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Cheap flights from Great Falls to London from £294

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/3. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LON
8 Mar — 15 Mar1
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 6 February 2026.

Sat 7/314:30
GTF
-
LHR
1 stop12h 10m
United Airlines
Wed 18/311:10
LHR
-
GTF
2 stops40h 01m
United Airlines
Deal found 4/2£466
Wed 4/313:15
GTF
-
LHR
1 stop13h 45m
Delta
Wed 18/311:45
LHR
-
GTF
2 stops35h 57m
Delta
Deal found 4/2£467
Wed 8/414:30
GTF
-
LHR
1 stop14h 50m
United Airlines
Wed 22/409:00
LHR
-
GTF
2 stops35h 31m
United Airlines
Deal found 4/2£478
Tue 28/413:09
GTF
-
LHR
1 stop14h 51m
Scandinavian Airlines
Wed 13/511:45
LHR
-
GTF
2 stops17h 41m
Scandinavian Airlines
Deal found 4/2£478
Sun 5/418:22
GTF
-
LHR
1 stop32h 38m
Delta
Tue 21/406:15
LHR
-
GTF
2 stops23h 14m
Delta
Deal found 4/2£483
Sat 25/413:09
GTF
-
LHR
2 stops36h 41m
Delta
Wed 13/509:55
LHR
-
GTF
2 stops19h 31m
Delta
Deal found 4/2£485
Sun 5/405:30
GTF
-
LHR
2 stops23h 40m
Delta
Wed 22/406:15
LHR
-
GTF
2 stops23h 14m
Delta
Deal found 4/2£487
Sat 7/306:15
GTF
-
LHR
2 stops22h 45m
United Airlines
Tue 17/311:35
LHR
-
GTF
1 stop31h 58m
United Airlines
Deal found 4/2£487
Tue 10/313:05
GTF
-
LHR
2 stops21h 45m
Delta
Tue 17/311:20
LHR
-
GTF
2 stops17h 10m
Delta
Deal found 4/2£490
Sun 5/418:22
GTF
-
LHR
1 stop32h 38m
Delta
Mon 20/417:35
LHR
-
GTF
2 stops31h 05m
Delta
Deal found 4/2£492

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 6 February 2026.

Round-trip from

£466

One-way from

£294
United Airlines
  • United Airlines
  • 7/3-18/3
  • 3 total stops
  • 52h 11m total
  • Great Falls to London
Search Deals
United Airlines
  • United Airlines
  • 22/3
  • 1 total stop
  • 13h 10m 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 6 February 2026.
Use the filters below to find and compare flights from Great Falls to London that are best for you.

Fly from

Great Falls

Fly to

London

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/3

05:30-10:00

1 stop22h 30m

London Heathrow

Mon 16/3

11:45-17:42

2 stops35h 57m

£467

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 8/4

14:30-12:20

1 stop14h 50m

London Heathrow

Wed 22/4

09:00-13:31

2 stops35h 31m

£478

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 5/4

18:22-10:00

1 stop32h 38m

London Heathrow

Thu 23/4

06:15-17:40

2 stops18h 25m

£483

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 6/4

05:30-12:10

2 stops23h 40m

London Heathrow

Tue 21/4

06:15-22:29

2 stops23h 14m

£487

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 4/3

06:25-09:40

1 stop20h 15m

London Heathrow

Tue 17/3

11:35-13:33

1 stop31h 58m

£487

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 5/3

14:30-09:40

1 stop12h 10m

London Heathrow

Fri 20/3

10:00-13:33

2 stops33h 33m

£490

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 5/3

13:15-16:50

2 stops20h 35m

London Heathrow

Sun 15/3

17:20-12:24

2 stops25h 04m

£490

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 4/3

13:15-16:50

2 stops20h 35m

London Heathrow

Sun 15/3

17:20-12:24

2 stops25h 04m

£490

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 11/4

18:22-10:40

2 stops33h 18m

London Heathrow

Wed 22/4

06:15-17:40

2 stops18h 25m

£490

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 8/4

05:30-10:00

1 stop21h 30m

London Heathrow

Mon 20/4

17:35-17:40

2 stops31h 05m

£492

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 14 results
1
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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?

    Delta and United Airlines can get you from Great Falls to London in just under 14h 50m. Your travel time can differ by up to 7h 40m. Great Falls and London are separated by a distance of 4472 mi. This flight may include one or multiple stops.

  • 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
Milton Keynes
Croydon
Luton
Wembley
Gatwick
Slough
Ilford
Hounslow
Brentford
Hayes
Colchester
Watford
Guildford
Bedford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames
Romford
Ipswich

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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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