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 15m. Fly via Alaska Airlines 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.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from FCA to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kalispell to London Heathrow Airport as you normally would.

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.

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.

£469+ Cheap Flights from Kalispell to London Heathrow Airport

Cheap flight deals from Kalispell to Heathrow

Enter your travel dates to find the best prices.

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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 30 October 2026.

Tue 1/1206:15 -

1 stop20h 25m

Wed 9/1207:30 -

2 stops21h 21m

Deal found 30/10£714

Tue 1/1213:54 -

1 stop15h 16m

Wed 9/1214:55 -

1 stop15h 26m

Deal found 29/10£729

Mon 30/1112:25 -

1 stop14h 35m

Mon 7/1219:20 -

2 stops29h 16m

Deal found 30/10£736

Thu 26/1106:14 -

1 stop20h 26m

Thu 3/1206:35 -

2 stops38h 01m

Deal found 27/10£749

Find flight deals from Kalispell to Heathrow

Round-trip from	£665
One-way from	£469

Alaska Airlines
2/3-5/3
2 total stops
39h 01m total
Kalispell to London

Search Deals

United Airlines
4/11-31/12
2 total stops
18h 41m total
Kalispell to London

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kalispell to London Heathrow Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sat 7/11

14:36-21:20

2 stops23h 44m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£469

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Wed 4/11

14:36-17:05

2 stops19h 29m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£475

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 2/3

06:33-12:20

1 stop22h 47m

London Heathrow

Fri 5/3

14:45-23:59

1 stop16h 14m

£666

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 2/3

12:45-12:00

1 stop16h 15m

London Heathrow

Fri 5/3

07:40-22:45

2 stops22h 05m

£688

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 1/12

06:15-09:40

1 stop20h 25m

London Heathrow

Wed 9/12

07:30-21:51

2 stops21h 21m

£714

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Mon 30/11

12:25-13:45

2 stops18h 20m

London Heathrow

Mon 7/12

17:35-17:36

2 stops31h 01m

£740

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Fri 18/12

17:10-06:40

2 stops30h 30m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£740

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Thu 26/11

06:14-09:40

1 stop20h 26m

London Heathrow

Thu 3/12

06:35-13:36

2 stops38h 01m

£749

Fastest return journey

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Wed 4/11

13:55-12:20

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£5,167

Flights are sorted by cheapest return flights first.

Deals found on 30/10

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.

FCA-LHR

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

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 15m. Fly via Alaska Airlines 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.

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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?

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.

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Cheap flights from Kalispell to London Heathrow Airport from £469

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Kalispell to Heathrow

Cheapest flights from Kalispell to HeathrowExplore 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 30 October 2026.

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 30 October 2026.

Best flights from Kalispell to HeathrowDiscover carefully curated flight deals from Kalispell to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Discover carefully curated flight deals from Kalispell to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Last-minute flights from Kalispell to HeathrowDiscover last-minute flight deals from Kalispell to Heathrow. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Kalispell to Heathrow. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Kalispell to HeathrowSearch for one-way flight options from Kalispell to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

Search for one-way flight options from Kalispell to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.

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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.

Related info for your journey

What airport do you fly from for flights from Kalispell to London Heathrow?

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

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

How can I find direct flights from Kalispell to Heathrow?

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kalispell to Heathrow

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Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Kalispell to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.

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

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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 30 October 2026.

Best flights from Kalispell to Heathrow
Discover carefully curated flight deals from Kalispell to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.

Last-minute flights from Kalispell to Heathrow
Discover last-minute flight deals from Kalispell to Heathrow. Data last updated 30 October 2026 and is based on user searches.

One-way flights from Kalispell to Heathrow
Search for one-way flight options from Kalispell to Heathrow. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.