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.

£651 Cheap Flights from Great Falls to London Heathrow Airport in 2026

Find the cheapest flights from Great Falls to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

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

13h 50m1 stop Salt Lake City

17:05 - 17:43LHR London Heathrow-GTF Great Falls

31h 38m2 stops Amsterdam Schiphol Salt Lake City

£651Multiple Airlines

Tue, 16 Feb - Tue, 23 Feb

13:10 - 13:45GTF Great Falls-LHR London Heathrow

17h 35m2 stops Salt Lake City Paris Charles de Gaulle

20:25 - 17:43LHR London Heathrow-GTF Great Falls

28h 18m2 stops Amsterdam Schiphol Salt Lake City

£654Multiple Airlines

Tue, 16 Feb - Tue, 23 Feb

13:18 - 10:00GTF Great Falls-LHR London Heathrow

13h 42m1 stop Salt Lake City

20:25 - 17:41LHR London Heathrow-GTF Great Falls

28h 16m2 stops Amsterdam Schiphol Salt Lake City

£665Multiple Airlines

Mon, 2 Nov - Mon, 16 Nov

06:30 - 07:10GTF Great Falls-LHR London Heathrow

17h 40m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

06:35 - 21:38LHR London Heathrow-GTF Great Falls

22h 03m2 stops Munich Franz Josef Strauss Denver Intl

£667United Airlines

Tue, 3 Nov - Tue, 17 Nov

13:18 - 13:45GTF Great Falls-LHR London Heathrow

17h 27m2 stops Salt Lake City Paris Charles de Gaulle

20:25 - 17:41LHR London Heathrow-GTF Great Falls

28h 16m2 stops Amsterdam Schiphol Salt Lake City

£668Multiple Airlines

Mon, 2 Nov - Mon, 16 Nov

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

13h 50m1 stop Salt Lake City

10:45 - 17:43LHR London Heathrow-GTF Great Falls

13h 58m1 stop Salt Lake City

£672Multiple Airlines

Tue, 16 Feb - Tue, 23 Feb

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£686Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£687Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

16:59 - 12:20GTF Great Falls-LHR London Heathrow

12h 21m1 stop Seattle/Tacoma Intl

14:45 - 16:19LHR London Heathrow-GTF Great Falls

32h 34m1 stop Seattle/Tacoma Intl

£687Alaska Airlines

Tue, 10 Nov - Fri, 13 Nov

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

19h 20m2 stops Salt Lake City Seattle/Tacoma Intl

06:30 - 17:41LHR London Heathrow-GTF Great Falls

18h 11m2 stops Amsterdam Schiphol Salt Lake City

£690KLM

Tue, 15 Sep - Wed, 30 Sep

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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

3 Nov

GTF06:30Great Falls

17h 40m

2 stops

LHR07:10London Heathrow

17 Nov

LHR06:35London Heathrow

22h 03m

2 stops

GTF21:38Great Falls

£667

United Airlines

15 Sept

GTF06:15Great Falls

20h 25m

1 stop

LHR09:40London Heathrow

30 Sept

LHR09:30London Heathrow

42h 52m

2 stops

GTF21:22Great Falls

£695

United Airlines

4 Oct

GTF06:15Great Falls

23h 20m

1 stop

LHR12:35London Heathrow

11 Oct

LHR14:05London Heathrow

38h 17m

2 stops

GTF21:22Great Falls

£708

Alaska Airlines flights from Great Falls to London Heathrow Airport

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

Alaska Airlines

10 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£686

Alaska Airlines

10 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£687

Alaska Airlines

10 Nov

GTF16:59Great Falls

12h 21m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 34m

1 stop

GTF16:19Great Falls

£687

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 Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 16/2

13:10-10:00

1 stop13h 50m

London Heathrow

Tue 23/2

17:05-17:43

2 stops31h 38m

£651

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 16/2

13:10-13:45

2 stops17h 35m

London Heathrow

Tue 23/2

20:25-17:43

2 stops28h 18m

£654

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

13:18-10:00

1 stop13h 42m

London Heathrow

Mon 16/11

20:25-17:41

2 stops28h 16m

£665

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

06:30-07:10

2 stops17h 40m

London Heathrow

Tue 17/11

06:35-21:38

2 stops22h 03m

£667

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 2/11

13:18-13:45

2 stops17h 27m

London Heathrow

Mon 16/11

20:25-17:41

2 stops28h 16m

£668

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 16/2

13:10-10:00

1 stop13h 50m

London Heathrow

Tue 23/2

10:45-17:43

1 stop13h 58m

£672

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£686

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£687

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£687

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 15/9

13:15-15:35

2 stops19h 20m

London Heathrow

Wed 30/9

06:30-17:41

2 stops18h 11m

£690

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

Best price found	£651
Fastest flight time	13h 42m
Direct flights	None

The best flight deal from Great Falls to London Heathrow Airport found on momondo in the last 72 hours is £651

The fastest flight from Great Falls to London Heathrow Airport takes 13h 42m

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 13h 42m, 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

Stratford-upon-Avon

Luton

Southend-on-Sea

Slough

Northampton

Ipswich

Maidstone

Swindon

Folkestone

Hastings

Ilford

Poole

Canterbury

Chichester

Hayes

Guildford

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.