Cheap flights from Montana to London from £167

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
8 feb — 15 feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montana to London

Keep the following information in mind while searching for Montana to London flight deals. Data was last updated 9 gennaio 2026.

Round-trip from

£448

One-way from

£167

Popular in

June

Cheapest in

October

Average price

£606
Air France
  • Air France
  • 3/2-10/2
  • 3 total stops
  • 34h 29m total
  • Montana to London
United Airlines
  • United Airlines
  • 15/4
  • 2 total stops
  • 17h 40m total
  • Montana to London
Highest demand for flights based on searches. 16% potential increase in price (£98 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Average for round-trip flights in January 2026

Find 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 9 gennaio 2026.

mer 21/113:21MSO - LHR
1 stop14h 04mAmerican Airlines
mer 28/107:35LHR - MSO
2 stops20h 10mAmerican Airlines
Deal found 6/1£438
ven 20/206:20BIL - LHR
1 stop17h 45mVirgin Atlantic
ven 27/211:05LHR - BIL
1 stop15h 34mVirgin Atlantic
Deal found 6/1£443
mer 14/106:22BIL - LHR
1 stop17h 43mDelta
mar 20/106:20LHR - BIL
2 stops20h 04mDelta
Deal found 8/1£448
mar 3/213:25MSO - LHR
1 stop13h 35mMultiple Airlines
mar 10/206:20LHR - MSO
2 stops20h 54mMultiple Airlines
Deal found 6/1£448
mer 21/107:55MSO - LHR
2 stops17h 10mAir France
mer 28/106:20LHR - MSO
2 stops18h 18mAir France
Deal found 6/1£451
gio 19/214:35BIL - LHR
1 stop12h 05mLufthansa
mer 25/208:30LHR - BIL
2 stops19h 52mLufthansa
Deal found 6/1£454
dom 29/318:10BTM - LHR
1 stop32h 40mDelta
mer 8/406:30LHR - BTM
2 stops17h 38mDelta
Deal found 6/1£457
dom 22/218:20GTF - LHR
2 stops31h 25mDelta
dom 1/306:20LHR - GTF
2 stops18h 13mDelta
Deal found 8/1£459
dom 29/314:45BZN - LHR
1 stop13h 25mDelta
mer 8/408:40LHR - BZN
2 stops18h 34mDelta
Deal found 6/1£460
dom 29/318:10BTM - LHR
2 stops33h 05mDelta
gio 9/409:55LHR - BTM
2 stops38h 13mDelta
Deal found 6/1£460
dom 29/318:22GTF - LHR
1 stop32h 28mDelta
mer 8/406:15LHR - GTF
2 stops23h 15mDelta
Deal found 6/1£460
lun 30/312:59HLN - LHR
1 stop13h 51mMultiple Airlines
gio 9/406:15LHR - HLN
2 stops23h 15mMultiple Airlines
Deal found 6/1£460

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 9 gennaio 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

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mar 3/2

13:25-10:00

1 stop13h 35m

London Heathrow

mar 10/2

06:20-20:14

2 stops20h 54m

£448

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mer 21/1

07:55-08:05

2 stops17h 10m

London Heathrow

mer 28/1

06:20-17:38

2 stops18h 18m

£451

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mar 3/2

05:00-06:55

2 stops18h 55m

London Heathrow

mar 10/2

06:20-20:14

2 stops20h 54m

£451

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mer 21/1

13:21-08:15

1 stop11h 54m

London Heathrow

mer 28/1

08:20-20:45

1 stop19h 25m

£453

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mar 3/2

13:25-10:00

1 stop13h 35m

London Heathrow

mar 10/2

11:05-20:14

1 stop16h 09m

£453

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

gio 19/2

14:35-09:40

1 stop12h 05m

London Heathrow

mer 25/2

08:30-21:22

2 stops19h 52m

£454

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

dom 29/3

18:10-09:50

1 stop32h 40m

London Heathrow

gio 9/4

11:45-17:08

2 stops36h 23m

£457

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

dom 29/3

18:10-09:50

1 stop32h 40m

London Heathrow

mar 7/4

11:45-17:08

2 stops36h 23m

£457

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dom 22/2

18:20-08:45

2 stops31h 25m

London Heathrow

dom 1/3

06:20-17:33

2 stops18h 13m

£459

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

mar 7/4

13:05-09:50

1 stop13h 45m

London Heathrow

gio 23/4

06:15-17:40

2 stops18h 25m

£460

Flights are sorted by cheapest return flights first.

Deals found on 8/1

Showing 1-10 of 52 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 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, January is the cheapest month in which you can book a flight from Montana to London (average of £449). Flying from Montana to London in June is currently the most expensive (average of £829). 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 for a return flight 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?

    There are many flights that can get you from Montana to London in 11h 54m. Fly via Air France, Delta, or American Airlines to get the fastest option. The distance between Montana and London is about 4583 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?

  • 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, January is the cheapest month in which you can book a flight from Montana to London (average of £449). Flying from Montana to London in June is currently the most expensive (average of £829). 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

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Alternative routes for Montana to London

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

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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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