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Cheap flights from Montana to London Heathrow Airport from £213

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 26/7. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LHR
12 Apr — 19 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montana to Heathrow

Enter your travel dates to find the best prices.

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 13 March 2026.

Tue 8/907:15
MSO
-
LHR
1 stop19h 55m
United Airlines
Tue 22/914:05
LHR
-
MSO
2 stops30h 22m
United Airlines
Deal found 9/3£551
Fri 13/1117:32
MSO
-
LHR
2 stops55h 58m
United Airlines
Tue 17/1111:10
LHR
-
MSO
2 stops41h 16m
United Airlines
Deal found 8/3£565
Wed 19/806:15
MSO
-
LHR
2 stops30h 25m
United Airlines
Fri 21/813:05
LHR
-
MSO
1 stop16h 25m
United Airlines
Deal found 9/3£565
Fri 13/1114:25
GTF
-
LHR
1 stop12h 15m
United Airlines
Tue 17/1106:35
LHR
-
GTF
2 stops37h 54m
United Airlines
Deal found 8/3£582
Wed 18/1110:00
BTM
-
LHR
1 stop16h 40m
United Airlines
Sun 22/1107:30
LHR
-
BTM
2 stops21h 57m
United Airlines
Deal found 8/3£586
Wed 15/417:15
MSO
-
LHR
1 stop12h 20m
United Airlines
Wed 22/406:55
LHR
-
MSO
2 stops21h 35m
United Airlines
Deal found 8/3£589
Sun 16/817:32
MSO
-
LHR
1 stop11h 48m
United Airlines
Wed 26/809:30
LHR
-
MSO
2 stops20h 00m
United Airlines
Deal found 9/3£590
Sat 15/817:32
MSO
-
LHR
2 stops20h 08m
United Airlines
Wed 26/807:30
LHR
-
MSO
2 stops22h 00m
United Airlines
Deal found 9/3£593
Fri 17/414:30
GTF
-
LHR
2 stops59h 05m
United Airlines
Fri 8/507:25
LHR
-
GTF
2 stops37h 09m
United Airlines
Deal found 8/3£596
Mon 27/406:15
GTF
-
LHR
1 stop20h 25m
United Airlines
Fri 15/507:30
LHR
-
GTF
2 stops20h 48m
United Airlines
Deal found 8/3£598
Tue 14/414:30
GTF
-
LHR
1 stop12h 10m
United Airlines
Thu 7/517:40
LHR
-
GTF
2 stops34h 38m
United Airlines
Deal found 8/3£599
Tue 14/406:15
GTF
-
LHR
1 stop23h 10m
United Airlines
Tue 5/511:25
LHR
-
GTF
1 stop16h 53m
United Airlines
Deal found 8/3£610

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 13 March 2026.

Round-trip from

£551

One-way from

£213

Popular in

June

Cheapest in

October

Average price

£807
United Airlines
  • United Airlines
  • 8/9-22/9
  • 3 total stops
  • 50h 17m total
  • Montana to London
Search Deals
United Airlines
  • United Airlines
  • 26/7
  • 1 total stop
  • 23h 05m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£71 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 13 March 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 return flight

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 8/9

07:15-11:50

2 stops21h 35m

London Heathrow

Tue 22/9

14:05-13:27

2 stops30h 22m

£595
Fastest return journey

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Thu 3/9

17:32-12:20

1 stop11h 48m

London Heathrow

Tue 15/9

14:50-21:26

1 stop13h 36m

£637

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 3/5

06:15-09:40

1 stop20h 25m

London Heathrow

Sun 10/5

14:50-21:18

1 stop13h 28m

£648

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 19/4

14:30-09:40

1 stop12h 10m

London Heathrow

Sun 10/5

14:50-21:18

1 stop13h 28m

£648

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 15/4

14:30-09:40

1 stop12h 10m

London Heathrow

Sat 9/5

14:50-21:18

1 stop13h 28m

£648

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 29/4

14:38-09:40

1 stop12h 02m

London Heathrow

Fri 8/5

11:25-21:30

1 stop17h 05m

£649

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Fri 1/5

17:08-06:35

2 stops54h 27m

London Heathrow

Tue 19/5

14:50-21:30

1 stop13h 40m

£660

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 1/9

14:25-09:40

1 stop12h 15m

London Heathrow

Tue 15/9

06:55-22:51

2 stops22h 56m

£661

CodyLondon

COD - LHR

CODLHR

Cody E.E. Faust

Fri 17/4

06:20-12:25

1 stop23h 05m

London Heathrow

Tue 21/4

07:30-22:45

2 stops22h 15m

£665

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sat 5/9

17:57-09:40

1 stop32h 43m

London Heathrow

Wed 16/9

07:25-09:41

2 stops33h 16m

£669

Flights are sorted by cheapest return flights first.

Deals found on 10/3

Showing 1-10 of 46 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 return 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
No data available for this route at this time. Please check back soon.

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?

    Airlines like United Airlines, KLM, and Delta fly from Montana to London Heathrow Airport in about 15h 42m. The time it takes to get you to your destination can typically vary by up to 5h 53m. Airlines will cover a distance of 4512 mi. 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 Great Falls - 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 holiday 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Chelmsford
Eastbourne
Ipswich
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montana to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Boston to Stansted flights
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Los Angeles to Stansted flights
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Los Angeles to Gatwick flights
Philadelphia to Heathrow flights
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Denver to Heathrow flights
O'Hare Intl to Gatwick flights
Los Angeles to London City flights
San Francisco to Gatwick flights
O'Hare Intl to London City flights
George Bush Intcntl to Heathrow flights
O'Hare Intl to Stansted flights
Minneapolis to Heathrow flights
San Francisco to London City flights
Detroit to Heathrow flights
Tampa to Heathrow flights
Dallas/Fort Worth to Gatwick flights
Seattle to Gatwick flights
LaGuardia to Stansted flights

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How does Cheapflights help users find flights from Montana to Heathrow?

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Need flexible booking options for your flight to Heathrow from Montana? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Not ready to book yet? You can track prices for flights from Montana to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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