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.

£476 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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06:25 - 09:40

GTF

LHR

20h 15m1 stop

07:30 - 21:33

LHR

GTF

21h 03m2 stops

£476United Airlines

Thu, 19 Feb - Mon, 23 Feb

06:25 - 09:40

GTF

LHR

20h 15m1 stop

11:35 - 21:33

LHR

GTF

16h 58m1 stop

£489United Airlines

Thu, 19 Feb - Mon, 23 Feb

14:25 - 09:40

GTF

LHR

12h 15m1 stop

15:30 - 21:33

LHR

GTF

37h 03m2 stops

£491United Airlines

Thu, 19 Feb - Mon, 23 Feb

06:25 - 06:40

GTF

LHR

17h 15m2 stops

07:30 - 21:33

LHR

GTF

21h 03m2 stops

£544United Airlines

Thu, 19 Feb - Mon, 23 Feb

06:25 - 10:50

GTF

LHR

21h 25m2 stops

07:55 - 21:33

LHR

GTF

20h 38m2 stops

£557United Airlines

Thu, 19 Feb - Mon, 23 Feb

18:52 - 06:50

GTF

LHR

28h 58m1 stop

16:25 - 18:12

LHR

GTF

32h 47m2 stops

£615Multiple Airlines

Mon, 18 May - Thu, 28 May

18:52 - 06:50

GTF

LHR

28h 58m2 stops

16:25 - 18:12

LHR

GTF

32h 47m2 stops

£618Multiple Airlines

Mon, 18 May - Wed, 27 May

18:52 - 06:50

GTF

LHR

28h 58m1 stop

09:50 - 18:12

LHR

GTF

15h 22m1 stop

£628Multiple Airlines

Mon, 18 May - Wed, 27 May

United Airlines flights from Great Falls to London

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

United Airlines

19 Feb

GTF06:25Great Falls

20h 15m

1 stop

LHR09:40London Heathrow

23 Feb

LHR07:30London Heathrow

21h 03m

2 stops

GTF21:33Great Falls

£476

Find similar

United Airlines

19 Feb

GTF14:25Great Falls

12h 15m

1 stop

LHR09:40London Heathrow

23 Feb

LHR11:10London Heathrow

41h 23m

2 stops

GTF21:33Great Falls

£476

Find similar

United Airlines

19 Feb

GTF06:25Great Falls

20h 15m

1 stop

LHR09:40London Heathrow

23 Feb

LHR11:35London Heathrow

16h 58m

1 stop

GTF21:33Great Falls

£489

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 19/2

06:25-09:40

1 stop20h 15m

London Heathrow

Mon 23/2

07:30-21:33

2 stops21h 03m

£476

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 19/2

06:25-09:40

1 stop20h 15m

London Heathrow

Mon 23/2

11:35-21:33

1 stop16h 58m

£489

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 19/2

14:25-09:40

1 stop12h 15m

London Heathrow

Mon 23/2

15:30-21:33

2 stops37h 03m

£491

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 19/2

06:25-06:40

2 stops17h 15m

London Heathrow

Mon 23/2

07:30-21:33

2 stops21h 03m

£544

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 19/2

06:25-10:50

2 stops21h 25m

London Heathrow

Mon 23/2

07:55-21:33

2 stops20h 38m

£557

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 18/5

18:52-06:50

1 stop28h 58m

London Heathrow

Thu 28/5

16:25-18:12

2 stops32h 47m

£615

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 18/5

18:52-06:50

2 stops28h 58m

London Heathrow

Wed 27/5

16:25-18:12

2 stops32h 47m

£618

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 18/5

18:52-06:50

1 stop28h 58m

London Heathrow

Wed 27/5

09:50-18:12

1 stop15h 22m

£628

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.

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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

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Bedford

Colchester

Hounslow

Ramsgate

Romford

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.