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$377+ Cheap flights from Montana to the United Kingdom

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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Montana to United Kingdom

Keep the following information in mind while searching for Montana to United Kingdom flight deals. Data was last updated September 11, 2025.

Round-trip from

$617
(KLM)

One-way from

$377
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$839
From Montana to United Kingdom
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One-way flight from Montana to United Kingdom
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Highest demand for flights based on searches. 23% potential increase in price ($283 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Montana to United Kingdom

Cheapest flights from Montana to United Kingdom
Explore the most affordable flight options available from Montana to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This KLM deal was found by Cheapflights users on 9/10. 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.
Mon 10/201:07 pmMSO - LHR
1 stop13h 43mKLM
Tue 11/46:30 amLHR - MSO
2 stops22h 10mKLM
Deal found 9/10$617
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 9/291:05 pmGTF - LHR
1 stop13h 45mDelta
Wed 10/86:15 amLHR - GTF
2 stops18h 14mDelta
Deal found 9/9$621
This KLM deal was found by Cheapflights users on 9/9. 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.
Tue 11/117:25 amBZN - LHR
1 stop20h 05mKLM
Wed 11/196:30 amLHR - BZN
2 stops22h 59mKLM
Deal found 9/9$624
This Air France deal was found by Cheapflights users on 9/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/265:25 amMSO - LHR
1 stop21h 35mMultiple Airlines
Wed 12/38:40 amLHR - MSO
2 stops20h 12mMultiple Airlines
Deal found 9/10$624
This KLM deal was found by Cheapflights users on 9/9. 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.
Mon 11/31:08 pmGTF - LHR
1 stop13h 52mKLM
Thu 11/208:25 pmLHR - GTF
2 stops28h 05mKLM
Deal found 9/9$624
This Delta deal was found by Cheapflights users on 9/11. 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 10/155:35 amBZN - LHR
1 stop21h 15mDelta
Wed 10/229:55 amLHR - BZN
2 stops19h 19mDelta
Deal found 9/11$625
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 10/71:00 pmHLN - LHR
2 stops17h 30mDelta
Tue 10/146:30 amLHR - HLN
2 stops22h 46mDelta
Deal found 9/9$627
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 11/1111:40 amBZN - LHR
2 stops15h 35mDelta
Wed 11/198:40 amLHR - BZN
2 stops21h 54mDelta
Deal found 9/9$628
This Delta deal was found by Cheapflights users on 9/9. 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 10/151:07 pmMSO - LHR
2 stops17h 23mDelta
Wed 10/228:40 amLHR - MSO
2 stops20h 00mDelta
Deal found 9/9$628
This Delta deal was found by Cheapflights users on 9/11. 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 11/265:25 amMSO - LHR
2 stops20h 35mDelta
Wed 12/38:40 amLHR - MSO
2 stops20h 12mDelta
Deal found 9/11$629
This KLM deal was found by Cheapflights users on 9/9. 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.
Tue 11/41:08 pmGTF - LHR
1 stop13h 52mKLM
Wed 11/1910:45 amLHR - GTF
1 stop13h 45mKLM
Deal found 9/9$630
This Delta deal was found by Cheapflights users on 9/9. 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.
Mon 11/31:00 pmHLN - LHR
1 stop14h 00mDelta
Thu 11/2010:45 amLHR - HLN
1 stop18h 52mDelta
Deal found 9/9$630

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana to United Kingdom 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 September 11, 2025.
Use the filters below to find and compare flights from Montana to the United Kingdom that are best for you.

Fly from

Montana

Fly to

United Kingdom

Route

Depart

Return

Price

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 10/20

1:07 pm-9:50 am

1 stop13h 43m

London Heathrow

Tue 11/4

6:30 am-9:40 pm

2 stops22h 10m

$617

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

1:05 pm-9:50 am

1 stop13h 45m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$623

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

5:25 am-10:00 am

1 stop21h 35m

London Heathrow

Wed 12/3

6:30 am-9:52 pm

2 stops22h 22m

$624

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Wed 10/15

5:35 am-9:50 am

1 stop21h 15m

London Heathrow

Wed 10/22

9:55 am-10:14 pm

2 stops19h 19m

$625

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 9/30

5:40 am-11:00 am

2 stops22h 20m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$626

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 10/7

1:00 pm-1:30 pm

2 stops17h 30m

London Heathrow

Tue 10/14

6:30 am-10:16 pm

2 stops22h 46m

$627

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

5:25 am-9:00 am

2 stops20h 35m

London Heathrow

Wed 12/3

8:40 am-9:52 pm

2 stops20h 12m

$628

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 10/15

1:07 pm-1:30 pm

2 stops17h 23m

London Heathrow

Wed 10/22

8:40 am-9:40 pm

2 stops20h 00m

$628

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 1/13

8:00 am-7:05 am

1 stop16h 05m

London Heathrow

Tue 1/27

6:20 am-8:17 pm

2 stops20h 57m

$629

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 11/4

1:08 pm-10:00 am

1 stop13h 52m

London Heathrow

Tue 11/18

10:45 am-10:44 pm

1 stop18h 59m

$630

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 48 results
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Best time to book a flight from Montana to United Kingdom

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

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

Currently, November is the cheapest month in which you can book a flight from Montana to United Kingdom (average of $661). Flying from Montana to United Kingdom in June is currently the most expensive (average of $1,098). 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.

Related info for your journey

Find useful and relevant information for your journey from Montana to United Kingdom. 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 United Kingdom?

    Airlines like KLM, Delta, and United Airlines fly from Montana to United Kingdom in about 11h 55m. The time it takes to get you to your destination can typically vary by up to 1h 50m. The distance between Montana and United Kingdom is about 4473 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $378 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 $482 and $494, respectively.

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

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

  • How can I find direct flights from Montana to United Kingdom?

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

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

    Yes. Cheapflights offers flight deals from Montana to United Kingdom 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 United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Montana to United Kingdom (average of $661). Flying from Montana to United Kingdom in June is currently the most expensive (average of $1,098). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montana to United Kingdom

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 United Kingdom

Discover the top 3 airlines that operate flights from Montana to United Kingdom. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$645Average$930FlexibilityNo cancel feeOn-time69%
DeltaCheapest$700Average$942FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$799Average$799FlexibilityNo cancel feeOn-time75%

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