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

Flying on Virgin Atlantic is currently your cheapest option to London Heathrow Airport, with prices starting at $596. Additional round-trip tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at $652 and $692, respectively. These flights start at 38% lower than the current average price 3 months from now.

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

Currently, November is the cheapest month in which you can book a flight from Kalispell to London Heathrow Airport (average of $661). Flying from Kalispell to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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.

What is the cheapest day to fly from Kalispell to London Heathrow Airport?

Travelers seeking maximum savings on their Kalispell to London Heathrow Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest day to fly round-trip from Kalispell to London Heathrow Airport?

Thursday flights are found to be more expensive to fly from Kalispell to London Heathrow Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Heathrow Airport.

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

One of the essential ways to save on airfare from Kalispell to London Heathrow Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 6% on airfare.

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

Kalispell Glacier Park (FCA), located 8.4 mi from the city center, is the airport you fly out of when you book flights from Kalispell to London Heathrow. 2 airlines have flights from Glacier Park to London Heathrow on a regular basis. Booking flights from Kalispell Glacier Park to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

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 vacation 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.

$446+ Flights from Kalispell to London Heathrow Airport

Q: How much does it cost to fly round-trip from Kalispell to London Heathrow Airport?

Airfare is below average for this route at the moment. Kalispell to London Heathrow Airport flights typically cost between $1,106 and $1,825 in September. The cheapest round-trip price found within the last 3 days was $596 on Virgin Atlantic (Sep 10-Sep 17).

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Cheap flight deals from Kalispell to Heathrow

Round-trip from	$596 (Virgin Atlantic)
One-way from	$446 (Virgin Atlantic)
Popular in	August
Cheapest in	January
Average price	$1,271

From Kalispell Glacier Park to London Heathrow

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One-way flight from Kalispell Glacier Park to London Heathrow

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Highest demand for flights based on searches. 17% potential increase in price ($204 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT 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 July 29, 2025.

Wed 9/1011:55 amFCA - LHR

2 stops16h 25mVirgin Atlantic

Wed 9/1710:55 amLHR - FCA

2 stops20h 27mVirgin Atlantic

Deal found 7/27

$596

Wed 9/1012:41 pmFCA - LHR

1 stop16h 04mUnited Airlines

Wed 9/1711:05 amLHR - FCA

1 stop15h 38mUnited Airlines

Deal found 7/27

$652

Sat 8/1611:55 amFCA - LHR

1 stop14h 55mKLM

Sat 8/2310:55 amLHR - FCA

1 stop13h 36mKLM

Deal found 7/27

$692

Tue 9/21:25 pmFCA - LHR

1 stop14h 40mAmerican Airlines

Thu 9/189:15 amLHR - FCA

1 stop13h 58mAmerican Airlines

Deal found 7/29

$4,071

Tue 9/21:25 pmFCA - LHR

1 stop12h 40mMultiple Airlines

Thu 9/1812:15 pmLHR - FCA

2 stops18h 44mMultiple Airlines

Deal found 7/29

$4,124

Best flights from Kalispell to Heathrow
Discover carefully curated flight deals from Kalispell to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Wed 9/1011:55 amFCA - LHR

2 stops16h 25mVirgin Atlantic

Wed 9/1710:55 amLHR - FCA

2 stops20h 27mVirgin Atlantic

Deal found 7/27

$596

Wed 9/1012:41 pmFCA - LHR

1 stop16h 04mUnited Airlines

Wed 9/1711:05 amLHR - FCA

1 stop15h 38mUnited Airlines

Deal found 7/27

$652

Sat 8/1611:55 amFCA - LHR

1 stop14h 55mKLM

Sat 8/2310:55 amLHR - FCA

1 stop13h 36mKLM

Deal found 7/27

$692

Tue 9/21:25 pmFCA - LHR

1 stop14h 40mAmerican Airlines

Thu 9/189:15 amLHR - FCA

1 stop13h 58mAmerican Airlines

Deal found 7/29

$4,071

Tue 9/21:25 pmFCA - LHR

1 stop12h 40mMultiple Airlines

Thu 9/1812:15 pmLHR - FCA

2 stops18h 44mMultiple Airlines

Deal found 7/29

$4,124

Last-minute flights from Kalispell to Heathrow
Discover last-minute flight deals from Kalispell to Heathrow. Data last updated July 29, 2025 and is based on user searches.

