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

United Airlines 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.

£295 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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One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

05:30 - 06:50GTF-LHR

18h 20m2 stops

10:45 - 17:28LHR-GTF

13h 43m1 stop

£486Multiple Airlines

Find Deal

dom, 7 dez - dom, 14 dez

18:15 - 10:00GTF-LHR

32h 45m1 stop

06:20 - 17:44LHR-GTF

17h 24m2 stops

£491Delta

Find Deal

dom, 1 mar - qua, 11 mar

05:30 - 09:00GTF-LHR

20h 30m3 stops

06:20 - 17:44LHR-GTF

17h 24m2 stops

£494Delta

Find Deal

ter, 3 mar - qua, 11 mar

13:10 - 06:50GTF-LHR

34h 40m2 stops

06:20 - 17:44LHR-GTF

17h 24m2 stops

£498Delta

Find Deal

sáb, 28 fev - ter, 17 mar

13:12 - 10:00GTF-LHR

13h 48m1 stop

17:50 - 17:28LHR-GTF

30h 38m2 stops

£499KLM

Find Deal

sáb, 29 nov - sáb, 6 dez

18:15 - 10:00GTF-LHR

32h 45m1 stop

17:35 - 17:44LHR-GTF

30h 09m2 stops

£500Delta

Find Deal

dom, 1 mar - seg, 16 mar

19:35 - 06:35GTF-LHR

28h 00m2 stops

16:30 - 18:55LHR-GTF

33h 25m2 stops

£509Multiple Airlines

Find Deal

dom, 7 dez - dom, 14 dez

13:12 - 10:00GTF-LHR

13h 48m1 stop

10:45 - 17:28LHR-GTF

13h 43m1 stop

£520KLM

Find Deal

sáb, 29 nov - sáb, 6 dez

14:25 - 09:40GTF-LHR

12h 15m1 stop

11:25 - 21:15LHR-GTF

16h 50m1 stop

£575United Airlines

Find Deal

seg, 30 mar - qua, 15 abr

07:00 - 09:40GTF-LHR

19h 40m1 stop

11:25 - 13:29LHR-GTF

33h 04m1 stop

£576United Airlines

Find Deal

dom, 29 mar - ter, 14 abr

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

Delta

1 Mar

GTF18:15Great Falls

32h 45m

1 stop

LHR10:00London Heathrow

11 Mar

LHR06:20London Heathrow

17h 24m

2 stops

GTF17:44Great Falls

£491

Find similar

Delta

3 Mar

GTF05:30Great Falls

20h 30m

3 stops

LHR09:00London Heathrow

11 Mar

LHR06:20London Heathrow

17h 24m

2 stops

GTF17:44Great Falls

£494

Find similar

Delta

28 Feb

GTF13:10Great Falls

34h 40m

2 stops

LHR06:50London Heathrow

17 Mar

LHR06:20London Heathrow

17h 24m

2 stops

GTF17:44Great Falls

£498

Find similar

United Airlines flights from Great Falls to London

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

United Airlines

30 Mar

GTF14:25Great Falls

12h 15m

1 stop

LHR09:40London Heathrow

15 Apr

LHR11:25London Heathrow

16h 50m

1 stop

GTF21:15Great Falls

£575

Find similar

United Airlines

29 Mar

GTF07:00Great Falls

19h 40m

1 stop

LHR09:40London Heathrow

14 Apr

LHR11:25London Heathrow

33h 04m

1 stop

GTF13:29Great Falls

£576

Find similar

United Airlines

26 Feb

GTF07:00Great Falls

19h 40m

1 stop

LHR09:40London Heathrow

14 Mar

LHR11:35London Heathrow

15h 58m

1 stop

GTF21:33Great Falls

£581

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dom 7/12

05:30-06:50

2 stops18h 20m

London Heathrow

dom 14/12

10:45-17:28

1 stop13h 43m

£486

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dom 1/3

18:15-10:00

1 stop32h 45m

London Heathrow

qua 11/3

06:20-17:44

2 stops17h 24m

£491

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

ter 3/3

05:30-09:00

3 stops20h 30m

London Heathrow

qua 11/3

06:20-17:44

2 stops17h 24m

£494

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

sáb 28/2

13:10-06:50

2 stops34h 40m

London Heathrow

ter 17/3

06:20-17:44

2 stops17h 24m

£498

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

sáb 29/11

13:12-10:00

1 stop13h 48m

London Heathrow

sáb 6/12

17:50-17:28

2 stops30h 38m

£499

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dom 1/3

18:15-10:00

1 stop32h 45m

London Heathrow

seg 16/3

17:35-17:44

2 stops30h 09m

£500

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dom 7/12

19:35-06:35

2 stops28h 00m

London Heathrow

dom 14/12

16:30-18:55

2 stops33h 25m

£509

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

sáb 29/11

13:12-10:00

1 stop13h 48m

London Heathrow

sáb 6/12

10:45-17:28

1 stop13h 43m

£520

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

seg 30/3

14:25-09:40

1 stop12h 15m

London Heathrow

qua 15/4

11:25-21:15

1 stop16h 50m

£575

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

dom 29/3

07:00-09:40

1 stop19h 40m

London Heathrow

ter 14/4

11:25-13:29

1 stop33h 04m

£576

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 15m, 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

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Luton

Gatwick

Maidstone

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.