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

British Airways, United Airlines, and Air Canada 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 38% 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 September 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.

£210 Cheap Flights from Louisville to London in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

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

Find the cheapest flights from Louisville to London

Round-trip

One-way

Last minute

Cheap return flights

06:00 - 10:00SDF-LGW

23h 00m1 stop

14:00 - 23:45LGW-SDF

14h 45m1 stop

£403Multiple Airlines

Find Deal

Mon, 1 Dec - Fri, 5 Dec

12:54 - 06:45SDF-LHR

12h 51m1 stop

11:30 - 00:01LHR-SDF

17h 31m2 stops

£416Delta

Find Deal

Mon, 13 Oct - Wed, 22 Oct

19:33 - 13:30SDF-LHR

12h 57m1 stop

13:05 - 21:48LHR-SDF

13h 43m1 stop

£417Air France

Find Deal

Sun, 28 Sep - Tue, 14 Oct

19:33 - 13:30SDF-LHR

12h 57m1 stop

08:40 - 21:15LHR-SDF

17h 35m2 stops

£418Delta

Find Deal

Sun, 28 Sep - Tue, 14 Oct

20:15 - 13:30SDF-LHR

12h 15m1 stop

11:45 - 21:15LHR-SDF

14h 30m1 stop

£422KLM

Find Deal

Mon, 13 Oct - Wed, 22 Oct

15:11 - 06:45SDF-LHR

10h 34m1 stop

11:45 - 21:15LHR-SDF

14h 30m1 stop

£423KLM

Find Deal

Mon, 13 Oct - Wed, 22 Oct

15:09 - 18:30SDF-LHR

22h 21m2 stops

06:40 - 00:05LHR-SDF

22h 25m2 stops

£443Scandinavian Airlines

Find Deal

Mon, 1 Dec - Fri, 5 Dec

15:09 - 18:30SDF-LHR

22h 21m2 stops

06:40 - 21:30LHR-SDF

19h 50m2 stops

£443Scandinavian Airlines

Find Deal

Mon, 1 Dec - Sat, 6 Dec

17:53 - 11:10SDF-LHR

12h 17m1 stop

11:45 - 21:15LHR-SDF

14h 30m1 stop

£459Virgin Atlantic

Find Deal

Thu, 2 Oct - Fri, 10 Oct

12:57 - 08:45SDF-LHR

14h 48m2 stops

10:45 - 18:53LHR-SDF

13h 08m1 stop

£462Virgin Atlantic

Find Deal

Wed, 10 Dec - Sun, 14 Dec

Delta flights from Louisville to London

Our best Delta deals on Louisville to London flight tickets

Delta

13 Oct

SDF12:54Louisville Intl

12h 51m

1 stop

LHR06:45London Heathrow

22 Oct

LHR11:30London Heathrow

17h 31m

2 stops

SDF00:01Louisville Intl

£416

Find similar

Delta

28 Sept

SDF19:33Louisville Intl

12h 57m

1 stop

LHR13:30London Heathrow

14 Oct

LHR08:40London Heathrow

17h 35m

2 stops

SDF21:15Louisville Intl

£418

Find similar

Delta

8 Oct

SDF14:33Louisville Intl

13h 42m

2 stops

LHR09:15London Heathrow

29 Oct

LHR08:55London Heathrow

19h 06m

2 stops

SDF00:01Louisville Intl

£420

Find similar

KLM flights from Louisville to London

Our best KLM deals on Louisville to London flight tickets

KLM

13 Oct

SDF20:15Louisville Intl

12h 15m

1 stop

LHR13:30London Heathrow

22 Oct

LHR11:45London Heathrow

14h 30m

1 stop

SDF21:15Louisville Intl

£422

Find similar

KLM

13 Oct

SDF15:11Louisville Intl

10h 34m

1 stop

LHR06:45London Heathrow

22 Oct

LHR11:45London Heathrow

14h 30m

1 stop

SDF21:15Louisville Intl

£423

Find similar

KLM

4 Feb

SDF17:45Louisville Intl

12h 55m

1 stop

LHR11:40London Heathrow

13 Feb

LHR15:50London Heathrow

13h 06m

1 stop

SDF23:56Louisville Intl

£428

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Mon 1/12

06:00-10:00

1 stop23h 00m

London Gatwick

Fri 5/12

14:00-23:45

1 stop14h 45m

£403

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 13/10

12:54-06:45

1 stop12h 51m

London Heathrow

Wed 22/10

11:30-00:01

2 stops17h 31m

£416

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 28/9

19:33-13:30

1 stop12h 57m

London Heathrow

Tue 14/10

13:05-21:48

1 stop13h 43m

£417

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 28/9

19:33-13:30

1 stop12h 57m

London Heathrow

Tue 14/10

08:40-21:15

2 stops17h 35m

£418

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 13/10

20:15-13:30

1 stop12h 15m

London Heathrow

Wed 22/10

11:45-21:15

1 stop14h 30m

£422

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 13/10

15:11-06:45

1 stop10h 34m

London Heathrow

Wed 22/10

11:45-21:15

1 stop14h 30m

£423

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

15:09-18:30

2 stops22h 21m

London Heathrow

Fri 5/12

06:40-00:05

2 stops22h 25m

£443

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

15:09-18:30

2 stops22h 21m

London Heathrow

Sat 6/12

06:40-21:30

2 stops19h 50m

£443

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 2/10

17:53-11:10

1 stop12h 17m

London Heathrow

Fri 10/10

11:45-21:15

1 stop14h 30m

£459

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 10/12

12:57-08:45

2 stops14h 48m

London Heathrow

Sun 14/12

10:45-18:53

1 stop13h 08m

£462

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 cheapest month to fly to London?

The cheapest month to fly to London from Louisville is in August. Flight prices, which tend to average around £514, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from Louisville averaging around £529.

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 £501. 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 £820.

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 £547. Flights in the afternoon are often more expensive, with an average ticket price of £817.

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 £714 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 £610 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 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 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 September 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 £529	Free Cancellation	Rating 7.4 664 reviews		Search Virgin Atlantic flights
American Airlines	PriceFrom £546	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

Eastbourne

Luton

Milton Keynes

Maidstone

Gatwick

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Colchester

Worthing

Chelmsford

Dover

Hayes

Dartford

Winchester

Hounslow

Stansted

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.