Sat 8/1611:55 amFCA - LHR

1 stop14h 55mKLM

Sat 8/2310:55 amLHR - FCA

1 stop13h 36mKLM

Deal found 7/27

$692

Sat 8/1611:55 amFCA - LHR

1 stop14h 55mVirgin Atlantic

Sat 8/2312:25 pmLHR - FCA

2 stops17h 45mVirgin Atlantic

Deal found 7/27

$696

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 July 29, 2025.

Wed 1/75:20 amFCA - LHR

2 stops18h 05mVirgin Atlantic

Deal found 7/27

$446

Wed 1/72:29 pmFCA - LHR

3 stops32h 26mUnited Airlines

Deal found 7/27

$513

Cheapflights Fare Finder

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

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 9/10

11:55 am-11:20 am

2 stops16h 25m

London Heathrow

Wed 9/17

10:55 am-12:22 am

2 stops20h 27m

$596

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 9/10

12:41 pm-11:45 am

1 stop16h 04m

London Heathrow

Wed 9/17

11:05 am-7:43 pm

1 stop15h 38m

$652

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 8/16

11:55 am-9:50 am

1 stop14h 55m

London Heathrow

Sat 8/23

10:55 am-5:31 pm

1 stop13h 36m

$692

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 9/2

1:25 pm-11:05 am

1 stop14h 40m

London Heathrow

Thu 9/18

9:15 am-4:13 pm

1 stop13h 58m

$4,071

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 9/2

1:25 pm-9:05 am

1 stop12h 40m

London Heathrow

Thu 9/18

12:15 pm-11:59 pm

2 stops18h 44m

$4,124

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 1/7

5:20 am-6:25 am

2 stops18h 05m

$446

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 1/7

2:29 pm-5:55 am

3 stops32h 26m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 round-trip 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 to fly round-trip from Kalispell to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown KLM, United Airlines, and Virgin Atlantic from Kalispell to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,383 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

KLM

7.8

Good

1,383 reviews

KLM

7.8

Good

1,383 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

United Airlines

7.4

Good

8,899 reviews

KLM

7.8

Good

1,383 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Virgin Atlantic

7.4

Good

655 reviews

KLM

7.8

Good

1,383 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

American Airlines

7.2

Good

10,000 reviews

KLM

7.8

Good

1,383 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

What airport do you fly from for flights from Kalispell to London Heathrow?
Kalispell Glacier Park (FCA), located 8.4 mi from the city center, is the airport you fly out of when you book flights from Kalispell to London Heathrow. 2 airlines have flights from Glacier Park to London Heathrow on a regular basis. Booking flights from Kalispell Glacier Park to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.
What are the cheapest airlines flying from Kalispell to London Heathrow Airport round-trip?
Flying on Virgin Atlantic is currently your cheapest option to London Heathrow Airport, with prices starting at $596. Additional round-trip tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at $652 and $692, respectively. These flights start at 38% lower than the current average price 3 months from now.
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 vacation 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, November is the cheapest month in which you can book a flight from Kalispell to London Heathrow Airport (average of $661). Flying from Kalispell to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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

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Broadway

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Top 2 airlines flying from Kalispell to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$680	Average$830	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$706	Average$776	FlexibilityNo cancel fee	On-timeN/A

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$446+ Cheap flights from Kalispell (FCA) to Heathrow (LHR)

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kalispell to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Kalispell to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 July 29, 2025.

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 July 29, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

How much does it cost to fly round-trip from Kalispell to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown KLM, United Airlines, and Virgin Atlantic from Kalispell to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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?

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

Traveling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kalispell to Heathrow

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

Top 2 airlines flying from Kalispell to Heathrow

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Book with Flexibility

Travel Smart

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 July 29, 2025.