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.

£501 Cheap Flights from Great Falls to London in 2026/27

Find the cheapest flights from Great Falls to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

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

17h 10m2 stops Denver Intl Washington, D.C. Dulles Intl

06:35 - 21:34LHR London Heathrow-GTF Great Falls

21h 59m2 stops Munich Franz Josef Strauss Denver Intl

£589United Airlines

Tue, 2 Mar - Thu, 4 Mar

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

17h 10m2 stops Denver Intl Washington, D.C. Dulles Intl

06:35 - 21:34LHR London Heathrow-GTF Great Falls

21h 59m2 stops Munich Franz Josef Strauss Denver Intl

£590United Airlines

Tue, 2 Mar - Thu, 4 Mar

14:42 - 09:40GTF Great Falls-LHR London Heathrow

11h 58m1 stop Denver Intl

06:35 - 21:34LHR London Heathrow-GTF Great Falls

21h 59m2 stops Munich Franz Josef Strauss Denver Intl

£636United Airlines

Tue, 2 Mar - Thu, 4 Mar

14:42 - 09:40GTF Great Falls-LHR London Heathrow

11h 58m1 stop Denver Intl

06:35 - 21:34LHR London Heathrow-GTF Great Falls

21h 59m2 stops Munich Franz Josef Strauss Denver Intl

£637United Airlines

Tue, 2 Mar - Thu, 4 Mar

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

13h 50m1 stop Salt Lake City

06:30 - 17:43LHR London Heathrow-GTF Great Falls

18h 13m2 stops Amsterdam Schiphol Salt Lake City

£675KLM

Mon, 5 Apr - Wed, 14 Apr

16:00 - 12:20GTF Great Falls-LHR London Heathrow

13h 20m1 stop Seattle/Tacoma Intl

14:45 - 15:20LHR London Heathrow-GTF Great Falls

31h 35m1 stop Seattle/Tacoma Intl

£677Alaska Airlines

Tue, 2 Mar - Thu, 4 Mar

16:00 - 12:20GTF Great Falls-LHR London Heathrow

13h 20m1 stop Seattle/Tacoma Intl

14:45 - 15:20LHR London Heathrow-GTF Great Falls

31h 35m1 stop Seattle/Tacoma Intl

£677Alaska Airlines

Tue, 2 Mar - Thu, 4 Mar

13:10 - 15:35GTF Great Falls-LHR London Heathrow

19h 25m2 stops Salt Lake City Seattle/Tacoma Intl

08:40 - 22:53LHR London Heathrow-GTF Great Falls

21h 13m2 stops Amsterdam Schiphol Salt Lake City

£679KLM

Mon, 5 Apr - Wed, 14 Apr

14:42 - 09:40GTF Great Falls-LHR London Heathrow

11h 58m1 stop Denver Intl

06:35 - 21:34LHR London Heathrow-GTF Great Falls

20h 59m2 stops Munich Franz Josef Strauss Denver Intl

£683United Airlines

Tue, 2 Mar - Tue, 16 Mar

06:30 - 05:55GTF Great Falls-LHR London Heathrow

16h 25m2 stops Denver Intl Chicago O'Hare Intl

06:35 - 21:34LHR London Heathrow-GTF Great Falls

20h 59m2 stops Munich Franz Josef Strauss Denver Intl

£686United Airlines

Tue, 2 Mar - Tue, 16 Mar

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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

2 Mar

GTF16:00Great Falls

13h 20m

1 stop

LHR12:20London Heathrow

4 Mar

LHR14:45London Heathrow

31h 35m

1 stop

GTF15:20Great Falls

£677

Alaska Airlines

2 Mar

GTF16:00Great Falls

13h 20m

1 stop

LHR12:20London Heathrow

4 Mar

LHR14:45London Heathrow

31h 35m

1 stop

GTF15:20Great Falls

£677

United Airlines flights from Great Falls to London

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

United Airlines

2 Mar

GTF06:30Great Falls

17h 10m

2 stops

LHR06:40London Heathrow

4 Mar

LHR06:35London Heathrow

21h 59m

2 stops

GTF21:34Great Falls

£589

United Airlines

2 Mar

GTF06:30Great Falls

17h 10m

2 stops

LHR06:40London Heathrow

4 Mar

LHR06:35London Heathrow

21h 59m

2 stops

GTF21:34Great Falls

£590

United Airlines

2 Mar

GTF14:42Great Falls

11h 58m

1 stop

LHR09:40London Heathrow

4 Mar

LHR06:35London Heathrow

21h 59m

2 stops

GTF21:34Great Falls

£636

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

06:30-06:40

2 stops17h 10m

London Heathrow

Thu 4/3

06:35-21:34

2 stops21h 59m

£589

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

06:30-06:40

2 stops17h 10m

London Heathrow

Thu 4/3

06:35-21:34

2 stops21h 59m

£590

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

14:42-09:40

1 stop11h 58m

London Heathrow

Thu 4/3

06:35-21:34

2 stops21h 59m

£636

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

14:42-09:40

1 stop11h 58m

London Heathrow

Thu 4/3

06:35-21:34

2 stops21h 59m

£637

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 5/4

13:10-10:00

1 stop13h 50m

London Heathrow

Wed 14/4

06:30-17:43

2 stops18h 13m

£675

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

16:00-12:20

1 stop13h 20m

London Heathrow

Thu 4/3

14:45-15:20

1 stop31h 35m

£677

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

16:00-12:20

1 stop13h 20m

London Heathrow

Thu 4/3

14:45-15:20

1 stop31h 35m

£677

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 5/4

13:10-15:35

2 stops19h 25m

London Heathrow

Wed 14/4

08:40-22:53

2 stops21h 13m

£679

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

14:42-09:40

1 stop11h 58m

London Heathrow

Tue 16/3

06:35-21:34

2 stops20h 59m

£683

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 2/3

06:30-05:55

2 stops16h 25m

London Heathrow

Tue 16/3

06:35-21:34

2 stops20h 59m

£686

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

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

United Airlines and Alaska 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

Best price found	£501
Fastest flight time	13h 50m
Direct flights	None

The best one-way flight to London from Great Falls in the past 72 hours is £501. The best return flight deal from Great Falls to London found on momondo in the last 72 hours is £589.

The fastest flight from Great Falls to London takes 13h 50m

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 13h 50m, 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

Southend-on-Sea

Luton

Ipswich

Slough

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Colchester

Chichester

Hayes

Bedford

Guildford

Harlow

Winchester

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.

An easier way to manage your London trip

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Cheap flights from Great Falls to London from £501

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 16/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Great Falls to London

Cheap return flights

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Big names, great deals

Big names, great deals

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Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Alaska Airlines flights from Great Falls to London

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

United Airlines flights from Great Falls to London

Our best United 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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