How do I get Price Alerts for flights from Great Falls to London?

Search flight deals from Great Falls to London . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Great Falls to London with momondo?

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

When did momondo last update prices for flights from Great Falls Airport to London?

Prices for flights from Great Falls Airport to London are refreshed on a daily basis.

How old do you have to be to fly from Great Falls Airport to London?

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 Great Falls Airport to London.

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

The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£671 Cheap Flights from Great Falls to London in 2026

Find the cheapest flights from Great Falls to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:30 - 09:40GTF Great Falls-LHR London Heathrow

20h 10m1 stop Denver Intl

06:35 - 21:38LHR London Heathrow-GTF Great Falls

22h 03m2 stops Munich Franz Josef Strauss Denver Intl

£671United Airlines

Sun, 8 Nov - Tue, 17 Nov

06:30 - 09:40GTF Great Falls-LHR London Heathrow

20h 10m1 stop Denver Intl

06:35 - 21:50LHR London Heathrow-GTF Great Falls

22h 15m2 stops Munich Franz Josef Strauss Denver Intl

£671United Airlines

Sun, 15 Nov - Thu, 3 Dec

14:45 - 07:10GTF Great Falls-LHR London Heathrow

33h 25m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

06:35 - 13:49LHR London Heathrow-GTF Great Falls

38h 14m2 stops Munich Franz Josef Strauss Denver Intl

£674United Airlines

Sun, 8 Nov - Tue, 17 Nov

13:21 - 10:00GTF Great Falls-LHR London Heathrow

13h 39m1 stop Salt Lake City

06:20 - 17:39LHR London Heathrow-GTF Great Falls

18h 19m2 stops Paris Charles de Gaulle Salt Lake City

£677Delta

Wed, 18 Nov - Thu, 3 Dec

06:30 - 09:40GTF Great Falls-LHR London Heathrow

20h 10m1 stop Denver Intl

16:40 - 21:50LHR London Heathrow-GTF Great Falls

36h 10m2 stops Munich Franz Josef Strauss Denver Intl

£679United Airlines

Sun, 15 Nov - Wed, 2 Dec

18:19 - 06:20GTF Great Falls-LHR London Heathrow

29h 01m2 stops Salt Lake City New York John F Kennedy Intl

06:20 - 17:39LHR London Heathrow-GTF Great Falls

18h 19m2 stops Paris Charles de Gaulle Salt Lake City

£679Delta

Sat, 14 Nov - Thu, 3 Dec

14:45 - 09:40GTF Great Falls-LHR London Heathrow

11h 55m1 stop Denver Intl

11:35 - 21:38LHR London Heathrow-GTF Great Falls

17h 03m1 stop Denver Intl

£691United Airlines

Sun, 8 Nov - Fri, 20 Nov

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£692Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£693Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

14:45 - 07:10GTF Great Falls-LHR London Heathrow

33h 25m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

11:35 - 21:50LHR London Heathrow-GTF Great Falls

17h 15m1 stop Denver Intl

£695United Airlines

Sat, 14 Nov - Thu, 3 Dec

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United Airlines flights from Great Falls to London

Our best United Airlines deals on Great Falls to London flight tickets

United Airlines

8 Nov

GTF06:30Great Falls

20h 10m

1 stop

LHR09:40London Heathrow

17 Nov

LHR06:35London Heathrow

22h 03m

2 stops

GTF21:38Great Falls

£671

United Airlines

15 Nov

GTF06:30Great Falls

20h 10m

1 stop

LHR09:40London Heathrow

3 Dec

LHR06:35London Heathrow

22h 15m

2 stops

GTF21:50Great Falls

£671

United Airlines

8 Nov

GTF14:45Great Falls

33h 25m

2 stops

LHR07:10London Heathrow

17 Nov

LHR06:35London Heathrow

38h 14m

2 stops

GTF13:49Great Falls

£674

KLM flights from Great Falls to London

Our best KLM deals on Great Falls to London flight tickets

KLM

16 Nov

GTF05:30Great Falls

18h 35m

2 stops

LHR07:05London Heathrow

30 Nov

LHR20:25London Heathrow

28h 14m

2 stops

GTF17:39Great Falls

£722

KLM

15 Sept

GTF13:15Great Falls

19h 20m

2 stops

LHR15:35London Heathrow

30 Sept

LHR11:20London Heathrow

18h 17m

2 stops

GTF22:37Great Falls

£785

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

06:30-09:40

1 stop20h 10m

London Heathrow

Tue 17/11

06:35-21:38

2 stops22h 03m

£671

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 15/11

06:30-09:40

1 stop20h 10m

London Heathrow

Thu 3/12

06:35-21:50

2 stops22h 15m

£671

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

14:45-07:10

2 stops33h 25m

London Heathrow

Tue 17/11

06:35-13:49

2 stops38h 14m

£674

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 18/11

13:21-10:00

1 stop13h 39m

London Heathrow

Thu 3/12

06:20-17:39

2 stops18h 19m

£676

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 15/11

06:30-09:40

1 stop20h 10m

London Heathrow

Wed 2/12

16:40-21:50

2 stops36h 10m

£679

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sat 14/11

18:19-06:20

2 stops29h 01m

London Heathrow

Thu 3/12

06:20-17:39

2 stops18h 19m

£679

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

14:45-09:40

1 stop11h 55m

London Heathrow

Fri 20/11

11:35-21:38

1 stop17h 03m

£691

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£692

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£693

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sat 14/11

14:45-07:10

2 stops33h 25m

London Heathrow

Thu 3/12

11:35-21:50

1 stop17h 15m

£695

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Great Falls to London

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Great Falls to London (GTF to LON) flight deals and tips

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

Best price found	£671
Fastest flight time	11h 55m
Direct flights	None

The best flight deal from Great Falls to London found on momondo in the last 72 hours is £671

The fastest flight from Great Falls to London takes 11h 55m

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

Search flight deals

Frequently asked questions about flying from Great Falls to London

How far is Great Falls to London by plane?
The straight-line distance from Great Falls to London is 4477.2 mi. Flights usually cover this in 11h 55m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Great Falls Airport to London?
Prices for flights from Great Falls Airport to London are refreshed on a daily basis.
How old do you have to be to fly from Great Falls Airport to London?
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 Great Falls Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Great Falls to London

How do I get Price Alerts for flights from Great Falls to London?
Search flight deals from Great Falls to London. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Great Falls to London with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Eastbourne

Wembley

Gatwick

Milton Keynes

Southend-on-Sea

Luton

Slough

Ipswich

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Chichester

Hayes

Bedford

Guildford

Colchester

Harlow

Chelmsford

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Great Falls to London. momondo saves you time and could save you money on your trip.

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

Yes. All flights to London from Great Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Great Falls to London?

Once all potential Great Falls to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Great Falls 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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Fly into one of these airports located in London

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London Gatwick Airport

London Heathrow Airport

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London Stansted Airport

Cheap flights from Great Falls to London from £671

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to London departing on 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Great Falls to London

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

United Airlines flights from Great Falls to London

Our best United Airlines deals on Great Falls to London flight tickets

KLM flights from Great Falls to London

Our best KLM deals on Great Falls to London flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Great Falls to London that are best for you.

When to book flights from Great Falls to London

Cheap Great Falls to London (GTF to LON) flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Great Falls to London

Frequently asked questions about flying from Great Falls 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.

Popular Cities in the United Kingdom

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

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