HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
United Kingdom

$623+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LHR
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Great Falls to United Kingdom with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 September 14, 2025.

Round-trip from

$623
(Delta)
From Great Falls to United Kingdom
Search Deals

Find flight deals from Great Falls to United Kingdom

Cheapest flights from Great Falls to United Kingdom
Explore the most affordable flight options available from Great Falls to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This Delta deal was found by Cheapflights users on 9/12. 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.
Mon 9/295:40 amGTF - LHR
1 stop21h 10mDelta
Wed 10/86:15 amLHR - GTF
2 stops18h 14mDelta
Deal found 9/12$623
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/61:08 pmGTF - LHR
1 stop13h 42mDelta
Thu 10/1610:55 amLHR - GTF
1 stop13h 34mDelta
Deal found 9/11$631
This KLM deal was found by Cheapflights users on 9/13. 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.
Mon 10/61:08 pmGTF - LHR
2 stops18h 07mKLM
Wed 10/1511:00 amLHR - GTF
1 stop13h 29mKLM
Deal found 9/13$635
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:08 pmGTF - LHR
2 stops17h 22mDelta
Tue 10/149:35 amLHR - GTF
2 stops20h 31mDelta
Deal found 9/11$636
This Delta deal was found by Cheapflights users on 9/13. 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.
Mon 10/61:08 pmGTF - LHR
2 stops17h 37mDelta
Tue 10/149:35 amLHR - GTF
2 stops20h 31mDelta
Deal found 9/13$655
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:11 pmGTF - LHR
2 stops15h 04mKLM
Tue 10/1410:55 amLHR - GTF
1 stop13h 34mKLM
Deal found 9/11$663
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/52:31 pmGTF - LHR
1 stop12h 09mUnited Airlines
Thu 10/163:50 pmLHR - GTF
2 stops28h 36mUnited Airlines
Deal found 9/11$696
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/67:00 amGTF - LHR
2 stops21h 45mUnited Airlines
Wed 10/153:50 pmLHR - GTF
2 stops28h 36mUnited Airlines
Deal found 9/11$700
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/82:31 pmGTF - LHR
1 stop12h 09mUnited Airlines
Wed 10/152:50 pmLHR - GTF
1 stop13h 21mUnited Airlines
Deal found 9/11$712
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/57:00 amGTF - LHR
2 stops15h 55mUnited Airlines
Fri 10/178:30 amLHR - GTF
2 stops19h 41mUnited Airlines
Deal found 9/13$716
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:50 pmGTF - NCL
3 stops34h 35mMultiple Airlines
Tue 11/46:45 amNCL - GTF
2 stops42h 25mMultiple Airlines
Deal found 9/13$739
This KLM deal was found by Cheapflights users on 9/12. 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.
Sun 12/141:12 pmGTF - EDI
2 stops26h 58mKLM
Sun 12/285:45 amEDI - GTF
2 stops18h 54mKLM
Deal found 9/12$1,030

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 September 14, 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

Mon 9/29

5:40 am-9:50 am

1 stop21h 10m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$623

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 9/30

1:05 pm-9:50 am

1 stop13h 45m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$623

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

1:05 pm-9:50 am

1 stop13h 45m

London Heathrow

Wed 10/8

11:00 am-5:29 pm

1 stop13h 29m

$631

Great FallsNewcastle upon Tyne

GTF - NCL

GTFNCL

Great Falls

Tue 10/28

6:50 pm-11:25 am

3 stops34h 35m

Newcastle upon Tyne

Tue 11/4

6:45 am-6:10 pm

2 stops42h 25m

$739

Great FallsEdinburgh

GTF - EDI

GTFEDI

Great Falls

Sun 12/14

1:12 pm-11:10 pm

2 stops26h 58m

Edinburgh Turnhouse

Sun 12/28

5:45 am-5:39 pm

2 stops18h 54m

$1,030

Great FallsNewcastle upon Tyne

GTF - NCL

GTFNCL

Great Falls

Tue 10/28

5:30 am-10:20 am

2 stops22h 50m

Newcastle upon Tyne

Tue 11/4

6:00 am-5:29 pm

2 stops18h 29m

$1,413

Great FallsEdinburgh

GTF - EDI

GTFEDI

Great Falls

Sun 12/14

6:15 am-10:30 am

2 stops21h 15m

Edinburgh Turnhouse

Sun 12/28

6:05 am-10:46 pm

3 stops23h 41m

$1,456

Great FallsEdinburgh

GTF - EDI

GTFEDI

Great Falls

Tue 10/28

6:20 am-9:30 am

2 stops21h 10m

Edinburgh Turnhouse

Tue 11/4

9:25 am-10:39 pm

2 stops20h 14m

$5,435

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

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 September 14, 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
8.0
Very good
7,959 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,959 reviews
Delta
8.0
Very good
7,959 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,934 reviews
Delta
8.0
Very good
7,959 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 21h 10m. Delta provides one of the quickest options available for as low as $623. The distance between Great Falls and United Kingdom is about 4472 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

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

    Currently, November is the cheapest month in which you can book a flight from Great Falls to United Kingdom (average of $661). Flying from Great Falls to United Kingdom in June is currently the most expensive (average of $1,098). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Great Falls to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
Bozeman to Heathrow flights
Bozeman to Athens flights
Missoula to Heathrow flights
Billings to Heathrow flights
Billings to Barcelona-El Prat flights
Bozeman to Dublin flights
Bozeman to Lisbon flights
Billings to Edinburgh flights
Bozeman to Leonardo da Vinci/Fiumicino flights
Great Falls to Heathrow flights
Bozeman to Charles de Gaulle flights
Bozeman to Geneva flights
Missoula to Leonardo da Vinci/Fiumicino flights
Bozeman to Barcelona-El Prat flights
Bozeman to Malpensa flights
Bozeman to Frankfurt flights
Bozeman to Zurich flights
Kalispell to Oslo Gardermoen flights
Kalispell to Frankfurt flights
Missoula to Vicenza flights
Billings to Leonardo da Vinci/Fiumicino flights
Bozeman to Amsterdam flights
Bozeman to Madrid flights
Bozeman to Munich flights
Missoula to Charles de Gaulle flights
Billings to Dublin flights
Billings to Bruxelles-National flights
Kalispell to Amsterdam flights
Bozeman to Orly flights
Kalispell to Heathrow flights
Kalispell to Dublin flights
Bozeman to Istanbul flights
Missoula to Dublin flights
Bozeman to Linate flights
Bozeman to London City flights
Missoula to Amsterdam flights
Billings to Riga flights
Missoula to Lisbon flights
Missoula to Athens flights
Missoula to Madrid flights
Bozeman to Prague flights
Missoula to Munich flights
Missoula to Malpensa flights
Missoula to Bruxelles-National flights
Missoula to Gatwick flights
Missoula to Duesseldorf Intl flights
Kalispell to Keflavik Intl flights

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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$645Average$950FlexibilityNo cancel feeOn-time69%
DeltaCheapest$764Average$925FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.