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Cheap flights from Great Falls to the United Kingdom from £460

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 the United Kingdom departing on 29/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Great Falls to the United Kingdom

Cheap return flights

Delta Logo
05:40 - 09:50GTF-LHR
21h 10m1 stop
Delta Logo
06:15 - 17:29LHR-GTF
18h 14m2 stops
£460Delta
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Mon, 29 Sep - Wed, 8 Oct
Delta Logo
18:11 - 06:25GTF-LHR
29h 14m2 stops
Delta Logo
06:15 - 17:29LHR-GTF
18h 14m2 stops
£463Delta
Find Deal
Mon, 29 Sep - Wed, 8 Oct
Delta Logo
05:40 - 09:50GTF-LHR
21h 10m1 stop
Delta Logo
11:00 - 23:06LHR-GTF
19h 06m1 stop
£465Delta
Find Deal
Mon, 29 Sep - Wed, 8 Oct
KLM Logo
13:08 - 14:15GTF-LHR
18h 07m2 stops
KLM Logo
11:00 - 23:06LHR-GTF
19h 06m1 stop
£470KLM
Find Deal
Tue, 7 Oct - Wed, 15 Oct
KLM Logo
18:11 - 16:15GTF-LHR
15h 04m2 stops
KLM Logo
10:55 - 17:29LHR-GTF
13h 34m1 stop
£489KLM
Find Deal
Sun, 5 Oct - Tue, 14 Oct
United Airlines Logo
07:00 - 07:15GTF-LHR
17h 15m2 stops
United Airlines Logo
15:50 - 13:26LHR-GTF
28h 36m2 stops
£510United Airlines
Find Deal
Tue, 7 Oct - Wed, 15 Oct
United Airlines Logo
07:00 - 09:35GTF-LHR
19h 35m2 stops
United Airlines Logo
15:50 - 13:26LHR-GTF
28h 36m2 stops
£514United Airlines
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Sun, 5 Oct - Wed, 15 Oct
Logo
18:15 - 13:40GTF-LHR
12h 25m1 stop
Logo
09:50 - 17:35LHR-GTF
14h 45m1 stop
£554
Find Deal
Tue, 7 Oct - Wed, 15 Oct
Logo
18:15 - 13:40GTF-LHR
12h 25m1 stop
Logo
09:50 - 17:35LHR-GTF
14h 45m1 stop
£554
Find Deal
Tue, 7 Oct - Wed, 15 Oct
Alaska Airlines Logo
18:15 - 13:40GTF-LHR
12h 25m1 stop
Alaska Airlines Logo
09:50 - 17:35LHR-GTF
14h 45m1 stop
£904Alaska Airlines
Find Deal
Tue, 7 Oct - Mon, 13 Oct

KLM flights from Great Falls to United Kingdom

Our best KLM deals on Great Falls to United Kingdom flight tickets
KLM
7 Oct
GTF13:08Great Falls
18h 07m
2 stops
LHR14:15London Heathrow
15 Oct
LHR11:00London Heathrow
19h 06m
1 stop
GTF23:06Great Falls
£470
Find similar
KLM
5 Oct
GTF18:11Great Falls
15h 04m
2 stops
LHR16:15London Heathrow
14 Oct
LHR10:55London Heathrow
13h 34m
1 stop
GTF17:29Great Falls
£489
Find similar
KLM
26 Oct
GTF13:08Great Falls
15h 22m
2 stops
LHR10:30London Heathrow
2 Nov
LHR17:50London Heathrow
30h 39m
2 stops
GTF17:29Great Falls
£501
Find similar

United Airlines flights from Great Falls to United Kingdom

Our best United Airlines deals on Great Falls to United Kingdom flight tickets
United Airlines
7 Oct
GTF07:00Great Falls
17h 15m
2 stops
LHR07:15London Heathrow
15 Oct
LHR15:50London Heathrow
28h 36m
2 stops
GTF13:26Great Falls
£510
Find similar
United Airlines
5 Oct
GTF07:00Great Falls
19h 35m
2 stops
LHR09:35London Heathrow
15 Oct
LHR15:50London Heathrow
28h 36m
2 stops
GTF13:26Great Falls
£514
Find similar
United Airlines
6 Oct
GTF07:00Great Falls
18h 20m
2 stops
LHR08:20London Heathrow
16 Oct
LHR15:50London Heathrow
28h 36m
2 stops
GTF13:26Great Falls
£517
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Great Falls to United Kingdom 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 12 September 2025.
Use the filters below to find and compare flights from Great Falls to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

05:40-09:50

1 stop21h 10m

London Heathrow

Wed 8/10

06:15-17:29

2 stops18h 14m

£460

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

18:11-06:25

2 stops29h 14m

London Heathrow

Wed 8/10

06:15-17:29

2 stops18h 14m

£463

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 29/9

05:40-09:50

1 stop21h 10m

London Heathrow

Wed 8/10

11:00-23:06

1 stop19h 06m

£465

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 7/10

13:08-14:15

2 stops18h 07m

London Heathrow

Wed 15/10

11:00-23:06

1 stop19h 06m

£470

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 5/10

18:11-16:15

2 stops15h 04m

London Heathrow

Tue 14/10

10:55-17:29

1 stop13h 34m

£489

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 7/10

07:00-07:15

2 stops17h 15m

London Heathrow

Wed 15/10

15:50-13:26

2 stops28h 36m

£510

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 5/10

07:00-09:35

2 stops19h 35m

London Heathrow

Wed 15/10

15:50-13:26

2 stops28h 36m

£514

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 7/10

18:15-13:40

1 stop12h 25m

London Heathrow

Wed 15/10

09:50-17:35

1 stop14h 45m

£554

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 7/10

18:15-13:40

1 stop12h 25m

London Heathrow

Wed 15/10

09:50-17:35

1 stop14h 45m

£554

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 7/10

18:15-13:40

1 stop12h 25m

London Heathrow

Mon 13/10

09:50-17:35

1 stop14h 45m

£904

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Great Falls to United Kingdom

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 United Kingdom flights?

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

Cheap Great Falls to United Kingdom flight deals and tips

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

Direct flights

None
There are no direct flights from Great Falls to United Kingdom. There are no popular flight routes from Great Falls to United Kingdom.
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  • When did momondo last update prices for flights from Great Falls Airport to United Kingdom?

    Prices for flights from Great Falls Airport to United Kingdom are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents you'll need for your trip to United Kingdom 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 United Kingdom. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

Finding the right flight to United Kingdom from Great Falls is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

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

Flights from Great Falls to United Kingdom with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to United Kingdom from Great Falls. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to United Kingdom 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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