How long does it take to fly to London?

If you’re flying from a popular airport in Montana, such as Bozeman or Kalispell, and flying into London, then you can expect flight times to average 12h 10m and 12h 11m, respectively.

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

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

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

Prices for flights from Montana to London are refreshed on a daily basis.

How many operators does momondo search for flights from Montana to London?

There are 2 operators available for flights from Montana to London as of August 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$334 Cheap Flights from Montana to London in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montana to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 4:50 pm

HLN

LHR

43h 20m

2 stops

11:35 am - 8:59 pm

LHR

HLN

16h 24m

1 stop

$783United Airlines

Mon, Dec 7 - Thu, Dec 10

2:30 pm - 4:50 pm

HLN

LHR

43h 20m

2 stops

11:10 am - 8:59 pm

LHR

HLN

16h 49m

2 stops

$791United Airlines

Mon, Dec 7 - Thu, Dec 10

7:00 am - 8:30 am

HLN

LHR

42h 30m

2 stops

7:30 am - 8:59 pm

LHR

HLN

20h 29m

2 stops

$835United Airlines

Mon, Dec 7 - Thu, Dec 10

2:30 pm - 8:30 am

HLN

LHR

35h 00m

2 stops

7:30 am - 8:59 pm

LHR

HLN

20h 29m

2 stops

$839United Airlines

Mon, Dec 7 - Thu, Dec 10

5:33 am - 10:00 am

MSO

LHR

21h 27m

1 stop

8:40 am - 7:57 pm

LHR

MSO

18h 17m

2 stops

$874Delta

Mon, Nov 16 - Thu, Nov 19

8:30 am - 7:05 am

MSO

LHR

15h 35m

1 stop

6:30 am - 7:57 pm

LHR

MSO

20h 27m

2 stops

$874KLM

Mon, Nov 16 - Thu, Nov 19

12:25 pm - 10:00 am

FCA

LHR

14h 35m

1 stop

5:05 pm - 5:35 pm

LHR

FCA

31h 30m

2 stops

$874KLM

Mon, Nov 9 - Tue, Dec 8

1:18 pm - 10:00 am

GTF

LHR

13h 42m

1 stop

5:50 pm - 5:41 pm

LHR

GTF

30h 51m

2 stops

$874Multiple Airlines

Tue, Nov 3 - Tue, Nov 17

5:33 am - 10:00 am

MSO

LHR

21h 27m

1 stop

8:40 am - 7:57 pm

LHR

MSO

18h 17m

2 stops

$875Delta

Mon, Nov 16 - Thu, Nov 19

5:33 am - 10:00 am

MSO

LHR

21h 27m

1 stop

8:40 am - 7:57 pm

LHR

MSO

18h 17m

2 stops

$876Delta

Mon, Nov 16 - Thu, Nov 19

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SWISS flights from Montana to London

Our best SWISS deals on Montana to London flight tickets

SWISS

Nov 15

GTF6:30 amGreat Falls

18h 25m

2 stops

LHR7:55 amLondon Heathrow

Dec 9

LHR11:35 amLondon Heathrow

16h 45m

1 stop

GTF9:20 pmGreat Falls

$962

SWISS

Oct 22

MSO2:38 pmMissoula Johnson-Bell Field

12h 02m

1 stop

LHR9:40 amLondon Heathrow

Oct 30

LHR10:25 amLondon Heathrow

17h 22m

2 stops

MSO9:47 pmMissoula Johnson-Bell Field

$1,022

KLM flights from Montana to London

Our best KLM deals on Montana to London flight tickets

KLM

Nov 9

FCA12:25 pmKalispell Glacier Park

14h 35m

1 stop

LHR10:00 amLondon Heathrow

Nov 18

LHR5:50 pmLondon Heathrow

30h 45m

2 stops

FCA5:35 pmKalispell Glacier Park

$874

KLM

Nov 3

GTF5:40 amGreat Falls

21h 20m

1 stop

LHR10:00 amLondon Heathrow

Nov 17

LHR5:50 pmLondon Heathrow

30h 51m

2 stops

GTF5:41 pmGreat Falls

$876

KLM

Nov 3

GTF5:40 amGreat Falls

18h 25m

2 stops

LHR7:05 amLondon Heathrow

Nov 17

LHR8:25 pmLondon Heathrow

28h 16m

2 stops

GTF5:41 pmGreat Falls

$880

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 12/7

2:30 pm-4:50 pm

2 stops43h 20m

London Heathrow

Thu 12/10

11:35 am-8:59 pm

1 stop16h 24m

$783

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 12/7

2:30 pm-4:50 pm

2 stops43h 20m

London Heathrow

Thu 12/10

11:10 am-8:59 pm

2 stops16h 49m

$791

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 12/7

7:00 am-8:30 am

2 stops42h 30m

London Heathrow

Thu 12/10

7:30 am-8:59 pm

2 stops20h 29m

$835

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 12/7

2:30 pm-8:30 am

2 stops35h 00m

London Heathrow

Thu 12/10

7:30 am-8:59 pm

2 stops20h 29m

$839

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 11/16

5:33 am-10:00 am

1 stop21h 27m

London Heathrow

Thu 11/19

8:40 am-7:57 pm

2 stops18h 17m

$874

Quickest round-trip

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 11/16

8:30 am-7:05 am

1 stop15h 35m

London Heathrow

Thu 11/19

6:30 am-7:57 pm

2 stops20h 27m

$874

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Mon 11/9

12:25 pm-10:00 am

1 stop14h 35m

London Heathrow

Tue 12/8

5:05 pm-5:35 pm

2 stops31h 30m

$874

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 11/3

1:18 pm-10:00 am

1 stop13h 42m

London Heathrow

Tue 11/17

5:50 pm-5:41 pm

2 stops30h 51m

$874

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 11/16

5:33 am-10:00 am

1 stop21h 27m

London Heathrow

Thu 11/19

8:40 am-7:57 pm

2 stops18h 17m

$875

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Mon 11/16

5:33 am-10:00 am

1 stop21h 27m

London Heathrow

Thu 11/19

8:40 am-7:57 pm

2 stops18h 17m

$876

Flights are sorted by cheapest round-trip 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 $774, 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 $811.

Can stopping save me money on Montana to London flights?

You could potentially save up to 1% 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	12h 10m
Direct flights	None

The fastest flight from Montana to London takes 12h 10m

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

Search flight deals

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 are refreshed on a daily basis.
How many operators does momondo search for flights from Montana to London?
There are 2 operators available for flights from Montana to London as of August 2026.
How old do you have to be to fly from Montana to London?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Montana to London

Compare and see reviews for airlines that fly from Montana to London with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $556	Free Cancellation	Rating 7.4 10,058 reviews		Search United Airlines flights
Delta	PriceFrom $604	Free Cancellation	Rating 7.8 8,483 reviews		Search Delta flights

Hounslow

Gatwick

Milton Keynes

Luton

Hayes

Wembley

Dover

Croydon

Stansted

Kingston upon Thames

Slough

Harrow

Watford

Cobham

Richmond

Uxbridge

Worthing

Romford

Ilford

Dunstable

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montana to London. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to London from Montana which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to London from Montana. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

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Cheap flights from Montana to London from $334

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 11/25. 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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SWISS flights from Montana to London

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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

Best airlines flying from Montana to London

Compare and see reviews for airlines that fly from Montana to London with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize 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

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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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