What is the cheapest airline that flies from Louisville Intl to London?

Virgin Atlantic, United Airlines, and American Airlines are the most popular carriers operating from Louisville Intl to London

What airlines fly to London?

British Airways, American Airlines and Iberia are the top three most popular airlines that fly to London from Louisville according to our data. British Airways is the first choice among our users, with 39% of people opting to fly with this airline when traveling to London. Keep in mind that there are 8 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Chicago (ORD) was the most common stop: 45% of momondo users choosing 1-stop flights on this route connected there.

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

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 10h 39m.

Which layover airport offers the lowest fares from Louisville to London?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $921.

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

Chicago (ORD) has the shortest average layover time for this route: 1h 16m.

When did momondo last update prices for flights from Louisville Intl Airport to London?

Prices for flights from Louisville Intl Airport to London refresh daily.

How many operators does momondo search for flights from Louisville Intl Airport to London?

As of August 2025, there are 5 operators available to choose from for flights from Louisville Intl Airport to London.

How old do you have to be to fly from Louisville Intl Airport to London?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to London.

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

The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$238 Cheap Flights from Louisville to London (SDF-LON) in 2025

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Find the cheapest flights from Louisville to London (SDF-LON)

Round-trip

One-way

Last minute

Cheap round-trip flights

10:14 am - 10:00 amSDF-LGW

18h 46m1 stop

2:00 pm - 10:47 pmLGW-SDF

13h 47m1 stop

$532

Find Deal

Wed, Oct 1 - Wed, Oct 8

4:20 pm - 8:05 amSDF-LHR

10h 45m1 stop

11:30 am - 11:52 pmLHR-SDF

17h 22m2 stops

$567Delta

Find Deal

Tue, Sep 2 - Thu, Sep 11

9:34 am - 6:45 amSDF-LHR

16h 11m1 stop

6:20 am - 9:15 pmLHR-SDF

18h 55m2 stops

$568Delta

Find Deal

Wed, Oct 22 - Fri, Oct 31

7:15 pm - 1:10 pmSDF-LHR

12h 55m1 stop

12:30 pm - 10:34 pmLHR-SDF

14h 04m1 stop

$576KLM

Find Deal

Wed, Oct 22 - Fri, Oct 31

1:20 pm - 7:05 amSDF-LHR

12h 45m1 stop

7:20 pm - 7:01 pmLHR-SDF

28h 41m2 stops

$597Virgin Atlantic

Find Deal

Mon, Nov 17 - Mon, Nov 24

6:00 pm - 11:10 amSDF-LHR

12h 10m1 stop

1:05 pm - 8:51 pmLHR-SDF

12h 46m1 stop

$641KLM

Find Deal

Tue, Sep 2 - Thu, Sep 11

12:54 pm - 6:20 amSDF-LHR

12h 26m2 stops

12:45 pm - 10:34 pmLHR-SDF

14h 49m2 stops

$646Virgin Atlantic

Find Deal

Wed, Oct 8 - Fri, Oct 17

7:36 pm - 11:45 amSDF-LHR

11h 09m1 stop

2:05 pm - 5:13 pmLHR-SDF

32h 08m2 stops

$673United Airlines

Find Deal

Mon, Sep 22 - Wed, Oct 1

1:55 pm - 7:55 amSDF-LHR

13h 00m1 stop

9:00 am - 8:14 pmLHR-SDF

16h 14m2 stops

$677United Airlines

Find Deal

Wed, Feb 4 - Wed, Feb 18

12:15 pm - 2:05 pmSDF-LCY

20h 50m2 stops

7:15 pm - 6:50 pmLCY-SDF

28h 35m2 stops

$3,940British Airways

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Wed, Feb 4 - Wed, Feb 18

Virgin Atlantic flights from Louisville to London

Our best Virgin Atlantic deals on Louisville to London flight tickets

Virgin Atlantic

Sep 1

SDF12:45 pmLouisville Intl

19h 45m

1 stop

LHR1:30 pmLondon Heathrow

Sep 16

LHR6:30 amLondon Heathrow

15h 35m

2 stops

SDF5:05 pmLouisville Intl

$517

Find similar

Virgin Atlantic

Sep 1

SDF12:45 pmLouisville Intl

19h 45m

1 stop

LHR1:30 pmLondon Heathrow

Sep 16

LHR11:45 amLondon Heathrow

14h 31m

1 stop

SDF9:16 pmLouisville Intl

$524

Find similar

Virgin Atlantic

Nov 17

SDF1:20 pmLouisville Intl

12h 45m

1 stop

LHR7:05 amLondon Heathrow

Nov 24

LHR7:20 pmLondon Heathrow

28h 41m

2 stops

SDF7:01 pmLouisville Intl

$597

Find similar

United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets

United Airlines

Sep 22

SDF7:36 pmLouisville Intl

11h 09m

1 stop

LHR11:45 amLondon Heathrow

Oct 1

LHR2:05 pmLondon Heathrow

32h 08m

2 stops

SDF5:13 pmLouisville Intl

$673

Find similar

United Airlines

Feb 4

SDF1:55 pmLouisville Intl

13h 00m

1 stop

LHR7:55 amLondon Heathrow

Feb 18

LHR9:00 amLondon Heathrow

16h 14m

2 stops

SDF8:14 pmLouisville Intl

$677

Find similar

United Airlines

Sep 27

SDF5:48 pmLouisville Intl

34h 47m

2 stops

LHR9:35 amLondon Heathrow

Oct 9

LHR12:15 pmLondon Heathrow

13h 33m

1 stop

SDF8:48 pmLouisville Intl

$701

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Wed 10/1

10:14 am-10:00 am

1 stop18h 46m

London Gatwick

Wed 10/8

2:00 pm-10:47 pm

1 stop13h 47m

$532

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/2

4:20 pm-8:05 am

1 stop10h 45m

London Heathrow

Thu 9/11

11:30 am-11:52 pm

2 stops17h 22m

$567

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 10/22

9:34 am-6:45 am

1 stop16h 11m

London Heathrow

Fri 10/31

6:20 am-9:15 pm

2 stops18h 55m

$568

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 10/22

7:15 pm-1:10 pm

1 stop12h 55m

London Heathrow

Fri 10/31

12:30 pm-10:34 pm

1 stop14h 04m

$576

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 11/17

1:20 pm-7:05 am

1 stop12h 45m

London Heathrow

Mon 11/24

7:20 pm-7:01 pm

2 stops28h 41m

$597

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/2

6:00 pm-11:10 am

1 stop12h 10m

London Heathrow

Thu 9/11

1:05 pm-8:51 pm

1 stop12h 46m

$641

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 10/8

12:54 pm-6:20 am

2 stops12h 26m

London Heathrow

Fri 10/17

12:45 pm-10:34 pm

2 stops14h 49m

$646

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/22

7:36 pm-11:45 am

1 stop11h 09m

London Heathrow

Wed 10/1

2:05 pm-5:13 pm

2 stops32h 08m

$673

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/4

1:55 pm-7:55 am

1 stop13h 00m

London Heathrow

Wed 2/18

9:00 am-8:14 pm

2 stops16h 14m

$677

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Wed 2/4

12:15 pm-2:05 pm

2 stops20h 50m

London City

Wed 2/18

7:15 pm-6:50 pm

2 stops28h 35m

$3,940

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville 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

Prices

Airlines

Layovers

What is the cheapest month to fly to London?

