How long is the flight from Great Falls to London Heathrow Airport?

Airlines like Delta and United Airlines fly from Great Falls to London Heathrow Airport in about 13h 41m. The time it takes to get you to your destination can typically vary by up to 7h 39m. The distance between Great Falls and London Heathrow Airport is about 4472 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 LHR?

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 Heathrow Airport as you normally would.

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

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 Heathrow. 0 airlines have flights from Great Falls to London Heathrow on a regular basis. Booking flights from Great Falls to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

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

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

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

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

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

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

£732+ Cheap Flights from Great Falls to London Heathrow Airport

Cheap flight deals from Great Falls to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

Cheapest flights from Great Falls to Heathrow
Explore the most affordable flight options available from Great Falls to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Mon 7/1213:19 -

1 stop13h 41m

Mon 14/1208:55 -

2 stops44h 34m

Deal found 23/10£732

Wed 9/1206:30 -

1 stop20h 10m

Wed 16/1207:40 -

2 stops20h 33m

Deal found 25/10£736

Wed 4/1106:30 -

1 stop20h 10m

Wed 9/1206:35 -

2 stops45h 38m

Deal found 24/10£744

Tue 3/1105:40 -

2 stops19h 10m

Wed 9/1217:05 -

2 stops31h 34m

Deal found 24/10£747

Wed 4/1113:18 -

2 stops17h 27m

Tue 8/1217:05 -

2 stops31h 34m

Deal found 24/10£751

Mon 2/1106:30 -

1 stop20h 10m

Wed 9/1209:30 -

2 stops18h 43m

Deal found 24/10£752

Tue 3/1105:40 -

2 stops19h 10m

Thu 10/1206:20 -

2 stops18h 19m

Deal found 24/10£753

Wed 4/1113:18 -

2 stops17h 27m

Thu 10/1206:20 -

2 stops18h 19m

Deal found 24/10£756

Mon 2/1106:30 -

1 stop20h 10m

Fri 11/1218:00 -

2 stops34h 13m

Deal found 24/10£758

Mon 7/1216:51 -

1 stop12h 29m

Mon 14/1214:45 -

1 stop32h 26m

Deal found 23/10£761

Mon 2/1106:30 -

2 stops22h 30m

Thu 10/1215:00 -

2 stops37h 13m

Deal found 24/10£761

Sun 1/1106:30 -

2 stops20h 45m

Tue 8/1211:35 -

1 stop16h 38m

Deal found 24/10£762

Find flight deals from Great Falls to Heathrow

Round-trip from	£732

Delta
7/12-14/12
3 total stops
58h 15m total
Great Falls to London

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Use the filters below to find and compare flights from Great Falls to London Heathrow Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Mon 7/12

13:19-10:00

1 stop13h 41m

London Heathrow

Mon 14/12

08:55-22:29

2 stops44h 34m

£732

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Wed 9/12

06:30-10:50

2 stops21h 20m

London Heathrow

Wed 16/12

07:40-21:13

2 stops20h 33m

£736

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sun 1/11

14:45-10:50

2 stops37h 05m

London Heathrow

Fri 11/12

11:35-21:13

1 stop16h 38m

£762

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

06:30-09:40

1 stop20h 10m

London Heathrow

Wed 9/12

11:35-13:49

1 stop33h 14m

£762

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sat 7/11

06:30-09:40

1 stop20h 10m

London Heathrow

Wed 9/12

11:35-21:13

1 stop16h 38m

£800

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Thu 5/11

06:30-09:40

1 stop20h 10m

London Heathrow

Thu 10/12

11:35-21:13

1 stop16h 38m

£800

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Tue 3/11

14:45-09:40

1 stop11h 55m

London Heathrow

Mon 7/12

11:35-21:13

1 stop16h 38m

£800

Fastest return journey

Great FallsLondon

GTF Great Falls - LHR London Heathrow

GTFLHR

Great Falls

Sat 7/11

13:18-10:00

1 stop13h 42m

London Heathrow

Sat 12/12

10:45-17:39

1 stop13h 54m

£853

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Sorted by cheapest first

Best time to book a flight from Great Falls to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Great Falls with our price prediction graph.

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.

Related info for your journey

What airport do you fly from for flights from Great Falls to London Heathrow?
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 Heathrow. 0 airlines have flights from Great Falls to London Heathrow on a regular basis. Booking flights from Great Falls to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.
How long is the flight from Great Falls to London Heathrow Airport?
Airlines like Delta and United Airlines fly from Great Falls to London Heathrow Airport in about 13h 41m. The time it takes to get you to your destination can typically vary by up to 7h 39m. The distance between Great Falls and London Heathrow Airport is about 4472 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
Can I find deals for flights from Great Falls to Heathrow that include hotel bookings?
Yes. In addition to deals on Great Falls to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Great Falls to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Heathrow.
Can I find deals for business class flights from Great Falls to Heathrow?
Yes. Cheapflights offers flight deals from Great Falls to Heathrow 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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Cheap flights from Great Falls to London Heathrow Airport from £732

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Great Falls to Heathrow

Cheapest flights from Great Falls to HeathrowExplore the most affordable flight options available from Great Falls to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Explore the most affordable flight options available from Great Falls to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Best flights from Great Falls to HeathrowDiscover carefully curated flight deals from Great Falls to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 October 2026.

Discover carefully curated flight deals from Great Falls to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 October 2026.

Last-minute flights from Great Falls to HeathrowDiscover last-minute flight deals from Great Falls to Heathrow. Data last updated 27 October 2026 and is based on user searches.

Discover last-minute flight deals from Great Falls to Heathrow. Data last updated 27 October 2026 and is based on user searches.

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Use the filters below to find and compare flights from Great Falls to London Heathrow Airport that are best for you.

Best time to book a flight from Great Falls to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Great Falls with our price prediction graph.

Related info for your journey

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

How long is the flight from Great Falls to London Heathrow Airport?

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

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

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

Travelling to a place near London Heathrow Airport?

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Alternative routes for Great Falls to Heathrow

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Complete your trip

Complete your trip to Heathrow 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 Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 October 2026.

Great Falls and Heathrow flights

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

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Cheapest flights from Great Falls to Heathrow
Explore the most affordable flight options available from Great Falls to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Best flights from Great Falls to Heathrow
Discover carefully curated flight deals from Great Falls to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 October 2026.

Last-minute flights from Great Falls to Heathrow
Discover last-minute flight deals from Great Falls to Heathrow. Data last updated 27 October 2026 and is based on user searches.