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

British Airways, Air Canada, and Aer Lingus are the most popular carriers operating from Louisville Intl to London

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

Prices for flights from Louisville Intl Airport to London are updated daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 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.

£240 Cheap Flights from Louisville to London in 2026/27

Find the cheapest flights from Louisville to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:50 - 07:40SDF Louisville Intl-LHR London Heathrow

34h 50m1 stop Houston George Bush Intcntl

06:50 - 17:07LHR London Heathrow-SDF Louisville Intl

15h 17m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£570United Airlines

Tue, 2 Mar - Fri, 5 Mar

15:50 - 07:40SDF Louisville Intl-LHR London Heathrow

34h 50m1 stop Houston George Bush Intcntl

06:50 - 17:07LHR London Heathrow-SDF Louisville Intl

15h 17m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£573United Airlines

Tue, 2 Mar - Fri, 5 Mar

09:00 - 21:00SDF Louisville Intl-LHR London Heathrow

31h 00m2 stops Chicago O'Hare Intl Ottawa

06:50 - 17:07LHR London Heathrow-SDF Louisville Intl

15h 17m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£654United Airlines

Tue, 2 Mar - Fri, 5 Mar

08:50 - 21:00SDF Louisville Intl-LHR London Heathrow

31h 10m2 stops Chicago O'Hare Intl Ottawa

09:00 - 20:29LHR London Heathrow-SDF Louisville Intl

16h 29m2 stops Zurich Chicago O'Hare Intl

£658United Airlines

Tue, 19 Jan - Tue, 2 Feb

09:00 - 21:00SDF Louisville Intl-LHR London Heathrow

31h 00m2 stops Chicago O'Hare Intl Ottawa

06:50 - 17:07LHR London Heathrow-SDF Louisville Intl

15h 17m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£659United Airlines

Tue, 2 Mar - Fri, 5 Mar

08:30 - 21:00SDF Louisville Intl-LHR London Heathrow

31h 30m2 stops Chicago O'Hare Intl Ottawa

06:50 - 23:55LHR London Heathrow-SDF Louisville Intl

22h 05m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£659United Airlines

Tue, 2 Mar - Fri, 5 Mar

10:13 - 08:35SDF Louisville Intl-LHR London Heathrow

17h 22m1 stop Chicago O'Hare Intl

06:15 - 21:37LHR London Heathrow-SDF Louisville Intl

20h 22m2 stops Madrid Barajas Chicago O'Hare Intl

£660Iberia

Wed, 18 Nov - Wed, 25 Nov

17:43 - 12:00SDF Louisville Intl-LHR London Heathrow

13h 17m1 stop Chicago O'Hare Intl

09:00 - 20:29LHR London Heathrow-SDF Louisville Intl

16h 29m2 stops Zurich Chicago O'Hare Intl

£661United Airlines

Tue, 19 Jan - Tue, 2 Feb

13:49 - 08:25SDF Louisville Intl-LHR London Heathrow

13h 36m1 stop Newark

11:10 - 23:55LHR London Heathrow-SDF Louisville Intl

16h 45m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

£662United Airlines

Mon, 8 Mar - Thu, 18 Mar

13:55 - 10:05SDF Louisville Intl-LHR London Heathrow

15h 10m2 stops Chicago O'Hare Intl Brussels Bruxelles-National

06:50 - 19:34LHR London Heathrow-SDF Louisville Intl

16h 44m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

£664United Airlines

Mon, 8 Mar - Thu, 18 Mar

Cheap last-minute flights

Enter your travel dates to find the best prices.

