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$897+ Cheap flights from Great Falls (GTF) to London (LON)

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LON
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap 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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$897
(Delta)
Provider with most accurate pricing for Great Falls-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Great Falls-London (LON) flights.
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From Great Falls to London (LON)
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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 May 1, 2025.

This Delta deal was found by Cheapflights users on 4/29. 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.
Tue 5/612:00 pmGTF - LHR
1 stop14h 50mDelta
Tue 5/276:30 amLHR - GTF
2 stops21h 02mDelta
Deal found 4/29$897
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 5/112:26 pmGTF - LHR
1 stop14h 54mUnited Airlines
Sun 6/111:25 amLHR - GTF
1 stop16h 45mUnited Airlines
Deal found 4/29$911
This KLM deal was found by Cheapflights users on 4/28. 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.
Sat 5/1011:45 amGTF - LHR
1 stop15h 05mKLM
Fri 5/3011:45 amLHR - GTF
2 stops17h 46mKLM
Deal found 4/28$947
This Air France deal was found by Cheapflights users on 4/28. 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.
Tue 4/2912:00 pmGTF - LHR
1 stop14h 50mMultiple Airlines
Thu 5/812:25 pmLHR - GTF
1 stop15h 07mMultiple Airlines
Deal found 4/28$963

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated May 1, 2025.
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 5/12

5:45 am-9:50 am

1 stop21h 05m

London Heathrow

Wed 5/28

6:30 am-10:31 pm

2 stops23h 01m

$897

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 5/11

2:26 pm-9:40 am

1 stop12h 14m

London Heathrow

Thu 5/29

11:25 am-9:10 pm

1 stop16h 45m

$911

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 5/10

11:45 am-9:50 am

1 stop15h 05m

London Heathrow

Fri 5/30

11:45 am-10:31 pm

2 stops17h 46m

$947

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 5/10

11:45 am-1:10 pm

2 stops18h 25m

London Heathrow

Thu 5/29

12:25 pm-8:32 pm

1 stop15h 07m

$965

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

  • Most accurate provider: When it comes to deals on Great Falls-London 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Great Falls-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Great Falls-London 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 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 London

Have a flexible travel schedule? Discover the best time to fly to London 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

Rainfall in London by month

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

In terms of precipitation, rainfall in London 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 when rainfall is around 1.6 in.

Temperature in London by month

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

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 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated May 1, 2025.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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. 1 airline 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.

  • What are the cheapest airlines flying from Great Falls to London round-trip?

    Flying on Delta is currently your cheapest option to London, with prices starting at $897. Additional round-trip tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at $911 and $947, respectively.

  • 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 vacation 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.

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

    Currently, November is the cheapest month in which you can book a flight from Great Falls to London (average of $661). Flying from Great Falls to London in June is currently the most expensive (average of $1,103). 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
Hayes
Hounslow
Thornton Heath
Luton
Horley
Canterbury
Harrow
Wembley
Dover
Gatwick
Orpington
Watford
Croydon
Borehamwood
Folkestone
Ilford
Aylesbury
Sutton
Chelmsford
Brentwood

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Great Falls to London

Discover the top airline that operate flights from Great Falls to London. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$669Average$743FlexibilityNo cancel feeOn-time69%

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