What airlines fly to London Heathrow Airport?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to London Heathrow Airport from Montana according to our data. United Airlines is the first choice among our users, with 71% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 3 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to London Heathrow Airport?

On average, it takes 11h 55m to fly from Montana to London Heathrow Airport if you fly out of Great Falls (the most popular airport in Montana) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Missoula and into London Heathrow Airport, then the flight time is around 12h 03m.

What is the cheapest airline that flies from Montana to London Heathrow?

United Airlines, Air France, and Alaska Airlines are the most popular carriers operating from Montana to London Heathrow

When did momondo last update prices for flights from Montana to London Heathrow Airport?

Prices for flights from Montana to London Heathrow Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Montana to London Heathrow Airport?

There are 3 operators available for flights from Montana to London Heathrow Airport as of September 2026.

How old do you have to be to fly from Montana to London Heathrow Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$324 Cheap Flights from Montana to London Heathrow Airport in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montana to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:58 pm - 10:40 amBIL Billings Logan Intl-LHR London Heathrow

15h 42m2 stops Salt Lake City Seattle/Tacoma Intl

6:20 am - 5:49 pmLHR London Heathrow-BIL Billings Logan Intl

18h 29m2 stops Paris Charles de Gaulle Salt Lake City

$739Air France

Tue, Oct 27 - Tue, Nov 3

12:58 pm - 10:00 amBIL Billings Logan Intl-LHR London Heathrow

15h 02m1 stop Salt Lake City

6:20 am - 8:15 pmLHR London Heathrow-BIL Billings Logan Intl

20h 55m2 stops Paris Charles de Gaulle Minneapolis St Paul

$739Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

7:32 pm - 12:20 pmBIL Billings Logan Intl-LHR London Heathrow

34h 48m1 stop Seattle/Tacoma Intl

2:45 pm - 11:15 amLHR London Heathrow-BIL Billings Logan Intl

27h 30m1 stop Seattle/Tacoma Intl

$743Alaska Airlines

Tue, Oct 27 - Tue, Nov 3

2:00 pm - 1:05 pmBZN Bozeman Gallatin Field-LHR London Heathrow

16h 05m1 stop Minneapolis St Paul

8:10 pm - 11:57 pmLHR London Heathrow-BZN Bozeman Gallatin Field

33h 47m2 stops New York John F Kennedy Intl Minneapolis St Paul

$744Virgin Atlantic

Thu, Oct 22 - Mon, Oct 26

6:23 am - 6:45 amBIL Billings Logan Intl-LHR London Heathrow

17h 22m2 stops Minneapolis St Paul Boston Logan Intl

8:05 pm - 8:15 pmLHR London Heathrow-BIL Billings Logan Intl

31h 10m2 stops New York John F Kennedy Intl Minneapolis St Paul

$746Delta

Mon, Sep 28 - Tue, Oct 13

12:57 pm - 10:00 amBIL Billings Logan Intl-LHR London Heathrow

14h 03m1 stop Salt Lake City

8:05 pm - 8:15 pmLHR London Heathrow-BIL Billings Logan Intl

31h 10m2 stops New York John F Kennedy Intl Minneapolis St Paul

$746Delta

Mon, Sep 28 - Tue, Oct 13

2:10 pm - 12:20 pmFCA Kalispell Glacier Park-LHR London Heathrow

15h 10m1 stop Seattle/Tacoma Intl

2:45 pm - 11:59 pmLHR London Heathrow-FCA Kalispell Glacier Park

16h 14m1 stop Seattle/Tacoma Intl

$756Alaska Airlines

Tue, Mar 2 - Fri, Mar 5

2:03 pm - 12:20 pmBIL Billings Logan Intl-LHR London Heathrow

15h 17m1 stop Seattle/Tacoma Intl

