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$639+ Cheap flights from Great Falls (GTF) to the United Kingdom

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LHR
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Great Falls to United Kingdom

Best flights from Great Falls to United Kingdom
Discover carefully curated flight deals from Great Falls to United Kingdom that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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.
Thu 1/86:10 amGTF - LHR
1 stop20h 30mUnited Airlines
Mon 1/1211:10 amLHR - GTF
2 stops41h 43mUnited Airlines
Deal found 12/10$639
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Thu 1/296:10 amGTF - EDI
2 stops18h 45mUnited Airlines
Mon 2/29:25 amEDI - GTF
2 stops19h 28mUnited Airlines
Deal found 12/11$719
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Wed 4/226:15 amGTF - LHR
2 stops17h 15mUnited Airlines
Mon 4/277:25 amLHR - GTF
2 stops20h 52mUnited Airlines
Deal found 12/10$770
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Mon 1/56:15 amGTF - LHR
2 stops18h 40mUnited Airlines
Mon 1/1210:00 amLHR - GTF
2 stops18h 53mUnited Airlines
Deal found 12/11$1,063

Find flight deals from Great Falls to United Kingdom

Keep the following information in mind while searching for Great Falls to United Kingdom flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$639
(United Airlines)
Provider with most accurate pricing for Great Falls-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Great Falls-London (LON) flights.
Search Deals
From Great Falls to United Kingdom
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Great Falls to United Kingdom 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 December 12, 2025.
Use the filters below to find and compare flights from Great Falls to the United Kingdom that are best for you.

Fly from

Great Falls

Fly to

United Kingdom

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Thu 1/8

6:10 am-9:40 am

1 stop20h 30m

London Heathrow

Mon 1/12

11:10 am-9:53 pm

2 stops41h 43m

$639

Great FallsEdinburgh

GTF - EDI

GTFEDI

Great Falls

Thu 1/29

6:10 am-7:55 am

2 stops18h 45m

Edinburgh Turnhouse

Mon 2/2

9:25 am-9:53 pm

2 stops19h 28m

$719

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 4/22

6:15 am-6:30 am

2 stops17h 15m

London Heathrow

Mon 4/27

7:25 am-9:17 pm

2 stops20h 52m

$770

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 1/5

6:15 am-7:55 am

2 stops18h 40m

London Heathrow

Mon 1/12

10:00 am-9:53 pm

2 stops18h 53m

$1,063

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Best time to book a flight from Great Falls to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom 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 the United Kingdom
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from Great Falls to the United Kingdom, such as Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

    For a flight from Great Falls to United Kingdom, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city.

  • How long is the flight from Great Falls to United Kingdom?

    A quick flight from Great Falls to United Kingdom can take about 20h 30m. United Airlines provides one of the quickest options available for as low as $639. The distance between Great Falls and United Kingdom is about 4472 mi.

  • What are the most popular routes from Great Falls to United Kingdom?

    The most popular route from Great Falls to United Kingdom is Great Falls - London Heathrow. You may also consider Great Falls - Edinburgh Turnhouse or Great Falls - Newcastle upon Tyne.

  • Can I find deals for flights from Great Falls to United Kingdom that include hotel bookings?

    Yes. In addition to deals on Great Falls to United Kingdom flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to United Kingdom?

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

  • Can I find deals for business class flights from Great Falls to United Kingdom?

    Yes. Cheapflights offers flight deals from Great Falls to United Kingdom 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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Top 2 airlines flying from Great Falls to United Kingdom

Discover the top 2 airlines that operate flights from Great Falls to United Kingdom. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$645Average$950FlexibilityNo cancel feeOn-time69%
DeltaCheapest$764Average$925FlexibilityNo cancel feeOn-timeN/A

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