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.

£471 Cheap Flights from Great Falls to London in 2025/26

1 adult

0 bags

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Find the cheapest flights from Great Falls to London

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14:29 - 09:40

GTF

LHR

12h 11m1 stop

06:35 - 21:53

LHR

GTF

22h 18m2 stops

£471United Airlines

Thu, 22 Jan - Thu, 29 Jan

14:29 - 07:10

GTF

LHR

33h 41m2 stops

06:35 - 21:53

LHR

GTF

22h 18m2 stops

£473United Airlines

Thu, 22 Jan - Thu, 29 Jan

06:10 - 09:40

GTF

LHR

20h 30m1 stop

13:50 - 21:53

LHR

GTF

39h 03m2 stops

£478United Airlines

Thu, 8 Jan - Mon, 12 Jan

14:29 - 09:40

GTF

LHR

12h 11m1 stop

11:10 - 21:53

LHR

GTF

41h 43m2 stops

£480United Airlines

Thu, 8 Jan - Mon, 12 Jan

14:29 - 07:10

GTF

LHR

33h 41m2 stops

13:50 - 21:53

LHR

GTF

39h 03m2 stops

£481United Airlines

Thu, 8 Jan - Mon, 12 Jan

14:29 - 07:10

GTF

LHR

33h 41m2 stops

11:10 - 21:53

LHR

GTF

41h 43m2 stops

£482United Airlines

Thu, 8 Jan - Mon, 12 Jan

14:29 - 09:40

GTF

LHR

12h 11m1 stop

11:35 - 21:53

LHR

GTF

17h 18m1 stop

£491United Airlines

Thu, 8 Jan - Mon, 12 Jan

06:10 - 09:40

GTF

LHR

20h 30m1 stop

11:35 - 13:48

LHR

GTF

33h 13m1 stop

£492United Airlines

Thu, 8 Jan - Mon, 12 Jan

13:10 - 10:00

GTF

LHR

13h 50m1 stop

10:45 - 12:24

LHR

GTF

31h 39m1 stop

£556Delta

Fri, 27 Feb - Thu, 26 Mar

13:10 - 10:00

GTF

LHR

13h 50m1 stop

20:00 - 17:39

LHR

GTF

27h 39m2 stops

£559KLM

Fri, 27 Feb - Thu, 26 Mar

United Airlines flights from Great Falls to London

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

United Airlines

22 Jan

GTF14:29Great Falls

12h 11m

1 stop

LHR09:40London Heathrow

29 Jan

LHR06:35London Heathrow

22h 18m

2 stops

GTF21:53Great Falls

£471

Find similar

United Airlines

22 Jan

GTF14:29Great Falls

33h 41m

2 stops

LHR07:10London Heathrow

29 Jan

LHR06:35London Heathrow

22h 18m

2 stops

GTF21:53Great Falls

£473

Find similar

United Airlines

8 Jan

GTF06:10Great Falls

20h 30m

1 stop

LHR09:40London Heathrow

12 Jan

LHR13:50London Heathrow

39h 03m

2 stops

GTF21:53Great Falls

£478

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 22/1

14:29-09:40

1 stop12h 11m

London Heathrow

Thu 29/1

06:35-21:53

2 stops22h 18m

£471

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 22/1

14:29-07:10

2 stops33h 41m

London Heathrow

Thu 29/1

06:35-21:53

2 stops22h 18m

£473

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 8/1

06:10-09:40

1 stop20h 30m

London Heathrow

Mon 12/1

13:50-21:53

2 stops39h 03m

£478

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 8/1

14:29-09:40

1 stop12h 11m

London Heathrow

Mon 12/1

11:10-21:53

2 stops41h 43m

£480

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 8/1

14:29-07:10

2 stops33h 41m

London Heathrow

Mon 12/1

13:50-21:53

2 stops39h 03m

£481

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 8/1

14:29-07:10

2 stops33h 41m

London Heathrow

Mon 12/1

11:10-21:53

2 stops41h 43m

£482

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 8/1

14:29-09:40

1 stop12h 11m

London Heathrow

Mon 12/1

11:35-21:53

1 stop17h 18m

£491

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 8/1

06:10-09:40

1 stop20h 30m

London Heathrow

Mon 12/1

11:35-13:48

1 stop33h 13m

£492

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 27/2

13:10-10:00

1 stop13h 50m

London Heathrow

Thu 26/3

10:45-12:24

1 stop31h 39m

£556

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 27/2

13:10-10:00

1 stop13h 50m

London Heathrow

Thu 26/3

20:00-17:39

2 stops27h 39m

£559

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 11m
Direct flights	None

The fastest flight from Great Falls to London takes 12h 11m

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 11m, 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

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Colchester

Bedford

Ramsgate

Hounslow

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.