Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Great Falls to the United Kingdom from $471

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to the United Kingdom departing on 12/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Great Falls to the United Kingdom

Cheap round-trip flights

Delta Logo
5:40 am - 9:50 amGTF-LHR
21h 10m1 stop
Delta Logo
6:15 am - 5:29 pmLHR-GTF
18h 14m2 stops
$627Delta
Find Deal
Mon, Sep 29 - Wed, Oct 8
Delta Logo
6:11 pm - 6:25 amGTF-LHR
29h 14m2 stops
Delta Logo
6:15 am - 5:29 pmLHR-GTF
18h 14m2 stops
$632Delta
Find Deal
Mon, Sep 29 - Wed, Oct 8
Delta Logo
5:40 am - 9:50 amGTF-LHR
21h 10m1 stop
Delta Logo
11:00 am - 11:06 pmLHR-GTF
19h 06m1 stop
$635Delta
Find Deal
Mon, Sep 29 - Wed, Oct 8
Logo
6:15 pm - 4:40 pmGTF-EDI
15h 25m2 stops
Logo
3:30 pm - 5:35 pmEDI-GTF
33h 05m2 stops
$727
Find Deal
Thu, Oct 9 - Thu, Oct 23
United Airlines Logo
7:00 am - 12:20 pmGTF-LHR
22h 20m1 stop
United Airlines Logo
12:05 pm - 9:11 pmLHR-GTF
40h 06m2 stops
$730United Airlines
Find Deal
Mon, Sep 29 - Wed, Oct 8
United Airlines Logo
2:31 pm - 6:30 amGTF-LHR
32h 59m2 stops
United Airlines Logo
7:25 am - 9:11 pmLHR-GTF
20h 46m2 stops
$732United Airlines
Find Deal
Mon, Sep 29 - Wed, Oct 8
United Airlines Logo
7:00 am - 5:55 amGTF-LHR
15h 55m2 stops
United Airlines Logo
8:30 am - 9:11 pmLHR-GTF
43h 41m2 stops
$735United Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 8
Logo
4:29 pm - 1:40 pmGTF-LHR
14h 11m1 stop
Logo
9:50 am - 5:35 pmLHR-GTF
14h 45m1 stop
$747
Find Deal
Mon, Sep 29 - Wed, Oct 8
Delta Logo
5:40 am - 11:00 amGTF-LHR
22h 20m2 stops
Delta Logo
6:15 am - 5:29 pmLHR-GTF
18h 14m2 stops
$753Delta
Find Deal
Tue, Sep 30 - Wed, Oct 8
United Airlines Logo
7:00 am - 7:20 amGTF-EDI
41h 20m2 stops
United Airlines Logo
9:40 am - 9:11 pmEDI-GTF
18h 31m2 stops
$907United Airlines
Find Deal
Thu, Oct 9 - Wed, Oct 22

Delta flights from Great Falls to United Kingdom

Our best Delta deals on Great Falls to United Kingdom flight tickets
Delta
Sep 29
GTF5:40 amGreat Falls
21h 10m
1 stop
LHR9:50 amLondon Heathrow
Oct 8
LHR6:15 amLondon Heathrow
18h 14m
2 stops
GTF5:29 pmGreat Falls
$627
Find similar
Delta
Sep 29
GTF6:11 pmGreat Falls
29h 14m
2 stops
LHR6:25 amLondon Heathrow
Oct 8
LHR6:15 amLondon Heathrow
18h 14m
2 stops
GTF5:29 pmGreat Falls
$632
Find similar
Delta
Sep 29
GTF5:40 amGreat Falls
21h 10m
1 stop
LHR9:50 amLondon Heathrow
Oct 8
LHR11:00 amLondon Heathrow
19h 06m
1 stop
GTF11:06 pmGreat Falls
$635
Find similar

United Airlines flights from Great Falls to United Kingdom

Our best United Airlines deals on Great Falls to United Kingdom flight tickets
United Airlines
Sep 29
GTF7:00 amGreat Falls
22h 20m
1 stop
LHR12:20 pmLondon Heathrow
Oct 8
LHR12:05 pmLondon Heathrow
40h 06m
2 stops
GTF9:11 pmGreat Falls
$730
Find similar
United Airlines
Sep 29
GTF2:31 pmGreat Falls
32h 59m
2 stops
LHR6:30 amLondon Heathrow
Oct 8
LHR7:25 amLondon Heathrow
20h 46m
2 stops
GTF9:11 pmGreat Falls
$732
Find similar
United Airlines
Sep 30
GTF7:00 amGreat Falls
15h 55m
2 stops
LHR5:55 amLondon Heathrow
Oct 8
LHR8:30 amLondon Heathrow
43h 41m
2 stops
GTF9:11 pmGreat Falls
$735
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 17, 2025.
Use the filters below to find and compare flights from Great Falls to the United Kingdom that are best for you.

