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$526+ Cheap flights from Montana to London (LON)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$724
(United Airlines)

One-way from

$526
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$1,293
From Montana to London (LON)
Search Deals
One-way flight from Montana to London (LON)
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Highest demand for flights based on searches. 24% potential increase in price ($298 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
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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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 10/159:47 amBTM - LHR
1 stop19h 33mUnited Airlines
Tue 10/212:05 pmLHR - BTM
2 stops39h 16mUnited Airlines
Deal found 6/11$724
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/181:37 pmBZN - LHR
1 stop13h 48mUnited Airlines
Wed 8/272:05 pmLHR - BZN
2 stops32h 09mUnited Airlines
Deal found 6/10$728
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/292:31 pmGTF - LHR
2 stops36h 04mUnited Airlines
Wed 10/82:05 pmLHR - GTF
2 stops38h 06mUnited Airlines
Deal found 6/10$728
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/252:30 pmHLN - LHR
1 stop12h 10mUnited Airlines
Tue 9/22:05 pmLHR - HLN
2 stops38h 06mUnited Airlines
Deal found 6/10$728
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 11/266:25 amMSO - LHR
1 stop20h 15mUnited Airlines
Wed 12/311:10 amLHR - MSO
2 stops36h 00mUnited Airlines
Deal found 6/10$734
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:25 amBZN - LHR
1 stop20h 55mDelta
Wed 10/86:15 amLHR - BZN
2 stops17h 23mDelta
Deal found 6/10$742
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:50 amMSO - LHR
1 stop18h 25mMultiple Airlines
Wed 12/33:00 pmLHR - MSO
1 stop15h 57mMultiple Airlines
Deal found 6/12$750
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/135:15 pmFCA - LHR
2 stops30h 05mUnited Airlines
Mon 9/221:30 pmLHR - FCA
2 stops37h 13mUnited Airlines
Deal found 6/11$761
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/13:52 pmBZN - LHR
1 stop15h 33mAmerican Airlines
Mon 9/88:50 amLHR - BZN
2 stops17h 27mAmerican Airlines
Deal found 6/10$769
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/265:35 amMSO - LHR
2 stops21h 40mDelta
Wed 12/36:20 amLHR - MSO
2 stops20h 52mDelta
Deal found 6/11$788
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 9/185:53 pmBIL - LHR
2 stops19h 47mUnited Airlines
Thu 9/255:40 pmLHR - BIL
2 stops36h 06mUnited Airlines
Deal found 6/10$789
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1911:46 amBZN - LHR
1 stop19h 29mKLM
Fri 9/2612:25 pmLHR - BZN
1 stop18h 33mKLM
Deal found 6/10$801

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated June 12, 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 10/15

9:47 am-12:20 pm

1 stop19h 33m

London Heathrow

Tue 10/21

2:05 pm-10:21 pm

2 stops39h 16m

$724

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Mon 8/18

1:37 pm-10:25 am

1 stop13h 48m

London Heathrow

Wed 8/27

2:05 pm-3:14 pm

2 stops32h 09m

$728

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

2:31 pm-9:35 am

2 stops36h 04m

London Heathrow

Wed 10/8

2:05 pm-9:11 pm

2 stops38h 06m

$728

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 8/25

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Tue 9/2

2:05 pm-9:11 pm

2 stops38h 06m

$728

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

6:25 am-9:40 am

1 stop20h 15m

London Heathrow

Wed 12/3

11:10 am-4:10 pm

2 stops36h 00m

$734

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 9/21

7:25 am-11:20 am

1 stop20h 55m

London Heathrow

Wed 10/8

6:15 am-4:38 pm

2 stops17h 23m

$742

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

10:50 am-12:15 pm

1 stop18h 25m

London Heathrow

Wed 12/3

3:00 pm-11:57 pm

1 stop15h 57m

$750

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Mon 9/1

3:52 pm-2:25 pm

1 stop15h 33m

London Heathrow

Mon 9/8

8:50 am-7:17 pm

2 stops17h 27m

$769

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

5:35 am-10:15 am

2 stops21h 40m

London Heathrow

Wed 12/3

6:20 am-8:12 pm

2 stops20h 52m

$788

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Thu 9/18

5:53 pm-8:40 pm

2 stops19h 47m

London Heathrow

Thu 9/25

5:40 pm-10:46 pm

2 stops36h 06m

$789

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 47 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 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

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

Currently, November is the cheapest month in which you can book a flight from Montana to London (average of $661). Flying from Montana to London in June is currently the most expensive (average of $1,108). 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 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and KLM from Montana to London to help guide your decision. In addition to providing an overall rating, 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

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

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

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

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

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

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

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

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
1,623 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

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?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $556. Air France flights start at $564 while deals on United Airlines start at $564 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 vacation 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, November is the cheapest month in which you can book a flight from Montana to London (average of $661). Flying from Montana to London in June is currently the most expensive (average of $1,108). 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

Traveling to a place near Montana?

Book flights to Montana if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Sutton
Aylesbury
Chelmsford
Brentwood
Chichester
Wembley
Arundel

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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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Top 3 airlines flying from Montana to London

Discover the top 3 airlines that operate flights from Montana to London. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$622Average$794FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$647Average$834FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$655Average$886FlexibilityNo cancel feeOn-time69%

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