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Cheap flights from Montana to London Heathrow Airport from £351

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LHR
30 Mar — 6 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montana to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Montana to Heathrow
Explore the most affordable flight options available from Montana to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 February 2026.

Sun 16/818:00
COD
-
LHR
2 stops18h 40m
United Airlines
Wed 26/806:55
LHR
-
COD
2 stops17h 23m
United Airlines
Deal found 26/2£496
Sun 16/813:28
COD
-
LHR
1 stop13h 12m
United Airlines
Fri 28/806:55
LHR
-
COD
2 stops21h 43m
United Airlines
Deal found 26/2£497
Wed 19/805:15
COD
-
LHR
2 stops18h 15m
United Airlines
Thu 27/809:00
LHR
-
COD
2 stops19h 38m
United Airlines
Deal found 26/2£500
Mon 17/813:28
COD
-
LHR
2 stops22h 12m
United Airlines
Tue 25/810:50
LHR
-
COD
2 stops33h 03m
United Airlines
Deal found 26/2£504
Sun 16/818:00
COD
-
LHR
2 stops18h 40m
United Airlines
Mon 24/815:30
LHR
-
COD
2 stops32h 48m
United Airlines
Deal found 26/2£520
Mon 17/813:28
COD
-
LHR
1 stop13h 12m
United Airlines
Mon 24/815:30
LHR
-
COD
2 stops32h 48m
United Airlines
Deal found 26/2£521
Wed 19/805:15
COD
-
LHR
2 stops18h 15m
United Airlines
Mon 24/815:30
LHR
-
COD
2 stops32h 48m
United Airlines
Deal found 26/2£523
Mon 17/813:28
COD
-
LHR
1 stop15h 52m
United Airlines
Wed 26/811:25
LHR
-
COD
1 stop12h 53m
United Airlines
Deal found 26/2£526
Wed 15/414:38
MSO
-
LHR
1 stop12h 02m
United Airlines
Wed 22/407:30
LHR
-
MSO
2 stops21h 00m
United Airlines
Deal found 26/2£550
Tue 1/912:40
MSO
-
LHR
2 stops25h 55m
United Airlines
Sat 19/914:05
LHR
-
MSO
2 stops33h 05m
United Airlines
Deal found 27/2£551
Tue 14/409:24
BTM
-
LHR
1 stop17h 16m
United Airlines
Tue 21/414:10
LHR
-
BTM
2 stops39h 12m
United Airlines
Deal found 27/2£556
Sun 16/818:00
COD
-
LHR
1 stop11h 20m
Multiple Airlines
Wed 26/811:25
LHR
-
COD
1 stop17h 13m
Multiple Airlines
Deal found 26/2£562

Find flight deals from Montana to Heathrow

Keep the following information in mind while searching for Montana to Heathrow flight deals. Data was last updated 28 February 2026.

Round-trip from

£496

One-way from

£351

Popular in

June

Cheapest in

October

Average price

£685
United Airlines
  • United Airlines
  • 16/8-26/8
  • 4 total stops
  • 36h 03m total
  • Montana to London
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 1/4
  • 2 total stops
  • 20h 25m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£82 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Montana to Heathrow 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 28 February 2026.
Use the filters below to find and compare flights from Montana to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Tue 14/4

09:24-09:40

1 stop17h 16m

London Heathrow

Tue 21/4

14:10-22:22

2 stops39h 12m

£556

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Sat 9/5

17:08-09:40

1 stop33h 32m

London Heathrow

Sun 17/5

14:05-21:30

2 stops38h 25m

£596

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 4/5

14:37-09:40

1 stop12h 03m

London Heathrow

Thu 28/5

14:50-21:34

1 stop13h 44m

£617

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 19/8

16:17-14:10

1 stop14h 53m

London Heathrow

Wed 26/8

14:05-15:27

2 stops32h 22m

£627

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Sat 28/3

14:35-08:40

1 stop12h 05m

London Heathrow

Sat 4/4

08:30-16:06

2 stops38h 36m

£633

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Wed 8/4

14:01-13:05

1 stop16h 04m

London Heathrow

Thu 16/4

09:55-20:11

2 stops17h 16m

£635

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Wed 8/4

11:50-12:10

2 stops17h 20m

London Heathrow

Thu 16/4

08:40-20:11

2 stops18h 31m

£639

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 8/4

14:23-13:05

1 stop15h 42m

London Heathrow

Tue 21/4

06:30-23:27

2 stops23h 57m

£642

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Fri 3/4

17:15-09:40

1 stop33h 25m

London Heathrow

Sat 18/4

17:40-13:32

2 stops50h 52m

£642

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 1/4

05:09-13:05

2 stops24h 56m

London Heathrow

Wed 8/4

06:15-17:15

2 stops18h 00m

£643

Flights are sorted by cheapest return flights first.

Deals found on 24/2

Showing 1-10 of 50 resultsSorted by cheapest first
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Best time to book a flight from Montana to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 Heathrow Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Montana to Heathrow. 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 Heathrow Airport?

    Airlines like United Airlines, KLM, and Virgin Atlantic fly from Montana to London Heathrow Airport in about 16h 04m. The time it takes to get you to your destination can typically vary by up to 1h 16m. Airlines will cover a distance of 4556 mi. This flight may include one or multiple stops.

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

    The most popular flight routes from Montana to London Heathrow Airport are Bozeman Gallatin Field - London Heathrow, Missoula Johnson-Bell Field - London Heathrow and Kalispell Glacier Park - London Heathrow.

  • Can I find deals for flights from Montana to Heathrow that include hotel bookings?

    Yes. In addition to deals on Montana to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Montana to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Heathrow.

  • Can I find deals for business class flights from Montana to Heathrow?

    Yes. Cheapflights offers flight deals from Montana to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Wembley
Luton
Northampton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
Chelmsford
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montana to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Los Angeles to Gatwick flights
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Dulles Intl to Gatwick flights
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Miami to Heathrow flights
Hobby to Heathrow flights
Newark to Stansted flights
Dulles Intl to London City flights
O'Hare Intl to Gatwick flights
Boston to London City flights
Los Angeles to Stansted flights
O'Hare Intl to Stansted flights
Newark to Luton flights
Denver to Heathrow flights
O'Hare Intl to London City flights
San Francisco to Gatwick flights
Baltimore to Gatwick flights
Newark to London City flights
Boston to Stansted flights
Philadelphia to Heathrow flights
Reagan-National to Gatwick flights
George Bush Intcntl to Heathrow flights
Los Angeles to London City flights
San Francisco to Stansted flights
Minneapolis to Heathrow flights
San Francisco to London City flights
Tampa to Heathrow flights
Dallas/Fort Worth to Gatwick flights
Ontario to Heathrow flights
Seattle to Gatwick flights

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Need flexible booking options for your flight to Heathrow from Montana? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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