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.

£605 Cheap Flights from Great Falls to London in 2026/27

Find the cheapest flights from Great Falls to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

18:27 - 20:10GTF Great Falls-LHR London Heathrow

18h 43m2 stops Salt Lake City New York John F Kennedy Intl

06:20 - 22:30LHR London Heathrow-GTF Great Falls

23h 10m2 stops Paris Charles de Gaulle Salt Lake City

£605Delta

Thu, 5 Nov - Thu, 12 Nov

13:18 - 10:00GTF Great Falls-LHR London Heathrow

13h 42m1 stop Salt Lake City

10:45 - 17:39LHR London Heathrow-GTF Great Falls

13h 54m1 stop Salt Lake City

£622Delta

Wed, 4 Nov - Sun, 15 Nov

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

11h 55m1 stop Denver Intl

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

38h 14m2 stops Munich Franz Josef Strauss Denver Intl

£653United Airlines

Thu, 5 Nov - Thu, 12 Nov

13:18 - 10:00GTF Great Falls-LHR London Heathrow

13h 42m1 stop Salt Lake City

10:45 - 17:39LHR London Heathrow-GTF Great Falls

13h 54m1 stop Salt Lake City

£660Delta

Fri, 6 Nov - Sun, 15 Nov

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

£675United Airlines

Tue, 3 Nov - Fri, 13 Nov

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

£690Multiple Airlines

Thu, 5 Nov - Thu, 12 Nov

06:15 - 12:35GTF Great Falls-LHR London Heathrow

23h 20m1 stop Denver Intl

18:00 - 13:49LHR London Heathrow-GTF Great Falls

49h 49m2 stops Toronto Pearson Intl Denver Intl

£709United Airlines

Sun, 11 Oct - Sun, 25 Oct

06:15 - 20:40GTF Great Falls-LHR London Heathrow

31h 25m2 stops Denver Intl Newark

18:00 - 13:49LHR London Heathrow-GTF Great Falls

49h 49m2 stops Toronto Pearson Intl Denver Intl

£717United Airlines

Sun, 11 Oct - Sun, 25 Oct

14:45 - 22:55GTF Great Falls-LHR London Heathrow

25h 10m2 stops Denver Intl Munich Franz Josef Strauss

15:00 - 21:38LHR London Heathrow-GTF Great Falls

37h 38m2 stops Toronto Pearson Intl Denver Intl

£832United Airlines

Mon, 16 Nov - Wed, 18 Nov

06:30 - 15:50GTF Great Falls-LHR London Heathrow

26h 20m2 stops Denver Intl Munich Franz Josef Strauss

15:00 - 21:38LHR London Heathrow-GTF Great Falls

37h 38m2 stops Toronto Pearson Intl Denver Intl

£833United Airlines

Mon, 16 Nov - Wed, 18 Nov

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Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

Delta

5 Nov

GTF18:27Great Falls

18h 43m

2 stops

LHR20:10London Heathrow

12 Nov

LHR06:20London Heathrow

23h 10m

2 stops

GTF22:30Great Falls

£605

Delta

4 Nov

GTF13:18Great Falls

13h 42m

1 stop

LHR10:00London Heathrow

15 Nov

LHR10:45London Heathrow

13h 54m

1 stop

GTF17:39Great Falls

£622

Delta

6 Nov

GTF13:18Great Falls

13h 42m

1 stop

LHR10:00London Heathrow

15 Nov

LHR10:45London Heathrow

13h 54m

1 stop

GTF17:39Great Falls

£660

United Airlines flights from Great Falls to London

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

United Airlines

5 Nov

GTF14:45Great Falls

11h 55m

1 stop

LHR09:40London Heathrow

12 Nov

LHR06:35London Heathrow

38h 14m

2 stops

GTF13:49Great Falls

£653

United Airlines

3 Nov

GTF14:45Great Falls

11h 55m

1 stop

LHR09:40London Heathrow

13 Nov

LHR11:35London Heathrow

17h 03m

1 stop

GTF21:38Great Falls

£675

United Airlines

16 Nov

GTF14:45Great Falls

25h 10m

2 stops

LHR22:55London Heathrow

18 Nov

LHR15:00London Heathrow

37h 38m

2 stops

GTF21:38Great Falls

£832

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 5/11

18:27-20:10

2 stops18h 43m

London Heathrow

Thu 12/11

06:20-22:30

2 stops23h 10m

£605

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 4/11

13:18-10:00

1 stop13h 42m

London Heathrow

Sun 15/11

10:45-17:39

1 stop13h 54m

£622

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 5/11

14:45-09:40

1 stop11h 55m

London Heathrow

Thu 12/11

06:35-13:49

2 stops38h 14m

£653

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 6/11

13:18-10:00

1 stop13h 42m

London Heathrow

Sun 15/11

10:45-17:39

1 stop13h 54m

£660

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

14:45-09:40

1 stop11h 55m

London Heathrow

Fri 13/11

11:35-21:38

1 stop17h 03m

£675

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 5/11

14:45-09:40

1 stop11h 55m

London Heathrow

Thu 12/11

11:35-21:38

1 stop17h 03m

£690

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 11/10

06:15-12:35

1 stop23h 20m

London Heathrow

Sun 25/10

18:00-13:49

2 stops49h 49m

£709

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 11/10

06:15-20:40

2 stops31h 25m

London Heathrow

Sun 25/10

18:00-13:49

2 stops49h 49m

£717

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 16/11

14:45-22:55

2 stops25h 10m

London Heathrow

Wed 18/11

15:00-21:38

2 stops37h 38m

£832

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 16/11

06:30-15:50

2 stops26h 20m

London Heathrow

Wed 18/11

15:00-21:38

2 stops37h 38m

£832

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	£605
Fastest flight time	25h 10m
Direct flights	None

The best flight deal from Great Falls to London found on momondo in the last 72 hours is £605

The fastest flight from Great Falls to London takes 25h 10m

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 25h 10m, 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 Heathrow Airport

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Cheap flights from Great Falls to London from £605

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 5/11. 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

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

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

United Airlines flights from Great Falls to London

Our best United Airlines 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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