FCA - LHR

$597 Find Cheap Flights from Kalispell to London Heathrow Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kalispell to Heathrow departing on 7/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$875
KLM
Mon 10/12Tue 10/20
FCA - LHR • 1 stop
Cheapest one-way
$597
United Airlines
Mon 7/20
FCA - LHR • 1 stop
Top airlines
Cheapest • from $875 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Kalispell and Heathrow. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $604 (round-trip)
Shortest trip • 12h 28m (one-way)
Insights
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We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Kalispell to Heathrow (FCA-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Kalispell to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Kalispell to Heathrow

Mon, Oct 12 - Tue, Oct 20
KLM Logo
12:35 pm - 10:00 am
FCA
-
LHR
14h 25m
1 stop
KLM Logo
6:30 am - 2:41 pm
LHR
-
FCA
15h 11m
2 stops
$875KLM
Wed, Oct 14 - Wed, Oct 21
KLM Logo
12:35 pm - 1:05 pm
FCA
-
LHR
17h 30m
2 stops
KLM Logo
6:30 am - 2:41 pm
LHR
-
FCA
15h 11m
2 stops
$879KLM
Wed, Oct 14 - Wed, Oct 21
Alaska Airlines Logo
7:45 pm - 3:05 pm
FCA
-
LHR
12h 20m
1 stop
Alaska Airlines Logo
5:00 pm - 10:59 pm
LHR
-
FCA
12h 59m
1 stop
$885Alaska Airlines
Tue, Nov 3 - Thu, Nov 5
Alaska Airlines Logo
2:05 pm - 12:20 pm
FCA
-
LHR
15h 15m
1 stop
Alaska Airlines Logo
2:45 pm - 11:59 pm
LHR
-
FCA
16h 14m
1 stop
$886Alaska Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 9:40 am
FCA
-
LHR
20h 25m
1 stop
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$887United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 9:40 am
FCA
-
LHR
20h 25m
1 stop
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$889United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 7:55 am
FCA
-
LHR
18h 40m
2 stops
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$892United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 7:55 am
FCA
-
LHR
18h 40m
2 stops
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$893United Airlines
Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
6:15 am - 7:55 am
FCA
-
LHR
18h 40m
2 stops
United Airlines Logo
6:00 pm - 9:42 pm
LHR
-
FCA
34h 42m
2 stops
$894United Airlines
Wed, Nov 11 - Tue, Nov 17
Multiple Airlines Logo
11:59 am - 10:00 am
FCA
-
LHR
15h 01m
1 stop
Multiple Airlines Logo
8:25 pm - 5:45 pm
LHR
-
FCA
28h 20m
2 stops
$903Multiple Airlines
Booking Insights

KAYAK's insights & trends for Kalispell to Heathrow flights

Get data-powered insights and trends into flights from Kalispell to Heathrow to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Kalispell to London Heathrow Airport?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Kalispell to London Heathrow Airport were found on KLM ($875) and Alaska Airlines ($885).

Good to know

Cheapest flight$597
Flight from Kalispell to London Heathrow Airport

When to book flights from Kalispell to Heathrow

Are your dates flexible? Find out the best times to travel from Kalispell to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Kalispell to London Heathrow Airport flights

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

    In the last 5 days, the lowest price for a flight from Kalispell to London Heathrow Airport was $597 for a one-way ticket and $875 for a round-trip.

  • Do I need a passport to fly between Kalispell and London Heathrow Airport?

    A passport is required to fly from Kalispell to London Heathrow Airport.

  • Which airports will I be using when flying from Kalispell to London Heathrow Airport?

    When flying out of Kalispell you will be using Kalispell Glacier Park. You will be landing at London Heathrow Airport, also known as London Heathrow.

  • Which aircraft models fly most regularly from Kalispell to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Kalispell to London Heathrow Airport?

    Star Alliance is the only airline alliance operating flights between Kalispell and London Heathrow Airport.

  • How does KAYAK find such low prices on flights from Kalispell to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kalispell to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kalispell to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Kalispell is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Kalispell to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Kalispell with another airline. Booking your flights between Kalispell and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kalispell to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Kalispell up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Kalispell to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Kalispell to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Kalispell to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9948 reviews
6.7Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

10.0 ExcellentAnonymous, Jun 2026
LAX - LHR
Read more United Airlines reviews

I was very disappointed with my experience at the United Airlines baggage check. The representative was rude and unhelpful. I was required to remove approximately 1.5 pounds from my two checked bags, even though it was a very small amount over the limit. The interaction was unnecessarily unpleasant, and I expected much better customer service. I hope United will review this incident and provide additional customer service training to its staff.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

Waited for our plane from HNL so we didn't miss connection. AMAZING Service for that, then really clean plane. Nice airline attendants.

Horrible! I paid for a straight flight from Chicago to London. A week before trip it changed and now I had a connecting flight. Our flight was delayed an hour and a half because our flight crew was still flying in from CA. Forty passengers ran from one plane to the next. The next United Airlines flight was delayed two to three hours because of mechanical difficulties. They had to ready another plane which took time. I missed my scheduled excursion in London. 😢

Lufthansa placed a 300 lb passenger in the aisle seat and I was stuck in the middle leaning sideways with no arm rest or ability to sit up straight and fully use my seat (due to encroachment-the seats are very narrow) the entire flight.

Everything you need to know for your flight from Kalispell to Heathrow

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