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Cheap flights from Montana to London from £305

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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LON
7 déc. — 14 déc.1
1 adult
1 adult, Economy, 0 bags

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 7 novembre 2025.

mar. 11/1111:42BIL - LHR
1 stop15h 18mDelta
mer. 19/1106:20LHR - BIL
2 stops24h 04mDelta
Deal found 6/11£449
mer. 3/1213:13MSO - LHR
1 stop13h 47mKLM
jeu. 11/1208:40LHR - MSO
2 stops20h 13mKLM
Deal found 6/11£451
mer. 3/1207:45MSO - LHR
2 stops16h 05mMultiple Airlines
jeu. 11/1206:30LHR - MSO
2 stops22h 23mMultiple Airlines
Deal found 6/11£454
ven. 5/1205:30HLN - LHR
1 stop21h 30mDelta
mar. 9/1208:40LHR - HLN
2 stops44h 50mDelta
Deal found 7/11£464
ven. 5/1205:30HLN - LHR
1 stop21h 30mAir France
mar. 9/1210:45LHR - HLN
1 stop18h 45mAir France
Deal found 7/11£468
jeu. 4/1214:36BZN - LHR
1 stop14h 04mKLM
jeu. 11/1206:30LHR - BZN
2 stops22h 56mKLM
Deal found 4/11£470
jeu. 4/1205:30BZN - LHR
2 stops18h 35mDelta
jeu. 11/1208:40LHR - BZN
2 stops21h 57mDelta
Deal found 4/11£474
ven. 5/1207:45MSO - LHR
1 stop16h 20mKLM
ven. 12/1211:05LHR - MSO
1 stop17h 48mKLM
Deal found 5/11£474
ven. 5/1207:45MSO - LHR
1 stop16h 20mVirgin Atlantic
ven. 12/1209:40LHR - MSO
2 stops19h 13mVirgin Atlantic
Deal found 5/11£478
lun. 29/1217:15MSO - LHR
1 stop33h 25mUnited Airlines
ven. 9/111:10LHR - MSO
2 stops41h 41mUnited Airlines
Deal found 5/11£481
jeu. 6/1114:29BZN - LHR
1 stop14h 11mKLM
mar. 11/1106:30LHR - BZN
2 stops22h 59mKLM
Deal found 4/11£490
mer. 26/1118:16MSO - LHR
2 stops18h 54mDelta
mer. 3/1208:40LHR - MSO
2 stops20h 13mDelta
Deal found 5/11£493

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 7 novembre 2025.

Round-trip from

£451

One-way from

£305

Popular in

December

Cheapest in

October

Average price

£656
KLM
  • KLM
  • 3/12-11/12
  • 3 total stops
  • 34h 00m total
  • Montana to London
Search Deals
United Airlines
  • United Airlines
  • 1/1
  • 1 total stop
  • 20h 25m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£49 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 November 2025
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 7 novembre 2025.
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

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

mer. 14/1

12:15-10:00

1 stop14h 45m

London Heathrow

ven. 23/1

06:20-17:14

2 stops17h 54m

£456

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

dim. 1/3

07:55-07:05

1 stop16h 10m

London Heathrow

mar. 10/3

06:20-17:27

2 stops17h 07m

£456

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mar. 13/1

07:55-07:05

1 stop16h 10m

London Heathrow

mar. 27/1

06:20-20:14

2 stops20h 54m

£456

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mar. 3/3

18:01-10:00

1 stop32h 59m

London Heathrow

mar. 10/3

06:20-17:27

2 stops17h 07m

£456

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

lun. 2/3

07:55-07:05

1 stop16h 10m

London Heathrow

mar. 10/3

06:20-17:27

2 stops17h 07m

£456

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

mer. 14/1

05:05-08:45

2 stops20h 40m

London Heathrow

ven. 23/1

06:20-22:54

2 stops23h 34m

£460

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

mer. 25/2

05:05-08:45

2 stops20h 40m

London Heathrow

mar. 10/3

06:20-20:17

2 stops19h 57m

£460

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

lun. 5/1

15:00-12:50

1 stop14h 50m

London Heathrow

mar. 13/1

10:45-17:48

1 stop14h 03m

£461

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

mar. 6/1

07:23-12:50

1 stop22h 27m

London Heathrow

mar. 13/1

12:20-22:27

1 stop17h 07m

£461

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

jeu. 4/12

14:36-11:40

1 stop14h 04m

London Heathrow

jeu. 11/12

06:30-22:26

2 stops22h 56m

£470

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 39 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, August is the cheapest month in which you can book a flight from Montana to London (average of £487). Flying from Montana to London in June is currently the most expensive (average of £882). 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 14h 04m. Fly via Delta, Virgin Atlantic, or KLM to get the fastest option. The distance between Montana and London is about 4556 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, Missoula Johnson-Bell Field - London Heathrow 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 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, August is the cheapest month in which you can book a flight from Montana to London (average of £487). Flying from Montana to London in June is currently the most expensive (average of £882). 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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Fly with Cheapflights

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

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Why should you use Cheapflights to find cheap flight tickets from 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.

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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