2:45 pm - 12:08 amLHR London Heathrow-BIL Billings Logan Intl

16h 23m1 stop Seattle/Tacoma Intl

$756Alaska Airlines

Tue, Mar 2 - Fri, Mar 5

5:51 pm - 6:40 amBIL Billings Logan Intl-LHR London Heathrow

29h 49m2 stops Denver Intl Washington, D.C. Dulles Intl

6:35 am - 9:51 amLHR London Heathrow-BIL Billings Logan Intl

34h 16m2 stops Munich Franz Josef Strauss Denver Intl

$769United Airlines

Tue, Mar 2 - Fri, Mar 5

5:51 pm - 7:40 amBIL Billings Logan Intl-LHR London Heathrow

30h 49m2 stops Denver Intl Houston George Bush Intcntl

6:35 am - 9:51 amLHR London Heathrow-BIL Billings Logan Intl

34h 16m2 stops Munich Franz Josef Strauss Denver Intl

$769United Airlines

Tue, Mar 2 - Fri, Mar 5

Cheap last minute flights

Enter your travel dates to find the best prices.

1:27 pm - 1:15 pmMSO Missoula Johnson-Bell Field-LHR London Heathrow

16h 48m2 stops Salt Lake City Atlanta Hartsfield-Jackson

8:40 am - 11:42 pmLHR London Heathrow-MSO Missoula Johnson-Bell Field

22h 02m2 stops Amsterdam Schiphol Minneapolis St Paul

$1,082KLM

Wed, Sep 16 - Mon, Sep 28

1:27 pm - 1:15 pmMSO Missoula Johnson-Bell Field-LHR London Heathrow

16h 48m2 stops Salt Lake City Atlanta Hartsfield-Jackson

12:25 pm - 11:42 pmLHR London Heathrow-MSO Missoula Johnson-Bell Field

18h 17m1 stop Minneapolis St Paul

$1,112KLM

Wed, Sep 16 - Mon, Sep 28

4:16 pm - 3:05 pmMSO Missoula Johnson-Bell Field-LHR London Heathrow

15h 49m1 stop Seattle/Tacoma Intl

5:00 pm - 3:17 pmLHR London Heathrow-MSO Missoula Johnson-Bell Field

29h 17m1 stop Seattle/Tacoma Intl

$1,113Alaska Airlines

Wed, Sep 16 - Mon, Sep 28

2:26 pm - 9:20 pmHLN Helena-LHR London Heathrow

23h 54m2 stops Denver Intl Newark

6:55 am - 9:18 pmLHR London Heathrow-HLN Helena

21h 23m2 stops Munich Franz Josef Strauss Denver Intl

$1,409United Airlines

Sat, Sep 19 - Thu, Sep 24

2:26 pm - 9:20 pmHLN Helena-LHR London Heathrow

23h 54m2 stops Denver Intl Newark

2:50 pm - 9:18 pmLHR London Heathrow-HLN Helena

13h 28m1 stop Denver Intl

$1,438United Airlines

Sat, Sep 19 - Thu, Sep 24

5:18 pm - 7:40 amHLN Helena-LHR London Heathrow

31h 22m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl

4:35 pm - 4:41 pmLHR London Heathrow-HLN Helena

31h 06m2 stops Newark Seattle/Tacoma Intl

$1,451Multiple Airlines

Sat, Sep 19 - Fri, Sep 25

5:18 pm - 3:05 pmHLN Helena-LHR London Heathrow

14h 47m1 stop Seattle/Tacoma Intl

5:00 pm - 4:41 pmLHR London Heathrow-HLN Helena

30h 41m1 stop Seattle/Tacoma Intl

$1,472Alaska Airlines

Sat, Sep 19 - Fri, Sep 25

12:57 pm - 10:00 amHLN Helena-LHR London Heathrow

14h 03m1 stop Salt Lake City

10:55 am - 10:24 pmLHR London Heathrow-HLN Helena

18h 29m1 stop Salt Lake City

$1,483Delta

Sat, Sep 19 - Thu, Sep 24

3:35 pm - 1:45 pmMSO Missoula Johnson-Bell Field-LHR London Heathrow

15h 10m2 stops Minneapolis St Paul Paris Charles de Gaulle

11:45 am - 11:42 pmLHR London Heathrow-MSO Missoula Johnson-Bell Field

18h 57m2 stops New York John F Kennedy Intl Minneapolis St Paul

$3,305Delta

Fri, Sep 18 - Tue, Sep 29

6:00 am - 7:40 amMSO Missoula Johnson-Bell Field-LHR London Heathrow

18h 40m2 stops Minneapolis St Paul Amsterdam Schiphol

11:45 am - 11:42 pmLHR London Heathrow-MSO Missoula Johnson-Bell Field

18h 57m2 stops New York John F Kennedy Intl Minneapolis St Paul

$3,316Delta

Fri, Sep 18 - Tue, Sep 29

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Scandinavian Airlines flights from Montana to London Heathrow Airport

