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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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
Jul 31 — Aug 71
Fri 7/31
Fri 8/7
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 July 1, 2026.

This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:00 am
BIL
-
LHR
1 stop21h 55m
American Airlines
Wed 10/148:15 am
LHR
-
BIL
2 stops19h 57m
American Airlines
Deal found 7/1$866
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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.
Mon 10/54:24 pm
BZN
-
LHR
2 stops16h 16m
Lufthansa
Tue 10/137:25 am
LHR
-
BZN
2 stops20h 39m
Lufthansa
Deal found 6/30$867
This United Airlines deal was found by Cheapflights users on 6/29. 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 10/65:00 am
BIL
-
LHR
1 stop21h 40m
United Airlines
Wed 10/147:25 am
LHR
-
BIL
2 stops22h 26m
United Airlines
Deal found 6/29$873
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/124:17 pm
FCA
-
LHR
1 stop14h 53m
United Airlines
Tue 10/206:55 am
LHR
-
FCA
2 stops21h 41m
United Airlines
Deal found 6/30$874
This United Airlines deal was found by Cheapflights users on 6/29. 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 11/86:30 am
GTF
-
LHR
1 stop20h 10m
United Airlines
Thu 11/126:35 am
LHR
-
GTF
2 stops22h 12m
United Airlines
Deal found 6/29$875
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Sat 10/174:24 pm
BZN
-
LHR
2 stops31h 06m
United Airlines
Thu 10/296:50 am
LHR
-
BZN
2 stops34h 43m
United Airlines
Deal found 6/26$881
This Booking.com deal was found by Cheapflights users on 6/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:00 am
BIL
-
LHR
2 stops18h 35m
Multiple Airlines
Tue 11/37:40 am
LHR
-
BIL
2 stops20h 24m
Multiple Airlines
Deal found 6/30$882
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:16 am
BZN
-
LHR
1 stop20h 49m
Alaska Airlines
Wed 10/145:00 pm
LHR
-
BZN
1 stop13h 59m
Alaska Airlines
Deal found 6/30$884
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:05 pm
FCA
-
LHR
1 stop15h 15m
Alaska Airlines
Thu 11/52:45 pm
LHR
-
FCA
1 stop16h 14m
Alaska Airlines
Deal found 6/29$884
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:32 pm
BIL
-
LHR
1 stop12h 33m
Alaska Airlines
Wed 10/145:00 pm
LHR
-
BIL
1 stop13h 50m
Alaska Airlines
Deal found 6/29$884
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:22 pm
MSO
-
LHR
1 stop12h 58m
Alaska Airlines
Tue 11/102:45 pm
LHR
-
MSO
1 stop13h 40m
Alaska Airlines
Deal found 6/29$884
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/122:30 pm
HLN
-
LHR
1 stop14h 55m
United Airlines
Tue 10/277:30 am
LHR
-
HLN
2 stops20h 09m
United Airlines
Deal found 6/30$884

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 July 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$866
(American Airlines)

One-way from

$334
(American Airlines)

Popular in

July

Cheapest in

November

Average price

$1,511
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 ($310 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 1, 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

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 10/6

5:00 am-9:40 am

1 stop21h 40m

London Heathrow

Wed 10/14

7:25 am-10:51 pm

2 stops22h 26m

$873

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 11/8

6:30 am-9:40 am

1 stop20h 10m

London Heathrow

Thu 11/12

6:35 am-9:47 pm

2 stops22h 12m

$875

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sat 10/17

4:24 pm-6:30 am

2 stops31h 06m

London Heathrow

Thu 10/29

6:50 am-11:33 am

2 stops34h 43m

$881

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 10/6

11:16 am-3:05 pm

1 stop20h 49m

London Heathrow

Wed 10/14

5:00 pm-11:59 pm

1 stop13h 59m

$884

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/3

2:05 pm-12:20 pm

1 stop15h 15m

London Heathrow

Thu 11/5

2:45 pm-11:59 pm

1 stop16h 14m

$884
Quickest round-trip

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 10/12

7:45 pm-3:05 pm

1 stop12h 20m

London Heathrow

Tue 10/20

5:00 pm-10:59 pm

1 stop12h 59m

$884

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 10/6

12:53 pm-9:00 am

1 stop13h 07m

London Heathrow

Wed 10/14

7:30 am-9:04 pm

2 stops20h 34m

$884

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sun 10/18

12:05 pm-3:05 pm

1 stop20h 00m

London Heathrow

Tue 11/3

2:45 pm-10:43 pm

1 stop14h 58m

$884

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 10/6

7:32 pm-3:05 pm

1 stop12h 33m

London Heathrow

Tue 10/13

5:00 pm-11:50 pm

1 stop13h 50m

$884

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 10/12

2:30 pm-12:25 pm

1 stop14h 55m

London Heathrow

Tue 10/27

7:30 am-9:39 pm

2 stops20h 09m

$884

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 54 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, March is the cheapest month in which you can book a flight from Montana to London (average of $554). Flying from Montana to London in June is currently the most expensive (average of $1,201). 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 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 12h 10m. United Airlines provides one of the quickest options available for as low as $873. 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, Bozeman Gallatin Field - London City or Billings Logan Intl - 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, March is the cheapest month in which you can book a flight from Montana to London (average of $554). Flying from Montana to London in June is currently the most expensive (average of $1,201). 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
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
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 July 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$556Average$1,017FlexibilityNo cancel feeOn-time69%
DeltaCheapest$604Average$1,061FlexibilityNo cancel feeOn-timeN/A

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