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

British Airways, United Airlines, 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.

£242 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.

09:32 - 10:15SDF Louisville Intl-LHR London Heathrow

20h 43m1 stop Houston George Bush Intcntl

09:00 - 23:55LHR London Heathrow-SDF Louisville Intl

18h 55m2 stops Zurich Chicago O'Hare Intl

£567United Airlines

Sun, 21 Mar - Tue, 23 Mar

05:50 - 07:10SDF Louisville Intl-LHR London Heathrow

21h 20m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl

06:35 - 20:14LHR London Heathrow-SDF Louisville Intl

17h 39m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

£571United Airlines

Sun, 21 Mar - Tue, 23 Mar

15:29 - 07:40SDF Louisville Intl-LHR London Heathrow

35h 11m1 stop Houston George Bush Intcntl

06:50 - 19:28LHR London Heathrow-SDF Louisville Intl

17h 38m2 stops Brussels Bruxelles-National Newark

£574United Airlines

Sun, 14 Feb - Wed, 17 Feb

14:25 - 07:10SDF Louisville Intl-LHR London Heathrow

35h 45m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl

06:50 - 16:32LHR London Heathrow-SDF Louisville Intl

14h 42m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£577United Airlines

Sun, 14 Feb - Wed, 17 Feb

14:25 - 07:10SDF Louisville Intl-LHR London Heathrow

35h 45m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl

06:50 - 16:32LHR London Heathrow-SDF Louisville Intl

14h 42m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

£577United Airlines

Sun, 14 Feb - Wed, 17 Feb

13:11 - 08:35SDF Louisville Intl-LHR London Heathrow

14h 24m1 stop Chicago O'Hare Intl

06:15 - 21:35LHR London Heathrow-SDF Louisville Intl

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

£651Iberia

Mon, 18 Jan - Fri, 29 Jan

09:32 - 07:40SDF Louisville Intl-LHR London Heathrow

18h 08m1 stop Houston George Bush Intcntl

07:40 - 23:55LHR London Heathrow-SDF Louisville Intl

20h 15m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

£655Lufthansa

Sun, 21 Mar - Tue, 23 Mar

13:11 - 11:55SDF Louisville Intl-LHR London Heathrow

17h 44m2 stops Chicago O'Hare Intl Madrid Barajas

06:15 - 21:35LHR London Heathrow-SDF Louisville Intl

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

£657Iberia

Mon, 18 Jan - Fri, 29 Jan

09:00 - 07:10SDF Louisville Intl-LHR London Heathrow

18h 10m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

13:30 - 23:55LHR London Heathrow-SDF Louisville Intl

15h 25m2 stops Frankfurt am Main Chicago O'Hare Intl

£658Multiple Airlines

Wed, 24 Mar - Fri, 2 Apr

07:05 - 07:40SDF Louisville Intl-LHR London Heathrow

20h 35m1 stop Houston George Bush Intcntl

09:00 - 23:55LHR London Heathrow-SDF Louisville Intl

18h 55m2 stops Zurich Chicago O'Hare Intl

£663United Airlines

Sun, 21 Mar - Wed, 24 Mar

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Iberia flights from Louisville to London

Our best Iberia deals on Louisville to London flight tickets

Iberia

18 Jan

SDF13:11Louisville Intl

14h 24m

1 stop

LHR08:35London Heathrow

29 Jan

LHR06:15London Heathrow

20h 20m

2 stops

SDF21:35Louisville Intl

£651

Iberia

18 Jan

SDF13:11Louisville Intl

17h 44m

2 stops

LHR11:55London Heathrow

29 Jan

LHR06:15London Heathrow

20h 20m

2 stops

SDF21:35Louisville Intl

£657

Iberia

30 Mar

SDF13:19Louisville Intl

13h 46m

1 stop

LHR08:05London Heathrow

13 Apr

LHR07:50London Heathrow

18h 40m

2 stops

SDF21:30Louisville Intl

£661

British Airways flights from Louisville to London

Our best British Airways deals on Louisville to London flight tickets

British Airways

21 Mar

SDF20:08Louisville Intl

11h 52m

1 stop

LHR12:00London Heathrow

23 Mar

LHR14:10London Heathrow

12h 55m

1 stop

SDF23:05Louisville Intl

£668

British Airways

13 Mar

SDF20:08Louisville Intl

30h 12m

1 stop

LHR07:20London Heathrow

16 Mar

LHR07:30London Heathrow

20h 12m

2 stops

SDF23:42Louisville Intl

£670

British Airways

24 Mar

SDF13:29Louisville Intl

13h 21m

1 stop

LHR06:50London Heathrow

2 Apr

LHR08:55London Heathrow

13h 46m

1 stop

SDF17:41Louisville Intl

£671

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 21/3

09:32-10:15

1 stop20h 43m

London Heathrow

Tue 23/3

09:00-23:55

2 stops18h 55m

£567

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 21/3

05:50-07:10

2 stops21h 20m

London Heathrow

Tue 23/3

06:35-20:14

2 stops17h 39m

£571

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 14/2

15:29-07:40

1 stop35h 11m

London Heathrow

Wed 17/2

06:50-19:28

2 stops17h 38m

£574

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 14/2

14:25-07:10

2 stops35h 45m

London Heathrow

Wed 17/2

06:50-16:32

2 stops14h 42m

£577

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 14/2

14:25-07:10

2 stops35h 45m

London Heathrow

Wed 17/2

06:50-16:32

2 stops14h 42m

£577

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 18/1

13:11-08:35

1 stop14h 24m

London Heathrow

Fri 29/1

06:15-21:35

2 stops20h 20m

£651

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 21/3

09:32-07:40

1 stop18h 08m

London Heathrow

Tue 23/3

07:40-23:55

2 stops20h 15m

£655

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 18/1

13:11-11:55

2 stops17h 44m

London Heathrow

Fri 29/1

06:15-21:35

2 stops20h 20m

£657

Fastest return journey

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 24/3

09:00-07:10

2 stops18h 10m

London Heathrow

Fri 2/4

13:30-23:55

2 stops15h 25m

£658

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 21/3

07:05-07:40

1 stop20h 35m

London Heathrow

Wed 24/3

09:00-23:55

2 stops18h 55m

£663

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 £805 to £952.
The lowest price recently found on this route was £567.

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 £580, 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 £679.

How have Louisville to London flight prices changed over time?

As of November 2026, prices for Louisville to London flights are approximately 7% 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	£242
Fastest flight time	10h 57m
Direct flights	None

The best one-way flight to London from Louisville in the past 72 hours is £242. The best return flight deal from Louisville to London found on momondo in the last 72 hours is £567.

The fastest flight from Louisville to London takes 10h 57m

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 57m.
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

Ipswich

Slough

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Colchester

Chichester

Hayes

Bedford

Guildford

Winchester

Worthing

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sun 6/12

Sun 13/12

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Nearby airports

Airlines

Cabin classes

Other United Kingdom destinations

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 £242

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 3/5. 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

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

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?

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

Explore popular destinations other users love

According to popular flight searches on momondo this year