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

United Airlines, Delta, and Lufthansa 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.

£256 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.

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

34h 50m1 stop Houston George Bush Intcntl

06:50 - 16:49LHR London Heathrow-SDF Louisville Intl

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

£586United Airlines

Sun, 14 Feb - Wed, 17 Feb

10:03 - 08:35SDF Louisville Intl-LHR London Heathrow

17h 32m1 stop Chicago O'Hare Intl

06:05 - 21:39LHR London Heathrow-SDF Louisville Intl

20h 34m2 stops Madrid Barajas Chicago O'Hare Intl

£636Iberia

Mon, 16 Nov - Tue, 24 Nov

10:37 - 07:10SDF Louisville Intl-LHR London Heathrow

15h 33m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

11:10 - 22:30LHR London Heathrow-SDF Louisville Intl

16h 20m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

£637Multiple Airlines

Tue, 17 Nov - Tue, 24 Nov

13:24 - 06:50SDF Louisville Intl-LHR London Heathrow

12h 26m1 stop Dallas/Fort Worth

10:05 - 21:10LHR London Heathrow-SDF Louisville Intl

16h 05m1 stop Dallas/Fort Worth

£641Finnair

Tue, 17 Nov - Tue, 24 Nov

13:14 - 13:30SDF Louisville Intl-LHR London Heathrow

19h 16m2 stops Chicago O'Hare Intl Madrid Barajas

07:30 - 21:39LHR London Heathrow-SDF Louisville Intl

19h 09m2 stops Madrid Barajas Chicago O'Hare Intl

£642Iberia

Mon, 16 Nov - Tue, 24 Nov

17:57 - 15:50SDF Louisville Intl-LHR London Heathrow

16h 53m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

07:40 - 22:30LHR London Heathrow-SDF Louisville Intl

19h 50m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

£649Lufthansa

Mon, 16 Nov - Wed, 25 Nov

12:41 - 06:55SDF Louisville Intl-LHR London Heathrow

13h 14m1 stop Chicago O'Hare Intl

11:45 - 19:00LHR London Heathrow-SDF Louisville Intl

12h 15m1 stop Charlotte Douglas

£650British Airways

Sun, 14 Feb - Wed, 17 Feb

14:12 - 06:55SDF Louisville Intl-LHR London Heathrow

11h 43m1 stop Washington, D.C. Dulles Intl

06:50 - 17:40LHR London Heathrow-SDF Louisville Intl

15h 50m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£653United Airlines

Sun, 4 Oct - Thu, 15 Oct

13:45 - 21:00SDF Louisville Intl-LHR London Heathrow

50h 15m2 stops Newark Halifax Intl

06:30 - 17:02LHR London Heathrow-SDF Louisville Intl

15h 32m2 stops Frankfurt am Main Chicago O'Hare Intl

£655Multiple Airlines

Fri, 6 Nov - Fri, 20 Nov

11:15 - 06:30SDF Louisville Intl-LHR London Heathrow

14h 15m2 stops Newark Montreal Pierre Elliott Trudeau Intl

06:50 - 17:40LHR London Heathrow-SDF Louisville Intl

15h 50m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£656United Airlines

Wed, 7 Oct - Wed, 14 Oct

Cheap last-minute flights

Enter your travel dates to find the best prices.

