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

United Airlines, JetBlue, and KLM are the most popular carriers operating from Montana to London

How long does it take to fly to London?

If you’re flying from a popular airport in Montana, such as Billings or Kalispell, and flying into London, then you can expect flight times to average 12h 05m and 12h 07m, respectively.

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 February 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.

$225 Cheap Flights from Montana to London in 2026

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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.

2:27 pm - 12:20 pm

MSO

LHR

14h 53m

1 stop

9:30 am - 10:30 pm

LHR

MSO

20h 00m

2 stops

$671United Airlines

Wed, Aug 12 - Wed, Aug 26

6:15 am - 11:35 am

MSO

LHR

22h 20m

2 stops

9:30 am - 10:30 pm

LHR

MSO

20h 00m

2 stops

$676United Airlines

Wed, Aug 12 - Wed, Aug 26

2:53 pm - 1:15 pm

BZN

LHR

15h 22m

1 stop

6:30 am - 8:11 pm

LHR

BZN

20h 41m

2 stops

$816Delta

Sun, Apr 19 - Tue, May 5

6:34 pm - 8:10 pm

BZN

LHR

18h 36m

2 stops

8:40 am - 8:11 pm

LHR

BZN

18h 31m

2 stops

$820Delta

Sun, Apr 19 - Tue, May 5

3:19 pm - 12:10 pm

BZN

LHR

13h 51m

1 stop

8:55 pm - 8:11 pm

LHR

BZN

30h 16m

2 stops

$821Virgin Atlantic

Sun, Apr 12 - Tue, Apr 28

5:58 am - 1:05 pm

BZN

LHR

24h 07m

1 stop

10:55 am - 5:54 pm

LHR

BZN

13h 59m

1 stop

$835Multiple Airlines

Sun, Apr 12 - Tue, Apr 28

1:45 pm - 1:05 pm

BZN

LHR

16h 20m

1 stop

11:40 am - 10:40 pm

LHR

BZN

18h 00m

1 stop

$844KLM

Tue, Apr 14 - Tue, Apr 28

2:01 pm - 1:05 pm

BZN

LHR

16h 04m

1 stop

6:30 am - 5:54 pm

LHR

BZN

18h 24m

2 stops

$846KLM

Tue, Apr 7 - Tue, Apr 14

12:10 pm - 10:00 am

FCA

LHR

14h 50m

1 stop

6:30 am - 11:27 pm

LHR

FCA

23h 57m

2 stops

$852Virgin Atlantic

Wed, Apr 8 - Wed, Apr 15

7:00 am - 8:35 am

BIL

LHR

18h 35m

3 stops

2:10 pm - 1:23 pm

LHR

BIL

30h 13m

2 stops

$872Multiple Airlines

Tue, Apr 7 - Tue, Apr 14

United Airlines flights from Montana to London

Our best United Airlines deals on Montana to London flight tickets

United Airlines

Aug 12

MSO2:27 pmMissoula Johnson-Bell Field

14h 53m

1 stop

LHR12:20 pmLondon Heathrow

Aug 26

LHR9:30 amLondon Heathrow

20h 00m

2 stops

MSO10:30 pmMissoula Johnson-Bell Field

$671

United Airlines

Aug 12

MSO6:15 amMissoula Johnson-Bell Field

22h 20m

2 stops

LHR11:35 amLondon Heathrow

Aug 26

LHR9:30 amLondon Heathrow

20h 00m

2 stops

MSO10:30 pmMissoula Johnson-Bell Field

$676

United Airlines

Aug 12

MSO2:27 pmMissoula Johnson-Bell Field

14h 53m

1 stop

LHR12:20 pmLondon Heathrow

Aug 26

LHR2:50 pmLondon Heathrow

13h 36m

1 stop

MSO9:26 pmMissoula Johnson-Bell Field

$688

Air Canada flights from Montana to London

Our best Air Canada deals on Montana to London flight tickets

Air Canada

Apr 7

BIL7:00 amBillings Logan Intl

18h 35m

3 stops

LHR8:35 amLondon Heathrow

Apr 14

LHR8:30 amLondon Heathrow

19h 27m

3 stops

BIL8:57 pmBillings Logan Intl

$895

Air Canada

Apr 10

BIL10:38 amBillings Logan Intl

18h 12m

3 stops

LHR11:50 amLondon Heathrow

Apr 17

LHR2:10 pmLondon Heathrow

26h 28m

3 stops

BIL9:38 amBillings Logan Intl

$960

Air Canada

Jun 3

BIL7:00 amBillings Logan Intl

16h 30m

2 stops

LHR6:30 amLondon Heathrow

Jun 12

LHR9:30 amLondon Heathrow

44h 21m

2 stops

BIL10:51 pmBillings Logan Intl

$1,050

Fly from

Fly to

Route

Depart

Return

Price

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 8/12

2:27 pm-12:20 pm

1 stop14h 53m

London Heathrow

Wed 8/26

9:30 am-10:30 pm

2 stops20h 00m

$671

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 8/12

6:15 am-11:35 am

2 stops22h 20m

London Heathrow

Wed 8/26

9:30 am-10:30 pm

2 stops20h 00m

$676

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 4/19

2:53 pm-1:15 pm

1 stop15h 22m

London Heathrow

Tue 5/5

6:30 am-8:11 pm

2 stops20h 41m

$816

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 4/19

6:34 pm-8:10 pm

2 stops18h 36m

London Heathrow

Tue 5/5

8:40 am-8:11 pm

2 stops18h 31m

$820

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 4/12

3:19 pm-12:10 pm

1 stop13h 51m

London Heathrow

Tue 4/28

8:55 pm-8:11 pm

2 stops30h 16m

$821

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 4/12

5:58 am-1:05 pm

1 stop24h 07m

London Heathrow

Tue 4/28

10:55 am-5:54 pm

1 stop13h 59m

$835

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 4/14

1:45 pm-1:05 pm

1 stop16h 20m

London Heathrow

Tue 4/28

11:40 am-10:40 pm

1 stop18h 00m

$844

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 4/7

2:01 pm-1:05 pm

1 stop16h 04m

London Heathrow

Tue 4/14

6:30 am-5:54 pm

2 stops18h 24m

$846

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Wed 4/8

12:10 pm-10:00 am

1 stop14h 50m

London Heathrow

Wed 4/15

6:30 am-11:27 pm

2 stops23h 57m

$852

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 4/7

7:00 am-8:35 am

3 stops18h 35m

London Heathrow

Tue 4/14

2:10 pm-1:23 pm

2 stops30h 13m

$872

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 $689, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Montana averaging around $730.

Can stopping save me money on Montana to London flights?

You could potentially save up to 7% 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 05m
Direct flights	None

The fastest flight from Montana to London takes 12h 05m

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

Search flight deals

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 February 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
Delta	PriceFrom $604	Free Cancellation	Rating 7.9 8,237 reviews		Search Delta flights
United Airlines	PriceFrom $645	Free Cancellation	Rating 7.4 9,345 reviews		Search United Airlines flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Crawley

Hayes

Wembley

Dartford

Brentwood

Croydon

Guildford

Harrow

Watford

Cobham

Folkestone

Romford

Stansted

Richmond

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.

An easier way to manage your London trip

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Cheap flights from Montana to London from $225

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 7/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

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Filter for what you want

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United Airlines flights from Montana to London

Our best United Airlines deals on Montana to London flight tickets

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Our best Air Canada 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

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

Fastest flight time

Direct flights

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?

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

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

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

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

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.

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Montana

According to popular flight searches on momondo this year

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