Our best Scandinavian Airlines deals on Montana to London Heathrow Airport flight tickets

Scandinavian Airlines

Oct 13

BZN3:34 pmBozeman Gallatin Field

12h 46m

1 stop

LHR11:20 amLondon Heathrow

Oct 20

LHR11:45 amLondon Heathrow

17h 52m

2 stops

BZN10:37 pmBozeman Gallatin Field

$819

Scandinavian Airlines

Mar 10

BZN8:30 amBozeman Gallatin Field

19h 10m

1 stop

LHR10:40 amLondon Heathrow

Mar 16

LHR6:20 amLondon Heathrow

22h 01m

2 stops

BZN10:21 pmBozeman Gallatin Field

$828

Scandinavian Airlines

Nov 8

MSO8:33 amMissoula Johnson-Bell Field

15h 32m

1 stop

LHR7:05 amLondon Heathrow

Nov 14

LHR5:35 pmLondon Heathrow

37h 47m

2 stops

MSO12:22 amMissoula Johnson-Bell Field

$882

Delta flights from Montana to London Heathrow Airport

Our best Delta deals on Montana to London Heathrow Airport flight tickets

Delta

Sep 28

BIL6:23 amBillings Logan Intl

17h 22m

2 stops

LHR6:45 amLondon Heathrow

Oct 13

LHR8:05 pmLondon Heathrow

31h 10m

2 stops

BIL8:15 pmBillings Logan Intl

$746

Delta

Oct 7

BZN8:25 amBozeman Gallatin Field

19h 55m

1 stop

LHR11:20 amLondon Heathrow

Oct 14

LHR6:15 amLondon Heathrow

18h 36m

2 stops

BZN5:51 pmBozeman Gallatin Field

$749

Delta

Oct 27

MSO5:30 amMissoula Johnson-Bell Field

20h 15m

2 stops

LHR7:45 amLondon Heathrow

Nov 3

LHR6:30 amLondon Heathrow

20h 24m

2 stops

MSO7:54 pmMissoula Johnson-Bell Field

$753

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Tue 10/27

12:58 pm-10:40 am

2 stops15h 42m

London Heathrow

Tue 11/3

6:20 am-5:49 pm

2 stops18h 29m

$739

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Tue 10/27

12:58 pm-10:00 am

1 stop15h 02m

London Heathrow

Tue 11/3

6:20 am-8:15 pm

2 stops20h 55m

$739

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Tue 10/27

7:32 pm-12:20 pm

1 stop34h 48m

London Heathrow

Tue 11/3

2:45 pm-11:15 am

1 stop27h 30m

$743

BozemanLondon

BZN Bozeman Gallatin Field - LHR London Heathrow

BZNLHR

Bozeman Gallatin Field

Thu 10/22

2:00 pm-1:05 pm

1 stop16h 05m

London Heathrow

Mon 10/26

8:10 pm-11:57 pm

2 stops33h 47m

$744

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Mon 9/28

6:23 am-6:45 am

2 stops17h 22m

London Heathrow

Tue 10/13

8:05 pm-8:15 pm

2 stops31h 10m

$746

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Mon 9/28

12:57 pm-10:00 am

1 stop14h 03m

London Heathrow

Tue 10/13

8:05 pm-8:15 pm

2 stops31h 10m

$746

Quickest round-trip

KalispellLondon

FCA Kalispell Glacier Park - LHR London Heathrow

FCALHR

Kalispell Glacier Park

Tue 3/2

2:10 pm-12:20 pm

1 stop15h 10m

London Heathrow

Fri 3/5

2:45 pm-11:59 pm

1 stop16h 14m

$756

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Tue 3/2

2:03 pm-12:20 pm

1 stop15h 17m

London Heathrow

Fri 3/5

2:45 pm-12:08 am

1 stop16h 23m

$756

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Tue 3/2

5:51 pm-6:40 am

2 stops29h 49m

London Heathrow

Fri 3/5

6:35 am-9:51 am

2 stops34h 16m

$769

BillingsLondon

BIL Billings Logan Intl - LHR London Heathrow

BILLHR

Billings Logan Intl

Tue 3/2

5:51 pm-7:40 am

2 stops30h 49m

London Heathrow

Fri 3/5

6:35 am-9:51 am

2 stops34h 16m

$769

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Montana, with most prices found around $0. If you’re not able to fly to London Heathrow Airport in February, then March is your next best option. Flight prices from Montana to London Heathrow Airport during March average around $825.

Can stopping save me money on Montana to London Heathrow Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a Montana to London Heathrow Airport flight.

Cheap Montana to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to London Heathrow Airport

Best Price Found	$324
Fastest flight time	11h 55m
Direct flights	None

The best one-way flight to London Heathrow Airport from Montana in the past 72 hours is $324. The best round-trip flight deal from Montana to London Heathrow Airport found on momondo in the last 72 hours is $739.

