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.

£593 Cheap Flights from Great Falls to London in 2026

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Find the cheapest flights from Great Falls to London

Round-trip

One-way

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Enter your travel dates to find the best prices.

14:30 - 08:35

GTF

LHR

59h 05m

2 stops

07:25 - 13:34

LHR

GTF

37h 09m

2 stops

£593United Airlines

Fri, 17 Apr - Fri, 8 May

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

07:30 - 21:18

LHR

GTF

20h 48m

2 stops

£594United Airlines

Mon, 27 Apr - Fri, 15 May

06:15 - 12:25

GTF

LHR

23h 10m

1 stop

17:40 - 21:18

LHR

GTF

34h 38m

2 stops

£596United Airlines

Tue, 14 Apr - Wed, 6 May

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

14:50 - 21:18

LHR

GTF

13h 28m

1 stop

£607United Airlines

Tue, 14 Apr - Fri, 8 May

06:15 - 06:30

GTF

LHR

17h 15m

2 stops

11:25 - 21:18

LHR

GTF

16h 53m

1 stop

£610United Airlines

Tue, 14 Apr - Fri, 1 May

14:30 - 21:20

GTF

LHR

23h 50m

2 stops

11:25 - 21:18

LHR

GTF

16h 53m

1 stop

£611United Airlines

Sat, 18 Apr - Wed, 6 May

14:30 - 06:30

GTF

LHR

33h 00m

2 stops

10:00 - 21:18

LHR

GTF

18h 18m

2 stops

£613United Airlines

Sat, 18 Apr - Tue, 5 May

14:30 - 06:35

GTF

LHR

57h 05m

2 stops

14:50 - 21:18

LHR

GTF

13h 28m

1 stop

£614United Airlines

Fri, 17 Apr - Fri, 8 May

14:35 - 12:25

GTF

LHR

14h 50m

1 stop

07:25 - 21:18

LHR

GTF

20h 53m

2 stops

£623United Airlines

Thu, 30 Apr - Wed, 13 May

06:15 - 11:35

GTF

LHR

22h 20m

2 stops

07:25 - 21:18

LHR

GTF

20h 53m

2 stops

£626United Airlines

Thu, 30 Apr - Wed, 13 May

United Airlines flights from Great Falls to London

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

United Airlines

17 Apr

GTF14:30Great Falls

59h 05m

2 stops

LHR08:35London Heathrow

8 May

LHR07:25London Heathrow

37h 09m

2 stops

GTF13:34Great Falls

£593

United Airlines

27 Apr

GTF14:30Great Falls

14h 55m

1 stop

LHR12:25London Heathrow

14 May

LHR09:30London Heathrow

18h 48m

2 stops

GTF21:18Great Falls

£594

United Airlines

14 Apr

GTF06:15Great Falls

23h 10m

1 stop

LHR12:25London Heathrow

6 May

LHR17:40London Heathrow

34h 38m

2 stops

GTF21:18Great Falls

£596

Delta flights from Great Falls to London

Our best Delta deals on Great Falls to London flight tickets

Delta

27 Apr

GTF05:30Great Falls

23h 40m

2 stops

LHR12:10London Heathrow

12 May

LHR11:45London Heathrow

36h 54m

2 stops

GTF17:39Great Falls

£683

Delta

15 Apr

GTF13:09Great Falls

17h 41m

2 stops

LHR13:50London Heathrow

8 May

LHR06:30London Heathrow

18h 09m

2 stops

GTF17:39Great Falls

£686

Delta

14 Apr

GTF05:30Great Falls

22h 30m

1 stop

LHR11:00London Heathrow

11 May

LHR17:35London Heathrow

31h 04m

2 stops

GTF17:39Great Falls

£694

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 17/4

14:30-08:35

2 stops59h 05m

London Heathrow

Fri 8/5

07:25-13:34

2 stops37h 09m

£593

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 27/4

06:15-09:40

1 stop20h 25m

London Heathrow

Fri 15/5

07:30-21:18

2 stops20h 48m

£594

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 14/4

06:15-12:25

1 stop23h 10m

London Heathrow

Wed 6/5

17:40-21:18

2 stops34h 38m

£596

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 14/4

06:15-09:40

1 stop20h 25m

London Heathrow

Fri 8/5

14:50-21:18

1 stop13h 28m

£607

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 14/4

06:15-06:30

2 stops17h 15m

London Heathrow

Fri 1/5

11:25-21:18

1 stop16h 53m

£610

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 18/4

14:30-21:20

2 stops23h 50m

London Heathrow

Wed 6/5

11:25-21:18

1 stop16h 53m

£611

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 18/4

14:30-06:30

2 stops33h 00m

London Heathrow

Tue 5/5

10:00-21:18

2 stops18h 18m

£613

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 17/4

14:30-06:35

2 stops57h 05m

London Heathrow

Fri 8/5

14:50-21:18

1 stop13h 28m

£614

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 30/4

14:35-12:25

1 stop14h 50m

London Heathrow

Wed 13/5

07:25-21:18

2 stops20h 53m

£623

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 30/4

06:15-11:35

2 stops22h 20m

London Heathrow

Wed 13/5

07:25-21:18

2 stops20h 53m

£626

Flights are sorted by cheapest return flights first.

Sorted 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

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	59h 05m
Direct flights	None

The fastest flight from Great Falls to London takes 59h 05m

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 59h 05m, 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

Wembley

Guildford

Chelmsford

Hayes

Dover

Folkestone

Ramsgate

Worthing

Colchester

Chichester

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 £593

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to London departing on 17/4. 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

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Price Alerts

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Find the cheapest flights from Great Falls to London

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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

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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?

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?

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

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