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Cheap flights from Montana to London from £252

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
31 Jul — 7 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montana to London

Enter your travel dates to find the best prices.

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 1 July 2026.

Mon 5/1016:24
BZN
-
LHR
2 stops16h 16m
Lufthansa
Tue 13/1007:25
LHR
-
BZN
2 stops20h 39m
Lufthansa
Deal found 28/6£655
Tue 6/1005:00
BIL
-
LHR
1 stop21h 40m
United Airlines
Wed 14/1007:25
LHR
-
BIL
2 stops22h 26m
United Airlines
Deal found 29/6£659
Mon 12/1014:30
FCA
-
LHR
1 stop12h 10m
United Airlines
Tue 20/1006:55
LHR
-
FCA
2 stops21h 41m
United Airlines
Deal found 26/6£659
Sun 8/1106:30
GTF
-
LHR
1 stop20h 10m
United Airlines
Thu 12/1106:35
LHR
-
GTF
2 stops22h 12m
United Airlines
Deal found 29/6£661
Sat 17/1016:24
BZN
-
LHR
2 stops31h 06m
United Airlines
Thu 29/1006:50
LHR
-
BZN
2 stops34h 43m
United Airlines
Deal found 26/6£665
Sun 18/1007:00
BIL
-
LHR
2 stops18h 35m
Multiple Airlines
Tue 3/1107:40
LHR
-
BIL
2 stops20h 24m
Multiple Airlines
Deal found 30/6£666
Tue 6/1012:53
BZN
-
LHR
1 stop13h 07m
United Airlines
Wed 14/1007:30
LHR
-
BZN
2 stops20h 34m
United Airlines
Deal found 30/6£667
Tue 6/1019:32
BIL
-
LHR
1 stop12h 33m
Alaska Airlines
Wed 14/1017:00
LHR
-
BIL
1 stop13h 50m
Alaska Airlines
Deal found 29/6£667
Tue 3/1114:05
FCA
-
LHR
1 stop15h 15m
Alaska Airlines
Thu 5/1114:45
LHR
-
FCA
1 stop16h 14m
Alaska Airlines
Deal found 29/6£667
Sun 8/1116:22
MSO
-
LHR
1 stop12h 58m
Alaska Airlines
Tue 10/1114:45
LHR
-
MSO
1 stop13h 40m
Alaska Airlines
Deal found 29/6£667
Mon 12/1014:30
HLN
-
LHR
1 stop14h 55m
United Airlines
Tue 27/1007:30
LHR
-
HLN
2 stops20h 09m
United Airlines
Deal found 30/6£667
Tue 6/1013:23
BIL
-
LHR
2 stops15h 12m
American Airlines
Wed 14/1008:15
LHR
-
BIL
2 stops19h 57m
American Airlines
Deal found 27/6£668

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 1 July 2026.

Round-trip from

£655

One-way from

£252

Popular in

July

Cheapest in

November

Average price

£1,141
Lufthansa
  • Lufthansa
  • 5/10-13/10
  • 4 total stops
  • 36h 55m total
  • Montana to London
Search Deals
American Airlines
  • American Airlines
  • 27/9
  • 1 total stop
  • 14h 03m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£176 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 1 July 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 return flight

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 6/10

05:00-09:40

1 stop21h 40m

London Heathrow

Wed 14/10

07:25-22:51

2 stops22h 26m

£659

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 8/11

06:30-09:40

1 stop20h 10m

London Heathrow

Thu 12/11

06:35-21:47

2 stops22h 12m

£661

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sat 17/10

11:11-21:20

1 stop27h 09m

London Heathrow

Thu 29/10

06:50-11:33

2 stops34h 43m

£667

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 6/10

11:16-15:05

1 stop20h 49m

London Heathrow

Wed 14/10

17:00-23:59

1 stop13h 59m

£667

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 6/10

19:32-15:05

1 stop12h 33m

London Heathrow

Tue 13/10

17:00-23:50

1 stop13h 50m

£667

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 6/10

19:32-15:05

1 stop12h 33m

London Heathrow

Wed 14/10

17:00-23:50

1 stop13h 50m

£667

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 3/11

14:05-12:20

1 stop15h 15m

London Heathrow

Thu 5/11

14:45-23:59

1 stop16h 14m

£667

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 12/10

14:30-12:25

1 stop14h 55m

London Heathrow

Tue 27/10

07:30-21:39

2 stops20h 09m

£667
Fastest return journey

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 12/10

19:45-15:05

1 stop12h 20m

London Heathrow

Tue 20/10

17:00-22:59

1 stop12h 59m

£667

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 3/11

06:15-09:40

1 stop20h 25m

London Heathrow

Thu 5/11

18:00-21:42

2 stops34h 42m

£669

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 57 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 return 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 £418). Flying from Montana to London in June is currently the most expensive (average of £907). 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?

    There are many flights that can get you from Montana to London in 15h 02m. Fly via United Airlines, Alaska Airlines, or KLM to get the fastest option. The distance between Montana and London is about 4473 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Most travelers choose Bozeman Gallatin Field - London Heathrow, Bozeman Gallatin Field - London City 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 holiday 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 £418). Flying from Montana to London in June is currently the most expensive (average of £907). 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

Travelling to a place near London?

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Milton Keynes
Luton
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Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Eastbourne
Southall
Aylesbury
Romford
Ipswich
Borehamwood
Southend-on-Sea

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Fly with Cheapflights

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How does Cheapflights help users find flights from Montana to London?

Cheapflights helps you search for flights from Montana to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Montana to London?

Cheapflights simply makes it quick and affordable to book flights from Montana to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Montana to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Montana to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Montana to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Montana today and book when prices fit your budget.

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