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Cheap flights from Montana to London from $425

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 1/4. 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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0 bags

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Find the cheapest flights from Montana to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
3:00 pm - 12:50 pmBZN-LHR
14h 50m1 stop
Virgin Atlantic Logo
11:05 am - 11:37 pmLHR-BZN
19h 32m1 stop
$585Virgin Atlantic
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Mon, Dec 8 - Mon, Dec 15
Delta Logo
6:10 pm - 10:00 amGTF-LHR
32h 50m1 stop
Delta Logo
6:20 am - 5:28 pmLHR-GTF
18h 08m2 stops
$589Delta
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Sun, Nov 23 - Wed, Dec 10
KLM Logo
1:12 pm - 10:00 amGTF-LHR
13h 48m1 stop
KLM Logo
8:25 pm - 5:28 pmLHR-GTF
28h 03m2 stops
$590KLM
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Mon, Nov 24 - Thu, Dec 11
Multiple Airlines Logo
5:25 am - 10:00 amMSO-LHR
21h 35m1 stop
Multiple Airlines Logo
8:40 am - 9:53 pmLHR-MSO
20h 13m2 stops
$590Multiple Airlines
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Wed, Nov 26 - Wed, Dec 3
Multiple Airlines Logo
5:25 am - 10:00 amMSO-LHR
21h 35m1 stop
Multiple Airlines Logo
11:05 am - 9:53 pmLHR-MSO
17h 48m1 stop
$596Multiple Airlines
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Wed, Nov 26 - Wed, Dec 3
KLM Logo
7:23 am - 10:30 amBZN-LHR
20h 07m1 stop
KLM Logo
8:25 pm - 5:48 pmLHR-BZN
28h 23m2 stops
$623KLM
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Thu, Jan 8 - Tue, Jan 13
United Airlines Logo
2:37 pm - 9:40 amMSO-LHR
12h 03m1 stop
United Airlines Logo
6:35 am - 9:51 pmLHR-MSO
22h 16m2 stops
$625United Airlines
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Tue, Jan 13 - Tue, Jan 27
United Airlines Logo
2:30 pm - 9:40 amGTF-LHR
12h 10m1 stop
United Airlines Logo
6:30 am - 9:32 pmLHR-GTF
22h 02m2 stops
$627United Airlines
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Mon, Nov 24 - Thu, Dec 11
Lufthansa Logo
12:46 pm - 3:50 pmBZN-LHR
20h 04m2 stops
Lufthansa Logo
7:30 am - 9:10 pmLHR-BZN
19h 40m2 stops
$709Lufthansa
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Thu, Jan 15 - Thu, Mar 12
Lufthansa Logo
2:43 pm - 2:40 pmBZN-LHR
16h 57m2 stops
Lufthansa Logo
6:55 am - 9:17 pmLHR-BZN
21h 22m2 stops
$804Lufthansa
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Tue, Apr 14 - Tue, Apr 28

Virgin Atlantic flights from Montana to London Heathrow Airport

Our best Virgin Atlantic deals on Montana to London Heathrow Airport flight tickets
Virgin Atlantic
Dec 8
BZN3:00 pmBozeman Gallatin Field
14h 50m
1 stop
LHR12:50 pmLondon Heathrow
Dec 15
LHR11:05 amLondon Heathrow
19h 32m
1 stop
BZN11:37 pmBozeman Gallatin Field
$585
Find similar
Virgin Atlantic
Feb 4
BZN3:00 pmBozeman Gallatin Field
12h 30m
1 stop
LHR10:30 amLondon Heathrow
Feb 11
LHR6:20 amLondon Heathrow
23h 07m
2 stops
BZN10:27 pmBozeman Gallatin Field
$597
Find similar
Virgin Atlantic
Dec 8
BZN11:45 amBozeman Gallatin Field
15h 30m
2 stops
LHR10:15 amLondon Heathrow
Dec 15
LHR1:05 pmLondon Heathrow
17h 32m
2 stops
BZN11:37 pmBozeman Gallatin Field
$600
Find similar

