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

Iberia, Air Canada, and Delta 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

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.

13:00 - 07:10SDF Louisville Intl-LHR London Heathrow

37h 10m2 stops Newark Montreal Pierre Elliott Trudeau Intl

06:50 - 17:30LHR London Heathrow-SDF Louisville Intl

15h 40m2 stops Brussels Bruxelles-National Newark

£586United 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 - 19:34LHR London Heathrow-SDF Louisville Intl

17h 44m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

£587United Airlines

Tue, 2 Mar - Fri, 5 Mar

13:59 - 06:25SDF Louisville Intl-LHR London Heathrow

11h 26m1 stop Atlanta Hartsfield-Jackson

06:20 - 22:51LHR London Heathrow-SDF Louisville Intl

20h 31m2 stops Paris Charles de Gaulle Minneapolis St Paul

£588Delta

Tue, 20 Oct - Fri, 30 Oct

14:20 - 07:10SDF Louisville Intl-LHR London Heathrow

35h 50m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl

06:50 - 20:14LHR London Heathrow-SDF Louisville Intl

18h 24m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£590United Airlines

Tue, 2 Mar - Fri, 5 Mar

14:47 - 10:20SDF Louisville Intl-LHR London Heathrow

14h 33m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

08:40 - 19:14LHR London Heathrow-SDF Louisville Intl

15h 34m2 stops Amsterdam Schiphol Minneapolis St Paul

£591Delta

Mon, 21 Sep - Fri, 2 Oct

09:53 - 07:10SDF Louisville Intl-LHR London Heathrow

16h 17m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

06:20 - 22:51LHR London Heathrow-SDF Louisville Intl

20h 31m2 stops Paris Charles de Gaulle Minneapolis St Paul

£592Delta

Tue, 20 Oct - Fri, 30 Oct

12:40 - 10:20SDF Louisville Intl-LHR London Heathrow

16h 40m1 stop Minneapolis St Paul

11:20 - 21:13LHR London Heathrow-SDF Louisville Intl

13h 53m1 stop Detroit Metropolitan Wayne County

£593Delta

Tue, 20 Oct - Fri, 30 Oct

10:43 - 06:25SDF Louisville Intl-LHR London Heathrow

14h 42m1 stop Atlanta Hartsfield-Jackson

06:30 - 16:51LHR London Heathrow-SDF Louisville Intl

15h 21m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

£595Virgin Atlantic

Wed, 10 Feb - Wed, 24 Feb

12:53 - 07:15SDF Louisville Intl-LHR London Heathrow

13h 22m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

11:45 - 21:41LHR London Heathrow-SDF Louisville Intl

14h 56m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

£598Virgin Atlantic

Wed, 10 Feb - Wed, 24 Feb

12:53 - 07:50SDF Louisville Intl-LHR London Heathrow

13h 57m1 stop Atlanta Hartsfield-Jackson

11:20 - 21:41LHR London Heathrow-SDF Louisville Intl

15h 21m1 stop Detroit Metropolitan Wayne County

£600Virgin Atlantic

Wed, 10 Feb - Wed, 24 Feb

Cheap last-minute flights

Enter your travel dates to find the best prices.

