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.

£748 Cheap Flights from Great Falls to London Heathrow Airport 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

£748United 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

£779United 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

£789KLM

Fri, 9 Oct - Sat, 17 Oct

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

09:30 - 21:34

LHR

GTF

43h 04m

2 stops

£954United 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

£957United 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

£969United Airlines

Sun, 7 Jun - Sun, 14 Jun

14:37 - 09:40

GTF

LHR

12h 03m

1 stop

09:30 - 21:34

LHR

GTF

19h 04m

2 stops

£972United Airlines

Thu, 16 Jul - Wed, 22 Jul

14:37 - 12:25

GTF

LHR

14h 48m

1 stop

11:25 - 21:34

LHR

GTF

17h 09m

1 stop

£1,074United Airlines

Thu, 16 Jul - Wed, 22 Jul

13:22 - 17:40

GTF

LHR

21h 18m

3 stops

10:20 - 12:40

LHR

GTF

33h 20m

3 stops

£1,994Multiple Airlines

Sun, 7 Jun - Sun, 14 Jun

05:30 - 13:35

GTF

LHR

25h 05m

3 stops

10:20 - 12:27

LHR

GTF

33h 07m

3 stops

£3,428Multiple Airlines

Fri, 9 Oct - Sat, 17 Oct

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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

9 Oct

GTF14:25Great Falls

12h 15m

1 stop

LHR09:40London Heathrow

17 Oct

LHR07:45London Heathrow

20h 36m

2 stops

GTF21:21Great Falls

£748

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

£779

United Airlines

7 Jun

GTF06:15Great Falls

20h 25m

1 stop

LHR09:40London Heathrow

14 Jun

LHR09:30London Heathrow

43h 04m

2 stops

GTF21:34Great Falls

£954

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

Fri 9/10

14:25-09:40

1 stop12h 15m

London Heathrow

Sat 17/10

07:45-21:21

2 stops20h 36m

£748

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

£779

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

£789

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

£954

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

£957

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

£969

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 16/7

14:37-09:40

1 stop12h 03m

London Heathrow

Wed 22/7

09:30-21:34

2 stops19h 04m

£972

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 16/7

14:37-12:25

1 stop14h 48m

London Heathrow

Wed 22/7

11:25-21:34

1 stop17h 09m

£1,074

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 7/6

13:22-17:40

3 stops21h 18m

London Heathrow

Sun 14/6

10:20-12:40

3 stops33h 20m

£1,994

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 9/10

05:30-13:35

3 stops25h 05m

London Heathrow

Sat 17/10

10:20-12:27

3 stops33h 07m

£3,428

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

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 Heathrow Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a Great Falls to London Heathrow Airport flight.

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.

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Slough

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Ilford

Canterbury

Guildford

Hayes

Poole

Chelmsford

Folkestone

Dover

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.