When did momondo last update prices for flights from Great Falls Airport to London?

Prices for flights from Great Falls Airport to London are updated daily.

How many operators does momondo search for flights from Great Falls Airport to London?

There is 1 operator available for flights from Great Falls Airport to London as of January 2026.

How old do you have to be to fly from Great Falls Airport to London?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Great Falls Airport to London.

What documentation or ID do you need to fly to London?

The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$616 Cheap Flights from Great Falls to London in 2026

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Find the cheapest flights from Great Falls to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:20 pm - 8:05 am

GTF

LHR

30h 45m

2 stops

6:20 am - 4:42 pm

LHR

GTF

17h 22m

2 stops

$616Delta

Sun, Mar 1 - Sun, Mar 8

1:12 pm - 10:00 am

GTF

LHR

13h 48m

1 stop

10:45 am - 12:30 pm

LHR

GTF

32h 45m

1 stop

$634Scandinavian Airlines

Wed, Feb 11 - Sun, Feb 22

5:25 am - 8:05 am

GTF

LHR

19h 40m

2 stops

4:50 pm - 12:30 pm

LHR

GTF

26h 40m

2 stops

$638Scandinavian Airlines

Wed, Feb 11 - Sun, Feb 22

5:59 pm - 6:50 am

GTF

LHR

29h 51m

2 stops

4:30 pm - 4:17 pm

LHR

GTF

30h 47m

2 stops

$663Multiple Airlines

Wed, Feb 11 - Sun, Feb 22

6:10 am - 9:40 am

GTF

LHR

20h 30m

1 stop

11:35 am - 9:33 pm

LHR

GTF

16h 58m

1 stop

$709United Airlines

Wed, Feb 11 - Sun, Feb 22

6:10 am - 9:40 am

GTF

LHR

20h 30m

1 stop

10:30 am - 9:33 pm

LHR

GTF

42h 03m

2 stops

$711United Airlines

Wed, Feb 11 - Sun, Feb 22

2:30 pm - 12:20 pm

GTF

LHR

14h 50m

1 stop

2:50 pm - 9:17 pm

LHR

GTF

13h 27m

1 stop

$725United Airlines

Wed, Apr 1 - Sat, Apr 11

6:15 am - 11:35 am

GTF

LHR

22h 20m

2 stops

2:50 pm - 9:17 pm

LHR

GTF

13h 27m

1 stop

$729United Airlines

Wed, Apr 1 - Sat, Apr 11

2:25 pm - 9:40 am

GTF

LHR

12h 15m

1 stop

6:30 am - 9:11 pm

LHR

GTF

21h 41m

2 stops

$741United Airlines

Fri, Feb 27 - Fri, Mar 6

2:25 pm - 9:40 am

GTF

LHR

12h 15m

1 stop

11:35 am - 9:11 pm

LHR

GTF

16h 36m

1 stop

$758United Airlines

Fri, Feb 27 - Fri, Mar 6

United Airlines flights from Great Falls to London

Our best United Airlines deals on Great Falls to London flight tickets

United Airlines

Feb 11

GTF6:10 amGreat Falls

20h 30m

1 stop

LHR9:40 amLondon Heathrow

Feb 22

LHR11:35 amLondon Heathrow

16h 58m

1 stop

GTF9:33 pmGreat Falls

$709

United Airlines

Feb 11

GTF6:10 amGreat Falls

20h 30m

1 stop

LHR9:40 amLondon Heathrow

Feb 22

LHR10:30 amLondon Heathrow

42h 03m

2 stops

GTF9:33 pmGreat Falls

$711

United Airlines

Apr 1

GTF2:30 pmGreat Falls

14h 50m

1 stop

LHR12:20 pmLondon Heathrow

Apr 11

LHR2:50 pmLondon Heathrow

13h 27m

1 stop

GTF9:17 pmGreat Falls

$725

Scandinavian Airlines flights from Great Falls to London

Our best Scandinavian Airlines deals on Great Falls to London flight tickets

Scandinavian Airlines

Feb 11

GTF1:12 pmGreat Falls

13h 48m

1 stop

LHR10:00 amLondon Heathrow

Feb 22

LHR10:45 amLondon Heathrow

32h 45m

1 stop

GTF12:30 pmGreat Falls

$634

Scandinavian Airlines

Feb 11

GTF5:25 amGreat Falls

19h 40m

2 stops

LHR8:05 amLondon Heathrow

Feb 22

LHR4:50 pmLondon Heathrow

26h 40m

2 stops

GTF12:30 pmGreat Falls

$638

Fly from

Fly to

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 3/1

6:20 pm-8:05 am

2 stops30h 45m

London Heathrow

Sun 3/8

6:20 am-4:42 pm

2 stops17h 22m

$616

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 2/11

1:12 pm-10:00 am

1 stop13h 48m

London Heathrow

Sun 2/22

10:45 am-12:30 pm

1 stop32h 45m

$634

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 2/11

5:25 am-8:05 am

2 stops19h 40m

London Heathrow

Sun 2/22

4:50 pm-12:30 pm

2 stops26h 40m

$638

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 2/11

5:59 pm-6:50 am

2 stops29h 51m

London Heathrow

Sun 2/22

4:30 pm-4:17 pm

2 stops30h 47m

$663

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 2/11

6:10 am-9:40 am

1 stop20h 30m

London Heathrow

Sun 2/22

11:35 am-9:33 pm

1 stop16h 58m

$709

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 2/11

6:10 am-9:40 am

1 stop20h 30m

London Heathrow

Sun 2/22

10:30 am-9:33 pm

2 stops42h 03m

$711

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 4/1

2:30 pm-12:20 pm

1 stop14h 50m

London Heathrow

Sat 4/11

2:50 pm-9:17 pm

1 stop13h 27m

$725

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 4/1

6:15 am-11:35 am

2 stops22h 20m

London Heathrow

Sat 4/11

2:50 pm-9:17 pm

1 stop13h 27m

$729

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 2/27

2:25 pm-9:40 am

1 stop12h 15m

London Heathrow

Fri 3/6

6:30 am-9:11 pm

2 stops21h 41m

$741

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Fri 2/27

2:25 pm-9:40 am

1 stop12h 15m

London Heathrow

Fri 3/6

11:35 am-9:11 pm

1 stop16h 36m

$758

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Great Falls to London

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

Which airport is the most popular layover for flights between Great Falls and London?

