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

British Airways, Air Canada, and United Airlines are the most popular carriers operating from Louisville Intl to London

Which layover airport offers the lowest fares from Louisville to London?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $771.

Which layover airport has the shortest travel time from Louisville to London?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 10h 30m.

What airlines fly to London?

British Airways, American Airlines and Delta 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 55% of people opting to fly with this airline when traveling to London. Keep in mind that there are 10 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Louisville and London?

Washington, D.C. (IAD) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Louisville to London?

Washington, D.C. (IAD) has the shortest average layover time for this route: 2h 27m.

When did momondo last update prices for flights from Louisville Intl Airport to London?

Prices for flights from Louisville Intl Airport to London refresh daily.

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

As of July 2026, there are 6 operators available to choose from for flights from Louisville Intl Airport to London.

How old do you have to be to fly from Louisville Intl Airport to London?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$209 Cheap Flights from Louisville to London in 2026

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 $1,111 to $1,329. The lowest price recently found on this route was $858.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:26 am - 8:35 am

SDF

LHR

17h 09m

1 stop

6:15 am - 9:35 pm

LHR

SDF

20h 20m

2 stops

$858Iberia

Sun, Nov 8 - Wed, Nov 18

2:47 pm - 6:50 am

SDF

LHR

11h 03m

1 stop

7:50 am - 11:22 pm

LHR

SDF

20h 32m

2 stops

$878British Airways

Tue, Sep 22 - Wed, Sep 30

3:35 pm - 11:35 am

SDF

LHR

15h 00m

1 stop

6:50 am - 5:40 pm

LHR

SDF

15h 50m

2 stops

$882United Airlines

Tue, Sep 22 - Thu, Oct 1

10:45 am - 6:30 am

SDF

LHR

14h 45m

2 stops

6:50 am - 5:40 pm

LHR

SDF

15h 50m

2 stops

$885United Airlines

Tue, Sep 22 - Thu, Oct 1

10:29 am - 7:40 am

SDF

LHR

16h 11m

1 stop

4:25 pm - 10:46 am

LHR

SDF

23h 21m

1 stop

$887British Airways

Mon, Sep 21 - Fri, Oct 2

10:23 am - 6:30 am

SDF

LHR

15h 07m

2 stops

12:40 pm - 11:49 pm

LHR

SDF

40h 09m

2 stops

$891Air Canada

Tue, Sep 22 - Wed, Sep 30

12:00 pm - 10:40 am

SDF

LGW

17h 40m

2 stops

2:30 pm - 2:04 pm

LGW

SDF

28h 34m

2 stops

$923American Airlines

Sun, Aug 2 - Fri, Aug 28

8:30 am - 8:40 am

SDF

LGW

19h 10m

2 stops

2:30 pm - 11:10 am

LGW

SDF

25h 40m

2 stops

$1,023American Airlines

Sat, Sep 5 - Sat, Sep 19

12:39 pm - 7:55 am

SDF

LCY

14h 16m

2 stops

9:20 am - 9:30 pm

LCY

SDF

17h 10m

2 stops

$1,024Delta

Mon, Sep 14 - Wed, Sep 23

12:39 pm - 7:55 am

SDF

LCY

14h 16m

2 stops

9:20 am - 9:30 pm

LCY

SDF

17h 10m

2 stops

$1,025Delta

Mon, Sep 14 - Wed, Sep 23

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Scandinavian Airlines flights from Louisville to London

