What is the cheapest airline that flies from Montana to London Heathrow?

United Airlines, Air France, and Delta are the most popular carriers operating from Montana to London Heathrow

How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in Montana, such as Bozeman or Great Falls, and flying into London Heathrow Airport, then you can expect flight times to average 12h 10m and 12h 15m, respectively.

When did momondo last update prices for flights from Montana to London Heathrow Airport?

Prices for flights from Montana to London Heathrow Airport were last updated today.

How old do you have to be to fly from Montana to London Heathrow Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£248 Cheap Flights from Montana to London Heathrow Airport in 2026

Find the cheapest flights from Montana to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:51 - 18:35-

17h 44m

15:00 - 20:51-

36h 51m

£562United Airlines

Sun, 6 Dec - Tue, 8 Dec

14:30 - 16:50-

43h 20m

11:35 - 20:59-

16h 24m

£583United Airlines

Mon, 7 Dec - Thu, 10 Dec

14:30 - 16:50-

43h 20m

11:10 - 20:59-

16h 49m

£588United Airlines

Mon, 7 Dec - Thu, 10 Dec

07:00 - 07:55-

17h 55m

07:30 - 20:51-

20h 21m

£605Multiple Airlines

Sun, 6 Dec - Tue, 8 Dec

12:58 - 10:45-

14h 47m

10:45 - 17:48-

14h 03m

£606Multiple Airlines

Sun, 6 Dec - Tue, 8 Dec

10:15 - 08:25-

39h 10m

06:35 - 22:43-

23h 08m

£617United Airlines

Sun, 15 Nov - Wed, 18 Nov

10:15 - 08:25-

39h 10m

06:35 - 22:43-

23h 08m

£617United Airlines

Sun, 15 Nov - Wed, 18 Nov

07:00 - 08:30-

42h 30m

07:30 - 20:59-

20h 29m

£621United Airlines

Mon, 7 Dec - Thu, 10 Dec

17:51 - 18:35-

17h 44m

11:35 - 17:19-

12h 44m

£625United Airlines

Sun, 6 Dec - Tue, 8 Dec

07:00 - 08:25-

42h 25m

07:30 - 20:59-

20h 29m

£626United Airlines

Mon, 7 Dec - Thu, 10 Dec

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KLM flights from Montana to London Heathrow Airport

Our best KLM deals on Montana to London Heathrow Airport flight tickets

KLM

3 Nov

GTF05:40Great Falls

21h 20m

1 stop

LHR10:00London Heathrow

17 Nov

LHR17:50London Heathrow

30h 51m

2 stops

GTF17:41Great Falls

£652

KLM

3 Nov

GTF05:40Great Falls

18h 25m

2 stops

LHR07:05London Heathrow

17 Nov

LHR20:25London Heathrow

28h 16m

2 stops

GTF17:41Great Falls

£655

KLM

20 Oct

MSO08:33Missoula Johnson-Bell Field

18h 47m

1 stop

LHR10:20London Heathrow

29 Oct

LHR06:30London Heathrow

19h 24m

2 stops

MSO19:54Missoula Johnson-Bell Field

£673

SWISS flights from Montana to London Heathrow Airport

Our best SWISS deals on Montana to London Heathrow Airport flight tickets

SWISS

15 Nov

GTF06:30Great Falls

18h 25m

2 stops

LHR07:55London Heathrow

9 Dec

LHR11:35London Heathrow

16h 45m

1 stop

GTF21:20Great Falls

£716

SWISS

22 Oct

MSO14:38Missoula Johnson-Bell Field

12h 02m

1 stop

LHR09:40London Heathrow

30 Oct

LHR10:25London Heathrow

17h 22m

2 stops

MSO21:47Missoula Johnson-Bell Field

£760

momondo Fare Finder

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

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sun 6/12

17:51-18:35

2 stops17h 44m

London Heathrow

Tue 8/12

15:00-20:51

2 stops36h 51m

£562

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 7/12

14:30-16:50

2 stops43h 20m

London Heathrow

Thu 10/12

11:35-20:59

1 stop16h 24m

£583

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 7/12

14:30-16:50

2 stops43h 20m

London Heathrow

Thu 10/12

11:10-20:59

2 stops16h 49m

£588

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sun 6/12

07:00-07:55

2 stops17h 55m

London Heathrow

Tue 8/12

07:30-20:51

2 stops20h 21m

£605

Fastest return journey

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sun 6/12

12:58-10:45

2 stops14h 47m

London Heathrow

Tue 8/12

10:45-17:48

1 stop14h 03m

£606

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Sun 15/11

10:15-08:25

2 stops39h 10m

London Heathrow

Wed 18/11

06:35-22:43

2 stops23h 08m

£617

ButteLondon

BTM - LHR

BTMLHR

Butte Silver Bow Co

Sun 15/11

10:15-08:25

2 stops39h 10m

London Heathrow

Wed 18/11

06:35-22:43

2 stops23h 08m

£617

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 7/12

07:00-08:30

2 stops42h 30m

London Heathrow

Thu 10/12

07:30-20:59

2 stops20h 29m

£621

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Sun 6/12

17:51-18:35

2 stops17h 44m

London Heathrow

Tue 8/12

11:35-17:19

1 stop12h 44m

£625

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 7/12

07:00-08:25

2 stops42h 25m

London Heathrow

Thu 10/12

07:30-20:59

2 stops20h 29m

£626

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

In general, February is the cheapest month to fly from Montana to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £0. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Montana averaging around £594.

Can stopping save me money on Montana to London Heathrow Airport flights?

You could potentially save up to 38% on your flight if you consider stops on a Montana to London Heathrow Airport flight.

Cheap Montana to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montana to London Heathrow Airport

Fastest flight time	12h 15m
Direct flights	None

The fastest flight from Montana to London Heathrow Airport takes 12h 15m

There are no direct flights from Montana to London Heathrow Airport. There are no popular flight routes from Montana to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from Montana to London Heathrow Airport

When did momondo last update prices for flights from Montana to London Heathrow Airport?
Prices for flights from Montana to London Heathrow Airport were last updated today.
How old do you have to be to fly from Montana to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montana to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Eastbourne

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Gatwick

Milton Keynes

Stratford-upon-Avon

Luton

Southend-on-Sea

Slough

Northampton

Ipswich

Maidstone

Swindon

Folkestone

Ilford

Hastings

Poole

Canterbury

Guildford

Chichester

Hayes

Why use momondo?

Why should I use momondo to find a flight deal from Montana to London?

Finding the right flight to London from Montana is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Montana to London with flexible booking policies on momondo?

Yes. All flights to London from Montana on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Montana to London?

momondo helps you find the best flight between Montana and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Montana to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Montana to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.