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$334+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
Jun 5 — Jun 121
Fri 6/5
Fri 6/12
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 May 6, 2026.

This United Airlines deal was found by Cheapflights users on 5/2. 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 10/191:55 pm
COD
-
LHR
2 stops20h 10m
United Airlines
Wed 10/212:05 pm
LHR
-
COD
2 stops39h 42m
United Airlines
Deal found 5/2$795
This American Airlines deal was found by Cheapflights users on 5/5. 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 8/111:32 pm
BZN
-
LHR
1 stop14h 33m
American Airlines
Tue 9/228:15 am
LHR
-
BZN
2 stops19h 24m
American Airlines
Deal found 5/5$871
This Cheapflightsfares deal was found by Cheapflights users on 5/5. 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.
Tue 8/1810:41 am
BZN
-
LHR
2 stops19h 09m
Lufthansa
Tue 9/16:55 am
LHR
-
BZN
2 stops21h 12m
Lufthansa
Deal found 5/5$873
This United Airlines deal was found by Cheapflights users on 5/5. 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 8/1812:30 pm
BZN
-
LHR
1 stop16h 25m
United Airlines
Tue 9/16:50 am
LHR
-
BZN
2 stops18h 33m
United Airlines
Deal found 5/5$878
This KLM deal was found by Cheapflights users on 5/2. 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 11/411:35 am
BIL
-
LHR
1 stop15h 25m
KLM
Tue 2/236:30 am
LHR
-
BIL
2 stops20h 18m
KLM
Deal found 5/2$878
This Delta deal was found by Cheapflights users on 5/3. 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 10/258:00 am
MSO
-
LHR
1 stop17h 05m
Delta
Thu 11/128:40 am
LHR
-
MSO
2 stops18h 32m
Delta
Deal found 5/3$878
This Delta deal was found by Cheapflights users on 5/4. 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 8/193:14 pm
FCA
-
LHR
1 stop14h 51m
Delta
Wed 8/2611:45 am
LHR
-
FCA
2 stops18h 08m
Delta
Deal found 5/4$879
This Virgin Atlantic deal was found by Cheapflights users on 5/4. 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.
Mon 8/101:14 pm
MSO
-
LHR
1 stop13h 46m
Virgin Atlantic
Wed 8/1911:45 am
LHR
-
MSO
2 stops19h 02m
Virgin Atlantic
Deal found 5/4$879
This United Airlines deal was found by Cheapflights users on 5/3. 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 10/282:27 pm
MSO
-
LHR
1 stop13h 13m
United Airlines
Tue 11/106:35 am
LHR
-
MSO
2 stops21h 51m
United Airlines
Deal found 5/3$880
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Sun 11/17:00 am
BZN
-
LHR
2 stops17h 10m
United Airlines
Tue 11/106:35 am
LHR
-
BZN
2 stops21h 32m
United Airlines
Deal found 5/1$881
This United Airlines deal was found by Cheapflights users on 5/5. 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 11/45:00 am
BIL
-
LHR
2 stops19h 10m
United Airlines
Tue 2/236:35 am
LHR
-
BIL
2 stops21h 16m
United Airlines
Deal found 5/5$882
This United Airlines deal was found by Cheapflights users on 5/5. 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 8/1110:41 am
BZN
-
LHR
2 stops16h 44m
United Airlines
Tue 9/226:50 am
LHR
-
BZN
2 stops18h 33m
United Airlines
Deal found 5/5$883

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 May 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$795
(United Airlines)

One-way from

$334
(KLM)

Popular in

July

Cheapest in

November

Average price

$969
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. 23% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 6, 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

CodyLondon

COD - LHR

CODLHR

Cody E.E. Faust

Mon 10/19

1:55 pm-5:05 pm

2 stops20h 10m

London Heathrow

Wed 10/21

2:05 pm-10:47 pm

2 stops39h 42m

$795

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/19

3:14 pm-1:05 pm

1 stop14h 51m

London Heathrow

Wed 8/26

11:45 am-10:53 pm

2 stops18h 08m

$879

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 11/1

7:00 am-7:10 am

2 stops17h 10m

London Heathrow

Tue 11/10

6:35 am-9:07 pm

2 stops21h 32m

$881

MissoulaLondon

MSO - LGW

MSOLGW

Missoula Johnson-Bell Field

Mon 8/10

1:14 pm-4:00 pm

2 stops19h 46m

London Gatwick

Wed 8/19

10:25 am-11:52 pm

2 stops20h 27m

$890

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 11/1

6:00 am-7:05 am

1 stop18h 05m

London Heathrow

Tue 11/10

10:45 am-5:55 pm

1 stop14h 10m

$907

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/19

3:14 pm-1:05 pm

1 stop14h 51m

London Heathrow

Wed 8/26

10:55 am-10:53 pm

1 stop18h 58m

$907

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/19

5:00 pm-12:35 pm

1 stop12h 35m

London Heathrow

Wed 8/26

8:00 am-6:48 pm

1 stop17h 48m

$907

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 9/14

12:50 pm-10:00 am

1 stop14h 10m

London Heathrow

Thu 10/1

10:55 am-5:23 pm

1 stop13h 28m

$907

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 9/15

5:40 am-11:00 am

1 stop22h 20m

London Heathrow

Fri 9/25

12:25 pm-11:47 pm

1 stop18h 22m

$907

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 8/18

3:54 pm-3:35 pm

1 stop16h 41m

London Heathrow

Tue 9/1

10:55 am-6:38 pm

1 stop14h 43m

$908

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Showing 1-10 of 53 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

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

Currently, October is the cheapest month in which you can book a flight from Montana to London (average of $473). Flying from Montana to London in June is currently the most expensive (average of $1,057). 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 14h 51m. United Airlines provides one of the quickest options available for as low as $879. 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, Missoula Johnson-Bell Field - London Heathrow or Kalispell Glacier Park - 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, October is the cheapest month in which you can book a flight from Montana to London (average of $473). Flying from Montana to London in June is currently the most expensive (average of $1,057). 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
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Sutton
Stansted

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 May 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$604Average$1,019FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$645Average$973FlexibilityNo cancel feeOn-time69%

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