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Cheap flights from Great Falls to London from £459

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 1/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
18:20 - 08:05
GTF
-
LHR
30h 45m
2 stops
Delta Logo
06:20 - 16:42
LHR
-
GTF
17h 22m
2 stops
£459Delta
Sun, 1 Mar - Sun, 8 Mar
Scandinavian Airlines Logo
13:12 - 10:00
GTF
-
LHR
13h 48m
1 stop
Scandinavian Airlines Logo
10:45 - 12:30
LHR
-
GTF
32h 45m
1 stop
£473Scandinavian Airlines
Wed, 11 Feb - Sun, 22 Feb
Scandinavian Airlines Logo
05:25 - 08:05
GTF
-
LHR
19h 40m
2 stops
Scandinavian Airlines Logo
16:50 - 12:30
LHR
-
GTF
26h 40m
2 stops
£476Scandinavian Airlines
Wed, 11 Feb - Sun, 22 Feb
Multiple Airlines Logo
17:59 - 06:50
GTF
-
LHR
29h 51m
2 stops
Multiple Airlines Logo
16:30 - 16:17
LHR
-
GTF
30h 47m
2 stops
£494Multiple Airlines
Wed, 11 Feb - Sun, 22 Feb
United Airlines Logo
06:10 - 09:40
GTF
-
LHR
20h 30m
1 stop
United Airlines Logo
11:35 - 21:33
LHR
-
GTF
16h 58m
1 stop
£529United Airlines
Wed, 11 Feb - Sun, 22 Feb
United Airlines Logo
06:10 - 09:40
GTF
-
LHR
20h 30m
1 stop
United Airlines Logo
10:30 - 21:33
LHR
-
GTF
42h 03m
2 stops
£530United Airlines
Wed, 11 Feb - Sun, 22 Feb
United Airlines Logo
14:30 - 12:20
GTF
-
LHR
14h 50m
1 stop
United Airlines Logo
14:50 - 21:17
LHR
-
GTF
13h 27m
1 stop
£541United Airlines
Wed, 1 Apr - Sat, 11 Apr
United Airlines Logo
06:15 - 11:35
GTF
-
LHR
22h 20m
2 stops
United Airlines Logo
14:50 - 21:17
LHR
-
GTF
13h 27m
1 stop
£544United Airlines
Wed, 1 Apr - Sat, 11 Apr
United Airlines Logo
06:25 - 09:40
GTF
-
LHR
20h 15m
1 stop
United Airlines Logo
11:35 - 21:11
LHR
-
GTF
15h 36m
1 stop
£594United Airlines
Sun, 1 Mar - Sun, 8 Mar
United Airlines Logo
06:15 - 11:35
GTF
-
LHR
22h 20m
2 stops
United Airlines Logo
10:50 - 13:31
LHR
-
GTF
33h 41m
2 stops
£659United Airlines
Wed, 1 Apr - Sat, 11 Apr

Scandinavian Airlines flights from Great Falls to London Heathrow Airport

Our best Scandinavian Airlines deals on Great Falls to London Heathrow Airport flight tickets
Scandinavian Airlines
11 Feb
GTF13:12Great Falls
13h 48m
1 stop
LHR10:00London Heathrow
22 Feb
LHR10:45London Heathrow
32h 45m
1 stop
GTF12:30Great Falls
£473
Scandinavian Airlines
11 Feb
GTF05:25Great Falls
19h 40m
2 stops
LHR08:05London Heathrow
22 Feb
LHR16:50London Heathrow
26h 40m
2 stops
GTF12:30Great Falls
£476

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
11 Feb
GTF06:10Great Falls
20h 30m
1 stop
LHR09:40London Heathrow
22 Feb
LHR11:35London Heathrow
16h 58m
1 stop
GTF21:33Great Falls
£529
United Airlines
11 Feb
GTF06:10Great Falls
20h 30m
1 stop
LHR09:40London Heathrow
22 Feb
LHR10:30London Heathrow
42h 03m
2 stops
GTF21:33Great Falls
£530
United Airlines
1 Apr
GTF14:30Great Falls
14h 50m
1 stop
LHR12:20London Heathrow
11 Apr
LHR14:50London Heathrow
13h 27m
1 stop
GTF21:17Great Falls
£541

momondo Fare Finder

 
Customise your flight search to find flights from Great Falls to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 16 January 2026.
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

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 1/3

18:20-08:05

2 stops30h 45m

London Heathrow

Sun 8/3

06:20-16:42

2 stops17h 22m

£459

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

13:12-10:00

1 stop13h 48m

London Heathrow

Sun 22/2

10:45-12:30

1 stop32h 45m

£473

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

05:25-08:05

2 stops19h 40m

London Heathrow

Sun 22/2

16:50-12:30

2 stops26h 40m

£476

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

17:59-06:50

2 stops29h 51m

London Heathrow

Sun 22/2

16:30-16:17

2 stops30h 47m

£494

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

06:10-09:40

1 stop20h 30m

London Heathrow

Sun 22/2

11:35-21:33

1 stop16h 58m

£529

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

06:10-09:40

1 stop20h 30m

London Heathrow

Sun 22/2

10:30-21:33

2 stops42h 03m

£530

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 1/4

14:30-12:20

1 stop14h 50m

London Heathrow

Sat 11/4

14:50-21:17

1 stop13h 27m

£541

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 1/4

06:15-11:35

2 stops22h 20m

London Heathrow

Sat 11/4

14:50-21:17

1 stop13h 27m

£544

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 1/3

06:25-09:40

1 stop20h 15m

London Heathrow

Sun 8/3

11:35-21:11

1 stop15h 36m

£594

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 1/4

06:15-11:35

2 stops22h 20m

London Heathrow

Sat 11/4

10:50-13:31

2 stops33h 41m

£659

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to London from

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 11m

Direct flights

None
The fastest flight from Great Falls to London Heathrow Airport takes 12h 11m
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 12h 11m, 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Luton
Milton Keynes
Gatwick
Maidstone
Slough
Northampton
Stratford-upon-Avon
Swindon
Southend-on-Sea
Canterbury
Ipswich
Ilford
Poole
Guildford
Chelmsford
Hayes
Swanage
Dover
Worthing

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.

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