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$295+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
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 August 21, 2025.

Round-trip from

$618
(KLM)

One-way from

$295
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$891
From Montana to London (LON)
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One-way flight from Montana to London (LON)
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Highest demand for flights based on searches. 24% potential increase in price ($297 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 21, 2025.

This KLM deal was found by Cheapflights users on 8/21. 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.
Wed 11/121:10 pmGTF - LHR
1 stop13h 50mMultiple Airlines
Thu 12/46:20 amLHR - GTF
2 stops18h 22mMultiple Airlines
Deal found 8/21$618
This KLM deal was found by Cheapflights users on 8/21. 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.
Wed 11/121:10 pmGTF - LHR
1 stop13h 50mKLM
Wed 12/38:25 pmLHR - GTF
2 stops28h 17mKLM
Deal found 8/21$619
This Delta deal was found by Cheapflights users on 8/21. 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 10/17:35 amBZN - LHR
1 stop23h 40mDelta
Fri 10/106:15 amLHR - BZN
2 stops24h 22mDelta
Deal found 8/21$622
This Delta deal was found by Cheapflights users on 8/21. 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 11/268:00 amMSO - LHR
1 stop16h 05mDelta
Wed 12/36:20 amLHR - MSO
2 stops20h 52mDelta
Deal found 8/21$622
This Delta deal was found by Cheapflights users on 8/21. 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 9/296:11 pmGTF - LHR
2 stops29h 14mDelta
Wed 10/86:15 amLHR - GTF
2 stops18h 14mDelta
Deal found 8/21$623
This Virgin Atlantic deal was found by Cheapflights users on 8/21. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/308:00 amMSO - LHR
1 stop16h 05mVirgin Atlantic
Mon 12/88:25 pmLHR - MSO
2 stops28h 02mVirgin Atlantic
Deal found 8/21$624
This Delta deal was found by Cheapflights users on 8/21. 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 11/121:10 pmGTF - LHR
1 stop13h 50mDelta
Wed 12/310:45 amLHR - GTF
1 stop13h 57mDelta
Deal found 8/21$626
This KLM deal was found by Cheapflights users on 8/21. 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.
Wed 11/265:35 amMSO - LHR
1 stop21h 25mMultiple Airlines
Wed 12/311:05 amLHR - MSO
1 stop16h 07mMultiple Airlines
Deal found 8/21$630
This KLM deal was found by Cheapflights users on 8/21. 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 9/301:05 pmGTF - LHR
2 stops18h 10mKLM
Wed 10/811:00 amLHR - GTF
1 stop13h 29mKLM
Deal found 8/21$630
This Delta deal was found by Cheapflights users on 8/21. 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 11/411:56 amBZN - LHR
1 stop15h 34mDelta
Fri 12/1911:05 amLHR - BZN
1 stop19h 53mDelta
Deal found 8/21$631
This KLM deal was found by Cheapflights users on 8/20. 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 12/28:00 amMSO - LHR
1 stop16h 05mKLM
Thu 12/1110:45 amLHR - MSO
1 stop13h 42mKLM
Deal found 8/20$631
This Virgin Atlantic deal was found by Cheapflights users on 8/20. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:35 amMSO - LHR
2 stops18h 30mVirgin Atlantic
Thu 12/111:00 pmLHR - MSO
2 stops18h 32mVirgin Atlantic
Deal found 8/20$635

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 August 21, 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

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

5:40 am-9:50 am

1 stop21h 10m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$618

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/12

1:10 pm-10:00 am

1 stop13h 50m

London Heathrow

Thu 12/4

6:20 am-5:42 pm

2 stops18h 22m

$618

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/12

1:10 pm-10:00 am

1 stop13h 50m

London Heathrow

Fri 12/5

6:20 am-5:42 pm

2 stops18h 22m

$618

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/12

1:10 pm-10:00 am

1 stop13h 50m

London Heathrow

Wed 12/3

8:25 pm-5:42 pm

2 stops28h 17m

$619

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Wed 10/1

7:35 am-2:15 pm

1 stop23h 40m

London Heathrow

Fri 10/10

6:15 am-11:37 pm

2 stops24h 22m

$622

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

8:00 am-7:05 am

1 stop16h 05m

London Heathrow

Wed 12/3

6:20 am-8:12 pm

2 stops20h 52m

$622

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

$623

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Sun 11/30

8:00 am-7:05 am

1 stop16h 05m

London Heathrow

Mon 12/8

8:25 pm-5:27 pm

2 stops28h 02m

$624

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

1:05 pm-9:50 am

1 stop13h 45m

London Heathrow

Wed 10/8

11:00 am-11:06 pm

1 stop19h 06m

$626

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/12

1:10 pm-10:00 am

1 stop13h 50m

London Heathrow

Thu 12/4

10:45 am-5:42 pm

1 stop13h 57m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 60 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 $1,097). 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 to fly round-trip from Montana to London?

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.

  • How long is the flight from Montana to London?

    A quick flight from Montana to London can take about 13h 50m. Delta provides one of the quickest options available for as low as $619. There are 4472 mi between Montana and London. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $446. KLM flights start at $463 while deals on Virgin Atlantic start at $468 one-way.

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

    Most travelers choose Bozeman Gallatin Field - London Heathrow, Missoula Johnson-Bell Field - London Heathrow or Bozeman Gallatin Field - London City 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 $1,097). 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 London?

Book flights to London if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Dartford
Dover
Orpington
Gatwick
Borehamwood
Aylesbury
Chelmsford
Bedford
Folkestone
Chichester
Arundel
Eastbourne
Milton Keynes

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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Top 2 airlines flying from Montana to London

Discover the top 2 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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$645Average$870FlexibilityNo cancel feeOn-time69%
DeltaCheapest$677Average$839FlexibilityNo cancel feeOn-timeN/A

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