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

KLM, Delta, and United Airlines 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 Bozeman, and flying into London, then you can expect flight times to average 11h 55m and 11h 57m, 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 September 2025.

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.

$384 Cheap Flights from Montana to London in 2025/26

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Find the cheapest flights from Montana to London

Round-trip

One-way

Last minute

Cheap round-trip flights

10:47 am - 7:55 amBZN-LHR

14h 08m2 stops

6:30 am - 9:40 pmLHR-BZN

22h 10m2 stops

$685Lufthansa

Find Deal

Wed, Nov 5 - Wed, Nov 19

6:35 am - 9:40 amBZN-LHR

20h 05m1 stop

9:30 am - 9:40 pmLHR-BZN

19h 10m2 stops

$686Lufthansa

Find Deal

Tue, Nov 4 - Tue, Nov 11

11:45 am - 9:50 amBIL-LHR

15h 05m1 stop

10:45 am - 10:25 pmLHR-BIL

17h 40m1 stop

$705Virgin Atlantic

Find Deal

Tue, Oct 21 - Tue, Oct 28

11:45 am - 9:50 amBIL-LHR

15h 05m1 stop

10:10 am - 10:25 pmLHR-BIL

18h 15m2 stops

$711Virgin Atlantic

Find Deal

Tue, Oct 21 - Tue, Oct 28

12:00 pm - 10:00 amFCA-LHR

15h 00m1 stop

8:25 pm - 5:26 pmLHR-FCA

28h 01m2 stops

$717KLM

Find Deal

Tue, Nov 4 - Tue, Nov 11

10:39 am - 8:20 amBIL-LHR

14h 41m2 stops

11:10 am - 10:49 pmLHR-BIL

17h 39m2 stops

$722Multiple Airlines

Find Deal

Tue, Oct 21 - Tue, Oct 28

7:00 am - 7:10 amBIL-LHR

17h 10m2 stops

7:40 am - 9:18 pmLHR-BIL

20h 38m2 stops

$728Multiple Airlines

Find Deal

Tue, Nov 4 - Tue, Nov 11

1:12 pm - 10:00 amGTF-LHR

13h 48m1 stop

8:25 pm - 5:30 pmLHR-GTF

28h 05m2 stops

$729KLM

Find Deal

Tue, Nov 11 - Tue, Nov 25

7:00 am - 12:20 pmBZN-LHR

22h 20m1 stop

6:30 am - 9:40 pmLHR-BZN

21h 10m2 stops

$729United Airlines

Find Deal

Sun, Oct 12 - Tue, Oct 28

6:20 am - 7:10 amMSO-LHR

18h 50m2 stops

6:00 pm - 9:47 pmLHR-MSO

34h 47m2 stops

$735United Airlines

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Sun, Oct 26 - Fri, Nov 7

Delta flights from Montana to London

Our best Delta deals on Montana to London flight tickets

Delta

Oct 27

MSO1:07 pmMissoula Johnson-Bell Field

14h 53m

1 stop

LHR10:00 amLondon Heathrow

Nov 7

LHR6:20 amLondon Heathrow

18h 20m

2 stops

MSO5:40 pmMissoula Johnson-Bell Field

$729

Find similar

Delta

Nov 5

FCA5:20 amKalispell Glacier Park

21h 55m

2 stops

LHR10:15 amLondon Heathrow

Nov 12

LHR6:20 amLondon Heathrow

18h 06m

2 stops

FCA5:26 pmKalispell Glacier Park

$733

Find similar

Delta

Nov 9

GTF6:10 pmGreat Falls

32h 50m

1 stop

LHR10:00 amLondon Heathrow

Nov 27

LHR10:45 amLondon Heathrow

13h 45m

1 stop

GTF5:30 pmGreat Falls

$752

Find similar

United Airlines flights from Montana to London

Our best United Airlines deals on Montana to London flight tickets

United Airlines

Oct 12

BZN7:00 amBozeman Gallatin Field

22h 20m

1 stop

LHR12:20 pmLondon Heathrow

Oct 28

LHR6:30 amLondon Heathrow

21h 10m

2 stops

BZN9:40 pmBozeman Gallatin Field

$729

Find similar

United Airlines

Oct 26

MSO6:20 amMissoula Johnson-Bell Field

18h 50m

2 stops

LHR7:10 amLondon Heathrow

Nov 7

LHR6:00 pmLondon Heathrow

34h 47m

2 stops

MSO9:47 pmMissoula Johnson-Bell Field

$735

Find similar

United Airlines

Jan 13

MSO6:00 amMissoula Johnson-Bell Field

20h 40m

1 stop

LHR9:40 amLondon Heathrow

Jan 27

LHR6:00 pmLondon Heathrow

34h 51m

2 stops

MSO9:51 pmMissoula Johnson-Bell Field

$736

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Wed 11/5

10:47 am-7:55 am

2 stops14h 08m

London Heathrow

Wed 11/19

6:30 am-9:40 pm

2 stops22h 10m

$685

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 11/4

6:35 am-9:40 am

1 stop20h 05m

London Heathrow

Tue 11/11

9:30 am-9:40 pm

2 stops19h 10m

$686

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 10/21

11:45 am-9:50 am

1 stop15h 05m

London Heathrow

Tue 10/28

10:45 am-10:25 pm

1 stop17h 40m

$705

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 10/21

11:45 am-9:50 am

1 stop15h 05m

London Heathrow

Tue 10/28

10:10 am-10:25 pm

2 stops18h 15m

$711

KalispellLondon

FCA - LHR

FCALHR

Kalispell Glacier Park

Tue 11/4