Fly from

Fly to

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

$627

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

6:11 pm-6:25 am

2 stops29h 14m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$632

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

5:40 am-9:50 am

1 stop21h 10m

London Heathrow

Wed 10/8

11:00 am-11:06 pm

1 stop19h 06m

$635

Great FallsEdinburgh

GTF - EDI

GTFEDI

Great Falls

Thu 10/9

6:15 pm-4:40 pm

2 stops15h 25m

Edinburgh Turnhouse

Thu 10/23

3:30 pm-5:35 pm

2 stops33h 05m

$727

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

7:00 am-12:20 pm

1 stop22h 20m

London Heathrow

Wed 10/8

12:05 pm-9:11 pm

2 stops40h 06m

$730

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

2:31 pm-6:30 am

2 stops32h 59m

London Heathrow

Wed 10/8

7:25 am-9:11 pm

2 stops20h 46m

$732

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 9/30

7:00 am-5:55 am

2 stops15h 55m

London Heathrow

Wed 10/8

8:30 am-9:11 pm

2 stops43h 41m

$735

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 9/29

4:29 pm-1:40 pm

1 stop14h 11m

London Heathrow

Wed 10/8

9:50 am-5:35 pm

1 stop14h 45m

$747

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 9/30

5:40 am-11:00 am

2 stops22h 20m

London Heathrow

Wed 10/8

6:15 am-5:29 pm

2 stops18h 14m

$753

Great FallsEdinburgh

GTF - EDI

GTFEDI

Great Falls

Thu 10/9

7:00 am-7:20 am

2 stops41h 20m

Edinburgh Turnhouse

Wed 10/22

9:40 am-9:11 pm

2 stops18h 31m

$907

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

See travel insights to the United Kingdom from

How to get the cheapest flight ticket from Great Falls to United Kingdom

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Great Falls to United Kingdom is on a Wednesday when prices can be found for as low as $672. The most expensive day to fly to United Kingdom is Tuesday, with ticket prices averaging around $1,371.

What is the cheapest time of day to depart on your flight to United Kingdom?

According to our data, the cheapest time of day to fly to United Kingdom is at noon. momondo users have found flights departing from Great Falls to United Kingdom at noon for as low as $778. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the morning, with an average ticket price of $813. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Great Falls to United Kingdom flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to United Kingdom

Best Price Found

$471

Fastest flight time

14h 11m

Direct flights

None

Airports in United Kingdom

2 airports
The best one-way flight to United Kingdom from Great Falls in the past 72 hours is $471. The best round-trip flight deal from Great Falls to United Kingdom found on momondo in the last 72 hours is $627.
The fastest flight from Great Falls to United Kingdom takes 14h 11m
There are no direct flights from Great Falls to United Kingdom. Popular non-direct routes for this connection are Great Falls Airport - London Heathrow Airport and Great Falls Airport - Edinburgh Turnhouse Airport.
There are 2 airports near United Kingdom: London Heathrow (LHR), Edinburgh Turnhouse (EDI)
Search flight deals

  • When did momondo last update prices for flights from Great Falls Airport to United Kingdom?

    Prices for flights from Great Falls Airport to United Kingdom were last updated today.

  • How many operators does momondo search for flights from Great Falls Airport to United Kingdom?

  • How old do you have to be to fly from Great Falls Airport to United Kingdom?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Great Falls Airport to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The necessary travel and health documents for your United Kingdom trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Great Falls to United Kingdom

Compare and see reviews for airlines that fly from Great Falls to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $645Free CancellationRating
7.4
8,919 reviews
Search United Airlines flights
DeltaPriceFrom $764Free CancellationRating
8.0
7,986 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to United Kingdom?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to United Kingdom from Great Falls.

Can I find flights from Great Falls to United Kingdom with flexible booking policies on momondo?

Flights from Great Falls to United Kingdom with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Great Falls to United Kingdom?

Once all potential Great Falls to United Kingdom flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Great Falls to United Kingdom right now. Can momondo alert me if prices change?

Price alerts on flights to United Kingdom from Great Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your United Kingdom trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 8/22
Fri 8/29
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $354
Flights to Manchesterfrom $362
Flights to Edinburghfrom $385
Flights to Birminghamfrom $398
Flights to Glasgowfrom $406
Flights to Belfastfrom $475
Flights to Newcastle upon Tynefrom $456
Flights to Bristolfrom $474
Flights to Invernessfrom $402
Flights to Liverpoolfrom $461
Flights to Aberdeenfrom $507
Flights to Leedsfrom $456