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Great Falls to London?

Flights via Denver (DEN) offer the lowest average round-trip price of $697.

Which layover airport has the shortest travel time from Great Falls to London?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 12h 05m.

Which layover airport has the shortest connection time from Great Falls to London?

Denver (DEN) has the shortest average layover time for this route: 1h 33m.

When to book flights from Great Falls to London

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Great Falls to London (GTF to LON) flight deals and tips

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

Fastest flight time	12h 11m
Direct flights	None

The fastest flight from Great Falls to London takes 12h 11m

There are no direct flights from Great Falls to London. There are no popular flight routes from Great Falls to London.

Search flight deals

How far is Great Falls to London by plane?
The distance between Great Falls and London is about 4477.2 mi. 12h 11m is a normal flight duration for this route.
When did momondo last update prices for flights from Great Falls Airport to London?
Prices for flights from Great Falls Airport to London are updated daily.
How many operators does momondo search for flights from Great Falls Airport to London?
There is 1 operator available for flights from Great Falls Airport to London as of January 2026.
How old do you have to be to fly from Great Falls Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Great Falls Airport to London.
What documentation or ID do you need to fly to London?
The travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Great Falls to London

Compare and see reviews for airlines that fly from Great Falls to London with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $645	Free Cancellation	Rating 7.4 9,163 reviews		Search United Airlines flights

Gatwick

Hounslow

Luton

Milton Keynes

Dover

Slough

Guildford

Crawley

Dartford

Hayes

Wembley

Brentwood

Watford

Cobham

Folkestone

Romford

Harrow

Croydon

Richmond

Uxbridge

Why use momondo?

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

Finding the right flight to London from Great Falls is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to London from Great Falls with this policy.

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

Once you have performed a search for Great Falls to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to London from Great Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London 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

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Get notified when prices go down

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Popular cities in the United Kingdom

Flights to Manchesterfrom $385

Flights to Edinburghfrom $396

Flights to Birminghamfrom $396

Flights to Glasgowfrom $390

Flights to Newcastle upon Tynefrom $420

Flights to Belfastfrom $494

Flights to Bristolfrom $456

Flights to Invernessfrom $363

Flights to Liverpoolfrom $428

Flights to Aberdeenfrom $481

Flights to Leedsfrom $466

Flights to Cardifffrom $474

Cheap flights from Great Falls to London from $616

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to London departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Great Falls to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

United Airlines flights from Great Falls to London

Our best United Airlines deals on Great Falls to London flight tickets

Scandinavian Airlines flights from Great Falls to London

Our best Scandinavian Airlines deals on Great Falls to London flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Great Falls to London that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Great Falls to London

Which airport is the most popular layover for flights between Great Falls and London?

Salt Lake City (SLC) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Great Falls to London?

Flights via Denver (DEN) offer the lowest average round-trip price of $697.

Which layover airport has the shortest travel time from Great Falls to London?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 12h 05m.

Which layover airport has the shortest connection time from Great Falls to London?

Denver (DEN) has the shortest average layover time for this route: 1h 33m.

When to book flights from Great Falls to London

Cheap Great Falls to London (GTF to LON) flight deals and tips

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

Fastest flight time

Direct flights

How far is Great Falls to London by plane?

When did momondo last update prices for flights from Great Falls Airport to London?

How many operators does momondo search for flights from Great Falls Airport to London?

How old do you have to be to fly from Great Falls Airport to London?

What documentation or ID do you need to fly to London?

Best airlines flying from Great Falls to London

Compare and see reviews for airlines that fly from Great Falls to London with momondo

Traveling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London