12:00 pm-10:00 am

1 stop15h 00m

London Heathrow

Tue 11/11

8:25 pm-5:26 pm

2 stops28h 01m

$717

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 10/21

10:39 am-8:20 am

2 stops14h 41m

London Heathrow

Tue 10/28

11:10 am-10:49 pm

2 stops17h 39m

$722

BillingsLondon

BIL - LHR

BILLHR

Billings Logan Intl

Tue 11/4

7:00 am-7:10 am

2 stops17h 10m

London Heathrow

Tue 11/11

7:40 am-9:18 pm

2 stops20h 38m

$728

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 11/11

1:12 pm-10:00 am

1 stop13h 48m

London Heathrow

Tue 11/25

8:25 pm-5:30 pm

2 stops28h 05m

$729

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Sun 10/12

7:00 am-12:20 pm

1 stop22h 20m

London Heathrow

Tue 10/28

6:30 am-9:40 pm

2 stops21h 10m

$729

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Sun 10/26

6:20 am-7:10 am

2 stops18h 50m

London Heathrow

Fri 11/7

6:00 pm-9:47 pm

2 stops34h 47m

$735

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 February is another great option to travel to London, with average flight prices from Montana averaging around $743.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Montana to London is on a Monday. Travelers who choose to depart for London on a Monday will often find tickets for as low as $800. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,005. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Montana in the morning is the least expensive time of day to depart. momondo users have found prices as low as $852 when looking at flights departing in the morning. Flights to London are more costly in the afternoon, with an average ticket price of $867. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Montana to London flights?

You could potentially save up to 26% 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

Direct flights	None

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 September 2025.
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 $645	Free Cancellation	Rating 7.4 8,922 reviews		Search United Airlines flights
Delta	PriceFrom $740	Free Cancellation	Rating 7.9 7,971 reviews		Search Delta flights

Gatwick

Hounslow

Dover

Luton

Slough

Milton Keynes

Hayes

Guildford

Dartford

Crawley

Stansted

Chelmsford

Brentwood

Ilford

Folkestone

Colchester

Watford

Wembley

Richmond

Croydon

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

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.

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Find better results for your trip to the United Kingdom

Cheap flights from Montana to London from $384

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 12/10. 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

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Montana to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Delta flights from Montana to London

Our best Delta deals on Montana to London flight tickets

United Airlines flights from Montana to London

Our best United Airlines deals on Montana to London flight tickets

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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

What is the cheapest month to fly to London?

What is the cheapest day to depart on your flight to London?

What is the cheapest time of day to depart on your flight to London?

Can stopping save me money on Montana to London flights?

You could potentially save up to 26% on your flight if you consider stops on a Montana to London flight.

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

KLM, Delta, and United Airlines 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 Bozeman, and flying into London, then you can expect flight times to average 11h 55m and 11h 57m, respectively.

Cheap Montana to London flight deals and tips

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

Direct flights

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

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

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

What documentation or ID do you need to fly 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?

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