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.

£313 Cheap Flights from Great Falls to London in 2026

Find the cheapest flights from Great Falls to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

06:15 - 08:30GTF Great Falls-LHR London Heathrow

43h 15m2 stops Denver Intl Toronto Pearson Intl

07:30 - 21:20LHR London Heathrow-GTF Great Falls

20h 50m2 stops Frankfurt am Main Denver Intl

£569United Airlines

Sun, 6 Dec - Wed, 9 Dec

14:25 - 16:50GTF Great Falls-LHR London Heathrow

43h 25m2 stops Denver Intl Frankfurt am Main

11:35 - 21:20LHR London Heathrow-GTF Great Falls

16h 45m1 stop Denver Intl

£578United Airlines

Sun, 6 Dec - Wed, 9 Dec

06:30 - 09:40GTF Great Falls-LHR London Heathrow

20h 10m1 stop Denver Intl

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

22h 03m2 stops Munich Franz Josef Strauss Denver Intl

£651United Airlines

Sun, 8 Nov - Tue, 17 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

£653United Airlines

Sun, 8 Nov - Tue, 17 Nov

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

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:01LHR London Heathrow-GTF Great Falls

32h 16m1 stop Seattle/Tacoma Intl

£659Alaska Airlines

Sun, 8 Nov - Fri, 20 Nov

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

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

07:30 - 21:38LHR London Heathrow-GTF Great Falls

21h 08m2 stops Frankfurt am Main Denver Intl

£661United Airlines

Sun, 8 Nov - Wed, 18 Nov

14:45 - 06:30GTF Great Falls-LHR London Heathrow

56h 45m2 stops Denver Intl Toronto Pearson Intl

09:30 - 21:38LHR London Heathrow-GTF Great Falls

19h 08m2 stops Frankfurt am Main Denver Intl

£665United Airlines

Fri, 6 Nov - Wed, 18 Nov

06:30 - 09:40GTF Great Falls-LHR London Heathrow

20h 10m1 stop Denver Intl

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

22h 03m2 stops Munich Franz Josef Strauss Denver Intl

£671United Airlines

Mon, 2 Nov - Tue, 17 Nov

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

11h 55m1 stop Denver Intl

06:35 - 13:49LHR London Heathrow-GTF Great Falls

38h 14m2 stops Munich Franz Josef Strauss Denver Intl

£672United Airlines

Tue, 3 Nov - Tue, 17 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

£673United Airlines

Tue, 3 Nov - Tue, 17 Nov

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Alaska Airlines flights from Great Falls to London

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

Alaska Airlines

8 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

19 Nov

LHR14:45London Heathrow

32h 16m

1 stop

GTF16:01Great Falls

£659

Alaska Airlines

3 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

17 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£692

Alaska Airlines

6 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

19 Nov

LHR14:45London Heathrow

32h 16m

1 stop

GTF16:01Great Falls

£696

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

Delta

7 Nov

GTF18:27Great Falls

34h 13m

2 stops

LHR11:40London Heathrow

17 Nov

LHR06:20London Heathrow

18h 21m

2 stops

GTF17:41Great Falls

£678

Delta

3 Nov

GTF13:18Great Falls

17h 27m

2 stops

LHR13:45London Heathrow

20 Nov

LHR06:20London Heathrow

18h 21m

2 stops

GTF17:41Great Falls

£703

Delta

6 Nov

GTF13:18Great Falls

17h 27m

2 stops

LHR13:45London Heathrow

20 Nov

LHR06:20London Heathrow

18h 21m

2 stops

GTF17:41Great Falls

£716

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 6/12

06:15-08:30

2 stops43h 15m

London Heathrow

Wed 9/12

07:30-21:20

2 stops20h 50m

£569

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 6/12

14:25-16:50

2 stops43h 25m

London Heathrow

Wed 9/12

11:35-21:20

1 stop16h 45m

£578

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

06:30-09:40

1 stop20h 10m

London Heathrow

Tue 17/11

06:35-21:38

2 stops22h 03m

£651

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

06:30-07:10

2 stops17h 40m

London Heathrow

Tue 17/11

06:35-21:38

2 stops22h 03m

£653

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 20/11

14:45-16:01

1 stop32h 16m

£659

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

06:30-07:10

2 stops17h 40m

London Heathrow

Wed 18/11

07:30-21:38

2 stops21h 08m

£661

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 6/11

14:45-06:30

2 stops56h 45m

London Heathrow

Wed 18/11

09:30-21:38

2 stops19h 08m

£665

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

06:30-09:40

1 stop20h 10m

London Heathrow

Tue 17/11

06:35-21:38

2 stops22h 03m

£671

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

14:45-09:40

1 stop11h 55m

London Heathrow

Tue 17/11

06:35-13:49

2 stops38h 14m

£672

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

£673

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 and Delta 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	12h 15m
Direct flights	None

The fastest flight from Great Falls to London takes 12h 15m

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 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

Wembley

Gatwick

Milton Keynes

Luton

Southend-on-Sea

Slough

Ipswich

Maidstone

Folkestone

Ilford

Hastings

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 £313

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 4/9. 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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Alaska Airlines flights from Great Falls to London

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

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

momondo Fare Finder

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

See travel insights to London from

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

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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