How do I get Price Alerts for flights from Great Falls to London Heathrow Airport?

Price Alerts will notify you by email when the price for flights to London Heathrow Airport from Great Falls decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

How can I save money on flights from Great Falls to London Heathrow Airport with momondo?

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

When did momondo last update prices for flights from Great Falls Airport to London Heathrow Airport?

Prices for flights from Great Falls Airport to London Heathrow Airport are refreshed on a daily basis.

How old do you have to be to fly from Great Falls Airport to London Heathrow Airport?

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 Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£656 Cheap Flights from Great Falls to London Heathrow Airport in 2026

Voted winner of Europe's Best Travel App 2023

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 - 09:40

GTF

LHR

20h 10m

1 stop

06:35 - 21:47

LHR

GTF

22h 12m

2 stops

£656United Airlines

Sun, 8 Nov - Thu, 12 Nov

06:30 - 09:40

GTF

LHR

20h 10m

1 stop

06:35 - 21:47

LHR

GTF

22h 12m

2 stops

£657United Airlines

Sun, 8 Nov - Thu, 12 Nov

06:30 - 07:10

GTF

LHR

17h 40m

2 stops

06:35 - 21:47

LHR

GTF

22h 12m

2 stops

£659United Airlines

Sun, 8 Nov - Thu, 12 Nov

16:57 - 12:20

GTF

LHR

12h 23m

1 stop

14:45 - 16:17

LHR

GTF

32h 32m

1 stop

£665Alaska Airlines

Sun, 8 Nov - Thu, 12 Nov

14:25 - 09:40

GTF

LHR

12h 15m

1 stop

06:55 - 21:12

LHR

GTF

21h 17m

2 stops

£739United Airlines

Thu, 13 Aug - Thu, 20 Aug

06:15 - 07:15

GTF

LHR

18h 00m

2 stops

06:55 - 21:12

LHR

GTF

21h 17m

2 stops

£743United Airlines

Thu, 13 Aug - Thu, 20 Aug

14:25 - 09:40

GTF

LHR

12h 15m

1 stop

14:50 - 21:12

LHR

GTF

13h 22m

1 stop

£761United Airlines

Thu, 13 Aug - Thu, 20 Aug

05:40 - 10:00

GTF

LHR

21h 20m

1 stop

06:30 - 12:28

LHR

GTF

36h 58m

2 stops

£996Delta

Mon, 17 Aug - Fri, 21 Aug

14:25 - 12:25

GTF

LHR

15h 00m

1 stop

14:50 - 21:12

LHR

GTF

13h 22m

1 stop

£1,018United Airlines

Mon, 17 Aug - Fri, 21 Aug

13:17 - 13:05

GTF

LHR

16h 48m

2 stops

16:20 - 12:37

LHR

GTF

27h 17m

2 stops

£1,068Delta

Thu, 16 Jul - Wed, 29 Jul

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United Airlines flights from Great Falls to London Heathrow Airport

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

United Airlines

8 Nov

GTF06:30Great Falls

20h 10m

1 stop

LHR09:40London Heathrow

12 Nov

LHR06:35London Heathrow

22h 12m

2 stops

GTF21:47Great Falls

£656

United Airlines

8 Nov

GTF06:30Great Falls

20h 10m

1 stop

LHR09:40London Heathrow

12 Nov

LHR06:35London Heathrow

22h 12m

2 stops

GTF21:47Great Falls

£657

United Airlines

8 Nov

GTF06:30Great Falls

17h 40m

2 stops

LHR07:10London Heathrow

12 Nov

LHR06:35London Heathrow

22h 12m

2 stops

GTF21:47Great Falls

£659

Delta flights from Great Falls to London Heathrow Airport

Our best Delta deals on Great Falls to London Heathrow Airport flight tickets

Delta

17 Aug

GTF05:40Great Falls

21h 20m

1 stop

LHR10:00London Heathrow

21 Aug

LHR06:30London Heathrow

36h 58m

2 stops

GTF12:28Great Falls

£996

Delta

16 Jul

GTF13:17Great Falls

16h 48m

2 stops

LHR13:05London Heathrow

29 Jul

LHR16:20London Heathrow

27h 17m

2 stops

GTF12:37Great Falls

£1,068

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 8/11

06:30-09:40

1 stop20h 10m

London Heathrow

Thu 12/11

06:35-21:47

2 stops22h 12m

£656

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 8/11

06:30-09:40

1 stop20h 10m

London Heathrow

Thu 12/11

06:35-21:47

2 stops22h 12m

£657

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 8/11

06:30-07:10

2 stops17h 40m

London Heathrow

Thu 12/11

06:35-21:47

2 stops22h 12m

£659

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 8/11

16:57-12:20

1 stop12h 23m

London Heathrow

Thu 12/11

14:45-16:17

1 stop32h 32m

£665

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 13/8

14:25-09:40

1 stop12h 15m

London Heathrow

Thu 20/8

06:55-21:12

2 stops21h 17m

£739

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 13/8

06:15-07:15

2 stops18h 00m

London Heathrow

Thu 20/8

06:55-21:12

2 stops21h 17m

£743

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 13/8

14:25-09:40

1 stop12h 15m

London Heathrow

Thu 20/8

14:50-21:12

1 stop13h 22m

£761

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 17/8

05:40-10:00

1 stop21h 20m

London Heathrow

Fri 21/8

06:30-12:28

2 stops36h 58m

£996

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 17/8

14:25-12:25

1 stop15h 00m

London Heathrow

Fri 21/8

14:50-21:12

1 stop13h 22m

£1,018

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 16/7

13:17-13:05

2 stops16h 48m

London Heathrow

Wed 29/7

16:20-12:37

2 stops27h 17m

£1,068

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Great Falls to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Great Falls to London Heathrow Airport (GTF to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to London Heathrow Airport

Fastest flight time	12h 15m
Direct flights	None

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

There are no direct flights from Great Falls to London Heathrow Airport. There are no popular flight routes from Great Falls to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from Great Falls to London Heathrow Airport

How far is Great Falls to London Heathrow by plane?
The distance between Great Falls and London Heathrow is about 4468.7 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 Heathrow Airport?
Prices for flights from Great Falls Airport to London Heathrow Airport are refreshed on a daily basis.
How old do you have to be to fly from Great Falls Airport to London Heathrow Airport?
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 Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Great Falls to London Heathrow Airport

How do I get Price Alerts for flights from Great Falls to London Heathrow Airport?
Price Alerts will notify you by email when the price for flights to London Heathrow Airport from Great Falls decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from Great Falls to London Heathrow Airport with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Eastbourne

Wembley

Gatwick

Milton Keynes

Luton

Stratford-upon-Avon

Southend-on-Sea

Slough

Northampton

Maidstone

Ipswich

Swindon

Ilford

Canterbury

Folkestone

Poole

Guildford

Hayes

Chichester

Hastings

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Great Falls to London . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to London from Great Falls with this policy.

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

Once you have performed a search for Great Falls to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to London from Great Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.