Our best Scandinavian Airlines deals on Louisville to London flight tickets

Scandinavian Airlines

Sep 4

SDF1:21 pmLouisville Intl

38h 59m

2 stops

LHR9:20 amLondon Heathrow

Sep 12

LHR5:00 pmLondon Heathrow

33h 59m

2 stops

SDF9:59 pmLouisville Intl

$957

Scandinavian Airlines

Sep 15

SDF12:39 pmLouisville Intl

28h 01m

2 stops

LHR9:40 pmLondon Heathrow

Sep 20

LHR6:40 amLondon Heathrow

20h 19m

3 stops

SDF9:59 pmLouisville Intl

$983

Scandinavian Airlines

Sep 5

SDF3:25 pmLouisville Intl

21h 15m

2 stops

LHR5:40 pmLondon Heathrow

Sep 19

LHR6:40 amLondon Heathrow

22h 19m

2 stops

SDF11:59 pmLouisville Intl

$986

British Airways flights from Louisville to London

Our best British Airways deals on Louisville to London flight tickets

British Airways

Sep 22

SDF2:47 pmLouisville Intl

11h 03m

1 stop

LHR6:50 amLondon Heathrow

Sep 30

LHR7:50 amLondon Heathrow

20h 32m

2 stops

SDF11:22 pmLouisville Intl

$878

British Airways

Sep 21

SDF10:29 amLouisville Intl

16h 11m

1 stop

LHR7:40 amLondon Heathrow

Oct 2

LHR4:25 pmLondon Heathrow

23h 21m

1 stop

SDF10:46 amLouisville Intl

$887

British Airways

Oct 4

SDF5:59 pmLouisville Intl

13h 16m

1 stop

LHR12:15 pmLondon Heathrow

Oct 11

LHR9:45 amLondon Heathrow

12h 30m

1 stop

SDF5:15 pmLouisville Intl

$937

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 11/8

10:26 am-8:35 am

1 stop17h 09m

London Heathrow

Wed 11/18

6:15 am-9:35 pm

2 stops20h 20m

$858

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/22

2:47 pm-6:50 am

1 stop11h 03m

London Heathrow

Wed 9/30

7:50 am-11:22 pm

2 stops20h 32m

$878

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/22

3:35 pm-11:35 am

1 stop15h 00m

London Heathrow

Thu 10/1

6:50 am-5:40 pm

2 stops15h 50m

$882

Quickest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/22

10:45 am-6:30 am

2 stops14h 45m

London Heathrow

Thu 10/1

6:50 am-5:40 pm

2 stops15h 50m

$885

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/21

10:29 am-7:40 am

1 stop16h 11m

London Heathrow

Fri 10/2

4:25 pm-10:46 am

1 stop23h 21m

$887

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/22

10:23 am-6:30 am

2 stops15h 07m

London Heathrow

Wed 9/30

12:40 pm-11:49 pm

2 stops40h 09m

$891

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Sun 8/2

12:00 pm-10:40 am

2 stops17h 40m

London Gatwick

Fri 8/28

2:30 pm-2:04 pm

2 stops28h 34m

$923

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Sat 9/5

8:30 am-8:40 am

2 stops19h 10m

London Gatwick

Sat 9/19

2:30 pm-11:10 am

2 stops25h 40m

$1,023

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 9/14

12:39 pm-7:55 am

2 stops14h 16m

London City

Wed 9/23

9:20 am-9:30 pm

2 stops17h 10m

$1,024

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 9/14

12:39 pm-7:55 am

2 stops14h 16m

London City

Wed 9/23

9:20 am-9:30 pm

2 stops17h 10m

$1,025

Flights are sorted by cheapest round-trip 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

Layovers

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 April. Flight prices, which tend to average around $451, 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 $535.

Can stopping save me money on Louisville to London flights?

You could potentially save up to 25% on your flight if you consider stops on a Louisville to London flight.

How have Louisville to London flight prices changed over time?

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 round-trip 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

Fastest flight time	9h 55m
Direct flights	None

The fastest flight from Louisville to London takes 9h 55m

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

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Frequently asked questions about flying from Louisville to London

How far is Louisville Intl to London by plane?
The straight-line distance from Louisville Intl to London is 4042.6 mi. In terms of flight time, this usually takes a little over 9h 55m.
When did momondo last update prices for flights from Louisville Intl Airport to London?
Prices for flights from Louisville Intl Airport to London refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to London?
As of July 2026, there are 6 operators available to choose from for flights from Louisville Intl Airport to London.
How old do you have to be to fly from Louisville Intl Airport to London?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to London is British Airways (31% of total bookings). The next most popular airlines are American Airlines (24%), Delta (22%), and United Airlines (22%).

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
KLM	PriceFrom $574	Free Cancellation	Rating 7.8 1,532 reviews	Search KLM flights
Virgin Atlantic	PriceFrom $577	Free Cancellation	Rating 7.5 689 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $588	Free Cancellation	Rating 7.8 8,452 reviews	Search Delta flights
British Airways	PriceFrom $589	Free Cancellation	Rating 6.7 8,087 reviews	Search British Airways flights
American Airlines	PriceFrom $676	Free Cancellation	Rating 7.1 11,771 reviews	Search American Airlines flights
United Airlines	PriceFrom $678	Free Cancellation	Rating 7.4 9,925 reviews	Search United Airlines flights

Hounslow

Gatwick

Milton Keynes

Luton

Hayes

Dover

Crawley

Croydon

Wembley

Stansted

Harrow

Slough

Watford

Ilford

Cobham

Brentwood

Folkestone

Guildford

Romford

Uxbridge

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to London for you.

Can I find flights from Louisville to London with flexible booking policies on momondo?

Yes. All flights to London from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Louisville and alert you when they change.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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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 $209

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 7/26. 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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Scandinavian Airlines flights from Louisville to London

Our best Scandinavian Airlines 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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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?

Can stopping save me money on Louisville to London flights?

How have Louisville to London flight prices changed over time?

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

What airlines fly to London?

Which airport is the most popular layover for flights between Louisville and London?

Which layover airport offers the lowest fares from Louisville to London?

Which layover airport has the shortest travel time from Louisville to London?

Which layover airport has the shortest connection time from Louisville to London?

When to book flights from Louisville to London

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Louisville to London

Best airlines flying from Louisville to London

Compare and see reviews for airlines that fly from Louisville to London with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organize 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 favorite 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

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