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Heathrow

$325+ Cheap flights from Montana 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LHR
Aug 21 — Aug 281
Fri 8/21
Fri 8/28
1 adult, Economy
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Cheap flight deals from Montana to Heathrow

Cheapest flights from Montana to Heathrow
Explore the most affordable flight options available from Montana to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.

This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:30 am
GTF
-
LHR
2 stops17h 40m
United Airlines
Wed 11/116:35 am
LHR
-
GTF
2 stops22h 12m
United Airlines
Deal found 7/20$754
This eDestinos deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:30 pm
BZN
-
LHR
1 stop13h 50m
Virgin Atlantic
Mon 10/2611:45 am
LHR
-
BZN
2 stops42h 12m
Virgin Atlantic
Deal found 7/19$830
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:19 pm
BZN
-
LHR
1 stop34h 51m
United Airlines
Thu 10/227:30 am
LHR
-
BZN
2 stops20h 34m
United Airlines
Deal found 7/19$832
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:54 pm
BIL
-
LHR
1 stop32h 46m
United Airlines
Wed 12/29:30 am
LHR
-
BIL
2 stops38h 49m
United Airlines
Deal found 7/20$832
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:30 am
GTF
-
LHR
2 stops19h 40m
United Airlines
Mon 11/167:30 am
LHR
-
GTF
2 stops21h 17m
United Airlines
Deal found 7/20$865
This Cheapflightsfares deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:41 am
BZN
-
LHR
2 stops19h 19m
Lufthansa
Tue 11/176:35 am
LHR
-
BZN
2 stops21h 32m
Lufthansa
Deal found 7/21$870
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:00 am
BTM
-
LHR
1 stop16h 40m
United Airlines
Fri 11/66:35 am
LHR
-
BTM
2 stops22h 56m
United Airlines
Deal found 7/21$874
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:30 pm
BZN
-
LHR
1 stop17h 00m
United Airlines
Tue 11/176:35 am
LHR
-
BZN
2 stops21h 32m
United Airlines
Deal found 7/21$877
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:34 pm
HLN
-
LHR
1 stop12h 06m
United Airlines
Fri 11/136:35 am
LHR
-
HLN
2 stops22h 04m
United Airlines
Deal found 7/21$877
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:39 pm
GTF
-
LHR
1 stop12h 01m
United Airlines
Fri 11/136:35 am
LHR
-
GTF
2 stops22h 12m
United Airlines
Deal found 7/17$879
This Cheapflightsfares deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:29 pm
BIL
-
LHR
2 stops19h 21m
Lufthansa
Tue 11/177:40 am
LHR
-
BIL
2 stops20h 24m
Lufthansa
Deal found 7/21$880
This Alaska Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:59 pm
BZN
-
LHR
1 stop13h 06m
Alaska Airlines
Fri 10/235:00 pm
LHR
-
BZN
1 stop23h 40m
Alaska Airlines
Deal found 7/19$881

Find flight deals from Montana to Heathrow

Keep the following information in mind while searching for Montana to Heathrow flight deals. Data was last updated July 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$754
(United Airlines)

One-way from

$325
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,511
Provider with most accurate pricing for Bozeman Gallatin Field-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-London (LON) flights.
Search Deals
From Montana to London Heathrow
Search Deals
One-way flight from Montana to London Heathrow
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 22, 2026.
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

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 11/9

6:30 am-7:10 am

2 stops17h 40m

London Heathrow

Wed 11/11

6:35 am-9:47 pm

2 stops22h 12m

$754

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Mon 11/2

10:00 am-9:40 am

1 stop16h 40m

London Heathrow

Fri 11/6

6:35 am-10:31 pm

2 stops22h 56m

$874

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 11/9

2:34 pm-9:40 am

1 stop12h 06m

London Heathrow

Fri 11/13

6:35 am-9:39 pm

2 stops22h 04m

$877

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 11/16

6:50 am-6:50 am

1 stop17h 00m

London Heathrow

Thu 11/19

6:15 am-8:32 pm

2 stops21h 17m

$882

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 11/9

2:39 pm-7:10 am

2 stops33h 31m

London Heathrow

Fri 11/13

6:35 am-9:47 pm

2 stops22h 12m

$882

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Wed 11/11

10:00 am-9:40 am

1 stop16h 40m

London Heathrow

Mon 11/16

4:40 pm-10:31 pm

2 stops36h 51m

$885

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 11/9

2:05 pm-12:20 pm

1 stop15h 15m

London Heathrow

Wed 11/11

2:45 pm-11:59 pm

1 stop16h 14m

$888

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 11/9

2:05 pm-12:20 pm

1 stop15h 15m

London Heathrow

Thu 12/10

2:45 pm-11:59 pm

1 stop16h 14m

$888

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 11/11

11:55 am-12:20 pm

1 stop17h 25m

London Heathrow

Wed 11/18

2:45 pm-10:43 pm

1 stop14h 58m

$888

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 11/11

11:55 am-12:20 pm

1 stop17h 25m

London Heathrow

Tue 11/17

2:45 pm-10:43 pm

1 stop14h 58m

$888

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Showing 1-10 of 57 resultsSorted by cheapest first
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Best time to book a flight from Montana to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Montana 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 Montana to London Heathrow Airport

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

Related info for your journey

Find useful and relevant information for your journey from Montana to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montana to London Heathrow Airport?

    Departing from Montana to London Heathrow Airport will take you 15h 15m. There are 4512 mi between Montana and London Heathrow Airport. This flight may include one or multiple stops.

  • What are the most popular routes from Montana to London Heathrow Airport?

    The most popular flight routes from Montana to London Heathrow Airport are Bozeman Gallatin Field - London Heathrow, Missoula Johnson-Bell Field - London Heathrow and Billings Logan Intl - London Heathrow.

  • Can I find deals for flights from Montana to Heathrow that include hotel bookings?

    Yes. In addition to deals on Montana to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Heathrow.

  • Can I find deals for business class flights from Montana to Heathrow?

    Yes. Cheapflights offers flight deals from Montana 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.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Wembley
Harrow
Eastleigh
Southend-on-Sea
Watford
Northampton
Dartford
Chipping Norton
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton
Luton

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Top 2 airlines flying from Montana to Heathrow

Discover the top 2 airlines that operate flights from Montana to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$556Average$1,036FlexibilityNo cancel feeOn-time69%
DeltaCheapest$604Average$1,019FlexibilityNo cancel feeOn-timeN/A

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