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

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

How long does it take to fly to London?

Flight times from Montana to London vary, but if you’re flying out of Great Falls and flying into London Heathrow Airport (one of the most popular routes), then the duration is 11h 55m on average. Another popular route from Montana to London is flying from Kalispell to London Heathrow Airport, which will take roughly 12h 10m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

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.

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

The travel and health documents you'll need for your trip to London 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. 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 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.

14:30 - 16:50

HLN

LHR

43h 20m

2 stops

11:35 - 20:59

LHR

HLN

16h 24m

1 stop

£581United Airlines

Mon, 7 Dec - Thu, 10 Dec

14:30 - 16:50

HLN

LHR

43h 20m

2 stops

11:10 - 20:59

LHR

HLN

16h 49m

2 stops

£586United Airlines

Mon, 7 Dec - Thu, 10 Dec

14:30 - 08:30

HLN

LHR

35h 00m

2 stops

07:30 - 20:59

LHR

HLN

20h 29m

2 stops

£622United Airlines

Mon, 7 Dec - Thu, 10 Dec

07:00 - 08:25

HLN

LHR

42h 25m

2 stops

07:30 - 20:59

LHR

HLN

20h 29m

2 stops

£624United Airlines

Mon, 7 Dec - Thu, 10 Dec

16:57 - 12:20

GTF

LHR

12h 23m

1 stop

14:45 - 16:17

LHR

GTF

32h 32m

1 stop

£638Alaska Airlines

Tue, 3 Nov - Tue, 17 Nov

05:33 - 10:00

MSO

LHR

21h 27m

1 stop

08:40 - 19:57

LHR

MSO

18h 17m

2 stops

£648Delta

Mon, 16 Nov - Thu, 19 Nov

12:25 - 10:00

FCA

LHR

14h 35m

1 stop

17:50 - 17:35

LHR

FCA

30h 45m

2 stops

£648KLM

Mon, 9 Nov - Wed, 18 Nov

13:18 - 10:00

GTF

LHR

13h 42m

1 stop

17:50 - 17:41

LHR

GTF

30h 51m

2 stops

£648Multiple Airlines

Tue, 3 Nov - Tue, 17 Nov

05:33 - 10:00

MSO

LHR

21h 27m

1 stop

08:40 - 19:57

LHR

MSO

18h 17m

2 stops

£649Delta

Mon, 16 Nov - Thu, 19 Nov

05:40 - 10:00

GTF

LHR

21h 20m

1 stop

10:00 - 17:41

LHR

GTF

38h 41m

2 stops

£649Delta

Mon, 2 Nov - Thu, 19 Nov

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Air France flights from Montana to London

Our best Air France deals on Montana to London flight tickets

Air France

18 Nov

FCA12:25Kalispell Glacier Park

18h 20m

2 stops

LHR13:45London Heathrow

23 Nov

LHR19:20London Heathrow

29h 15m

2 stops

FCA17:35Kalispell Glacier Park

£667

Air France

18 Nov

FCA12:25Kalispell Glacier Park

18h 20m

2 stops

LHR13:45London Heathrow

23 Nov

LHR19:20London Heathrow

29h 15m

2 stops

FCA17:35Kalispell Glacier Park

£667

Air France

20 Oct

MSO08:33Missoula Johnson-Bell Field

18h 47m

1 stop

LHR10:20London Heathrow

30 Oct

LHR06:20London Heathrow

19h 34m

2 stops

MSO19:54Missoula Johnson-Bell Field

£675

KLM flights from Montana to London

Our best KLM deals on Montana to London flight tickets

KLM

9 Nov

FCA12:25Kalispell Glacier Park

14h 35m

1 stop

LHR10:00London Heathrow

18 Nov

LHR17:50London Heathrow

30h 45m

2 stops

FCA17:35Kalispell Glacier Park

£648

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

£649

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

£652

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

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

£581

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

£586

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 7/12

14:30-08:30

2 stops35h 00m

London Heathrow

Thu 10/12

07:30-20:59

2 stops20h 29m

£622

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

£624

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 3/11

16:57-12:20

1 stop12h 23m

London Heathrow

Tue 17/11

14:45-16:17

1 stop32h 32m

£638

Fastest return journey

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 16/11

05:33-10:00

1 stop21h 27m

London Heathrow

Thu 19/11

08:40-19:57

2 stops18h 17m

£648

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 9/11

12:25-10:00

1 stop14h 35m

London Heathrow

Wed 18/11

17:50-17:35

2 stops30h 45m

£648

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 3/11

13:18-10:00

1 stop13h 42m

London Heathrow

Tue 17/11

17:50-17:41

2 stops30h 51m

£648

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 16/11

05:33-10:00

1 stop21h 27m

London Heathrow

Thu 19/11

08:40-19:57

2 stops18h 17m

£649

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 2/11

05:40-10:00

1 stop21h 20m

London Heathrow

Thu 19/11

10:00-17:41

2 stops38h 41m

£649

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

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?

The cheapest month to fly to London from Montana is in October. Flight prices, which tend to average around £574, are often lower during this time because this is during the off-season. The month of April is another great option to travel to London, with average flight prices from Montana averaging around £601.

Can stopping save me money on Montana to London flights?

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

Cheap Montana to London flight deals and tips

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

Fastest flight time	11h 55m
Direct flights	None

The fastest flight from Montana to London takes 11h 55m

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

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Frequently asked questions about flying from Montana to London

When did momondo last update prices for flights from Montana to London?
Prices for flights from Montana to London were last updated today.
How old do you have to be to fly from Montana to London?
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.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Eastbourne

Wembley

Gatwick

Milton Keynes

Luton

Southend-on-Sea

Slough

Ipswich

Maidstone

Folkestone

Ilford

Hastings

Canterbury

Guildford

Chichester

Bedford

Hayes

Colchester

Harlow

Chelmsford

Why use momondo?

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

It is quick and easy to find Montana to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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?

Once you have performed a search for Montana to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Montana to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Montana to London from £248

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to London departing on 25/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air France flights from Montana to London

Our best Air France deals on Montana to London flight tickets

KLM flights from Montana to London

Our best KLM deals on Montana to London flight tickets

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How to get the cheapest flight ticket from Montana to London

What is the cheapest month to fly to London?

Can stopping save me money on Montana to London flights?

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

How long does it take to fly to London?

Cheap Montana to London flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from Montana to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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