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

Washington, D.C. (IAD) was the most common stop: 75% 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 $771.

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

United Airlines, British Airways, and Delta are the most popular carriers operating from Louisville Intl to London

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 30m.

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

Washington, D.C. (IAD) has the shortest average layover time for this route: 2h 27m.

What airlines fly to London?

British Airways, American Airlines and Delta 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 57% of people opting to fly with this airline when traveling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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 2026, 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.

$324 Cheap Flights from Louisville to London in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:50 pm - 7:40 amSDF Louisville Intl-LHR London Heathrow

34h 50m1 stop Houston George Bush Intcntl

6:50 am - 4:49 pmLHR London Heathrow-SDF Louisville Intl

14h 59m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$796United Airlines

Sun, Jan 10 - Wed, Jan 13

10:56 am - 10:00 amSDF Louisville Intl-LGW London Gatwick

42h 04m2 stops Raleigh-Durham Orlando

2:00 pm - 3:06 pmLGW London Gatwick-SDF Louisville Intl

30h 06m1 stop Orlando

$850Multiple Airlines

Sat, Sep 19 - Fri, Oct 2

5:59 pm - 12:15 pmSDF Louisville Intl-LHR London Heathrow

13h 16m1 stop Chicago O'Hare Intl

6:15 am - 9:35 pmLHR London Heathrow-SDF Louisville Intl

20h 20m2 stops Madrid Barajas Chicago O'Hare Intl

$853Iberia

Mon, Sep 21 - Tue, Oct 6

3:30 pm - 7:40 amSDF Louisville Intl-LHR London Heathrow

35h 10m1 stop Houston George Bush Intcntl

6:50 am - 11:49 pmLHR London Heathrow-SDF Louisville Intl

21h 59m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$881United Airlines

Fri, Dec 4 - Mon, Dec 7

1:14 pm - 6:55 amSDF Louisville Intl-LHR London Heathrow

12h 41m1 stop Chicago O'Hare Intl

8:20 am - 6:13 pmLHR London Heathrow-SDF Louisville Intl

14h 53m1 stop Dallas/Fort Worth

$896American Airlines

Mon, Nov 16 - Wed, Nov 25

5:36 pm - 9:35 amSDF Louisville Intl-LHR London Heathrow

10h 59m1 stop Boston Logan Intl

12:30 pm - 7:28 pmLHR London Heathrow-SDF Louisville Intl

11h 58m1 stop Charlotte Douglas

$896American Airlines

Wed, Sep 30 - Tue, Oct 6

6:14 pm - 11:35 amSDF Louisville Intl-LHR London Heathrow

12h 21m1 stop Chicago O'Hare Intl

11:00 am - 9:35 pmLHR London Heathrow-SDF Louisville Intl

15h 35m1 stop Chicago O'Hare Intl

$908British Airways

Sun, Jan 10 - Wed, Jan 13

4:14 pm - 10:00 amSDF Louisville Intl-LHR London Heathrow

12h 46m1 stop Dallas/Fort Worth

3:00 pm - 11:35 pmLHR London Heathrow-SDF Louisville Intl

37h 35m2 stops Madrid Barajas Dallas/Fort Worth

$919British Airways

Wed, Jan 20 - Mon, Jan 25

8:09 am - 7:15 amSDF Louisville Intl-LHR London Heathrow

18h 06m1 stop Atlanta Hartsfield-Jackson

8:40 am - 8:37 pmLHR London Heathrow-SDF Louisville Intl

16h 57m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$921Delta

Mon, Sep 21 - Fri, Oct 2

2:47 pm - 7:10 amSDF Louisville Intl-LHR London Heathrow

11h 23m1 stop Detroit Metropolitan Wayne County

9:55 am - 9:59 pmLHR London Heathrow-SDF Louisville Intl

17h 04m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$921Delta

Mon, Sep 21 - Fri, Oct 2

Cheap last minute flights

Enter your travel dates to find the best prices.