The fastest flight from Montana to London Heathrow Airport takes 11h 55m

There are no direct flights from Montana to London Heathrow Airport. There are no popular flight routes from Montana to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from Montana to London Heathrow Airport

When did momondo last update prices for flights from Montana to London Heathrow Airport?
Prices for flights from Montana to London Heathrow Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Montana to London Heathrow Airport?
There are 3 operators available for flights from Montana to London Heathrow Airport as of September 2026.
How old do you have to be to fly from Montana to London Heathrow Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Montana to London Heathrow Airport

Compare and see reviews for airlines that fly from Montana to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $556	Free Cancellation	Rating 7.4 10,216 reviews	Search United Airlines flights
Delta	PriceFrom $604	Free Cancellation	Rating 7.8 8,570 reviews	Search Delta flights
Alaska Airlines	PriceFrom $897	Free Cancellation	Rating 7.9 12,930 reviews	Search Alaska Airlines flights

Hounslow

Gatwick

Milton Keynes

Stratford-upon-Avon

Hayes

Luton

Wembley

Dover

Croydon

Richmond

Kingston upon Thames

Stansted

Harrow

Cobham

Watford

Worthing

Slough

Eastbourne

Hook

Uxbridge

Why use momondo?

Why should I use momondo to find a flight deal from Montana to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Montana to London for you.

Can I find flights from Montana to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Montana with this policy.

How can momondo help me find flights from Montana to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Montana.

I’m not ready to book a flight from Montana to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Montana and alert you when they change.

An easier way to manage your London Heathrow Airport trip

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Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $380

Flights to London Stansted Airportfrom $444

Flights to London City Airportfrom $580

Flights to London Luton Airportfrom $413

Flights to Glasgow Intl Airportfrom $483

Flights to Belfast Intl Airportfrom $669

Flights to London Southend Airportfrom $566

Flights to Belfast City Airportfrom $669

Cheap flights from Montana to London from $324

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to London departing on 2/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Montana to London

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Big names and deals

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Scandinavian Airlines flights from Montana to London Heathrow Airport

Our best Scandinavian Airlines deals on Montana to London Heathrow Airport flight tickets

Delta flights from Montana to London Heathrow Airport

Our best Delta deals on Montana to London Heathrow Airport flight tickets

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from Montana to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

Can stopping save me money on Montana to London Heathrow Airport flights?

What is the cheapest airline that flies from Montana to London Heathrow?

What airlines fly to London Heathrow Airport?

How long does it take to fly to London Heathrow Airport?

Cheap Montana to London Heathrow Airport flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Montana to London Heathrow Airport

Best airlines flying from Montana to London Heathrow Airport

Compare and see reviews for airlines that fly from Montana to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular cities in the United Kingdom

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According to popular flight searches on momondo this year

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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