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 34h 46m. Fly via Virgin Atlantic or Alaska 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.

£381+ Cheap Flights from Kalispell to London Heathrow Airport

Cheap flight deals from Kalispell to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

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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 19 September 2026.

Mon 9/1112:25 -

2 stops38h 30m

Wed 18/1116:35 -

2 stops32h 02m

Deal found 18/9£547

Mon 9/1107:41 -

1 stop21h 39m

Wed 18/1114:45 -

1 stop34h 09m

Deal found 18/9£550

Fri 13/1112:25 -

1 stop14h 35m

Mon 23/1117:50 -

2 stops30h 47m

Deal found 19/9£595

Fri 13/1112:25 -

2 stops16h 15m

Mon 23/1117:50 -

2 stops30h 47m

Deal found 19/9£599

Fri 16/1015:36 -

1 stop14h 29m

Fri 23/1009:55 -

2 stops20h 02m

Deal found 16/9£606

Sun 1/1118:34 -

1 stop34h 46m

Sun 8/1114:45 -

1 stop28h 30m

Deal found 17/9£610

Fri 16/1012:28 -

2 stops15h 52m

Fri 23/1017:45 -

2 stops36h 12m

Deal found 16/9£615

Sat 7/1105:30 -

1 stop21h 30m

Sun 15/1106:20 -

2 stops23h 25m

Deal found 14/9£633

Sun 1/1114:36 -

2 stops33h 34m

Sun 8/1107:30 -

2 stops37h 04m

Deal found 17/9£658

Find flight deals from Kalispell to Heathrow

Round-trip from	£547
One-way from	£381

Virgin Atlantic
9/11-18/11
4 total stops
70h 32m total
Kalispell to London

Search Deals

Delta
11/10-31/12
2 total stops
20h 07m 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

Sun 11/10

12:28-15:35

2 stops20h 07m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£381

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sat 10/10

18:13-06:20

2 stops29h 07m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£381

Fastest return journey

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sat 10/10

15:36-13:05

1 stop14h 29m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£418

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Fri 18/12

14:45-08:30

2 stops34h 45m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£452

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Mon 9/11

12:25-09:55

2 stops38h 30m

London Heathrow

Wed 18/11

16:35-17:37

2 stops32h 02m

£547

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Fri 18/12

12:28-10:00

1 stop14h 32m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£605

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sun 1/11

18:34-12:20

1 stop34h 46m

London Heathrow

Sun 8/11

14:45-12:15

1 stop28h 30m

£610

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Fri 16/10

12:28-11:20

2 stops15h 52m

London Heathrow

Fri 23/10

17:45-22:57

2 stops36h 12m

£615

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Sat 7/11

05:30-10:00

1 stop21h 30m

London Heathrow

Sun 15/11

06:20-22:45

2 stops23h 25m

£633

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Fri 18/12

12:28-10:00

1 stop14h 32m

London Heathrow

Wed 31/12

00:00-16:00

Nonstop0h 00m

£657

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 14 resultsSorted 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 34h 46m. Fly via Virgin Atlantic or Alaska 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?

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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?

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Cheap flights from Kalispell to London Heathrow Airport from £381

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. 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 19 September 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 19 September 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 19 September 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 19 September 2026.

Last-minute flights from Kalispell to HeathrowDiscover last-minute flight deals from Kalispell to Heathrow. Data last updated 19 September 2026 and is based on user searches.

Discover last-minute flight deals from Kalispell to Heathrow. Data last updated 19 September 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 19 September 2026.

Search for one-way flight options from Kalispell to Heathrow. Find affordable one-way fares based on user searches. Data last updated 19 September 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

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Search flights from Kalispell to Heathrow by cabin class

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Other flights to Heathrow

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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 19 September 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 19 September 2026.

Last-minute flights from Kalispell to Heathrow
Discover last-minute flight deals from Kalispell to Heathrow. Data last updated 19 September 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 19 September 2026.