How long is the flight from Great Falls to London?

Alaska Airlines, KLM, and Delta can get you from Great Falls to London in just under 12h 21m. Your travel time can differ by up to 6h 56m. Great Falls and London are separated by a distance of 4472 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from GTF to LON?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Great Falls to London as you normally would.

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.

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.

£560+ Cheap Flights from Great Falls to London

Cheap flight deals from Great Falls to London

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

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 14 September 2026.

Tue 10/1116:59 -

1 stop12h 21m

Fri 13/1114:45 -

1 stop32h 34m

Deal found 10/9£560

Tue 3/1105:40 -

2 stops18h 25m

Tue 17/1109:50 -

2 stops19h 56m

Deal found 13/9£577

Tue 3/1113:18 -

2 stops34h 07m

Wed 18/1116:00 -

2 stops27h 41m

Deal found 13/9£580

Fri 6/1113:18 -

1 stop13h 42m

Mon 16/1120:25 -

2 stops28h 14m

Deal found 13/9£591

Tue 3/1113:18 -

2 stops17h 27m

Mon 16/1117:35 -

2 stops31h 04m

Deal found 13/9£592

Thu 5/1105:40 -

2 stops18h 25m

Mon 16/1117:50 -

2 stops30h 49m

Deal found 13/9£594

Wed 4/1113:18 -

1 stop13h 42m

Sun 15/1110:45 -

1 stop13h 54m

Deal found 13/9£610

Thu 5/1105:40 -

2 stops18h 25m

Thu 12/1109:50 -

2 stops19h 56m

Deal found 13/9£628

Fri 23/1013:18 -

1 stop13h 42m

Fri 30/1020:10 -

2 stops22h 28m

Deal found 9/9£628

Thu 5/1105:40 -

2 stops18h 25m

Sun 15/1120:25 -

2 stops28h 14m

Deal found 13/9£631

Thu 5/1105:40 -

2 stops18h 25m

Sat 14/1106:20 -

2 stops18h 19m

Deal found 13/9£631

Fri 6/1113:18 -

1 stop13h 42m

Sun 15/1110:45 -

1 stop13h 54m

Deal found 13/9£633

Find flight deals from Great Falls to London

Round-trip from	£560

Alaska Airlines
10/11-13/11
2 total stops
44h 55m total
Great Falls to London

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Cheapflights Fare Finder

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 Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 10/11

16:59-12:20

1 stop12h 21m

London Heathrow

Fri 13/11

14:45-16:19

1 stop32h 34m

£560

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

05:40-07:05

2 stops18h 25m

London Heathrow

Tue 17/11

09:50-22:46

2 stops19h 56m

£577

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 23/10

13:18-15:35

2 stops19h 17m

London Heathrow

Fri 30/10

20:10-22:40

2 stops32h 30m

£628

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 23/10

13:18-10:00

1 stop13h 42m

London Heathrow

Fri 30/10

20:10-12:38

2 stops22h 28m

£628

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 6/11

13:18-10:00

1 stop13h 42m

London Heathrow

Sun 15/11

10:45-17:39

1 stop13h 54m

£633

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 6/11

14:45-09:40

1 stop11h 55m

London Heathrow

Tue 17/11

11:35-13:49

1 stop33h 14m

£662

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 4/11

14:45-09:40

1 stop11h 55m

London Heathrow

Wed 18/11

11:35-13:49

1 stop33h 14m

£662

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 4/11

14:45-07:10

2 stops33h 25m

London Heathrow

Sat 14/11

11:35-13:49

1 stop33h 14m

£665

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Fri 23/10

06:15-06:30

2 stops17h 15m

London Heathrow

Fri 30/10

13:00-13:49

3 stops30h 49m

£995

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 8/11

14:45-09:40

1 stop11h 55m

London Heathrow

Fri 13/11

11:35-21:38

1 stop17h 03m

£1,013

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 11 resultsSorted 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.

GTF-LON

GTF-LHR

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

GTF-LON

GTF-LHR

No data available for this route at this time. Please check back soon.

Related info for your journey

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?
Alaska Airlines, KLM, and Delta can get you from Great Falls to London in just under 12h 21m. Your travel time can differ by up to 6h 56m. 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

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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?

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Cheap flights from Great Falls to London from £560

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Great Falls to London

Cheapest flights from Great Falls to LondonExplore 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 14 September 2026.

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 14 September 2026.

Best flights from Great Falls to LondonDiscover carefully curated flight deals from Great Falls to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Discover carefully curated flight deals from Great Falls to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Last-minute flights from Great Falls to LondonDiscover last-minute flight deals from Great Falls to London. Data last updated 14 September 2026 and is based on user searches.

Discover last-minute flight deals from Great Falls to London. Data last updated 14 September 2026 and is based on user searches.

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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.

Cheapflights Insights

Related info for your journey

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

How long is the flight from Great Falls to London?

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

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

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

Travelling to a place near London?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Great Falls to London

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Complete your trip

Complete your trip to London by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Great Falls to London by cabin class

Find flights from Great Falls to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 14 September 2026.

Great Falls and London flights

Browse other Great Falls and London flight options. Last updated on 14 September 2026.

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

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

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

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

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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 14 September 2026.

Best flights from Great Falls to London
Discover carefully curated flight deals from Great Falls to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Last-minute flights from Great Falls to London
Discover last-minute flight deals from Great Falls to London. Data last updated 14 September 2026 and is based on user searches.