12:45 - 10:25SDF Louisville Intl-LHR London Heathrow

17h 40m1 stop Chicago O'Hare Intl

06:05 - 21:36LHR London Heathrow-SDF Louisville Intl

20h 31m2 stops Madrid Barajas Chicago O'Hare Intl

£698Iberia

Mon, 26 Oct - Tue, 3 Nov

17:35 - 08:35SDF Louisville Intl-LHR London Heathrow

11h 00m1 stop Chicago O'Hare Intl

07:30 - 21:37LHR London Heathrow-SDF Louisville Intl

19h 07m2 stops Madrid Barajas Chicago O'Hare Intl

£706Iberia

Wed, 28 Oct - Fri, 13 Nov

14:10 - 07:55SDF Louisville Intl-LHR London Heathrow

13h 45m1 stop Chicago O'Hare Intl

06:50 - 20:34LHR London Heathrow-SDF Louisville Intl

18h 44m2 stops Brussels Bruxelles-National Newark

£718United Airlines

Wed, 28 Oct - Fri, 13 Nov

18:00 - 12:00SDF Louisville Intl-LHR London Heathrow

14h 00m1 stop Charlotte Douglas

09:55 - 17:25LHR London Heathrow-SDF Louisville Intl

12h 30m1 stop Charlotte Douglas

£721American Airlines

Wed, 28 Oct - Fri, 13 Nov

14:10 - 07:55SDF Louisville Intl-LHR London Heathrow

13h 45m1 stop Chicago O'Hare Intl

06:50 - 20:34LHR London Heathrow-SDF Louisville Intl

18h 44m2 stops Brussels Bruxelles-National Newark

£722United Airlines

Wed, 28 Oct - Fri, 13 Nov

15:45 - 10:15SDF Louisville Intl-LHR London Heathrow

14h 30m1 stop Houston George Bush Intcntl

06:50 - 17:02LHR London Heathrow-SDF Louisville Intl

15h 12m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£723United Airlines

Wed, 28 Oct - Fri, 13 Nov

14:10 - 09:10SDF Louisville Intl-LHR London Heathrow

15h 00m2 stops Chicago O'Hare Intl Newark

09:00 - 20:52LHR London Heathrow-SDF Louisville Intl

16h 52m2 stops Zurich Chicago O'Hare Intl

£725United Airlines

Tue, 27 Oct - Tue, 3 Nov

14:11 - 06:40SDF Louisville Intl-LHR London Heathrow

12h 29m1 stop Washington, D.C. Dulles Intl

11:05 - 20:34LHR London Heathrow-SDF Louisville Intl

38h 29m2 stops Brussels Bruxelles-National Newark

£732United Airlines

Mon, 26 Oct - Mon, 2 Nov

06:00 - 07:10SDF Louisville Intl-LHR London Heathrow

21h 10m2 stops Newark Montreal Pierre Elliott Trudeau Intl

09:00 - 23:30LHR London Heathrow-SDF Louisville Intl

43h 30m2 stops Halifax Intl Newark

£733Air Canada

Wed, 28 Oct - Fri, 13 Nov

13:45 - 11:20SDF Louisville Intl-LHR London Heathrow

17h 35m2 stops Newark Toronto Pearson Intl

09:00 - 20:34LHR London Heathrow-SDF Louisville Intl

40h 34m2 stops Halifax Intl Newark

£737Air Canada

Mon, 26 Oct - Tue, 3 Nov

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Iberia flights from Louisville to London

