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Cheap flights from Montana to London Heathrow Airport from £250

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — LHR
11 Jul — 18 Jul1
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 11 June 2026.

Wed 11/1106:15
GTF
-
LHR
2 stops17h 25m
United Airlines
Fri 13/1106:35
LHR
-
GTF
2 stops22h 55m
United Airlines
Deal found 7/6£565
Sun 6/1214:25
GTF
-
LHR
2 stops37h 40m
United Airlines
Wed 9/1207:30
LHR
-
GTF
2 stops20h 50m
United Airlines
Deal found 10/6£576
Wed 11/1105:00
BIL
-
LHR
1 stop21h 40m
United Airlines
Fri 13/1107:30
LHR
-
BIL
2 stops33h 21m
United Airlines
Deal found 7/6£633
Thu 22/1014:00
BZN
-
LHR
1 stop14h 20m
Virgin Atlantic
Mon 26/1012:20
LHR
-
BZN
1 stop16h 01m
Virgin Atlantic
Deal found 7/6£649
Mon 16/1112:50
MSO
-
LHR
1 stop14h 10m
Delta
Tue 24/1108:40
LHR
-
MSO
2 stops18h 32m
Delta
Deal found 9/6£654
Mon 12/1013:05
BZN
-
LHR
1 stop13h 55m
Virgin Atlantic
Wed 14/1011:45
LHR
-
BZN
2 stops19h 25m
Virgin Atlantic
Deal found 11/6£654
Wed 4/1113:05
BZN
-
LHR
1 stop13h 55m
KLM
Wed 11/1111:45
LHR
-
BZN
2 stops19h 13m
KLM
Deal found 6/6£655
Wed 14/1010:30
BIL
-
LHR
1 stop19h 05m
United Airlines
Thu 29/1006:35
LHR
-
BIL
2 stops20h 16m
United Airlines
Deal found 7/6£655
Mon 28/905:30
MSO
-
LHR
1 stop21h 30m
Delta
Fri 16/1006:30
LHR
-
MSO
2 stops20h 42m
Delta
Deal found 7/6£655
Sun 27/914:38
MSO
-
LHR
1 stop12h 02m
United Airlines
Fri 16/1006:55
LHR
-
MSO
2 stops21h 37m
United Airlines
Deal found 7/6£657
Wed 4/1114:37
BZN
-
LHR
2 stops18h 13m
Lufthansa
Wed 11/1106:35
LHR
-
BZN
2 stops21h 32m
Lufthansa
Deal found 9/6£657
Sun 18/1005:00
BIL
-
LHR
2 stops18h 30m
United Airlines
Fri 30/1006:35
LHR
-
BIL
2 stops20h 16m
United Airlines
Deal found 7/6£657

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 11 June 2026.

Round-trip from

£565

One-way from

£250

Popular in

July

Cheapest in

November

Average price

£1,056
United Airlines
  • United Airlines
  • 11/11-13/11
  • 4 total stops
  • 40h 20m total
  • Montana to London
Search Deals
Delta
  • Delta
  • 13/9
  • 1 total stop
  • 16h 55m total
  • Montana to London
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£189 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 June 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 11 June 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

Cheapest return flight

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 6/12

14:25-11:05

2 stops37h 40m

London Heathrow

Wed 9/12

07:30-21:20

2 stops20h 50m

£576

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/11

14:25-09:40

1 stop12h 15m

London Heathrow

Fri 13/11

06:35-22:30

2 stops22h 55m

£623

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Wed 11/11

14:40-09:40

1 stop12h 00m

London Heathrow

Fri 13/11

07:30-13:13

2 stops36h 43m

£633

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 16/11

12:50-10:00

1 stop14h 10m

London Heathrow

Thu 19/11

08:40-20:12

2 stops18h 32m

£654

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 18/11

12:50-10:00

1 stop14h 10m

London Heathrow

Fri 27/11

08:40-20:12

2 stops18h 32m

£654

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 29/9

05:30-11:00

1 stop22h 30m

London Heathrow

Thu 15/10

06:30-20:12

2 stops20h 42m

£655

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sun 18/10

14:28-09:40

1 stop12h 12m

London Heathrow

Fri 30/10

06:35-20:51

2 stops20h 16m

£655

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 8/9

12:50-15:35

2 stops19h 45m

London Heathrow

Thu 17/9

06:30-22:24

2 stops22h 54m

£657

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 8/9

12:50-15:35

2 stops19h 45m

London Heathrow

Thu 17/9

06:30-22:24

2 stops22h 54m

£658

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 6/9

05:40-13:05

2 stops24h 25m

London Heathrow

Fri 9/10

06:30-22:41

2 stops23h 11m

£658

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 47 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

How much does it cost for a return flight from Montana to London Heathrow Airport?

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 Delta fly from Montana to London Heathrow Airport in about 14h 10m. The time it takes to get you to your destination can typically vary by up to 3h 15m. Airlines will cover a distance of 4583 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 Billings Logan Intl - 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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Eastbourne
Watford
Swindon
Ipswich
Poole
Guildford
Romford

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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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Dulles Intl to London City flights
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Baltimore to Gatwick flights
Philadelphia to Heathrow flights
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Los Angeles to Stansted flights
Denver to Heathrow flights
Los Angeles to London City flights
Reagan-National to Gatwick flights
O'Hare Intl to Gatwick flights
San Francisco to Gatwick flights
O'Hare Intl to Stansted flights
O'Hare Intl to London City flights
Sky Harbor Intl to Heathrow flights
San Francisco to London City flights
Charlotte to Heathrow flights
Orlando to Gatwick flights
Detroit 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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