11:05 am - 7:55 amSDF Louisville Intl-LHR London Heathrow

15h 50m1 stop Chicago O'Hare Intl

6:15 am - 9:25 pmLHR London Heathrow-SDF Louisville Intl

20h 10m2 stops Madrid Barajas Chicago O'Hare Intl

$1,023Iberia

Wed, Aug 26 - Wed, Sep 2

11:05 am - 7:55 amSDF Louisville Intl-LHR London Heathrow

15h 50m1 stop Chicago O'Hare Intl

6:15 am - 9:25 pmLHR London Heathrow-SDF Louisville Intl

20h 10m2 stops Madrid Barajas Chicago O'Hare Intl

$1,024Iberia

Wed, Aug 26 - Wed, Sep 2

12:32 pm - 7:50 amSDF Louisville Intl-LHR London Heathrow

14h 18m1 stop Philadelphia

9:15 am - 5:59 pmLHR London Heathrow-SDF Louisville Intl

13h 44m1 stop Charlotte Douglas

$1,057American Airlines

Wed, Aug 26 - Wed, Sep 2

12:32 pm - 7:50 amSDF Louisville Intl-LHR London Heathrow

14h 18m1 stop Philadelphia

9:15 am - 5:59 pmLHR London Heathrow-SDF Louisville Intl

13h 44m1 stop Charlotte Douglas

$1,058American Airlines

Wed, Aug 26 - Wed, Sep 2

10:23 am - 6:45 amSDF Louisville Intl-LHR London Heathrow

15h 22m1 stop Chicago O'Hare Intl

11:05 am - 5:38 pmLHR London Heathrow-SDF Louisville Intl

35h 33m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$1,071United Airlines

Wed, Aug 26 - Mon, Sep 7

2:36 pm - 6:55 amSDF Louisville Intl-LHR London Heathrow

11h 19m1 stop Charlotte Douglas

5:10 pm - 9:25 pmLHR London Heathrow-SDF Louisville Intl

33h 15m2 stops Madrid Barajas Chicago O'Hare Intl

$1,072British Airways

Wed, Aug 26 - Mon, Sep 7

2:34 pm - 9:25 amSDF Louisville Intl-LGW London Gatwick

13h 51m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

10:25 am - 10:08 pmLGW London Gatwick-SDF Louisville Intl

16h 43m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$1,107Delta

Wed, Aug 26 - Wed, Sep 2

2:34 pm - 9:25 amSDF Louisville Intl-LGW London Gatwick

13h 51m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

10:25 am - 10:08 pmLGW London Gatwick-SDF Louisville Intl

16h 43m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$1,108Delta

Wed, Aug 26 - Wed, Sep 2

1:50 pm - 10:00 amSDF Louisville Intl-LHR London Heathrow

15h 10m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:50 am - 7:06 pmLHR London Heathrow-SDF Louisville Intl

17h 16m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$1,112United Airlines

Wed, Aug 26 - Mon, Sep 7

7:12 pm - 6:55 amSDF Louisville Intl-LHR London Heathrow

30h 43m1 stop Charlotte Douglas

11:30 am - 9:25 pmLHR London Heathrow-SDF Louisville Intl

38h 55m2 stops Madrid Barajas Chicago O'Hare Intl

$1,149British Airways

Sat, Aug 29 - Sat, Sep 5

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United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets

