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$1,089+ Cheap flights from Great Falls (GTF) to Heathrow (LHR)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LHR
avr. 2 — avr. 91
mer. 4/2
mer. 4/9
1 adult, Economy
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Cheap flight deals from Great Falls to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Heathrow (LHR). 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 mars 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,089
(United Airlines)
Provider with most accurate pricing for Great Falls-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Great Falls-London Heathrow flights.
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From Great Falls to London Heathrow
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Find flight deals from Great Falls to Heathrow

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 mars 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 7/302:35 pmGTF - LHR
1 stop14h 45mUnited Airlines
mer. 8/139:30 amLHR - GTF
2 stops42h 43mUnited Airlines
Deal found 3/27$1,089
This KLM deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/1512:40 pmGTF - LHR
1 stop14h 20mKLM
jeu. 1/110:45 amLHR - GTF
1 stop14h 03mKLM
Deal found 3/27$1,213
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 12/146:00 amGTF - LHR
1 stop23h 15mDelta
ven. 1/24:55 pmLHR - GTF
2 stops31h 53mDelta
Deal found 3/27$1,219
This Air France deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/155:30 amGTF - LHR
1 stop21h 30mMultiple Airlines
ven. 1/212:10 pmLHR - GTF
1 stop15h 03mMultiple Airlines
Deal found 3/27$1,263

Cheapflights Fare Finder

Customize your flight search to find flights from Great Falls to Heathrow 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 2,558,603 searches. Data last updated mars 28, 2025.
Use the filters below to find and compare flights from Great Falls to London Heathrow Airport that are best for you.

Fly from

Great Falls

Fly to

Heathrow

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

mer. 7/30

2:35 pm-12:20 pm

1 stop14h 45m

London Heathrow

mer. 8/13

9:30 am-9:13 pm

2 stops42h 43m

$1,089

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Compare providers for flights from Great Falls to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Great Falls to Heathrow in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Great Falls-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Great Falls-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Great Falls-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Great Falls-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.
Estimated round-trip 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 Heathrow Airport

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated mars 28, 2025.
United Airlines
7.4
Good
8,603 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,603 reviews
United Airlines
7.4
Good
8,603 reviews

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.0

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Great Falls to Heathrow. 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 Heathrow?

    For a flight from Great Falls to London Heathrow, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city. Great Falls is the only Great Falls airport and it handles 0 outbound flights to London Heathrow per day. 1 airline has flights to London Heathrow from Great Falls on a regular basis.

  • What is the cheapest airline to fly from Great Falls to London Heathrow Airport round-trip?

    Currently priced at $1,089, United Airlines will fly you from Great Falls to London Heathrow Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.

  • 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 vacation 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.

  • What is the cheapest month to book a flight from Great Falls to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Great Falls to London Heathrow Airport (average of $661). Flying from Great Falls to London Heathrow Airport in June is currently the most expensive (average of $1,115). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Luton
Wembley
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Horley
Canterbury
Gatwick
Dover
Orpington
Watford
Milton Keynes
Northampton
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

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Top airline flying from Great Falls to Heathrow

Discover the top airline that operate flights from Great Falls to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated mars 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$669Average$743FlexibilityNo cancel feeOn-time69%
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