Delta flights from Montana to London Heathrow Airport

Our best Delta deals on Montana to London Heathrow Airport flight tickets
Delta
Nov 23
GTF6:10 pmGreat Falls
32h 50m
1 stop
LHR10:00 amLondon Heathrow
Dec 10
LHR6:20 amLondon Heathrow
18h 08m
2 stops
GTF5:28 pmGreat Falls
$589
Find similar
Delta
Nov 24
GTF5:30 amGreat Falls
18h 35m
2 stops
LHR7:05 amLondon Heathrow
Dec 10
LHR6:20 amLondon Heathrow
18h 08m
2 stops
GTF5:28 pmGreat Falls
$593
Find similar
Delta
Nov 24
GTF1:12 pmGreat Falls
13h 48m
1 stop
LHR10:00 amLondon Heathrow
Dec 10
LHR10:45 amLondon Heathrow
32h 46m
1 stop
GTF12:31 pmGreat Falls
$596
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momondo Fare Finder

 
Customize your flight search to find flights from Montana to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 10, 2025.
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

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Mon 12/8

3:00 pm-12:50 pm

1 stop14h 50m

London Heathrow

Mon 12/15

11:05 am-11:37 pm

1 stop19h 32m

$585

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 11/23

6:10 pm-10:00 am

1 stop32h 50m

London Heathrow

Wed 12/10

6:20 am-5:28 pm

2 stops18h 08m

$589

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 11/24

1:12 pm-10:00 am

1 stop13h 48m

London Heathrow

Thu 12/11

8:25 pm-5:28 pm

2 stops28h 03m

$590

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

5:25 am-10:00 am

1 stop21h 35m

London Heathrow

Wed 12/3

8:40 am-9:53 pm

2 stops20h 13m

$590

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Wed 11/26

5:25 am-10:00 am

1 stop21h 35m

London Heathrow

Wed 12/3

11:05 am-9:53 pm

1 stop17h 48m

$596

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Thu 1/8

7:23 am-10:30 am

1 stop20h 07m

London Heathrow

Tue 1/13

8:25 pm-5:48 pm

2 stops28h 23m

$623

MissoulaLondon

MSO - LHR

MSOLHR

Missoula Johnson-Bell Field

Tue 1/13

2:37 pm-9:40 am

1 stop12h 03m

London Heathrow

Tue 1/27

6:35 am-9:51 pm

2 stops22h 16m

$625

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 11/24

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Thu 12/11

6:30 am-9:32 pm

2 stops22h 02m

$627

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Thu 1/15

12:46 pm-3:50 pm

2 stops20h 04m

London Heathrow

Thu 3/12

7:30 am-9:10 pm

2 stops19h 40m

$709

BozemanLondon

BZN - LHR

BZNLHR

Bozeman Gallatin Field

Tue 4/14

2:43 pm-2:40 pm

2 stops16h 57m

London Heathrow

Tue 4/28

6:55 am-9:17 pm

2 stops21h 22m

$804

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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

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

The month of January is, on average, the cheapest month to fly to London Heathrow Airport from Montana, with most prices found around $604. If you’re not able to fly to London Heathrow Airport in January, then February is your next best option. Flight prices from Montana to London Heathrow Airport during February average around $732.

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

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $716. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $1,069.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from Montana to London Heathrow Airport at noon for as low as $790. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $852.

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

You could potentially save up to 33% 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

Direct flights

None
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

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 required for your trip to London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport

Compare and see reviews for airlines that fly from Montana to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $645Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
DeltaPriceFrom $677Free CancellationRating
7.9
8,004 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Stratford-upon-Avon
Crawley
Brentwood
Chelmsford
Salisbury
Wembley
Folkestone
Romford
Ilford
Cobham
Swindon

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Montana to London for you.

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

Yes. momondo enables you to select and highlight flights to London from Montana with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Montana.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Montana and alert you when they change.

An easier way to manage your London Heathrow Airport trip

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