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.

£249 Cheap Flights from Great Falls to London in 2026

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Find the cheapest flights from Great Falls to London

Round-trip

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Enter your travel dates to find the best prices.

06:15 - 10:25

GTF

LHR

21h 10m

2 stops

06:35 - 22:30

LHR

GTF

22h 55m

2 stops

£563United Airlines

Wed, 11 Nov - Fri, 13 Nov

14:25 - 09:40

GTF

LHR

12h 15m

1 stop

06:35 - 22:30

LHR

GTF

22h 55m

2 stops

£621United Airlines

Wed, 11 Nov - Fri, 13 Nov

16:57 - 12:20

GTF

LHR

12h 23m

1 stop

14:45 - 16:17

LHR

GTF

32h 32m

1 stop

£663Alaska Airlines

Wed, 11 Nov - Fri, 13 Nov

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

14:50 - 21:12

LHR

GTF

13h 22m

1 stop

£676United Airlines

Mon, 14 Sep - Fri, 18 Sep

06:15 - 06:55

GTF

LHR

17h 40m

2 stops

11:05 - 21:12

LHR

GTF

17h 07m

2 stops

£680United Airlines

Mon, 14 Sep - Fri, 18 Sep

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

07:25 - 13:29

LHR

GTF

37h 04m

2 stops

£792United Airlines

Wed, 12 Aug - Sun, 16 Aug

06:15 - 10:00

GTF

LHR

20h 45m

2 stops

09:00 - 13:29

LHR

GTF

35h 29m

2 stops

£795United Airlines

Wed, 12 Aug - Sun, 16 Aug

14:25 - 09:40

GTF

LHR

12h 15m

1 stop

11:25 - 21:12

LHR

GTF

16h 47m

1 stop

£812SWISS

Wed, 12 Aug - Sun, 16 Aug

06:15 - 10:00

GTF

LHR

20h 45m

2 stops

09:30 - 11:46

LHR

GTF

33h 16m

2 stops

£854United Airlines

Wed, 1 Jul - Tue, 7 Jul

06:15 - 10:00

GTF

LHR

20h 45m

2 stops

14:10 - 11:46

LHR

GTF

28h 36m

1 stop

£869United Airlines

Wed, 1 Jul - Tue, 7 Jul

United Airlines flights from Great Falls to London

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

United Airlines

11 Nov

GTF06:15Great Falls

21h 10m

2 stops

LHR10:25London Heathrow

13 Nov

LHR06:35London Heathrow

22h 55m

2 stops

GTF22:30Great Falls

£563

United Airlines

11 Nov

GTF14:25Great Falls

12h 15m

1 stop

LHR09:40London Heathrow

13 Nov

LHR06:35London Heathrow

22h 55m

2 stops

GTF22:30Great Falls

£621

United Airlines

14 Sept

GTF06:15Great Falls

20h 25m

1 stop

LHR09:40London Heathrow

18 Sept

LHR14:50London Heathrow

13h 22m

1 stop

GTF21:12Great Falls

£676

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/11

06:15-10:25

2 stops21h 10m

London Heathrow

Fri 13/11

06:35-22:30

2 stops22h 55m

£563

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/11

14:25-09:40

1 stop12h 15m

London Heathrow

Fri 13/11

06:35-22:30

2 stops22h 55m

£621

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/11

16:57-12:20

1 stop12h 23m

London Heathrow

Fri 13/11

14:45-16:17

1 stop32h 32m

£663

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 14/9

06:15-09:40

1 stop20h 25m

London Heathrow

Fri 18/9

14:50-21:12

1 stop13h 22m

£676

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 14/9

06:15-06:55

2 stops17h 40m

London Heathrow

Fri 18/9

11:05-21:12

2 stops17h 07m

£680

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 12/8

06:15-09:40

1 stop20h 25m

London Heathrow

Sun 16/8

07:25-13:29

2 stops37h 04m

£792

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 12/8

06:15-10:00

2 stops20h 45m

London Heathrow

Sun 16/8

09:00-13:29

2 stops35h 29m

£795

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 12/8

14:25-09:40

1 stop12h 15m

London Heathrow

Sun 16/8

11:25-21:12

1 stop16h 47m

£812

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 1/7

06:15-10:00

2 stops20h 45m

London Heathrow

Tue 7/7

09:30-11:46

2 stops33h 16m

£854

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 1/7

06:15-10:00

2 stops20h 45m

London Heathrow

Tue 7/7

14:10-11:46

1 stop28h 36m

£869

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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

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

Delta and United Airlines are the most popular carriers operating from Great Falls to London

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	20h 25m
Direct flights	None

The fastest flight from Great Falls to London takes 20h 25m

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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Frequently asked questions about flying from Great Falls to London

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 20h 25m, 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

Gatwick

Luton

Wembley

Slough

Maidstone

Southend-on-Sea

Ipswich

Ilford

Canterbury

Guildford

Hayes

Folkestone

Chelmsford

Dover

Bedford

Chichester

Harlow

Colchester

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.

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Cheap flights from Great Falls to London from £249

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to London departing on 13/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Filter for what you want

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United Airlines flights from Great Falls to London

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How to get the cheapest flight ticket from Great Falls to London

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

When to book flights from Great Falls to London

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

Direct flights

Frequently asked questions about flying from Great Falls to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

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