FCA - LHR

$445 Find Cheap Flights from Kalispell to London Heathrow Airport

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 4/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kalispell to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kalispell to London, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$861
United Airlines
Wed 3/4Sun 3/8
FCA - LHR • 1 stop
Cheapest one-way
$445
Multiple Airlines
Wed 4/15
FCA - LHR • 3 stops
Top airlines
United Airlines
Cheapest • from $861 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
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

Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
6:00 am - 9:40 am
FCA
-
LHR
20h 40m
1 stop
United Airlines Logo
11:35 am - 9:57 pm
LHR
-
FCA
16h 22m
1 stop
$861United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
6:00 am - 9:40 am
FCA
-
LHR
20h 40m
1 stop
United Airlines Logo
11:35 am - 9:57 pm
LHR
-
FCA
16h 22m
1 stop
$862United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
2:41 pm - 9:40 am
FCA
-
LHR
11h 59m
1 stop
United Airlines Logo
3:20 pm - 11:53 am
LHR
-
FCA
26h 33m
2 stops
$866United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
2:41 pm - 5:55 am
FCA
-
LHR
32h 14m
2 stops
United Airlines Logo
7:40 am - 10:53 am
LHR
-
FCA
34h 13m
2 stops
$878United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
2:41 pm - 5:55 am
FCA
-
LHR
32h 14m
2 stops
United Airlines Logo
10:25 am - 11:53 am
LHR
-
FCA
31h 28m
2 stops
$879United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
6:00 am - 4:50 pm
FCA
-
LHR
27h 50m
2 stops
United Airlines Logo
3:20 pm - 11:53 am
LHR
-
FCA
26h 33m
2 stops
$887United Airlines
Thu, May 14 - Thu, May 21
United Airlines Logo
2:33 pm - 9:40 am
FCA
-
LHR
12h 07m
1 stop
United Airlines Logo
7:30 am - 9:47 pm
LHR
-
FCA
21h 17m
2 stops
$933United Airlines
Thu, May 14 - Thu, May 21
United Airlines Logo
6:00 am - 10:00 am
FCA
-
LHR
21h 00m
2 stops
United Airlines Logo
7:30 am - 9:47 pm
LHR
-
FCA
21h 17m
2 stops
$936United Airlines
Thu, May 14 - Thu, May 21
United Airlines Logo
2:33 pm - 9:40 am
FCA
-
LHR
12h 07m
1 stop
United Airlines Logo
11:25 am - 9:47 pm
LHR
-
FCA
17h 22m
1 stop
$950United Airlines
Sat, Mar 28 - Sat, Apr 4
United Airlines Logo
2:41 pm - 10:35 am
FCA
-
LHR
37h 54m
2 stops
United Airlines Logo
3:30 pm - 9:27 pm
LHR
-
FCA
36h 57m
2 stops
$977United 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 72 hours.

In the past 3 days, the cheapest round-trip tickets from Kalispell to London Heathrow Airport were found on United Airlines ($861) and Delta ($1,046).

Find deals

Good to know

Cheapest flight$445
Most popular time to fly and prices are also 13% lower on average.
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 3 days, the lowest price for a flight from Kalispell to London Heathrow Airport was $445 for a one-way ticket and $861 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 9289 reviews
7.3Comfort
8.1Crew
7.1Entertainment
6.6Food
7.7Boarding
Airline reviews

Both the WIFI and entertainment did not work for 2.5h

6.0 GoodAnonymous, Feb 2026
HNL - NRT
Read more United Airlines reviews

Both the WIFI and entertainment did not work for 2.5h

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

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

Information on your arrival and departure airports

Kalispell (FCA)
Heathrow (LHR)