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 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.

£463 Cheap Flights from Great Falls to London in 2026

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from Great Falls to London

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:25 - 09:40

GTF

LHR

12h 15m

1 stop

07:45 - 21:21

LHR

GTF

20h 36m

2 stops

£751United Airlines

Fri, 9 Oct - Sat, 17 Oct

14:25 - 08:35

GTF

LHR

59h 10m

2 stops

07:45 - 21:21

LHR

GTF

20h 36m

2 stops

£782United Airlines

Fri, 9 Oct - Sat, 17 Oct

18:20 - 10:00

GTF

LHR

32h 40m

1 stop

10:55 - 22:53

LHR

GTF

18h 58m

1 stop

£792KLM

Fri, 9 Oct - Sat, 17 Oct

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

06:55 - 21:34

LHR

GTF

21h 39m

2 stops

£907United Airlines

Wed, 3 Jun - Wed, 10 Jun

06:15 - 06:30

GTF

LHR

17h 15m

2 stops

07:25 - 21:34

LHR

GTF

21h 09m

2 stops

£910United Airlines

Wed, 3 Jun - Wed, 10 Jun

06:15 - 10:00

GTF

LHR

20h 45m

2 stops

17:40 - 21:34

LHR

GTF

34h 54m

2 stops

£919United Airlines

Wed, 8 Jul - Wed, 22 Jul

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

14:50 - 21:34

LHR

GTF

13h 44m

1 stop

£920United Airlines

Wed, 3 Jun - Wed, 10 Jun

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

09:30 - 21:34

LHR

GTF

43h 04m

2 stops

£958United Airlines

Sun, 7 Jun - Sun, 14 Jun

06:15 - 10:00

GTF

LHR

20h 45m

2 stops

09:30 - 21:34

LHR

GTF

43h 04m

2 stops

£960United Airlines

Sun, 7 Jun - Sun, 14 Jun

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

14:50 - 21:34

LHR

GTF

13h 44m

1 stop

£973United Airlines

Sun, 7 Jun - Sun, 14 Jun

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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

9 Oct

GTF14:25Great Falls

12h 15m

1 stop

LHR09:40London Heathrow

17 Oct

LHR07:45London Heathrow

20h 36m

2 stops

GTF21:21Great Falls

£751

United Airlines

9 Oct

GTF14:25Great Falls

59h 10m

2 stops

LHR08:35London Heathrow

17 Oct

LHR07:45London Heathrow

20h 36m

2 stops

GTF21:21Great Falls

£782

United Airlines

3 Jun

GTF06:15Great Falls

20h 25m

1 stop

LHR09:40London Heathrow

10 Jun

LHR06:55London Heathrow

21h 39m

2 stops

GTF21:34Great Falls

£907

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 9/10

14:25-09:40

1 stop12h 15m

London Heathrow

Sat 17/10

07:45-21:21

2 stops20h 36m

£751

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 9/10

14:25-08:35

2 stops59h 10m

London Heathrow

Sat 17/10

07:45-21:21

2 stops20h 36m

£782

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 9/10

18:20-10:00

1 stop32h 40m

London Heathrow

Sat 17/10

10:55-22:53

1 stop18h 58m

£792

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 3/6

06:15-09:40

1 stop20h 25m

London Heathrow

Wed 10/6

06:55-21:34

2 stops21h 39m

£907

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 3/6

06:15-06:30

2 stops17h 15m

London Heathrow

Wed 10/6

07:25-21:34

2 stops21h 09m

£910

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 8/7

06:15-10:00

2 stops20h 45m

London Heathrow

Wed 22/7

17:40-21:34

2 stops34h 54m

£919

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 3/6

06:15-09:40

1 stop20h 25m

London Heathrow

Wed 10/6

14:50-21:34

1 stop13h 44m

£920

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 7/6

06:15-09:40

1 stop20h 25m

London Heathrow

Sun 14/6

09:30-21:34

2 stops43h 04m

£958

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 7/6

06:15-10:00

2 stops20h 45m

London Heathrow

Sun 14/6

09:30-21:34

2 stops43h 04m

£960

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 7/6

06:15-09:40

1 stop20h 25m

London Heathrow

Sun 14/6

14:50-21:34

1 stop13h 44m

£973

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

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

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.

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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 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

Milton Keynes

Luton

Gatwick

Slough

Maidstone

Wembley

Southend-on-Sea

Ipswich

Canterbury

Ilford

Guildford

Hayes

Dover

Chelmsford

Folkestone

Chichester

Bedford

Ramsgate

Harlow

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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Fly into one of these airports located in London

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Cheap flights from Great Falls to London from £463

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 15/5. 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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United Airlines flights from Great Falls to London

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

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

Can stopping save me money on Great Falls to London flights?

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.

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