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

United Airlines and Delta are the most popular carriers 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.

£219 Cheap Flights from Great Falls to London in 2025

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Great Falls to London

Round-trip

One-way

Cheap return flights

05:40 - 09:50GTF-LHR

21h 10m1 stop

06:15 - 17:29LHR-GTF

18h 14m2 stops

£466Delta

Find Deal

Mon, 29 Sep - Wed, 8 Oct

05:40 - 09:50GTF-LHR

21h 10m1 stop

06:15 - 17:29LHR-GTF

18h 14m2 stops

£467Delta

Find Deal

Mon, 29 Sep - Wed, 8 Oct

05:40 - 11:25GTF-LHR

22h 45m2 stops

06:15 - 17:29LHR-GTF

18h 14m2 stops

£470Delta

Find Deal

Mon, 29 Sep - Wed, 8 Oct

13:05 - 09:50GTF-LHR

13h 45m1 stop

11:00 - 23:06LHR-GTF

19h 06m1 stop

£472KLM

Find Deal

Mon, 29 Sep - Wed, 8 Oct

13:08 - 10:00GTF-LHR

13h 52m1 stop

10:45 - 17:42LHR-GTF

13h 57m1 stop

£473Delta

Find Deal

Tue, 4 Nov - Wed, 26 Nov

13:05 - 14:15GTF-LHR

18h 10m2 stops

11:00 - 23:06LHR-GTF

19h 06m1 stop

£476KLM

Find Deal

Tue, 30 Sep - Wed, 8 Oct

13:08 - 17:00GTF-LHR

20h 52m2 stops

10:45 - 17:42LHR-GTF

13h 57m1 stop

£533

Find Deal

Sat, 8 Nov - Thu, 27 Nov

06:20 - 09:40GTF-LHR

20h 20m1 stop

11:10 - 13:33LHR-GTF

33h 23m2 stops

£542United Airlines

Find Deal

Tue, 4 Nov - Wed, 26 Nov

14:30 - 20:35GTF-LHR

23h 05m2 stops

11:10 - 13:33LHR-GTF

33h 23m2 stops

£545United Airlines

Find Deal

Tue, 4 Nov - Wed, 26 Nov

13:08 - 17:00GTF-LHR

20h 52m2 stops

06:20 - 17:42LHR-GTF

18h 22m2 stops

£627

Find Deal

Thu, 6 Nov - Fri, 28 Nov

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

Delta

29 Sept

GTF05:40Great Falls

21h 10m

1 stop

LHR09:50London Heathrow

8 Oct

LHR06:15London Heathrow

18h 14m

2 stops

GTF17:29Great Falls

£466

Find similar

Delta

29 Sept

GTF05:40Great Falls

21h 10m

1 stop

LHR09:50London Heathrow

8 Oct

LHR06:15London Heathrow

18h 14m

2 stops

GTF17:29Great Falls

£467

Find similar

Delta

29 Sept

GTF05:40Great Falls

22h 45m

2 stops

LHR11:25London Heathrow

8 Oct

LHR06:15London Heathrow

18h 14m

2 stops

GTF17:29Great Falls

£470

Find similar

KLM flights from Great Falls to London

Our best KLM deals on Great Falls to London flight tickets

KLM

29 Sept

GTF13:05Great Falls

13h 45m

1 stop

LHR09:50London Heathrow

8 Oct

LHR11:00London Heathrow

19h 06m

1 stop

GTF23:06Great Falls

£472

Find similar

KLM

30 Sept

GTF13:05Great Falls

18h 10m

2 stops

LHR14:15London Heathrow

8 Oct

LHR11:00London Heathrow

19h 06m

1 stop

GTF23:06Great Falls

£476

Find similar

KLM

30 Sept

GTF13:05Great Falls

13h 45m

1 stop

LHR09:50London Heathrow

8 Oct

LHR11:00London Heathrow

13h 29m

1 stop

GTF17:29Great Falls

£544

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

05:40-09:50

1 stop21h 10m

London Heathrow

Wed 8/10

06:15-17:29

2 stops18h 14m

£466

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

05:40-09:50

1 stop21h 10m

London Heathrow

Wed 8/10

06:15-17:29

2 stops18h 14m

£467

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

05:40-11:25

2 stops22h 45m

London Heathrow

Wed 8/10

06:15-17:29

2 stops18h 14m

£470

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

13:05-09:50

1 stop13h 45m

London Heathrow

Wed 8/10

11:00-23:06

1 stop19h 06m

£472

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 4/11

13:08-10:00

1 stop13h 52m

London Heathrow

Wed 26/11

10:45-17:42

1 stop13h 57m

£473

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 30/9

13:05-14:15

2 stops18h 10m

London Heathrow

Wed 8/10

11:00-23:06

1 stop19h 06m

£476

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 8/11

13:08-17:00

2 stops20h 52m

London Heathrow

Thu 27/11

10:45-17:42

1 stop13h 57m

£533

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 4/11

06:20-09:40

1 stop20h 20m

London Heathrow

Wed 26/11

11:10-13:33

2 stops33h 23m

£542

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 4/11

14:30-20:35

2 stops23h 05m

London Heathrow

Wed 26/11

11:10-13:33

2 stops33h 23m

£545

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 6/11

13:08-17:00

2 stops20h 52m

London Heathrow

Fri 28/11

06:20-17:42

2 stops18h 22m

£627

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 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.

Search flight deals

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 10m, 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

Slough

Gatwick

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Worthing

Dartford

Hounslow

Dover

Chelmsford

Hayes

Folkestone

Bedford

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.