal found 11/7£483
Tue 30/915:49FCA - LHR
1 stop15h 36mMultiple Airlines
Sat 11/1016:30LHR - FCA
1 stop14h 28mMultiple Airlines
Deal found 11/7£4,423
Tue 30/920:02FCA - LHR
2 stops33h 58mAlaska Airlines
Sat 11/1009:50LHR - FCA
2 stops35h 07mAlaska Airlines
Deal found 11/7£14,525

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 12 July 2025.
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

Wed 6/8

14:45-13:10

1 stop15h 25m

London Heathrow

Tue 26/8

10:55-17:31

1 stop13h 36m

£438

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 6/8

14:32-09:40

1 stop12h 08m

London Heathrow

Wed 27/8

11:25-21:40

1 stop17h 15m

£483

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 15/9

14:55-13:10

1 stop15h 15m

London Heathrow

Sat 20/9

12:25-23:45

1 stop18h 20m

£642

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 30/9

15:49-14:25

1 stop15h 36m

London Heathrow

Sat 11/10

16:30-23:58

1 stop14h 28m

£4,423

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 30/9

20:02-13:00

2 stops33h 58m

London Heathrow

Sat 11/10

09:50-13:57

2 stops35h 07m

£14,525

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 15/9

14:30-12:20

1 stop14h 50m

£358

Flights are sorted by cheapest return flights first.

Deals found on 11/7

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.

Cheapflights Insights

Everything you need to know about your flight from Kalispell to London Heathrow Airport

How much does it cost for a return flight from Kalispell to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 12 July 2025.
Read through reviews of airlines operating flights from Kalispell to London Heathrow Airport, such as Alaska Airlines, Delta, andKLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very Good
7,951 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
KLM
7.8
Good
1,372 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,848 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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.

  • What are the cheapest airlines flying from Kalispell to London Heathrow Airport round-trip?

    Currently priced at £438, Delta will fly you from Kalispell to London Heathrow Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and KLM - these airlines can fly you to your destination from £483 and £642, respectively. You may be able to fly from Kalispell to London Heathrow Airport for 38% less than the average price by searching for these airlines.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Kalispell to London Heathrow Airport (average of £112). Flying from Kalispell to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Kalispell?

Book flights to Kalispell if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Hayes
Ipswich
Folkestone
Southend-on-Sea
Watford
Winchester
Swindon
Maidstone

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Alternative routes for Kalispell to Heathrow

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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?

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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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