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$388+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
Apr 24 — May 11
Fri 4/24
Fri 5/1
1 adult, Economy
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Cheap 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 March 25, 2026.

This American Airlines deal was found by Cheapflights users on 3/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/181:33 pm
BZN
-
LHR
1 stop12h 32m
American Airlines
Tue 8/258:15 am
LHR
-
BZN
2 stops19h 24m
American Airlines
Deal found 3/21$818
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:15 am
MSO
-
LHR
1 stop19h 55m
United Airlines
Tue 9/226:55 am
LHR
-
MSO
2 stops21h 31m
United Airlines
Deal found 3/21$827
This United Airlines deal was found by Cheapflights users on 3/23. 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 11/96:15 am
MSO
-
LHR
1 stop20h 25m
United Airlines
Thu 11/121:00 pm
LHR
-
MSO
2 stops34h 10m
United Airlines
Deal found 3/23$841
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Tue 9/112:28 pm
BIL
-
LHR
1 stop15h 47m
American Airlines
Tue 9/1511:10 am
LHR
-
BIL
1 stop18h 12m
American Airlines
Deal found 3/24$854
This American Airlines deal was found by Cheapflights users on 3/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/71:20 pm
MSO
-
LHR
1 stop14h 35m
Multiple Airlines
Thu 9/249:50 am
LHR
-
MSO
1 stop21h 29m
Multiple Airlines
Deal found 3/21$854
This eDestinos deal was found by Cheapflights users on 3/22. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2111:20 am
BZN
-
LHR
2 stops26h 00m
Multiple Airlines
Tue 4/281:05 pm
LHR
-
BZN
2 stops17h 53m
Multiple Airlines
Deal found 3/22$859
This American Airlines deal was found by Cheapflights users on 3/23. 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 8/1912:35 pm
FCA
-
LHR
1 stop15h 20m
American Airlines
Wed 8/262:25 pm
LHR
-
FCA
1 stop28h 12m
American Airlines
Deal found 3/23$859
This American Airlines deal was found by Cheapflights users on 3/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:44 pm
BIL
-
LHR
1 stop12h 36m
Multiple Airlines
Sat 11/78:35 am
LHR
-
BIL
2 stops19h 40m
Multiple Airlines
Deal found 3/21$866
This United Airlines deal was found by Cheapflights users on 3/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:32 pm
MSO
-
LHR
2 stops55h 58m
United Airlines
Tue 12/811:35 am
LHR
-
MSO
1 stop16h 51m
United Airlines
Deal found 3/20$869
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Fri 11/132:25 pm
GTF
-
LHR
2 stops59h 20m
United Airlines
Tue 11/176:35 am
LHR
-
GTF
2 stops37h 54m
United Airlines
Deal found 3/19$869
This United Airlines deal was found by Cheapflights users on 3/22. 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 10/1410:30 am
MSO
-
LHR
1 stop16h 10m
United Airlines
Mon 10/192:05 pm
LHR
-
MSO
2 stops30h 22m
United Airlines
Deal found 3/22$886
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Tue 4/212:38 pm
MSO
-
LHR
1 stop14h 47m
United Airlines
Tue 4/287:25 am
LHR
-
MSO
2 stops21h 05m
United Airlines
Deal found 3/22$887

Find flight deals from Montana to London

Keep the following information in mind while searching for Montana to London flight deals. Data was last updated March 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$818
(American Airlines)

One-way from

$388
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,079
Provider with most accurate pricing for Bozeman Gallatin Field-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-London (LON) flights.
Search Deals
From Montana to London (LON)
Search Deals
One-way flight from Montana to London (LON)
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($129 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 25, 2026.
Use the filters below to find and compare flights from Montana to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 9/8

7:15 am-10:10 am

1 stop19h 55m

London Heathrow

Tue 9/22

2:50 pm-9:26 pm

1 stop13h 36m

$856

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 4/21

2:38 pm-12:25 pm

1 stop14h 47m

London Heathrow

Tue 4/28

7:25 am-9:30 pm

2 stops21h 05m

$887

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 4/22

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Tue 4/28

6:55 am-9:17 pm

2 stops21h 22m

$887

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 4/27

6:15 am-9:40 am

1 stop20h 25m

London Heathrow

Thu 10/15

2:05 pm-9:15 pm

2 stops38h 10m

$896

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 9/10

6:15 am-7:40 am

2 stops18h 25m

London Heathrow

Thu 9/24

2:50 pm-9:15 pm

1 stop13h 25m

$906

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Fri 9/11

1:25 pm-7:45 pm

2 stops23h 20m

London Heathrow

Fri 9/25

5:05 pm-12:27 pm

2 stops26h 22m

$908

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 4/27

6:15 pm-6:45 am

1 stop29h 30m

London Heathrow

Thu 10/15

9:50 am-4:13 pm

1 stop13h 23m

$916

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Thu 5/7

2:37 pm-9:40 am

1 stop12h 03m

London Heathrow

Thu 5/14

7:25 am-9:30 pm

2 stops21h 05m

$937

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Thu 5/7

6:15 am-12:25 pm

1 stop23h 10m

London Heathrow

Tue 5/19

7:25 am-1:35 pm

2 stops37h 10m

$943

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Thu 5/7

1:08 pm-1:00 pm

1 stop16h 52m

London Heathrow

Tue 5/19

10:05 am-9:45 pm

1 stop18h 40m

$964

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 52 resultsSorted by cheapest first
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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

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 18h 05m. United Airlines provides one of the quickest options available for as low as $1,008. There are 4512 mi between Montana and London. This flight may include one or multiple stops.

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

    Most travelers choose Bozeman Gallatin Field - London Heathrow, Kalispell Glacier Park - London Heathrow 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.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton
Slough
Stansted

Browse thousands of different options on Cheapflights for your next trip

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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 March 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$604Average$856FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$645Average$956FlexibilityNo cancel feeOn-time69%

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