12:39 - 06:45SDF Louisville Intl-LHR London Heathrow

13h 06m1 stop Boston Logan Intl

08:40 - 21:30LHR London Heathrow-SDF Louisville Intl

17h 50m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

£588Delta

Tue, 15 Sep - Tue, 22 Sep

14:47 - 10:20SDF Louisville Intl-LHR London Heathrow

14h 33m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

11:30 - 23:59LHR London Heathrow-SDF Louisville Intl

17h 29m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

£591Delta

Tue, 15 Sep - Tue, 22 Sep

12:39 - 06:45SDF Louisville Intl-LHR London Heathrow

13h 06m1 stop Boston Logan Intl

11:15 - 19:10LHR London Heathrow-SDF Louisville Intl

12h 55m1 stop Atlanta Hartsfield-Jackson

£593Delta

Tue, 15 Sep - Tue, 22 Sep

10:29 - 10:50SDF Louisville Intl-LGW London Gatwick

19h 21m2 stops Chicago O'Hare Intl Madrid Barajas

20:40 - 22:33LGW London Gatwick-SDF Louisville Intl

30h 53m2 stops Madrid Barajas Chicago O'Hare Intl

£654Iberia

Wed, 16 Sep - Wed, 23 Sep

10:29 - 10:35SDF Louisville Intl-LHR London Heathrow

19h 06m2 stops Chicago O'Hare Intl Madrid Barajas

09:45 - 22:33LHR London Heathrow-SDF Louisville Intl

17h 48m1 stop Chicago O'Hare Intl

£679Iberia

Wed, 16 Sep - Wed, 23 Sep

10:29 - 11:15SDF Louisville Intl-LHR London Heathrow

19h 46m1 stop Chicago O'Hare Intl

09:15 - 19:10LHR London Heathrow-SDF Louisville Intl

14h 55m1 stop Charlotte Douglas

£700British Airways

Wed, 16 Sep - Wed, 23 Sep

11:15 - 08:35SDF Louisville Intl-LHR London Heathrow

16h 20m2 stops Newark Ottawa

06:50 - 20:09LHR London Heathrow-SDF Louisville Intl

18h 19m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

£782United Airlines

Wed, 16 Sep - Wed, 23 Sep

12:05 - 14:40SDF Louisville Intl-LGW London Gatwick

21h 35m2 stops Denver Intl Reykjavik Keflavik Intl

15:40 - 23:15LGW London Gatwick-SDF Louisville Intl

36h 35m2 stops Reykjavik Keflavik Intl Baltimore/Washington

£800Multiple Airlines

Tue, 15 Sep - Sat, 19 Sep

10:05 - 08:40SDF Louisville Intl-LCY London City

17h 35m2 stops Washington, D.C. Dulles Intl Frankfurt am Main

09:15 - 20:09LCY London City-SDF Louisville Intl

15h 54m2 stops Frankfurt am Main Newark

£800Lufthansa

Tue, 15 Sep - Tue, 22 Sep

06:15 - 21:25SDF Louisville Intl-LHR London Heathrow

10h 10m1 stop Newark

08:30 - 19:11LHR London Heathrow-SDF Louisville Intl

15h 41m2 stops Toronto Pearson Intl Chicago O'Hare Intl

£802United Airlines

Tue, 15 Sep - Wed, 7 Oct

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Iberia flights from Louisville to London

Our best Iberia deals on Louisville to London flight tickets

Iberia

20 Oct

SDF18:07Louisville Intl

11h 43m

1 stop

LHR10:50London Heathrow

30 Oct

LHR06:15London Heathrow

19h 20m

2 stops

SDF21:35Louisville Intl

£638

Iberia

20 Oct

SDF12:45Louisville Intl

16h 50m

2 stops

LHR10:35London Heathrow

30 Oct

LHR06:15London Heathrow

19h 20m

2 stops

SDF21:35Louisville Intl

£644

Iberia

28 Oct

SDF17:35Louisville Intl

12h 50m

1 stop

LHR10:25London Heathrow

3 Nov

LHR19:40London Heathrow

30h 56m

2 stops

SDF21:36Louisville Intl

£646

British Airways flights from Louisville to London

Our best British Airways deals on Louisville to London flight tickets

British Airways

28 Oct

SDF18:00Louisville Intl

14h 00m

1 stop

LHR12:00London Heathrow

3 Nov

LHR19:05London Heathrow

31h 41m

2 stops

SDF21:46Louisville Intl

£652

British Airways

21 Oct

SDF18:08Louisville Intl

10h 27m

1 stop

LHR09:35London Heathrow

28 Oct

LHR16:35London Heathrow

33h 00m

2 stops

SDF21:35Louisville Intl

£652

British Airways

16 Nov

SDF18:31Louisville Intl

12h 04m

1 stop

LHR11:35London Heathrow

24 Nov

LHR14:45London Heathrow

14h 30m

1 stop

SDF00:15Louisville Intl

£661

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

13:00-07:10

2 stops37h 10m

London Heathrow

Fri 5/3

06:50-17:30

2 stops15h 40m

£586

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

06:50-19:34

2 stops17h 44m

£587

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 20/10

13:59-06:25

1 stop11h 26m

London Heathrow

Fri 30/10

06:20-22:51

2 stops20h 31m

£588

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 2/3

14:20-07:10

2 stops35h 50m

London Heathrow

Fri 5/3

06:50-20:14

2 stops18h 24m

£590

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 21/9

14:47-10:20

2 stops14h 33m

London Heathrow

Fri 2/10

08:40-19:14

2 stops15h 34m

£591

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 20/10

09:53-07:10

2 stops16h 17m

London Heathrow

Fri 30/10

06:20-22:51

2 stops20h 31m

£592

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 20/10

12:40-10:20

1 stop16h 40m

London Heathrow

Fri 30/10

11:20-21:13

1 stop13h 53m

£593

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 10/2

10:43-06:25

1 stop14h 42m

London Heathrow

Wed 24/2

06:30-16:51

2 stops15h 21m

£595

Fastest return journey

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 10/2

12:53-07:15

2 stops13h 22m

London Heathrow

Wed 24/2

11:45-21:41

2 stops14h 56m

£598

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 10/2

12:53-07:50

1 stop13h 57m

London Heathrow

Wed 24/2

11:20-21:41

1 stop15h 21m

£600

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 typical for flights on this route.

Typical prices usually range from £515 to £915.
The lowest price recently found on this route was £586.

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 £570, are often lower during this time because this is during the off-season. The month of November is another great option to travel to London, with average flight prices from Louisville averaging around £590.

How have Louisville to London flight prices changed over time?

As of September 2026, prices for Louisville to London flights are approximately 3% 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	12h 26m
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 £586.

The fastest flight from Louisville to London takes 12h 26m

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 12h 26m.
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.

Eastbourne

Wembley

Gatwick

Milton Keynes

Southend-on-Sea

Luton

Slough

Ipswich

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Chichester

Hayes

Bedford

Guildford

Colchester

Harlow

Chelmsford

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 26/9. 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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