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.

£375 Cheap Flights from Great Falls to London in 2026

Find the cheapest flights from Great Falls to London

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One-way

Cheap return flights

Enter your travel dates to find the best prices.

13:18 - 10:00GTF Great Falls-LHR London Heathrow

13h 42m1 stop Salt Lake City

20:25 - 17:41LHR London Heathrow-GTF Great Falls

28h 16m2 stops Amsterdam Schiphol Salt Lake City

£665Multiple Airlines

Mon, 2 Nov - Mon, 16 Nov

06:30 - 07:10GTF Great Falls-LHR London Heathrow

17h 40m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

06:35 - 21:38LHR London Heathrow-GTF Great Falls

22h 03m2 stops Munich Franz Josef Strauss Denver Intl

£667United Airlines

Tue, 3 Nov - Tue, 17 Nov

13:18 - 13:45GTF Great Falls-LHR London Heathrow

17h 27m2 stops Salt Lake City Paris Charles de Gaulle

20:25 - 17:41LHR London Heathrow-GTF Great Falls

28h 16m2 stops Amsterdam Schiphol Salt Lake City

£668Multiple Airlines

Mon, 2 Nov - Mon, 16 Nov

14:45 - 09:40GTF Great Falls-LHR London Heathrow

11h 55m1 stop Denver Intl

16:40 - 13:49LHR London Heathrow-GTF Great Falls

52h 09m2 stops Munich Franz Josef Strauss Denver Intl

£673United Airlines

Mon, 2 Nov - Mon, 16 Nov

14:45 - 07:10GTF Great Falls-LHR London Heathrow

33h 25m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

16:40 - 21:38LHR London Heathrow-GTF Great Falls

35h 58m2 stops Munich Franz Josef Strauss Denver Intl

£675United Airlines

Mon, 2 Nov - Mon, 16 Nov

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£685Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£686Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

13:15 - 15:35GTF Great Falls-LHR London Heathrow

19h 20m2 stops Salt Lake City Seattle/Tacoma Intl

06:30 - 17:41LHR London Heathrow-GTF Great Falls

18h 11m2 stops Amsterdam Schiphol Salt Lake City

£690KLM

Tue, 15 Sep - Wed, 30 Sep

06:15 - 09:40GTF Great Falls-LHR London Heathrow

20h 25m1 stop Denver Intl

09:30 - 21:22LHR London Heathrow-GTF Great Falls

42h 52m2 stops Montreal Pierre Elliott Trudeau Intl Denver Intl

£695United Airlines

Tue, 15 Sep - Wed, 30 Sep

06:15 - 07:45GTF Great Falls-LHR London Heathrow

18h 30m2 stops Denver Intl Houston George Bush Intcntl

14:05 - 21:12LHR London Heathrow-GTF Great Falls

38h 07m2 stops Montreal Pierre Elliott Trudeau Intl Denver Intl

£698United Airlines

Wed, 16 Sep - Tue, 22 Sep

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United Airlines flights from Great Falls to London

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

United Airlines

3 Nov

GTF06:30Great Falls

17h 40m

2 stops

LHR07:10London Heathrow

17 Nov

LHR06:35London Heathrow

22h 03m

2 stops

GTF21:38Great Falls

£667

United Airlines

2 Nov

GTF14:45Great Falls

11h 55m

1 stop

LHR09:40London Heathrow

16 Nov

LHR16:40London Heathrow

52h 09m

2 stops

GTF13:49Great Falls

£673

United Airlines

2 Nov

GTF14:45Great Falls

33h 25m

2 stops

LHR07:10London Heathrow

16 Nov

LHR16:40London Heathrow

35h 58m

2 stops

GTF21:38Great Falls

£675

Alaska Airlines flights from Great Falls to London

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

Alaska Airlines

10 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£685

Alaska Airlines

10 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£686

Alaska Airlines

2 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

16 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£715

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

13:18-10:00

1 stop13h 42m

London Heathrow

Mon 16/11

20:25-17:41

2 stops28h 16m

£665

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

06:30-07:10

2 stops17h 40m

London Heathrow

Tue 17/11

06:35-21:38

2 stops22h 03m

£667

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

13:18-13:45

2 stops17h 27m

London Heathrow

Mon 16/11

20:25-17:41

2 stops28h 16m

£668

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

14:45-09:40

1 stop11h 55m

London Heathrow

Mon 16/11

16:40-13:49

2 stops52h 09m

£673

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

14:45-07:10

2 stops33h 25m

London Heathrow

Mon 16/11

16:40-21:38

2 stops35h 58m

£675

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£685

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£686

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 15/9

13:15-15:35

2 stops19h 20m

London Heathrow

Wed 30/9

06:30-17:41

2 stops18h 11m

£690

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 15/9

06:15-09:40

1 stop20h 25m

London Heathrow

Wed 30/9

09:30-21:22

2 stops42h 52m

£695

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 16/9

06:15-07:45

2 stops18h 30m

London Heathrow

Tue 22/9

14:05-21:12

2 stops38h 07m

£698

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 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?

United Airlines is the most popular carrier 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

Best price found	£375
Fastest flight time	11h 55m
Direct flights	None

The best one-way flight to London from Great Falls in the past 72 hours is £375. The best return flight deal from Great Falls to London found on momondo in the last 72 hours is £665.

The fastest flight from Great Falls to London takes 11h 55m

There are no direct flights from Great Falls to London. There are no popular flight routes from Great Falls to London.

Search flight deals

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 11h 55m, 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

Wembley

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Milton Keynes

Luton

Southend-on-Sea

Slough

Ipswich

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Chichester

Hayes

Guildford

Bedford

Harlow

Colchester

Chelmsford

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 £375

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 1/10. 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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Big names, great deals

Big names, great deals

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Filter for what you want

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United Airlines flights from Great Falls to London

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

Alaska Airlines flights from Great Falls to London

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

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Use the filters below to find and compare flights from Great Falls to London that are best for you.

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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

Best price found

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.

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

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