09:00 - 06:45SDF Louisville Intl-LHR London Heathrow

16h 45m1 stop Chicago O'Hare Intl

10:00 - 22:15LHR London Heathrow-SDF Louisville Intl

17h 15m1 stop Houston George Bush Intcntl

£837United Airlines

Tue, 1 Sep - Mon, 7 Sep

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

10h 10m1 stop Newark

17:55 - 22:59LHR London Heathrow-SDF Louisville Intl

34h 04m2 stops Brussels Bruxelles-National Newark

£873United Airlines

Sat, 29 Aug - Mon, 31 Aug

19:18 - 11:15SDF Louisville Intl-LHR London Heathrow

10h 57m1 stop Chicago O'Hare Intl

10:05 - 18:29LHR London Heathrow-SDF Louisville Intl

13h 24m1 stop Boston Logan Intl

£876American Airlines

Sat, 29 Aug - Sat, 5 Sep

19:18 - 11:15SDF Louisville Intl-LHR London Heathrow

10h 57m1 stop Chicago O'Hare Intl

10:05 - 18:29LHR London Heathrow-SDF Louisville Intl

13h 24m1 stop Boston Logan Intl

£876American Airlines

Sat, 29 Aug - Sat, 5 Sep

07:25 - 07:45SDF Louisville Intl-LHR London Heathrow

19h 20m1 stop Houston George Bush Intcntl

10:00 - 22:15LHR London Heathrow-SDF Louisville Intl

17h 15m1 stop Houston George Bush Intcntl

£878United Airlines

Mon, 31 Aug - Mon, 7 Sep

10:05 - 08:35SDF Louisville Intl-LHR London Heathrow

17h 30m2 stops Washington, D.C. Dulles Intl Ottawa

12:40 - 12:22LHR London Heathrow-SDF Louisville Intl

28h 42m2 stops Halifax Intl Newark

£905Air Canada

Sat, 29 Aug - Sat, 5 Sep

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

10h 10m1 stop Newark

14:05 - 14:37LHR London Heathrow-SDF Louisville Intl

29h 32m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

£907United Airlines

Sat, 29 Aug - Sat, 5 Sep

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

10h 10m1 stop Newark

14:05 - 14:37LHR London Heathrow-SDF Louisville Intl

29h 32m2 stops Montreal Pierre Elliott Trudeau Intl Washington, D.C. Dulles Intl

£908United Airlines

Sat, 29 Aug - Sat, 5 Sep

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

10h 10m1 stop Newark

09:30 - 20:13LHR London Heathrow-SDF Louisville Intl

15h 43m1 stop Newark

£923United Airlines

Sat, 29 Aug - Mon, 31 Aug

11:05 - 10:30SDF Louisville Intl-LHR London Heathrow

18h 25m1 stop Chicago O'Hare Intl

16:30 - 21:25LHR London Heathrow-SDF Louisville Intl

33h 55m2 stops Madrid Barajas Chicago O'Hare Intl

£926British Airways

Sun, 30 Aug - Sat, 5 Sep

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Iberia flights from Louisville to London

Our best Iberia deals on Louisville to London flight tickets

Iberia

16 Nov

SDF10:03Louisville Intl

17h 32m

1 stop

LHR08:35London Heathrow

24 Nov

LHR06:05London Heathrow

20h 34m

2 stops

SDF21:39Louisville Intl

£636

Iberia

16 Nov

SDF13:14Louisville Intl

19h 16m

2 stops

LHR13:30London Heathrow

24 Nov

LHR07:30London Heathrow

19h 09m

2 stops

SDF21:39Louisville Intl

£642

Iberia

11 Nov

SDF13:14Louisville Intl

14h 21m

1 stop

LHR08:35London Heathrow

23 Nov

LHR19:40London Heathrow

30h 59m

2 stops

SDF21:39Louisville Intl

£671

Lufthansa flights from Louisville to London

Our best Lufthansa deals on Louisville to London flight tickets

Lufthansa

16 Nov

SDF17:57Louisville Intl

16h 53m

2 stops

LHR15:50London Heathrow

25 Nov

LHR07:40London Heathrow

19h 50m

2 stops

SDF22:30Louisville Intl

£649

Lufthansa

11 Nov

SDF14:11Louisville Intl

15h 34m

2 stops

LHR10:45London Heathrow

23 Nov

LHR19:30London Heathrow

28h 02m

2 stops

SDF18:32Louisville Intl

£670

Lufthansa

2 Dec

SDF14:00Louisville Intl

10h 55m

1 stop

LHR05:55London Heathrow

14 Dec

LHR11:10London Heathrow

17h 39m

1 stop

SDF23:49Louisville Intl

£674

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 14/2

15:50-07:40

1 stop34h 50m

London Heathrow

Wed 17/2

06:50-16:49

2 stops14h 59m

£586

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 16/11

10:03-08:35

1 stop17h 32m

London Heathrow

Tue 24/11

06:05-21:39

2 stops20h 34m

£636

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 17/11

10:37-07:10

2 stops15h 33m

London Heathrow

Tue 24/11

11:10-22:30

2 stops16h 20m

£636

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 17/11

13:24-06:50

1 stop12h 26m

London Heathrow

Tue 24/11

10:05-21:10

1 stop16h 05m

£641

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 16/11

13:14-13:30

2 stops19h 16m

London Heathrow

Tue 24/11

07:30-21:39

2 stops19h 09m

£642

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 16/11

17:57-15:50

2 stops16h 53m

London Heathrow

Wed 25/11

07:40-22:30

2 stops19h 50m

£649

Fastest return journey

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 14/2

12:41-06:55

1 stop13h 14m

London Heathrow

Wed 17/2

11:45-19:00

1 stop12h 15m

£650

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 4/10

14:12-06:55

1 stop11h 43m

London Heathrow

Thu 15/10

06:50-17:40

2 stops15h 50m

£653

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Fri 6/11

13:45-21:00

2 stops50h 15m

London Heathrow

Fri 20/11

06:30-17:02

2 stops15h 32m

£655

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 7/10

11:15-06:30

2 stops14h 15m

London Heathrow

Wed 14/10

06:50-17:40

2 stops15h 50m

£656

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 £504 to £823.
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 November. Flight prices, which tend to average around £551, 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 £568.

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 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	£256
Fastest flight time	10h 10m
Direct flights	None

The best one-way flight to London from Louisville in the past 72 hours is £256. 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 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?
There are 4042.6 mi between Louisville Intl and London. By plane, this route typically takes 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 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

Guildford

Bedford

Harlow

Colchester

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 £256

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 2/12. 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

Lufthansa flights from Louisville to London

Our best Lufthansa 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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