The cheapest month to fly to London from Louisville is in August. Flight prices, which tend to average around $702, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Louisville averaging around $706.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Louisville to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $749. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $949. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Louisville in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $780 when looking at flights departing in the afternoon. Flights to London are more costly at noon, with an average ticket price of $895. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $981 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Louisville for as low as $819 on momondo.

Can stopping save me money on Louisville to London flights?

You could potentially save up to 15% on your flight if you consider stops on a Louisville to London flight.

When to book flights from Louisville to London

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

Estimated round-trip price

Cheap Louisville to London (SDF to LON) flight deals and tips

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

Direct flights	None

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

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How far is Louisville Intl to London by plane?
The straight-line distance from Louisville Intl to London is 4042.6 mi. In terms of flight time, this usually takes a little over 9h 50m.
When did momondo last update prices for flights from Louisville Intl Airport to London?
Prices for flights from Louisville Intl Airport to London refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to London?
As of August 2025, there are 5 operators available to choose from for flights from Louisville Intl Airport to London.
How old do you have to be to fly from Louisville Intl Airport to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to London is American Airlines (49% of total bookings). The next most popular airlines are British Airways (18%), Delta (15%), and United Airlines (12%).

Best airlines flying from Louisville to London

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

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom $580	Free Cancellation	Rating 7.4 658 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $598	Free Cancellation	Rating 6.7 7,291 reviews	Search British Airways flights
United Airlines	PriceFrom $684	Free Cancellation	Rating 7.4 8,930 reviews	Search United Airlines flights
American Airlines	PriceFrom $692	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $700	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights

Hounslow

Gatwick

Luton

Dover

Slough

Milton Keynes

Guildford

Dartford

Crawley

Hayes

Chelmsford

Stansted

Brentwood

Ilford

Folkestone

Colchester

Watford

Richmond

Canterbury

Croydon

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to London for you.

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

Yes. All flights to London from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Louisville to London?

Once all potential Louisville to London 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 Louisville to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Louisville and alert you when they 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.

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Find better results for your trip to the United Kingdom

Cheap flights from Louisville to London from $238

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to London 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.

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Filter for what you want

Filter for what you want

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Find the cheapest flights from Louisville to London (SDF-LON)

Cheap round-trip flights

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Cheap last minute flights

Virgin Atlantic flights from Louisville to London

Our best Virgin Atlantic deals on Louisville to London flight tickets

United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets

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See travel insights to London from

How to get the cheapest flight ticket from Louisville 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

What is the cheapest month to fly to London?

What is the cheapest day to depart on your flight to London?

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

How far in advance should I book a flight to London?

Can stopping save me money on Louisville to London flights?

You could potentially save up to 15% on your flight if you consider stops on a Louisville to London flight.

What is the cheapest airline that flies from Louisville Intl to London?

Virgin Atlantic, United Airlines, and American Airlines are the most popular carriers operating from Louisville Intl to London

What airlines fly to London?

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

Chicago (ORD) was the most common stop: 45% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Louisville to London?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $921.

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

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 10h 39m.

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

Chicago (ORD) has the shortest average layover time for this route: 1h 16m.

When to book flights from Louisville to London

Cheap Louisville to London (SDF to LON) flight deals and tips

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

Direct flights

How far is Louisville Intl to London by plane?

When did momondo last update prices for flights from Louisville Intl Airport to London?

How many operators does momondo search for flights from Louisville Intl Airport to London?

How old do you have to be to fly from Louisville Intl Airport to London?

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

What is the most popular airline from Louisville to London?

Best airlines flying from Louisville to London

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

Traveling to a place near London?

Why use momondo?

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

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

How can momondo help me find flights from Louisville to London?

I’m not ready to book a flight from Louisville 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