Our best Iberia deals on Louisville to London flight tickets

Iberia

18 Nov

SDF10:13Louisville Intl

17h 22m

1 stop

LHR08:35London Heathrow

25 Nov

LHR06:15London Heathrow

20h 22m

2 stops

SDF21:37Louisville Intl

£660

Iberia

16 Mar

SDF13:10Louisville Intl

15h 25m

1 stop

LHR08:35London Heathrow

17 Apr

LHR07:35London Heathrow

18h 55m

2 stops

SDF21:30Louisville Intl

£691

Iberia

16 Mar

SDF13:10Louisville Intl

15h 25m

1 stop

LHR08:35London Heathrow

17 Apr

LHR07:35London Heathrow

18h 55m

2 stops

SDF21:30Louisville Intl

£692

British Airways flights from Louisville to London

Our best British Airways deals on Louisville to London flight tickets

British Airways

8 Mar

SDF13:10Louisville Intl

12h 45m

1 stop

LHR06:55London Heathrow

18 Mar

LHR11:00London Heathrow

14h 28m

1 stop

SDF21:28Louisville Intl

£672

British Airways

2 Dec

SDF17:30Louisville Intl

10h 45m

1 stop

LHR09:15London Heathrow

15 Dec

LHR07:30London Heathrow

21h 27m

2 stops

SDF23:57Louisville Intl

£676

British Airways

19 Jan

SDF18:29Louisville Intl

12h 06m

1 stop

LHR11:35London Heathrow

2 Feb

LHR11:00London Heathrow

15h 37m

1 stop

SDF21:37Louisville Intl

£680

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

15:50-07:40

1 stop34h 50m

London Heathrow

Fri 5/3

06:50-17:07

2 stops15h 17m

£570

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

15:50-07:40

1 stop34h 50m

London Heathrow

Fri 5/3

06:50-17:07

2 stops15h 17m

£573

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

09:00-21:00

2 stops31h 00m

London Heathrow

Fri 5/3

06:50-17:07

2 stops15h 17m

£654

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 19/1

08:50-21:00

2 stops31h 10m

London Heathrow

Tue 2/2

09:00-20:29

2 stops16h 29m

£658

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

09:00-21:00

2 stops31h 00m

London Heathrow

Fri 5/3

06:50-17:07

2 stops15h 17m

£659

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

08:30-21:00

2 stops31h 30m

London Heathrow

Fri 5/3

06:50-23:55

2 stops22h 05m

£659

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 18/11

10:13-08:35

1 stop17h 22m

London Heathrow

Wed 25/11

06:15-21:37

2 stops20h 22m

£660

Fastest return journey

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 19/1

17:43-12:00

1 stop13h 17m

London Heathrow

Tue 2/2

09:00-20:29

2 stops16h 29m

£661

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 8/3

13:49-08:25

1 stop13h 36m

London Heathrow

Thu 18/3

11:10-23:55

2 stops16h 45m

£662

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 8/3

13:55-10:05

2 stops15h 10m

London Heathrow

Thu 18/3

06:50-19:34

2 stops16h 44m

£664

Flights are sorted by cheapest return 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

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 £757 to £953.
The lowest price recently found on this route was £570.

What is the cheapest month to fly to London?

The cheapest month to fly to London from Louisville is in January. Flight prices, which tend to average around £584, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Louisville averaging around £676.

How have Louisville to London flight prices changed over time?

As of October 2026, prices for Louisville to London flights are approximately 43% 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 return 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	£240
Fastest flight time	10h 40m
Direct flights	None

The best one-way flight to London from Louisville in the past 72 hours is £240. The best return flight deal from Louisville to London found on momondo in the last 72 hours is £570.

The fastest flight from Louisville to London takes 10h 40m

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?
There are 4042.6 mi between Louisville Intl and London. By plane, this route typically takes 10h 40m.
When did momondo last update prices for flights from Louisville Intl Airport to London?
Prices for flights from Louisville Intl Airport to London are updated daily.
How old do you have to be to fly from Louisville Intl Airport to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 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.
What is the most popular airline from Louisville to London?
Based on momondo bookings for flights between Louisville and London, the leading airline is British Airways, making up 100% of the total bookings.

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Luton

Ipswich

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Canterbury

Chichester

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Hayes

Bedford

Worthing

Winchester

Why use momondo?

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

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 London from Louisville.

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

momondo does allow users to show only those flights to London from Louisville which offer a flexible booking policy as well as other useful filters and features.

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?

Yes momondo offers price alerts on flights to London from Louisville. 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, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Cheap flights from Louisville to London from £240

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 31/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Iberia flights from Louisville to London

Our best Iberia deals on Louisville to London flight tickets

British Airways flights from Louisville to London

Our best British Airways deals on Louisville to London flight tickets

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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?

How have Louisville to London flight prices changed over time?

What is the cheapest airline that flies from Louisville Intl 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

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise 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 favourite 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

Complete your trip to London

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