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Cheap flights from Great Falls to London from £364

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to London departing on 29/10. 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

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KLM Logo
13:08 - 10:00GTF-LHR
14h 52m1 stop
KLM Logo
20:25 - 17:29LHR-GTF
28h 04m2 stops
£482KLM
Find Deal
Wed, 29 Oct - Sun, 2 Nov
KLM Logo
13:08 - 10:30GTF-LHR
15h 22m2 stops
KLM Logo
17:50 - 17:29LHR-GTF
30h 39m2 stops
£486KLM
Find Deal
Wed, 29 Oct - Sun, 2 Nov
KLM Logo
13:08 - 10:00GTF-LHR
14h 52m1 stop
KLM Logo
10:45 - 17:29LHR-GTF
13h 44m1 stop
£487KLM
Find Deal
Wed, 29 Oct - Sun, 2 Nov
United Airlines Logo
14:30 - 11:15GTF-LHR
14h 45m2 stops
United Airlines Logo
16:20 - 13:33LHR-GTF
28h 13m3 stops
£528United Airlines
Find Deal
Wed, 29 Oct - Sun, 2 Nov
United Airlines Logo
14:30 - 09:40GTF-LHR
13h 10m1 stop
United Airlines Logo
06:35 - 21:33LHR-GTF
20h 58m2 stops
£545United Airlines
Find Deal
Mon, 16 Mar - Thu, 26 Mar
Multiple Airlines Logo
16:00 - 12:20GTF-LHR
14h 20m1 stop
Multiple Airlines Logo
14:55 - 15:20LHR-GTF
30h 25m1 stop
£567Multiple Airlines
Find Deal
Mon, 16 Mar - Thu, 26 Mar
United Airlines Logo
06:15 - 07:55GTF-LHR
19h 40m2 stops
United Airlines Logo
07:40 - 21:33LHR-GTF
19h 53m2 stops
£570United Airlines
Find Deal
Mon, 16 Mar - Thu, 26 Mar
Delta Logo
13:10 - 10:00GTF-LHR
14h 50m1 stop
Delta Logo
10:55 - 22:53LHR-GTF
18h 58m1 stop
£822Delta
Find Deal
Fri, 27 Mar - Tue, 31 Mar
Delta Logo
13:10 - 10:00GTF-LHR
14h 50m1 stop
Delta Logo
10:55 - 17:44LHR-GTF
13h 49m1 stop
£858Delta
Find Deal
Fri, 27 Mar - Tue, 31 Mar
Multiple Airlines Logo
10:20 - 12:40GTF-LHR
44h 20m3 stops
Multiple Airlines Logo
06:00 - 09:30LHR-GTF
33h 30m3 stops
£975Multiple Airlines
Find Deal
Mon, 16 Mar - Thu, 26 Mar

KLM flights from Great Falls to London Heathrow Airport

Our best KLM deals on Great Falls to London Heathrow Airport flight tickets
KLM
29 Oct
GTF13:08Great Falls
14h 52m
1 stop
LHR10:00London Heathrow
2 Nov
LHR20:25London Heathrow
28h 04m
2 stops
GTF17:29Great Falls
£482
Find similar
KLM
29 Oct
GTF13:08Great Falls
15h 22m
2 stops
LHR10:30London Heathrow
2 Nov
LHR17:50London Heathrow
30h 39m
2 stops
GTF17:29Great Falls
£486
Find similar
KLM
29 Oct
GTF13:08Great Falls
14h 52m
1 stop
LHR10:00London Heathrow
2 Nov
LHR10:45London Heathrow
13h 44m
1 stop
GTF17:29Great Falls
£487
Find similar

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
29 Oct
GTF14:30Great Falls
14h 45m
2 stops
LHR11:15London Heathrow
2 Nov
LHR16:20London Heathrow
28h 13m
3 stops
GTF13:33Great Falls
£528
Find similar
United Airlines
16 Mar
GTF14:30Great Falls
13h 10m
1 stop
LHR09:40London Heathrow
26 Mar
LHR06:35London Heathrow
20h 58m
2 stops
GTF21:33Great Falls
£545
Find similar
United Airlines
16 Mar
GTF06:15Great Falls
19h 40m
2 stops
LHR07:55London Heathrow
26 Mar
LHR07:40London Heathrow
19h 53m
2 stops
GTF21:33Great Falls
£570
Find similar

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 14 October 2025.
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

Wed 29/10

13:08-10:00

1 stop14h 52m

London Heathrow

Sun 2/11

20:25-17:29

2 stops28h 04m

£482

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

13:08-10:30

2 stops15h 22m

London Heathrow

Sun 2/11

17:50-17:29

2 stops30h 39m

£486

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

13:08-10:00

1 stop14h 52m

London Heathrow

Sun 2/11

10:45-17:29

1 stop13h 44m

£487

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 29/10

14:30-11:15

2 stops14h 45m

London Heathrow

Sun 2/11

16:20-13:33

3 stops28h 13m

£528

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

14:30-09:40

1 stop13h 10m

London Heathrow

Thu 26/3

06:35-21:33

2 stops20h 58m

£545

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

16:00-12:20

1 stop14h 20m

London Heathrow

Thu 26/3

14:55-15:20

1 stop30h 25m

£567

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

06:15-07:55

2 stops19h 40m

London Heathrow

Thu 26/3

07:40-21:33

2 stops19h 53m

£570

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 27/3

13:10-10:00

1 stop14h 50m

London Heathrow

Tue 31/3

10:55-22:53

1 stop18h 58m

£822

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 27/3

13:10-10:00

1 stop14h 50m

London Heathrow

Tue 31/3

10:55-17:44

1 stop13h 49m

£858

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 16/3

10:20-12:40

3 stops44h 20m

London Heathrow

Thu 26/3

06:00-09:30

3 stops33h 30m

£974

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

Direct flights

None
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 05m, 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
Milton Keynes
Luton
Maidstone
Gatwick
Northampton
Slough
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Poole
Swanage
Colchester
Dover
Hayes
Chelmsford

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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