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Cheap flights from Great Falls to London from £566

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LON
26 Aug — 2 Sep1
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 27 July 2026.

Mon 9/1106:30
GTF
-
LHR
2 stops17h 40m
United Airlines
Wed 11/1106:35
LHR
-
GTF
2 stops22h 03m
United Airlines
Deal found 26/7£566
Mon 9/1116:57
GTF
-
LHR
1 stop12h 23m
Alaska Airlines
Wed 11/1114:45
LHR
-
GTF
1 stop32h 32m
Alaska Airlines
Deal found 26/7£666
Tue 15/913:15
GTF
-
LHR
1 stop14h 45m
Delta
Wed 30/906:30
LHR
-
GTF
2 stops18h 11m
Delta
Deal found 25/7£701
Mon 24/806:15
GTF
-
LHR
1 stop23h 10m
United Airlines
Mon 31/813:35
LHR
-
GTF
2 stops38h 37m
United Airlines
Deal found 25/7£711
Tue 15/917:19
GTF
-
LHR
1 stop14h 46m
Alaska Airlines
Wed 30/917:00
LHR
-
GTF
1 stop30h 39m
Alaska Airlines
Deal found 25/7£713

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 27 July 2026.

Round-trip from

£566
United Airlines
  • United Airlines
  • 9/11-11/11
  • 4 total stops
  • 39h 43m 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 27 July 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
Fastest return journey

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/11

06:30-07:10

2 stops17h 40m

London Heathrow

Wed 11/11

06:35-21:38

2 stops22h 03m

£566

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 5/1

16:55-12:20

1 stop12h 25m

London Heathrow

Tue 12/1

14:45-16:13

1 stop32h 28m

£666

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/11

16:57-12:20

1 stop12h 23m

London Heathrow

Wed 11/11

14:45-16:17

1 stop32h 32m

£666

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 6/1

16:55-12:20

1 stop12h 25m

London Heathrow

Wed 13/1

14:45-16:13

1 stop32h 28m

£668

Flights are sorted by cheapest return flights first.

Deals found on 25/7

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 17h 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
Luton
Gatwick
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Watford
Southend-on-Sea
Enfield
Kingston upon Thames
Southall
Aylesbury
Dover
Romford

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

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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.

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