United Airlines

Jan 10

SDF3:50 pmLouisville Intl

34h 50m

1 stop

LHR7:40 amLondon Heathrow

Jan 13

LHR6:50 amLondon Heathrow

14h 59m

2 stops

SDF4:49 pmLouisville Intl

$796

United Airlines

Dec 4

SDF2:11 pmLouisville Intl

35h 59m

2 stops

LHR7:10 amLondon Heathrow

Dec 7

LHR6:50 amLondon Heathrow

19h 12m

2 stops

SDF9:02 pmLouisville Intl

$884

United Airlines

Oct 4

SDF2:12 pmLouisville Intl

11h 43m

1 stop

LHR6:55 amLondon Heathrow

Oct 15

LHR6:50 amLondon Heathrow

15h 50m

2 stops

SDF5:40 pmLouisville Intl

$888

Finnair flights from Louisville to London

Our best Finnair deals on Louisville to London flight tickets

Finnair

Nov 10

SDF1:22 pmLouisville Intl

17h 38m

1 stop

LHR12:00 pmLondon Heathrow

Nov 17

LHR11:55 amLondon Heathrow

14h 15m

1 stop

SDF9:10 pmLouisville Intl

$870

Finnair

Oct 20

SDF1:21 pmLouisville Intl

14h 44m

1 stop

LHR9:05 amLondon Heathrow

Oct 30

LHR8:20 amLondon Heathrow

17h 05m

1 stop

SDF9:25 pmLouisville Intl

$883

Finnair

Oct 22

SDF5:19 pmLouisville Intl

12h 31m

1 stop

LHR10:50 amLondon Heathrow

Oct 29

LHR10:05 amLondon Heathrow

15h 19m

1 stop

SDF9:24 pmLouisville Intl

$918

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 1/10

3:50 pm-7:40 am

1 stop34h 50m

London Heathrow

Wed 1/13

6:50 am-4:49 pm

2 stops14h 59m

$796

LouisvilleLondon

SDF Louisville Intl - LGW London Gatwick

SDFLGW

Louisville Intl

Sat 9/19

10:56 am-10:00 am

2 stops42h 04m

London Gatwick

Fri 10/2

2:00 pm-3:06 pm

1 stop30h 06m

$850

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 9/21

5:59 pm-12:15 pm

1 stop13h 16m

London Heathrow

Tue 10/6

6:15 am-9:35 pm

2 stops20h 20m

$853

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Fri 12/4

3:30 pm-7:40 am

1 stop35h 10m

London Heathrow

Mon 12/7

6:50 am-11:49 pm

2 stops21h 59m

$881

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 11/16

1:14 pm-6:55 am

1 stop12h 41m

London Heathrow

Wed 11/25

8:20 am-6:13 pm

1 stop14h 53m

$896

Quickest round-trip

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 9/30

5:36 pm-9:35 am

1 stop10h 59m

London Heathrow

Tue 10/6

12:30 pm-7:28 pm

1 stop11h 58m

$896

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 1/10

6:14 pm-11:35 am

1 stop12h 21m

London Heathrow

Wed 1/13

11:00 am-9:35 pm

1 stop15h 35m

$908

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 1/20

4:14 pm-10:00 am

1 stop12h 46m

London Heathrow

Mon 1/25

3:00 pm-11:35 pm

2 stops37h 35m

$919

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 9/21

8:09 am-7:15 am

1 stop18h 06m

London Heathrow

Fri 10/2

8:40 am-8:37 pm

2 stops16h 57m

$921

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 9/21

2:47 pm-7:10 am

1 stop11h 23m

London Heathrow

Fri 10/2

9:55 am-9:59 pm

2 stops17h 04m

$921

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 typical price of a round-trip flight between Louisville and London?

Prices are currently low for flights on this route.

Typical prices usually range from $854 to $1,146.
The lowest price recently found on this route was $796.

What is the cheapest month to fly to London?

The cheapest month to fly to London from Louisville is in November. Flight prices, which tend to average around $749, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Louisville averaging around $772.

Can stopping save me money on Louisville to London flights?

You could potentially save up to 4% on your flight if you consider stops on a Louisville to London flight.

How have Louisville to London flight prices changed over time?

As of August 2026, prices for Louisville to London flights are approximately 33% cheaper when compared to flights at the same time last year.

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

Best Price Found	$324
Fastest flight time	10h 10m
Direct flights	None

The best one-way flight to London from Louisville in the past 72 hours is $324. The best round-trip flight deal from Louisville to London found on momondo in the last 72 hours is $796.

The fastest flight from Louisville to London takes 10h 10m

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

Search flight deals

Frequently asked questions about flying from Louisville to London

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 10h 10m.
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 2026, 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 British Airways (30% of total bookings). The next most popular airlines are American Airlines (23%), United Airlines (21%), and Delta (15%).

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
Delta	PriceFrom $588	Free Cancellation	Rating 7.8 8,518 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $598	Free Cancellation	Rating 7.4 695 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $606	Free Cancellation	Rating 6.7 8,187 reviews	Search British Airways flights
American Airlines	PriceFrom $676	Free Cancellation	Rating 7.1 11,982 reviews	Search American Airlines flights
United Airlines	PriceFrom $705	Free Cancellation	Rating 7.4 10,115 reviews	Search United Airlines flights

Hounslow

Gatwick

Milton Keynes

Hayes

Wembley

Luton

Croydon

Dover

Richmond

Stansted

Kingston upon Thames

Harrow

Cobham

Slough

Watford

Eastbourne

Uxbridge

Worthing

Romford

Ilford

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

Nearby airports

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Other United Kingdom destinations

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Complete your trip

Feeling lucky

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

Cheap flights from Louisville to London from $324

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 10/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Louisville to London

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Big names and deals

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United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets

Finnair flights from Louisville to London

Our best Finnair deals on Louisville to London flight tickets

momondo Fare Finder

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

See travel insights to London from

How to get the cheapest flight ticket from Louisville to London

What is the typical price of a round-trip flight between Louisville and London?

What is the cheapest month to fly to London?

Can stopping save me money on Louisville to London flights?

How have Louisville to London flight prices changed over time?

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

What airlines fly to London?

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

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

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

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

When to book flights from Louisville to London

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying 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?

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

Fly your favorite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Louisville

According to popular flight searches on momondo this year

Complete your trip to London

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