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.

£594 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.

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

14h 42m1 stop Salt Lake City

17:00 - 17:47LHR London Heathrow-GTF Great Falls

31h 47m2 stops Los Angeles Los Angeles Salt Lake City

£594Multiple Airlines

Fri, 30 Oct - Fri, 6 Nov

17:15 - 12:20GTF Great Falls-LHR London Heathrow

13h 05m1 stop Seattle/Tacoma Intl

14:45 - 16:30LHR London Heathrow-GTF Great Falls

32h 45m1 stop Seattle/Tacoma Intl

£595Alaska Airlines

Fri, 30 Oct - Fri, 6 Nov

17:15 - 12:20GTF Great Falls-LHR London Heathrow

13h 05m1 stop Seattle/Tacoma Intl

14:45 - 16:30LHR London Heathrow-GTF Great Falls

32h 45m1 stop Seattle/Tacoma Intl

£604Alaska Airlines

Thu, 29 Oct - Thu, 5 Nov

13:18 - 14:25GTF Great Falls-LHR London Heathrow

19h 07m2 stops Salt Lake City Amsterdam Schiphol

17:00 - 17:47LHR London Heathrow-GTF Great Falls

31h 47m2 stops Los Angeles Los Angeles Salt Lake City

£617KLM

Fri, 30 Oct - Fri, 6 Nov

05:40 - 10:45GTF Great Falls-LHR London Heathrow

22h 05m2 stops Salt Lake City Amsterdam Schiphol

06:20 - 22:46LHR London Heathrow-GTF Great Falls

23h 26m2 stops Paris Charles de Gaulle Salt Lake City

£619Delta

Mon, 2 Nov - Mon, 9 Nov

13:18 - 16:05GTF Great Falls-LHR London Heathrow

20h 47m2 stops Salt Lake City Amsterdam Schiphol

17:05 - 17:47LHR London Heathrow-GTF Great Falls

31h 42m2 stops Amsterdam Schiphol Salt Lake City

£621KLM

Thu, 29 Oct - Thu, 5 Nov

13:18 - 10:45GTF Great Falls-LHR London Heathrow

15h 27m2 stops Salt Lake City Amsterdam Schiphol

10:45 - 17:47LHR London Heathrow-GTF Great Falls

14h 02m1 stop Salt Lake City

£626KLM

Thu, 29 Oct - Thu, 5 Nov

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

18h 10m2 stops Denver Intl Washington, D.C. Dulles Intl

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

38h 14m2 stops Munich Franz Josef Strauss Denver Intl

£651United Airlines

Sat, 31 Oct - Sat, 7 Nov

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

11h 55m1 stop Denver Intl

16:40 - 13:49LHR London Heathrow-GTF Great Falls

52h 09m2 stops Munich Franz Josef Strauss Denver Intl

£655United Airlines

Mon, 2 Nov - Mon, 9 Nov

14:37 - 09:40GTF Great Falls-LHR London Heathrow

12h 03m1 stop Denver Intl

07:30 - 21:22LHR London Heathrow-GTF Great Falls

20h 52m2 stops Frankfurt am Main Denver Intl

£657United Airlines

Thu, 15 Oct - Thu, 22 Oct

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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

31 Oct

GTF06:30Great Falls

18h 10m

2 stops

LHR06:40London Heathrow

7 Nov

LHR06:35London Heathrow

38h 14m

2 stops

GTF13:49Great Falls

£651

United Airlines

2 Nov

GTF14:45Great Falls

11h 55m

1 stop

LHR09:40London Heathrow

9 Nov

LHR16:40London Heathrow

52h 09m

2 stops

GTF13:49Great Falls

£655

United Airlines

15 Oct

GTF14:37Great Falls

12h 03m

1 stop

LHR09:40London Heathrow

22 Oct

LHR07:30London Heathrow

20h 52m

2 stops

GTF21:22Great Falls

£657

Alaska Airlines flights from Great Falls to London

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

Alaska Airlines

30 Oct

GTF17:15Great Falls

13h 05m

1 stop

LHR12:20London Heathrow

6 Nov

LHR14:45London Heathrow

32h 45m

1 stop

GTF16:30Great Falls

£595

Alaska Airlines

29 Oct

GTF17:15Great Falls

13h 05m

1 stop

LHR12:20London Heathrow

5 Nov

LHR14:45London Heathrow

32h 45m

1 stop

GTF16:30Great Falls

£604

Alaska Airlines

30 Oct

GTF17:15Great Falls

13h 05m

1 stop

LHR12:20London Heathrow

31 Oct

LHR14:45London Heathrow

32h 45m

1 stop

GTF17:30Great Falls

£933

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 30/10

13:18-10:00

1 stop14h 42m

London Heathrow

Fri 6/11

17:00-17:47

2 stops31h 47m

£594

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 30/10

17:15-12:20

1 stop13h 05m

London Heathrow

Fri 6/11

14:45-16:30

1 stop32h 45m

£595

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 29/10

17:15-12:20

1 stop13h 05m

London Heathrow

Thu 5/11

14:45-16:30

1 stop32h 45m

£604

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 30/10

13:18-14:25

2 stops19h 07m

London Heathrow

Fri 6/11

17:00-17:47

2 stops31h 47m

£617

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

05:40-10:45

2 stops22h 05m

London Heathrow

Mon 9/11

06:20-22:46

2 stops23h 26m

£619

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 29/10

13:18-16:05

2 stops20h 47m

London Heathrow

Thu 5/11

17:05-17:47

2 stops31h 42m

£621

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 29/10

13:18-10:45

2 stops15h 27m

London Heathrow

Thu 5/11

10:45-17:47

1 stop14h 02m

£626

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sat 31/10

06:30-06:40

2 stops18h 10m

London Heathrow

Sat 7/11

06:35-13:49

2 stops38h 14m

£651

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

14:45-09:40

1 stop11h 55m

London Heathrow

Mon 9/11

16:40-13:49

2 stops52h 09m

£655

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 15/10

14:37-09:40

1 stop12h 03m

London Heathrow

Thu 22/10

07:30-21:22

2 stops20h 52m

£657

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	£594
Fastest flight time	13h 45m
Direct flights	None

The best flight deal from Great Falls to London found on momondo in the last 72 hours is £594

The fastest flight from Great Falls to London takes 13h 45m

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 13h 45m, 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.

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London Heathrow Airport

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London Stansted Airport

Cheap flights from Great Falls to London from £594

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 30/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

United Airlines flights from Great Falls to London

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

Alaska Airlines flights from Great Falls to London

Our best Alaska 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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According to popular flight searches on momondo this year