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Cheap flights from Montana to London from £446

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 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
18 Jun — 25 Jun1
1 adult

Cheap flight deals from Montana to London

Keep the following information in mind while searching for Montana to London flight deals. Data was last updated 13 June 2025.

Round-trip from

£533

One-way from

£446

Popular in

July

Cheapest in

February

Average price

£952
United Airlines
  • United Airlines
  • 15/10-21/10
  • 3 total stops
  • 58h 49m total
  • Montana to London
Search Deals
Delta
  • Delta
  • 16/10
  • 3 total stops
  • 22h 25m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£161 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from Montana to London

Cheapest flights from Montana to London
Explore the most affordable flight options available from Montana to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Wed 15/1009:47BTM - LHR
1 stop19h 33mUnited Airlines
Tue 21/1014:05LHR - BTM
2 stops39h 16mUnited Airlines
Deal found 11/6£533
Wed 15/1016:30BZN - LHR
1 stop12h 50mUnited Airlines
Tue 21/1014:05LHR - BZN
2 stops28h 34mUnited Airlines
Deal found 11/6£536
Mon 29/907:00GTF - LHR
1 stop22h 20mUnited Airlines
Wed 8/1014:05LHR - GTF
2 stops38h 06mUnited Airlines
Deal found 11/6£536
Mon 25/814:30HLN - LHR
1 stop14h 50mUnited Airlines
Tue 2/914:05LHR - HLN
2 stops38h 06mUnited Airlines
Deal found 11/6£536
Wed 26/1106:25MSO - LHR
1 stop20h 15mUnited Airlines
Wed 3/1211:10LHR - MSO
2 stops36h 00mUnited Airlines
Deal found 12/6£540
Sun 21/907:25BZN - LHR
1 stop20h 55mDelta
Wed 8/1006:15LHR - BZN
2 stops17h 23mDelta
Deal found 10/6£546
Wed 26/1110:50MSO - LHR
1 stop18h 25mMultiple Airlines
Wed 3/1215:00LHR - MSO
1 stop15h 57mMultiple Airlines
Deal found 12/6£552
Sat 13/917:15FCA - LHR
2 stops30h 05mUnited Airlines
Mon 22/913:30LHR - FCA
2 stops37h 13mUnited Airlines
Deal found 11/6£560
Sun 7/912:44BZN - LHR
1 stop13h 21mAmerican Airlines
Sun 14/908:50LHR - BZN
2 stops17h 29mAmerican Airlines
Deal found 12/6£567
Wed 26/1105:35MSO - LHR
2 stops21h 40mDelta
Wed 3/1206:20LHR - MSO
2 stops20h 52mDelta
Deal found 11/6£580
Fri 19/913:51MSO - LHR
1 stop13h 59mAmerican Airlines
Fri 3/1009:15LHR - MSO
1 stop21h 03mAmerican Airlines
Deal found 11/6£589
Sun 27/707:30BZN - LHR
1 stop15h 50mLufthansa
Sun 3/811:25LHR - BZN
1 stop17h 07mLufthansa
Deal found 12/6£590

Cheapflights Fare Finder

Customise your flight search to find flights from Montana to London 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 June 2025.
Use the filters below to find and compare flights from Montana to London that are best for you.

Fly from

Montana

Fly to

London

Route

Depart

Return

Price

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Wed 15/10

09:47-12:20

1 stop19h 33m

London Heathrow

Tue 21/10

14:05-22:21

2 stops39h 16m

£533

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Wed 15/10

16:30-12:20

1 stop12h 50m

London Heathrow

Tue 21/10

14:05-11:39

2 stops28h 34m

£536

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

07:00-12:20

1 stop22h 20m

London Heathrow

Wed 8/10

14:05-21:11

2 stops38h 06m

£536

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 25/8

14:30-06:30

2 stops33h 00m

London Heathrow

Tue 2/9

14:05-21:11

2 stops38h 06m

£536

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 26/11

06:25-09:40

1 stop20h 15m

London Heathrow

Wed 3/12

11:10-16:10

2 stops36h 00m

£540

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 21/9

07:25-11:20

1 stop20h 55m

London Heathrow

Tue 7/10

06:15-16:38

2 stops17h 23m

£546

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 26/11

10:50-12:15

1 stop18h 25m

London Heathrow

Wed 3/12

15:00-23:57

1 stop15h 57m

£552

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Sat 13/9

17:15-06:20

2 stops30h 05m

London Heathrow

Mon 22/9

13:30-19:43

2 stops37h 13m

£560

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 7/9

12:44-09:05

1 stop13h 21m

London Heathrow

Sun 14/9

08:50-19:19

2 stops17h 29m

£567

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 26/11

05:35-10:15

2 stops21h 40m

London Heathrow

Wed 3/12

06:20-20:12

2 stops20h 52m

£580

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 38 results
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Best time to book a flight from Montana to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, January is the cheapest month in which you can book a flight from Montana to London (average of £112). Flying from Montana to London in August is currently the most expensive (average of £164). 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 13 June 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and KLM from Montana to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very Good
7,946 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
KLM
7.8
Good
1,358 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Air France
7.5
Good
1,463 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
SWISS
7.5
Good
1,624 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

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

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

    One-way options have recently been found by users for as low as £446 on Delta. Other airlines that offer cheap prices include Air Canada from £751 and British Airways from £9,349 one-way.

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

    Most travelers choose Bozeman Gallatin Field - London Heathrow, Bozeman Gallatin Field - London City or Missoula Johnson-Bell Field - London Heathrow when deciding on the best route from Montana to London.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Montana to London 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?

    Currently, January is the cheapest month in which you can book a flight from Montana to London (average of £112). Flying from Montana to London in August is currently the most expensive (average of £164). 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 Montana?

Book flights to Montana if you plan to visit one of these locations
Deal
Hounslow
Croydon
Milton Keynes
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Southend-on-Sea
Watford
Hayes
Ipswich
Winchester
Folkestone
Maidstone
Dartford
Guildford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montana to London

See prices for flight routes from nearby airports that may be better suited for you.
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Users can book flights with no change fees policies with our dedicated filters. Book flights from Montana to London flexibly with Cheapflights today.

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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Montana today and book when prices fit your budget.

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