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$225+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
mars 25 — avr. 11
mer. 3/25
mer. 4/1
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 février 23, 2026.

This United Airlines deal was found by Cheapflights users on 2/19. 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.
mar. 4/144:19 pm
BZN
-
LHR
1 stop13h 01m
United Airlines
mar. 4/285:40 pm
LHR
-
BZN
2 stops35h 53m
United Airlines
Deal found 2/19$662
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/142:40 pm
BZN
-
LHR
2 stops19h 00m
Lufthansa
mar. 4/287:30 pm
LHR
-
BZN
2 stops34h 03m
Lufthansa
Deal found 2/19$665
This United Airlines deal was found by Cheapflights users on 2/21. 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.
mer. 8/122:27 pm
MSO
-
LHR
1 stop14h 53m
United Airlines
mer. 8/269:30 am
LHR
-
MSO
2 stops20h 00m
United Airlines
Deal found 2/21$671
This KLM deal was found by Cheapflights users on 2/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/143:15 pm
BZN
-
LHR
1 stop17h 20m
KLM
mar. 4/2812:25 pm
LHR
-
BZN
1 stop14h 46m
KLM
Deal found 2/19$677
This United Airlines deal was found by Cheapflights users on 2/19. 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.
mer. 4/152:38 pm
MSO
-
LHR
1 stop14h 42m
United Airlines
lun. 4/203:30 pm
LHR
-
MSO
2 stops37h 00m
United Airlines
Deal found 2/19$680
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/284:55 pm
GTF
-
LHR
1 stop13h 25m
Multiple Airlines
ven. 10/302:55 pm
LHR
-
GTF
1 stop31h 18m
Multiple Airlines
Deal found 2/20$689
This United Airlines deal was found by Cheapflights users on 2/19. 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.
dim. 4/52:30 pm
GTF
-
LHR
1 stop12h 10m
United Airlines
dim. 4/127:25 am
LHR
-
GTF
2 stops37h 06m
United Airlines
Deal found 2/19$699
This United Airlines deal was found by Cheapflights users on 2/19. 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.
sam. 5/95:08 pm
MSO
-
LHR
1 stop33h 32m
United Airlines
dim. 5/172:05 pm
LHR
-
MSO
2 stops38h 25m
United Airlines
Deal found 2/19$707
This United Airlines deal was found by Cheapflights users on 2/19. 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.
dim. 4/59:24 am
BTM
-
LHR
1 stop19h 56m
United Airlines
dim. 4/128:30 am
LHR
-
BTM
2 stops44h 52m
United Airlines
Deal found 2/19$707
This United Airlines deal was found by Cheapflights users on 2/22. 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.
lun. 3/232:30 pm
GTF
-
LHR
1 stop13h 10m
United Airlines
mar. 3/318:30 am
LHR
-
GTF
2 stops36h 01m
United Airlines
Deal found 2/22$717
This United Airlines deal was found by Cheapflights users on 2/22. 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.
dim. 3/226:15 am
GTF
-
LHR
2 stops23h 00m
United Airlines
mar. 3/318:30 am
LHR
-
GTF
2 stops36h 01m
United Airlines
Deal found 2/22$721
This United Airlines deal was found by Cheapflights users on 2/19. 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.
jeu. 4/306:15 am
MSO
-
LHR
2 stops19h 15m
United Airlines
jeu. 5/142:50 pm
LHR
-
MSO
1 stop13h 40m
United Airlines
Deal found 2/19$731

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 février 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$649
(United Airlines)

One-way from

$225
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$923
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. 14% potential increase in price ($148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 février 23, 2026.
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

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

mar. 4/14

4:19 pm-12:20 pm

1 stop13h 01m

London Heathrow

mar. 4/28

5:40 pm-10:33 pm

2 stops35h 53m

$662

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mer. 8/12

6:15 am-11:35 am

2 stops22h 20m

London Heathrow

mer. 8/26

9:30 am-10:30 pm

2 stops20h 00m

$676

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

mar. 4/14

3:15 pm-3:35 pm

1 stop17h 20m

London Heathrow

mar. 4/28

12:25 pm-8:11 pm

1 stop14h 46m

$677

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mer. 4/15

2:38 pm-12:20 pm

1 stop14h 42m

London Heathrow

lun. 4/20

3:30 pm-9:30 pm

2 stops37h 00m

$680

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dim. 4/5

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

dim. 4/12

7:25 am-1:31 pm

2 stops37h 06m

$699

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

sam. 5/9

5:08 pm-9:40 am

1 stop33h 32m

London Heathrow

dim. 5/17

2:05 pm-9:30 pm

2 stops38h 25m

$707

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

dim. 4/5

9:24 am-12:20 pm

1 stop19h 56m

London Heathrow

dim. 4/12

8:30 am-10:22 pm

2 stops44h 52m

$707

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

jeu. 4/30

2:37 pm-9:40 am

1 stop12h 03m

London Heathrow

jeu. 5/14

2:50 pm-9:30 pm

1 stop13h 40m

$727

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mer. 4/8

2:38 pm-7:40 pm

2 stops22h 02m

London Heathrow

mer. 4/15

5:40 pm-9:30 pm

2 stops34h 50m

$742

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mar. 4/14

5:15 pm-12:20 pm

1 stop12h 05m

London Heathrow

ven. 4/24

2:50 pm-9:30 pm

1 stop13h 40m

$748

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

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

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 01m. United Airlines provides one of the quickest options available for as low as $662. There are 4556 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, Missoula Johnson-Bell Field - London Heathrow or Helena - 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
Hayes
Borehamwood
Aylesbury
Chipping Norton
Kingston upon Thames
Eastbourne
Sutton
Slough

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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 février 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$604Average$856FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$645Average$892FlexibilityNo cancel feeOn-time69%

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