Find flights
When to book
FAQs

Cheap flights from Great Falls to London from £564

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LON
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Great Falls to London

Enter your travel dates to find the best prices.

Cheapest flights from Great Falls to London
Explore the most affordable flight options available from Great Falls to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2026.

Wed 11/1106:15
GTF
-
LHR
2 stops17h 25m
United Airlines
Fri 13/1106:35
LHR
-
GTF
2 stops22h 55m
United Airlines
Deal found 7/6£564
Sun 6/1214:25
GTF
-
LHR
2 stops37h 40m
United Airlines
Wed 9/1207:30
LHR
-
GTF
2 stops20h 50m
United Airlines
Deal found 11/6£575
Sun 6/1216:55
GTF
-
LHR
1 stop12h 25m
Alaska Airlines
Wed 9/1214:45
LHR
-
GTF
1 stop32h 28m
Alaska Airlines
Deal found 9/6£662
Thu 27/806:15
GTF
-
LHR
1 stop20h 25m
United Airlines
Sat 5/906:55
LHR
-
GTF
2 stops21h 17m
United Airlines
Deal found 11/6£774
Wed 12/806:15
GTF
-
LHR
1 stop20h 25m
United Airlines
Sun 16/809:30
LHR
-
GTF
2 stops42h 42m
United Airlines
Deal found 9/6£798

Find flight deals from Great Falls to London

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 June 2026.

Round-trip from

£575
United Airlines
  • United Airlines
  • 6/12-9/12
  • 4 total stops
  • 58h 30m total
  • Great Falls to London
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 13 June 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

Sun 6/12

14:25-11:05

2 stops37h 40m

London Heathrow

Wed 9/12

07:30-21:20

2 stops20h 50m

£575
Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/11

14:25-09:40

1 stop12h 15m

London Heathrow

Fri 13/11

06:35-22:30

2 stops22h 55m

£622

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 6/12

16:55-12:20

1 stop12h 25m

London Heathrow

Wed 9/12

14:45-16:13

1 stop32h 28m

£662

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 27/8

06:15-06:55

2 stops17h 40m

London Heathrow

Sat 5/9

06:55-21:12

2 stops21h 17m

£778

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 12/8

06:15-09:40

1 stop20h 25m

London Heathrow

Sun 16/8

09:30-21:12

2 stops42h 42m

£798

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Sorted by cheapest first

Best time to book a flight from Great Falls to London

Have a flexible travel schedule? Discover the best time to fly to London from Great Falls with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Great Falls to London
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Great Falls to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Great Falls to London?

    Great Falls (GTF), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Great Falls to London. 0 airlines have flights from Great Falls to London on a regular basis. Booking flights from Great Falls to London should not be difficult; the airport handles an average of 0 outbound flights to London per day.

  • How long is the flight from Great Falls to London?

    United Airlines can get you from Great Falls to London in just under 37h 40m. Your travel time can differ by up to . Great Falls and London are separated by a distance of 4472 mi.

  • Can I find deals for flights from Great Falls to London that include hotel bookings?

    Yes. In addition to deals on Great Falls to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to London.

  • Can I find deals for business class flights from Great Falls to London?

    Yes. Cheapflights offers flight deals from Great Falls to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Ipswich
Guildford
Romford
Borehamwood
Folkestone
Southall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Great Falls to London?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from Great Falls today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Great Falls to London?

Cheapflights simply makes it quick and affordable to book flights from Great Falls to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Great Falls to London with no change fees?

Yes, we can. To see specific flights from Great Falls to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Great Falls to London become cheaper?

Yes! Start tracking prices for Great Falls to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.