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

American Airlines, Lufthansa, and United Airlines are the most popular carriers operating from Louisville Intl to London

Which airlines fly to London?

British Airways, Virgin Atlantic and Iberia 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 40% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 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 are updated daily.

How many operators does momondo search for flights from Louisville Intl Airport to London?

There are 2 operators available for flights from Louisville Intl Airport to London as of November 2025.

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.

£169 Cheap Flights from Louisville to London in 2025/26

Q: 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 £744 to £1,102. The lowest price recently found on this route was £428.

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Find the cheapest flights from Louisville to London

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One-way

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14:10 - 06:40SDF-LHR

11h 30m1 stop

11:10 - 22:30LHR-SDF

16h 20m2 stops

£428Lufthansa

Find Deal

Fri, 9 Jan - Tue, 13 Jan

13:50 - 06:20SDF-LHR

11h 30m1 stop

07:25 - 17:37LHR-SDF

15h 12m1 stop

£460Lufthansa

Find Deal

Fri, 9 Jan - Tue, 13 Jan

14:05 - 11:15SDF-LHR

16h 10m1 stop

11:10 - 23:59LHR-SDF

17h 49m2 stops

£468Lufthansa

Find Deal

Wed, 11 Feb - Wed, 18 Feb

08:30 - 07:10SDF-LHR

17h 40m2 stops

11:10 - 22:30LHR-SDF

16h 20m2 stops

£471Multiple Airlines

Find Deal

Fri, 9 Jan - Tue, 13 Jan

13:45 - 20:35SDF-LHR

49h 50m2 stops

08:45 - 22:30LHR-SDF

18h 45m2 stops

£472Multiple Airlines

Find Deal

Tue, 6 Jan - Thu, 15 Jan

13:45 - 10:25SDF-LHR

15h 40m2 stops

08:45 - 22:30LHR-SDF

18h 45m2 stops

£474Lufthansa

Find Deal

Tue, 13 Jan - Tue, 27 Jan

14:05 - 07:55SDF-LHR

12h 50m1 stop

06:50 - 20:28LHR-SDF

18h 38m2 stops

£478United Airlines

Find Deal

Thu, 15 Jan - Thu, 22 Jan

12:22 - 09:30SDF-LCY

16h 08m2 stops

13:45 - 17:01LCY-SDF

32h 16m2 stops

£506Delta

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Wed, 28 Jan - Sun, 1 Feb

08:58 - 06:45SDF-LGW

16h 47m2 stops

12:20 - 00:14LGW-SDF

16h 54m2 stops

£572American Airlines

Find Deal

Mon, 13 Apr - Mon, 27 Apr

06:00 - 07:30SDF-LGW

20h 30m2 stops

11:20 - 22:12LGW-SDF

39h 52m2 stops

£639American Airlines

Find Deal

Fri, 23 Jan - Tue, 27 Jan

Lufthansa flights from Louisville to London

Our best Lufthansa deals on Louisville to London flight tickets

Lufthansa

9 Jan

SDF14:10Louisville Intl

11h 30m

1 stop

LHR06:40London Heathrow

13 Jan

LHR11:10London Heathrow

16h 20m

2 stops

SDF22:30Louisville Intl

£428

Find similar

Lufthansa

9 Jan

SDF13:50Louisville Intl

11h 30m

1 stop

LHR06:20London Heathrow

13 Jan

LHR07:25London Heathrow

15h 12m

1 stop

SDF17:37Louisville Intl

£460

Find similar

Lufthansa

11 Feb

SDF14:05Louisville Intl

16h 10m

1 stop

LHR11:15London Heathrow

18 Feb

LHR11:10London Heathrow

17h 49m

2 stops

SDF23:59Louisville Intl

£468

Find similar

United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets

United Airlines

15 Jan

SDF14:05Louisville Intl

10h 50m

1 stop

LHR05:55London Heathrow

22 Jan

LHR06:50London Heathrow

18h 38m

2 stops

SDF20:28Louisville Intl

£478

Find similar

United Airlines

15 Jan

SDF14:05Louisville Intl

10h 50m

1 stop

LHR05:55London Heathrow

22 Jan

LHR10:25London Heathrow

15h 03m

1 stop

SDF20:28Louisville Intl

£500

Find similar

United Airlines

2 Dec

SDF14:05Louisville Intl

11h 35m

1 stop

LHR06:40London Heathrow

23 Dec

LHR10:25London Heathrow

15h 07m

1 stop

SDF20:32Louisville Intl

£544

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/1

14:10-06:40

1 stop11h 30m

London Heathrow

Tue 13/1

11:10-22:30

2 stops16h 20m

£428

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/1

13:50-06:20

1 stop11h 30m

London Heathrow

Tue 13/1

07:25-17:37

1 stop15h 12m

£460

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 11/2

14:05-11:15

1 stop16h 10m

London Heathrow

Wed 18/2

11:10-23:59

2 stops17h 49m

£468

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/1

08:30-07:10

2 stops17h 40m

London Heathrow

Tue 13/1

11:10-22:30

2 stops16h 20m

£471

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 6/1

13:45-20:35

2 stops49h 50m

London Heathrow

Thu 15/1

08:45-22:30

2 stops18h 45m

£472

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 13/1

13:45-10:25

2 stops15h 40m

London Heathrow

Tue 27/1

08:45-22:30

2 stops18h 45m

£474

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 15/1

14:05-07:55

1 stop12h 50m

London Heathrow

Thu 22/1

06:50-20:28

2 stops18h 38m

£478

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Wed 28/1

12:22-09:30

2 stops16h 08m

London City

Sun 1/2

13:45-17:01

2 stops32h 16m

£506

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Mon 13/4

08:58-06:45

2 stops16h 47m

London Gatwick

Mon 27/4

12:20-00:14

2 stops16h 54m

£572

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Fri 23/1

06:00-07:30

2 stops20h 30m

London Gatwick

Tue 27/1

11:20-22:12

2 stops39h 52m

£639

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?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Louisville is in October. Flight prices, which tend to average around £535, are often lower during this time because this is during the off-season. The month of August is another great option to travel to London, with average flight prices from Louisville averaging around £537.

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £523. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Louisville to London for around £856.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £571. Flights in the afternoon are often more expensive, with an average ticket price of £853.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £760 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Louisville for as low as £573 on momondo.

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

Direct flights	None

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

Search flight deals

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 16m.
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 many operators does momondo search for flights from Louisville Intl Airport to London?
There are 2 operators available for flights from Louisville Intl Airport to London as of November 2025.
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 Virgin Atlantic, making up 100% of the total bookings.

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
Virgin Atlantic	PriceFrom £552	Free Cancellation	Rating 7.5 674 reviews		Search Virgin Atlantic flights
American Airlines	PriceFrom £570	Free Cancellation	Rating 7.2 11,047 reviews		Search American Airlines flights

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Dover

Colchester

Chelmsford

Hayes

Worthing

Ramsgate

Dartford

Bedford

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.