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.

£673 Cheap Flights from Great Falls to London in 2026

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Find the cheapest flights from Great Falls to London

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14:25 - 12:25

GTF

LHR

15h 00m

1 stop

11:25 - 21:15

LHR

GTF

16h 50m

1 stop

£673United Airlines

Tue, 29 Sep - Tue, 6 Oct

14:25 - 09:40

GTF

LHR

12h 15m

1 stop

10:00 - 21:15

LHR

GTF

18h 15m

2 stops

£676United Airlines

Tue, 29 Sep - Tue, 6 Oct

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

09:30 - 21:28

LHR

GTF

42h 58m

2 stops

£695United Airlines

Tue, 1 Sep - Sun, 6 Sep

06:15 - 06:30

GTF

LHR

17h 15m

2 stops

09:30 - 21:28

LHR

GTF

42h 58m

2 stops

£697United Airlines

Tue, 1 Sep - Sun, 6 Sep

14:31 - 09:40

GTF

LHR

12h 09m

1 stop

14:50 - 21:28

LHR

GTF

13h 38m

1 stop

£710United Airlines

Tue, 1 Sep - Sun, 6 Sep

12:30 - 06:45

GTF

LHR

35h 15m

1 stop

14:50 - 21:28

LHR

GTF

13h 38m

1 stop

£762Lufthansa

Sat, 1 Aug - Thu, 13 Aug

14:37 - 07:45

GTF

LHR

34h 08m

2 stops

14:50 - 21:28

LHR

GTF

13h 38m

1 stop

£771Multiple Airlines

Sat, 1 Aug - Thu, 13 Aug

14:35 - 09:40

GTF

LHR

12h 05m

1 stop

07:25 - 21:18

LHR

GTF

20h 53m

2 stops

£796United Airlines

Tue, 5 May - Tue, 19 May

14:30 - 09:40

GTF

LHR

12h 10m

1 stop

07:30 - 21:18

LHR

GTF

20h 48m

2 stops

£805United Airlines

Tue, 28 Apr - Tue, 12 May

07:00 - 05:55

GTF

LHR

15h 55m

2 stops

10:00 - 21:15

LHR

GTF

18h 15m

2 stops

£805United Airlines

Tue, 29 Sep - Tue, 6 Oct

United Airlines flights from Great Falls to London

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

United Airlines

29 Sept

GTF14:25Great Falls

15h 00m

1 stop

LHR12:25London Heathrow

6 Oct

LHR11:25London Heathrow

16h 50m

1 stop

GTF21:15Great Falls

£673

United Airlines

29 Sept

GTF14:25Great Falls

12h 15m

1 stop

LHR09:40London Heathrow

6 Oct

LHR10:00London Heathrow

18h 15m

2 stops

GTF21:15Great Falls

£676

United Airlines

1 Sept

GTF06:15Great Falls

20h 25m

1 stop

LHR09:40London Heathrow

6 Sept

LHR09:30London Heathrow

42h 58m

2 stops

GTF21:28Great Falls

£695

KLM flights from Great Falls to London

Our best KLM deals on Great Falls to London flight tickets

KLM

27 Apr

GTF13:09Great Falls

13h 51m

1 stop

LHR10:00London Heathrow

9 May

LHR06:30London Heathrow

22h 56m

2 stops

GTF22:26Great Falls

£851

KLM

28 Apr

GTF13:09Great Falls

14h 51m

1 stop

LHR11:00London Heathrow

17 May

LHR06:30London Heathrow

18h 09m

2 stops

GTF17:39Great Falls

£851

KLM

26 Apr

GTF18:20Great Falls

32h 40m

1 stop

LHR10:00London Heathrow

9 May

LHR06:30London Heathrow

18h 09m

2 stops

GTF17:39Great Falls

£852

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 29/9

14:25-12:25

1 stop15h 00m

London Heathrow

Tue 6/10

11:25-21:15

1 stop16h 50m

£673

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 29/9

14:25-09:40

1 stop12h 15m

London Heathrow

Tue 6/10

10:00-21:15

2 stops18h 15m

£676

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 1/9

06:15-09:40

1 stop20h 25m

London Heathrow

Sun 6/9

09:30-21:28

2 stops42h 58m

£695

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 1/9

06:15-06:30

2 stops17h 15m

London Heathrow

Sun 6/9

09:30-21:28

2 stops42h 58m

£697

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 1/9

14:31-09:40

1 stop12h 09m

London Heathrow

Sun 6/9

14:50-21:28

1 stop13h 38m

£710

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 1/8

12:30-06:45

1 stop35h 15m

London Heathrow

Thu 13/8

14:50-21:28

1 stop13h 38m

£762

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 1/8

14:37-07:45

2 stops34h 08m

London Heathrow

Thu 13/8

14:50-21:28

1 stop13h 38m

£771

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 5/5

14:35-09:40

1 stop12h 05m

London Heathrow

Tue 19/5

07:25-21:18

2 stops20h 53m

£796

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 28/4

14:30-09:40

1 stop12h 10m

London Heathrow

Tue 12/5

07:30-21:18

2 stops20h 48m

£805

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 29/9

07:00-05:55

2 stops15h 55m

London Heathrow

Tue 6/10

10:00-21:15

2 stops18h 15m

£805

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Great Falls 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

Can stopping save me money on Great Falls to London flights?

You could potentially save up to 1% on your flight if you consider stops on a Great Falls to London flight.

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

Fastest flight time	12h 05m
Direct flights	None

The fastest flight from Great Falls to London takes 12h 05m

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 12h 05m, 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.

Eastbourne

Milton Keynes

Luton

Gatwick

Slough

Maidstone

Wembley

Southend-on-Sea

Ipswich

Canterbury

Ilford

Guildford

Hayes

Dover

Chelmsford

Folkestone

Bedford

Ramsgate

Chichester

Harlow

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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Cheap flights from Great Falls to London from £673

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 29/9. 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, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

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Find the cheapest flights from Great Falls to London

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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

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

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How to get the cheapest flight ticket from Great Falls to London

Can stopping save me money on Great Falls to London flights?

When to book flights from Great Falls to London

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

Fastest flight time

Direct flights

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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