How long is the flight from Great Falls to London?

United Airlines can get you from Great Falls to London in just under 27h 35m. Your travel time can differ by up to . Great Falls and London are separated by a distance of 4472 mi.

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.

£580+ Cheap Flights from Great Falls to London

Cheap flight deals from Great Falls to London

Enter your travel dates to find the best prices.

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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 30 October 2026.

Wed 9/1206:30 -

1 stop20h 10m

Wed 16/1207:40 -

2 stops20h 33m

Deal found 25/10£737

Sun 13/1214:47 -

1 stop11h 53m

Sun 20/1213:00 -

2 stops39h 41m

Deal found 29/10£897

Wed 9/1216:51 -

1 stop12h 19m

Wed 16/1214:55 -

1 stop32h 37m

Deal found 25/10£923

Sun 13/1214:47 -

1 stop11h 53m

Sun 20/1211:35 -

1 stop33h 06m

Deal found 29/10£1,221

Fri 6/1106:30 -

1 stop20h 10m

Tue 5/111:35 -

1 stop17h 07m

Deal found 29/10£6,587

Fri 6/1114:45 -

1 stop11h 55m

Tue 5/118:00 -

2 stops26h 36m

Deal found 29/10£6,593

Fri 6/1106:30 -

2 stops16h 25m

Tue 5/118:00 -

2 stops26h 36m

Deal found 29/10£6,623

Find flight deals from Great Falls to London

Round-trip from	£580

United Airlines
1/3-3/3
4 total stops
68h 59m total
Great Falls to London

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Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 1/3

06:30-17:05

2 stops27h 35m

London Heathrow

Wed 3/3

11:10-21:34

2 stops41h 24m

£580

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sat 20/3

14:25-07:10

2 stops34h 45m

London Heathrow

Tue 30/3

09:00-22:30

2 stops20h 30m

£676

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 9/12

06:30-09:40

1 stop20h 10m

London Heathrow

Wed 16/12

07:40-21:13

2 stops20h 33m

£737

Flights are sorted by cheapest return flights first.

Deals found on 25/10

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.

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.

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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?
United Airlines can get you from Great Falls to London in just under 27h 35m. 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.

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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?

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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 £580

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/3. 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 30 October 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 30 October 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 30 October 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 30 October 2026.

Last-minute flights from Great Falls to LondonDiscover last-minute flight deals from Great Falls to London. Data last updated 30 October 2026 and is based on user searches.

Discover last-minute flight deals from Great Falls to London. Data last updated 30 October 2026 and is based on user searches.

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Best time to book a flight from Great Falls to London

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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

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Search flights from Great Falls to London by cabin class

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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 30 October 2026.

Great Falls and London flights

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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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Travel Smart

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 30 October 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 30 October 2026.

Last-minute flights from Great Falls to London
Discover last-minute flight deals from Great Falls to London. Data last updated 30 October 2026 and is based on user searches.