Cheap flights from Great Falls to London from £710

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 1/9. 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
1 adult, Economy, 0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
KLM Logo
13:10 - 15:35
GTF
-
LHR
19h 25m
2 stops
KLM Logo
06:30 - 22:44
LHR
-
GTF
23h 14m
2 stops
£710KLM
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
13:10 - 15:35
GTF
-
LHR
19h 25m
2 stops
Multiple Airlines Logo
06:15 - 17:39
LHR
-
GTF
18h 24m
2 stops
£715Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
Multiple Airlines Logo
13:10 - 15:35
GTF
-
LHR
19h 25m
2 stops
Multiple Airlines Logo
06:15 - 17:39
LHR
-
GTF
18h 24m
2 stops
£716Multiple Airlines
Tue, 15 Sep - Tue, 22 Sep
KLM Logo
13:10 - 15:35
GTF
-
LHR
19h 25m
2 stops
KLM Logo
10:55 - 17:39
LHR
-
GTF
13h 44m
1 stop
£732KLM
Tue, 15 Sep - Tue, 22 Sep
Delta Logo
18:20 - 10:00
GTF
-
LHR
32h 40m
1 stop
Delta Logo
06:30 - 22:29
LHR
-
GTF
22h 59m
2 stops
£775Delta
Sun, 26 Apr - Tue, 5 May
KLM Logo
13:09 - 13:05
GTF
-
LHR
16h 56m
2 stops
KLM Logo
06:30 - 17:40
LHR
-
GTF
18h 10m
2 stops
£778KLM
Wed, 22 Apr - Wed, 6 May
Delta Logo
18:20 - 10:00
GTF
-
LHR
32h 40m
1 stop
Delta Logo
06:15 - 17:39
LHR
-
GTF
18h 24m
2 stops
£781Delta
Sun, 26 Apr - Tue, 12 May
Multiple Airlines Logo
13:09 - 15:35
GTF
-
LHR
19h 26m
2 stops
Multiple Airlines Logo
06:15 - 17:39
LHR
-
GTF
18h 24m
2 stops
£784Multiple Airlines
Mon, 27 Apr - Tue, 12 May
Delta Logo
18:20 - 10:00
GTF
-
LHR
32h 40m
1 stop
Delta Logo
15:20 - 17:40
LHR
-
GTF
33h 20m
2 stops
£790Delta
Sun, 26 Apr - Mon, 4 May
Delta Logo
05:30 - 13:45
GTF
-
LHR
25h 15m
2 stops
Delta Logo
15:20 - 17:40
LHR
-
GTF
33h 20m
2 stops
£793Delta
Mon, 20 Apr - Mon, 4 May

KLM flights from Great Falls to London

Our best KLM deals on Great Falls to London flight tickets
KLM
1 Sept
GTF13:10Great Falls
19h 25m
2 stops
LHR15:35London Heathrow
8 Sept
LHR06:30London Heathrow
23h 14m
2 stops
GTF22:44Great Falls
£710
KLM
15 Sept
GTF13:10Great Falls
19h 25m
2 stops
LHR15:35London Heathrow
22 Sept
LHR10:55London Heathrow
13h 44m
1 stop
GTF17:39Great Falls
£732
KLM
22 Apr
GTF13:09Great Falls
16h 56m
2 stops
LHR13:05London Heathrow
6 May
LHR06:30London Heathrow
18h 10m
2 stops
GTF17:40Great Falls
£778

United Airlines flights from Great Falls to London

Our best United Airlines deals on Great Falls to London flight tickets
United Airlines
26 Apr
GTF14:30Great Falls
15h 05m
1 stop
LHR12:35London Heathrow
8 May
LHR14:50London Heathrow
13h 28m
1 stop
GTF21:18Great Falls
£830
United Airlines
15 May
GTF14:35Great Falls
14h 50m
1 stop
LHR12:25London Heathrow
22 May
LHR11:25London Heathrow
17h 09m
1 stop
GTF21:34Great Falls
£843
United Airlines
15 May
GTF14:35Great Falls
14h 50m
1 stop
LHR12:25London Heathrow
22 May
LHR09:30London Heathrow
19h 04m
2 stops
GTF21:34Great Falls
£846

momondo Fare Finder

 
Customise your flight search to find flights from Great Falls to London 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 5 April 2026.
Use the filters below to find and compare flights from Great Falls to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 1/9

13:10-15:35

2 stops19h 25m

London Heathrow

Tue 8/9

06:30-22:44

2 stops23h 14m

£710

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 15/9

13:10-15:35

2 stops19h 25m

London Heathrow

Tue 22/9

06:15-17:39

2 stops18h 24m

£715

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 15/9

13:10-15:35

2 stops19h 25m

London Heathrow

Tue 22/9

06:15-17:39

2 stops18h 24m

£716
Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 15/9

13:10-15:35

2 stops19h 25m

London Heathrow

Tue 22/9

10:55-17:39

1 stop13h 44m

£732

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 26/4

18:20-10:00

1 stop32h 40m

London Heathrow

Tue 5/5

06:30-22:29

2 stops22h 59m

£775

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 22/4

13:09-13:05

2 stops16h 56m

London Heathrow

Wed 6/5

06:30-17:40

2 stops18h 10m

£778

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 26/4

18:20-10:00

1 stop32h 40m

London Heathrow

Tue 12/5

06:15-17:39

2 stops18h 24m

£781

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 27/4

13:09-15:35

2 stops19h 26m

London Heathrow

Tue 12/5

06:15-17:39

2 stops18h 24m

£784

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 26/4

18:20-10:00

1 stop32h 40m

London Heathrow

Mon 4/5

15:20-17:40

2 stops33h 20m

£790

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 20/4

05:30-13:45

2 stops25h 15m

London Heathrow

Mon 4/5

15:20-17:40

2 stops33h 20m

£793

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

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 flights?

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

When to book flights from Great Falls to London

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Great Falls to London (GTF to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to London

Fastest flight time

14h 50m

Direct flights

None
The fastest flight from Great Falls to London takes 14h 50m
There are no direct flights from Great Falls to London. There are no popular flight routes from Great Falls to London.

Frequently asked questions about flying from Great Falls to London

  • How far is Great Falls to London by plane?

    The straight-line distance from Great Falls to London is 4477.2 mi. Flights usually cover this in 14h 50m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Great Falls Airport to London?

    Prices for flights from Great Falls Airport to London are refreshed on a daily basis.

  • How old do you have to be to fly from Great Falls Airport to London?

    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.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable 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
Gatwick
Slough
Maidstone
Southend-on-Sea
Wembley
Ipswich
Canterbury
Ilford
Guildford
Hayes
Chelmsford
Dover
Folkestone
Ramsgate
Bedford
Chichester
Worthing

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Great Falls to London. momondo saves you time and could save you money on your trip.

Can I find flights from Great Falls to London with flexible booking policies on momondo?

Yes. All flights to London from Great Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Great Falls to London?

Once all potential Great Falls to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Great Falls to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Great Falls to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London trip

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1 adult
Tue 5/5
Tue 12/5

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London