What is the cheapest airline that flies from Great Falls to London?

KLM is the most popular carrier operating from Great Falls to London

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.

£364 Cheap Flights from Great Falls to London in 2025/26

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Find the cheapest flights from Great Falls to London

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13:08 - 10:00GTF-LHR

14h 52m1 stop

20:25 - 17:29LHR-GTF

28h 04m2 stops

£482KLM

Find Deal

Wed, 29 Oct - Sun, 2 Nov

13:08 - 10:30GTF-LHR

15h 22m2 stops

17:50 - 17:29LHR-GTF

30h 39m2 stops

£486KLM

Find Deal

Wed, 29 Oct - Sun, 2 Nov

13:08 - 10:00GTF-LHR

14h 52m1 stop

10:45 - 17:29LHR-GTF

13h 44m1 stop

£487KLM

Find Deal

Wed, 29 Oct - Sun, 2 Nov

14:30 - 11:15GTF-LHR

14h 45m2 stops

16:20 - 13:33LHR-GTF

28h 13m3 stops

£528United Airlines

Find Deal

Wed, 29 Oct - Sun, 2 Nov

14:30 - 09:40GTF-LHR

13h 10m1 stop

06:35 - 21:33LHR-GTF

20h 58m2 stops

£545United Airlines

Find Deal

Mon, 16 Mar - Thu, 26 Mar

16:00 - 12:20GTF-LHR

14h 20m1 stop

14:55 - 15:20LHR-GTF

30h 25m1 stop

£567Multiple Airlines

Find Deal

Mon, 16 Mar - Thu, 26 Mar

06:15 - 07:55GTF-LHR

19h 40m2 stops

07:40 - 21:33LHR-GTF

19h 53m2 stops

£570United Airlines

Find Deal

Mon, 16 Mar - Thu, 26 Mar

13:10 - 10:00GTF-LHR

14h 50m1 stop

10:55 - 22:53LHR-GTF

18h 58m1 stop

£822Delta

Find Deal

Fri, 27 Mar - Tue, 31 Mar

13:10 - 10:00GTF-LHR

14h 50m1 stop

10:55 - 17:44LHR-GTF

13h 49m1 stop

£858Delta

Find Deal

Fri, 27 Mar - Tue, 31 Mar

10:20 - 12:40GTF-LHR

44h 20m3 stops

06:00 - 09:30LHR-GTF

33h 30m3 stops

£975Multiple Airlines

Find Deal

Mon, 16 Mar - Thu, 26 Mar

KLM flights from Great Falls to London

Our best KLM deals on Great Falls to London flight tickets

KLM

29 Oct

GTF13:08Great Falls

14h 52m

1 stop

LHR10:00London Heathrow

2 Nov

LHR20:25London Heathrow

28h 04m

2 stops

GTF17:29Great Falls

£482

Find similar

KLM

29 Oct

GTF13:08Great Falls

15h 22m

2 stops

LHR10:30London Heathrow

2 Nov

LHR17:50London Heathrow

30h 39m

2 stops

GTF17:29Great Falls

£486

Find similar

KLM

29 Oct

GTF13:08Great Falls

14h 52m

1 stop

LHR10:00London Heathrow

2 Nov

LHR10:45London Heathrow

13h 44m

1 stop

GTF17:29Great Falls

£487

Find similar

United Airlines flights from Great Falls to London

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

United Airlines

29 Oct

GTF14:30Great Falls

14h 45m

2 stops

LHR11:15London Heathrow

2 Nov

LHR16:20London Heathrow

28h 13m

3 stops

GTF13:33Great Falls

£528

Find similar

United Airlines

16 Mar

GTF14:30Great Falls

13h 10m

1 stop

LHR09:40London Heathrow

26 Mar

LHR06:35London Heathrow

20h 58m

2 stops

GTF21:33Great Falls

£545

Find similar

United Airlines

16 Mar

GTF06:15Great Falls

19h 40m

2 stops

LHR07:55London Heathrow

26 Mar

LHR07:40London Heathrow

19h 53m

2 stops

GTF21:33Great Falls

£570

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

13:08-10:00

1 stop14h 52m

London Heathrow

Sun 2/11

20:25-17:29

2 stops28h 04m

£482

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

13:08-10:30

2 stops15h 22m

London Heathrow

Sun 2/11

17:50-17:29

2 stops30h 39m

£486

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

13:08-10:00

1 stop14h 52m

London Heathrow

Sun 2/11

10:45-17:29

1 stop13h 44m

£487

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

14:30-11:15

2 stops14h 45m

London Heathrow

Sun 2/11

16:20-13:33

3 stops28h 13m

£528

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

14:30-09:40

1 stop13h 10m

London Heathrow

Thu 26/3

06:35-21:33

2 stops20h 58m

£545

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

16:00-12:20

1 stop14h 20m

London Heathrow

Thu 26/3

14:55-15:20

1 stop30h 25m

£567

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

06:15-07:55

2 stops19h 40m

London Heathrow

Thu 26/3

07:40-21:33

2 stops19h 53m

£570

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 27/3

13:10-10:00

1 stop14h 50m

London Heathrow

Tue 31/3

10:55-22:53

1 stop18h 58m

£822

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 27/3

13:10-10:00

1 stop14h 50m

London Heathrow

Tue 31/3

10:55-17:44

1 stop13h 49m

£858

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

10:20-12:40

3 stops44h 20m

London Heathrow

Thu 26/3

06:00-09:30

3 stops33h 30m

£974

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted 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

Prices

Airlines

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

Direct flights	None

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

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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

Maidstone

Gatwick

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Dover

Hayes

Chelmsford

Worthing

Dartford

Bedford

Ramsgate

Stansted

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.