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.

£557 Cheap Flights from Great Falls to London Heathrow Airport 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

Cheap return flights

Enter your travel dates to find the best prices.

14:35 - 10:00

GTF

LHR

36h 25m

2 stops

09:00 - 13:34

LHR

GTF

35h 34m

2 stops

£557United Airlines

Sat, 2 May - Tue, 12 May

06:15 - 16:40

GTF

LHR

27h 25m

2 stops

07:25 - 13:34

LHR

GTF

37h 09m

2 stops

£569United Airlines

Wed, 22 Apr - Wed, 6 May

14:30 - 12:20

GTF

LHR

14h 50m

1 stop

07:25 - 21:18

LHR

GTF

20h 53m

2 stops

£572United Airlines

Wed, 22 Apr - Wed, 6 May

14:30 - 09:40

GTF

LHR

12h 10m

1 stop

09:30 - 21:18

LHR

GTF

18h 48m

2 stops

£580United Airlines

Tue, 14 Apr - Wed, 6 May

18:15 - 06:50

GTF

LHR

29h 35m

2 stops

09:50 - 17:35

LHR

GTF

14h 45m

1 stop

£581Multiple Airlines

Sat, 2 May - Tue, 12 May

14:35 - 06:35

GTF

LHR

57h 00m

2 stops

06:55 - 13:34

LHR

GTF

37h 39m

2 stops

£589United Airlines

Fri, 1 May - Wed, 13 May

14:35 - 12:20

GTF

LHR

14h 45m

1 stop

10:50 - 13:34

LHR

GTF

33h 44m

2 stops

£592United Airlines

Fri, 1 May - Wed, 13 May

14:35 - 10:00

GTF

LHR

36h 25m

2 stops

10:50 - 13:34

LHR

GTF

33h 44m

2 stops

£592United Airlines

Sat, 2 May - Tue, 12 May

06:15 - 09:40

GTF

LHR

20h 25m

1 stop

14:05 - 21:18

LHR

GTF

38h 13m

2 stops

£597United Airlines

Tue, 28 Apr - Wed, 13 May

06:15 - 16:40

GTF

LHR

27h 25m

2 stops

17:40 - 21:18

LHR

GTF

34h 38m

2 stops

£598United Airlines

Wed, 22 Apr - Fri, 8 May

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

2 May

GTF14:35Great Falls

36h 25m

2 stops

LHR10:00London Heathrow

12 May

LHR09:00London Heathrow

35h 34m

2 stops

GTF13:34Great Falls

£557

United Airlines

22 Apr

GTF06:15Great Falls

27h 25m

2 stops

LHR16:40London Heathrow

6 May

LHR07:25London Heathrow

37h 09m

2 stops

GTF13:34Great Falls

£569

United Airlines

22 Apr

GTF14:30Great Falls

14h 50m

1 stop

LHR12:20London Heathrow

6 May

LHR07:25London Heathrow

20h 53m

2 stops

GTF21:18Great Falls

£572

Delta flights from Great Falls to London Heathrow Airport

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

Delta

25 Apr

GTF18:20Great Falls

29h 50m

2 stops

LHR07:10London Heathrow

14 May

LHR11:45London Heathrow

36h 54m

2 stops

GTF17:39Great Falls

£647

Delta

25 Apr

GTF18:20Great Falls

29h 50m

2 stops

LHR07:10London Heathrow

13 May

LHR06:15London Heathrow

23h 11m

2 stops

GTF22:26Great Falls

£652

Delta

25 Apr

GTF18:20Great Falls

29h 00m

2 stops

LHR06:20London Heathrow

12 May

LHR17:35London Heathrow

31h 04m

2 stops

GTF17:39Great Falls

£662

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

Sat 2/5

14:35-10:00

2 stops36h 25m

London Heathrow

Tue 12/5

09:00-13:34

2 stops35h 34m

£557

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 22/4

06:15-16:40

2 stops27h 25m

London Heathrow

Wed 6/5

07:25-13:34

2 stops37h 09m

£569

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 22/4

14:30-12:20

1 stop14h 50m

London Heathrow

Wed 6/5

07:25-21:18

2 stops20h 53m

£572

Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 14/4

14:30-09:40

1 stop12h 10m

London Heathrow

Wed 6/5

09:30-21:18

2 stops18h 48m

£580

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 2/5

18:15-06:50

2 stops29h 35m

London Heathrow

Tue 12/5

09:50-17:35

1 stop14h 45m

£581

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 1/5

14:35-06:35

2 stops57h 00m

London Heathrow

Wed 13/5

06:55-13:34

2 stops37h 39m

£589

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 1/5

14:35-12:20

1 stop14h 45m

London Heathrow

Wed 13/5

10:50-13:34

2 stops33h 44m

£592

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 2/5

14:35-10:00

2 stops36h 25m

London Heathrow

Tue 12/5

10:50-13:34

2 stops33h 44m

£592

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 28/4

06:15-09:40

1 stop20h 25m

London Heathrow

Wed 13/5

14:05-21:18

2 stops38h 13m

£597

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 22/4

06:15-16:40

2 stops27h 25m

London Heathrow

Fri 8/5

17:40-21:18

2 stops34h 38m

£598

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	14h 45m
Direct flights	None

The fastest flight from Great Falls to London Heathrow Airport takes 14h 45m

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

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 14h 45m, 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.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Northampton

Stratford-upon-Avon

Swindon

Southend-on-Sea

Canterbury

Ipswich

Ilford

Wembley

Poole

Guildford

Chelmsford

Hayes

Dover

Folkestone

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.