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Cheap flights from Montana to London Heathrow Airport from £236

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LHR
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Find 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 27 November 2025.

Fri 5/1211:45BZN - LHR
1 stop15h 15mDelta
Tue 9/1206:20LHR - BZN
2 stops24h 17mDelta
Deal found 26/11£484
Fri 5/1206:25BIL - LHR
1 stop17h 40mDelta
Tue 9/1206:20LHR - BIL
2 stops24h 28mDelta
Deal found 26/11£484
Fri 5/1205:00FCA - LHR
2 stops19h 50mDelta
Tue 9/1208:40LHR - FCA
2 stops39h 45mDelta
Deal found 25/11£489
Fri 5/1211:45BZN - LHR
1 stop15h 15mVirgin Atlantic
Tue 9/1210:45LHR - BZN
1 stop20h 33mVirgin Atlantic
Deal found 26/11£489
Fri 5/1206:25BIL - LHR
1 stop17h 40mVirgin Atlantic
Tue 9/1211:05LHR - BIL
1 stop19h 43mVirgin Atlantic
Deal found 26/11£489
Fri 5/1214:30HLN - LHR
1 stop12h 10mUnited Airlines
Tue 9/1207:30LHR - HLN
2 stops20h 52mUnited Airlines
Deal found 26/11£495
Fri 5/1206:15FCA - LHR
1 stop20h 25mUnited Airlines
Tue 9/1211:35LHR - FCA
1 stop17h 11mUnited Airlines
Deal found 26/11£509
Fri 12/1214:37FCA - LHR
2 stops22h 58mUnited Airlines
Tue 16/1216:20LHR - FCA
2 stops50h 16mUnited Airlines
Deal found 25/11£587
Thu 11/1210:49BZN - LHR
1 stop15h 51mLufthansa
Thu 18/1213:35LHR - BZN
1 stop15h 54mLufthansa
Deal found 24/11£600
Sun 30/1106:20MSO - LHR
1 stop20h 20mUnited Airlines
Mon 8/1218:00LHR - MSO
2 stops34h 18mUnited Airlines
Deal found 26/11£628
Fri 5/1206:15GTF - LHR
2 stops22h 00mUnited Airlines
Tue 9/1206:30LHR - GTF
2 stops22h 02mUnited Airlines
Deal found 25/11£628
Wed 26/1106:20MSO - LHR
1 stop20h 20mUnited Airlines
Wed 3/1213:00LHR - MSO
2 stops39h 18mUnited Airlines
Deal found 25/11£632

Cheap flight deals from Montana to Heathrow

Keep the following information in mind while searching for Montana to Heathrow flight deals. Data was last updated 27 November 2025.

Round-trip from

£461

One-way from

£236

Popular in

December

Cheapest in

October

Average price

£564
American Airlines
  • American Airlines
  • 15/1-12/3
  • 3 total stops
  • 34h 00m total
  • Montana to London
Search Deals
3/3
  • 3/3
  • 3 total stops
  • 38h 48m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 27 November 2025.
Use the filters below to find and compare flights from Montana to London Heathrow Airport that are best for you.

Fly from

Montana

Fly to

Heathrow

Route

Depart

Return

Price

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Thu 15/1

15:03-12:20

1 stop14h 17m

London Heathrow

Thu 12/3

07:30-20:37

2 stops19h 07m

£461

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Thu 15/1

13:42-11:35

1 stop14h 53m

London Heathrow

Thu 12/3

07:30-20:37

2 stops19h 07m

£461

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 14/4

14:00-13:30

1 stop16h 30m

London Heathrow

Tue 28/4

08:40-22:24

2 stops20h 44m

£464

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/4

12:10-09:50

1 stop14h 40m

London Heathrow

Thu 30/4

10:55-17:42

1 stop13h 47m

£468

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Fri 16/1

07:55-07:05

1 stop16h 10m

London Heathrow

Tue 20/1

20:25-20:14

2 stops30h 49m

£472

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/4

12:44-12:10

2 stops16h 26m

London Heathrow

Thu 30/4

16:30-23:58

1 stop14h 28m

£472

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Fri 23/1

18:10-20:10

2 stops19h 00m

London Heathrow

Tue 27/1

10:00-17:11

2 stops38h 11m

£472

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Thu 15/1

07:23-10:30

1 stop20h 07m

London Heathrow

Thu 12/3

11:05-20:14

1 stop15h 09m

£476

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Thu 8/1

13:21-08:15

1 stop11h 54m

London Heathrow

Thu 15/1

11:55-20:45

1 stop15h 50m

£476

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Fri 9/1

09:14-09:40

1 stop17h 26m

London Heathrow

Fri 16/1

18:00-22:45

2 stops35h 45m

£478

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 41 results
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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

What is the cheapest month to book a flight from Montana to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Montana to London Heathrow Airport (average of £458). Flying from Montana to London Heathrow Airport in June is currently the most expensive (average of £875). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight 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?

    Airlines like American Airlines, Delta, and KLM fly from Montana to London Heathrow Airport in about 14h 40m. The time it takes to get you to your destination can typically vary by up to 1h 50m. Airlines will cover a distance of 4512 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Montana to London Heathrow Airport one-way?

    £286 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on United Airlines and Lufthansa, with prices starting from £287 and £527, respectively.

  • 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, Kalispell Glacier Park - London Heathrow and Missoula Johnson-Bell Field - 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.

  • What is the cheapest month to book a flight from Montana to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Montana to London Heathrow Airport (average of £458). Flying from Montana to London Heathrow Airport in June is currently the most expensive (average of £875). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Slough
Croydon
Hounslow
Northampton
Gatwick
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Brentford
Winchester
Swindon
Crawley
Romford
Chichester
Bedford

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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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O'Hare Intl to London City 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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