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 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.

£309 Cheap Flights from Great Falls to London in 2026

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Great Falls to London

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

14:30 - 09:40

GTF

LHR

13h 10m

1 stop

08:30 - 13:31

LHR

GTF

36h 01m

2 stops

£532United Airlines

Mon, 23 Mar - Tue, 31 Mar

06:15 - 09:40

GTF

LHR

21h 25m

1 stop

08:30 - 21:17

LHR

GTF

43h 47m

2 stops

£532United Airlines

Mon, 23 Mar - Tue, 31 Mar

06:15 - 07:10

GTF

LHR

18h 55m

2 stops

08:30 - 13:31

LHR

GTF

36h 01m

2 stops

£534United Airlines

Mon, 23 Mar - Tue, 31 Mar

06:15 - 11:15

GTF

LHR

23h 00m

2 stops

08:30 - 13:31

LHR

GTF

36h 01m

2 stops

£535United Airlines

Sun, 22 Mar - Tue, 31 Mar

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

13:35 - 13:31

LHR

GTF

54h 56m

2 stops

£542United Airlines

Wed, 8 Apr - Wed, 15 Apr

14:30 - 09:40

GTF

LHR

13h 10m

1 stop

14:50 - 21:17

LHR

GTF

13h 27m

1 stop

£543United Airlines

Mon, 23 Mar - Tue, 31 Mar

14:30 - 09:40

GTF

LHR

13h 10m

1 stop

11:25 - 21:17

LHR

GTF

16h 52m

1 stop

£544United Airlines

Mon, 23 Mar - Tue, 31 Mar

06:15 - 11:35

GTF

LHR

22h 20m

2 stops

13:35 - 13:31

LHR

GTF

54h 56m

2 stops

£545United Airlines

Wed, 8 Apr - Wed, 15 Apr

06:15 - 11:15

GTF

LHR

23h 00m

2 stops

11:25 - 13:31

LHR

GTF

33h 06m

1 stop

£547United Airlines

Sun, 22 Mar - Tue, 31 Mar

14:30 - 09:40

GTF

LHR

12h 10m

1 stop

11:25 - 21:17

LHR

GTF

16h 52m

1 stop

£555United Airlines

Wed, 8 Apr - Wed, 15 Apr

United Airlines flights from Great Falls to London

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

United Airlines

23 Mar

GTF14:30Great Falls

13h 10m

1 stop

LHR09:40London Heathrow

31 Mar

LHR08:30London Heathrow

36h 01m

2 stops

GTF13:31Great Falls

£532

United Airlines

23 Mar

GTF06:15Great Falls

21h 25m

1 stop

LHR09:40London Heathrow

31 Mar

LHR08:30London Heathrow

43h 47m

2 stops

GTF21:17Great Falls

£532

United Airlines

23 Mar

GTF06:15Great Falls

18h 55m

2 stops

LHR07:10London Heathrow

31 Mar

LHR08:30London Heathrow

36h 01m

2 stops

GTF13:31Great Falls

£534

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

Delta

22 Mar

GTF18:22Great Falls

33h 38m

1 stop

LHR10:00London Heathrow

31 Mar

LHR10:55London Heathrow

13h 47m

1 stop

GTF17:42Great Falls

£637

Delta

23 Mar

GTF13:05Great Falls

16h 50m

2 stops

LHR11:55London Heathrow

29 Mar

LHR16:50London Heathrow

26h 34m

2 stops

GTF12:24Great Falls

£677

Delta

21 Mar

GTF13:05Great Falls

14h 55m

1 stop

LHR10:00London Heathrow

31 Mar

LHR10:55London Heathrow

13h 47m

1 stop

GTF17:42Great Falls

£807

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 23/3

14:30-09:40

1 stop13h 10m

London Heathrow

Tue 31/3

08:30-13:31

2 stops36h 01m

£532

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 23/3

06:15-09:40

1 stop21h 25m

London Heathrow

Tue 31/3

08:30-21:17

2 stops43h 47m

£532

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 23/3

06:15-07:10

2 stops18h 55m

London Heathrow

Tue 31/3

08:30-13:31

2 stops36h 01m

£534

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 22/3

06:15-11:15

2 stops23h 00m

London Heathrow

Tue 31/3

08:30-13:31

2 stops36h 01m

£535

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 8/4

06:15-09:40

1 stop20h 25m

London Heathrow

Wed 15/4

13:35-13:31

2 stops54h 56m

£542

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 23/3

14:30-09:40

1 stop13h 10m

London Heathrow

Tue 31/3

14:50-21:17

1 stop13h 27m

£543

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 23/3

14:30-09:40

1 stop13h 10m

London Heathrow

Tue 31/3

11:25-21:17

1 stop16h 52m

£544

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 8/4

06:15-11:35

2 stops22h 20m

London Heathrow

Wed 15/4

13:35-13:31

2 stops54h 56m

£545

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 22/3

06:15-11:15

2 stops23h 00m

London Heathrow

Tue 31/3

11:25-13:31

1 stop33h 06m

£547

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 8/4

14:30-09:40

1 stop12h 10m

London Heathrow

Wed 15/4

11:25-21:17

1 stop16h 52m

£555

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

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.

Search flight deals

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

Maidstone

Slough

Southend-on-Sea

Ipswich

Canterbury

Ilford

Guildford

Chelmsford

Wembley

Hayes

Dover

Folkestone

Worthing

Colchester

Bedford

Ramsgate

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

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Wed 25/3

Wed 1/4

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Nearby airports

Cabin classes

Other United Kingdom destinations

Complete your trip

Feeling lucky

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Cheap flights from Great Falls to London from £309

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 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Great Falls to London

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

United Airlines flights from Great Falls to London

Our best United 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

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

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to London?

Can I find flights from Great Falls to London with flexible booking policies on momondo?

How can momondo help me find flights from Great Falls to London?

I’m not ready to book a flight from Great Falls to London right now. Can momondo alert me if prices change?

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

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year