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 41m.

What airlines fly to London?

British Airways, American Airlines 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 52% of people opting to fly with this airline when traveling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Flights via Atlanta (ATL) offer the lowest average round-trip price of $851.

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

Atlanta (ATL) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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

Chicago (ORD) has the shortest average layover time for this route: 1h 16m.

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

Iberia, Delta, and British Airways 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 refresh daily.

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

As of March 2026, there are 5 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.

$420 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 $958 to $756. The lowest price recently found on this route was $833.

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Find the cheapest flights from Louisville to London

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:00 pm - 6:50 pm

SDF

LHR

24h 50m

3 stops

6:40 am - 11:59 pm

LHR

SDF

22h 19m

2 stops

$833Scandinavian Airlines

Tue, Sep 1 - Thu, Sep 17

4:00 pm - 8:00 am

SDF

LHR

11h 00m

1 stop

6:15 am - 10:47 pm

LHR

SDF

21h 32m

2 stops

$844Multiple Airlines

Wed, Aug 26 - Wed, Sep 2

4:00 pm - 9:35 am

SDF

LHR

12h 35m

1 stop

5:10 pm - 9:01 am

LHR

SDF

44h 51m

2 stops

$868British Airways

Tue, Sep 8 - Tue, Sep 15

3:59 pm - 12:50 pm

SDF

LHR

15h 51m

1 stop

12:20 pm - 10:58 pm

LHR

SDF

39h 38m

2 stops

$878British Airways

Fri, Sep 11 - Sun, Sep 13

7:43 pm - 5:55 pm

SDF

LCY

17h 12m

2 stops

9:15 am - 7:19 pm

LCY

SDF

15h 04m

2 stops

$879Lufthansa

Mon, Aug 17 - Wed, Aug 19

5:35 am - 10:00 am

SDF

LHR

23h 25m

2 stops

7:25 am - 6:56 pm

LHR

SDF

16h 31m

2 stops

$880United Airlines

Mon, Aug 17 - Wed, Aug 19

9:00 am - 11:55 am

SDF

LHR

21h 55m

1 stop

8:40 am - 8:36 pm

LHR

SDF

16h 56m

2 stops

$881United Airlines

Mon, Aug 17 - Wed, Aug 19

7:43 pm - 5:55 pm

SDF

LCY

17h 12m

2 stops

9:15 am - 7:19 pm

LCY

SDF

15h 04m

2 stops

$951Lufthansa

Mon, Aug 17 - Tue, Aug 25

2:15 pm - 7:15 am

SDF

LCY

12h 00m

2 stops

1:45 pm - 11:59 pm

LCY

SDF

15h 14m

2 stops

$1,078Delta

Wed, Aug 26 - Sun, Sep 6

1:00 pm - 7:55 am

SDF

LCY

13h 55m

2 stops

1:45 pm - 12:25 am

LCY

SDF

15h 40m

2 stops

$1,112Delta

Tue, May 12 - Sun, May 17

Iberia flights from Louisville to London

Our best Iberia deals on Louisville to London flight tickets

Iberia

Apr 27

SDF11:16 amLouisville Intl

18h 34m

2 stops

LGW10:50 amLondon Gatwick

May 4

LGW8:40 pmLondon Gatwick

29h 50m

2 stops

SDF9:30 pmLouisville Intl

$919

Iberia

May 6

SDF12:11 pmLouisville Intl

17h 19m

1 stop

LHR10:30 amLondon Heathrow

May 13

LHR7:50 amLondon Heathrow

18h 40m

2 stops

SDF9:30 pmLouisville Intl

$925

Iberia

May 6

SDF12:11 pmLouisville Intl

14h 29m

1 stop

LHR7:40 amLondon Heathrow

May 13

LHR7:50 amLondon Heathrow

18h 40m

2 stops

SDF9:30 pmLouisville Intl

$926

Scandinavian Airlines flights from Louisville to London

Our best Scandinavian Airlines deals on Louisville to London flight tickets

Scandinavian Airlines

Sep 1

SDF1:00 pmLouisville Intl

24h 50m

3 stops

LHR6:50 pmLondon Heathrow

Sep 17

LHR6:40 amLondon Heathrow

22h 19m

2 stops

SDF11:59 pmLouisville Intl

$833

Scandinavian Airlines

Sep 1

SDF1:00 pmLouisville Intl

24h 30m

2 stops

LHR6:30 pmLondon Heathrow

Sep 17

LHR6:40 amLondon Heathrow

22h 19m

2 stops

SDF11:59 pmLouisville Intl

$859

Scandinavian Airlines

Sep 11

SDF12:53 pmLouisville Intl

22h 07m

2 stops

LHR4:00 pmLondon Heathrow

Sep 19

LHR6:40 amLondon Heathrow

22h 19m

2 stops

SDF11:59 pmLouisville Intl

$950

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/1

1:00 pm-6:50 pm

3 stops24h 50m

London Heathrow

Thu 9/17

6:40 am-11:59 pm

2 stops22h 19m

$833

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/26

4:00 pm-8:00 am

1 stop11h 00m

London Heathrow

Wed 9/2

6:15 am-10:47 pm

2 stops21h 32m

$844

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/8

4:00 pm-9:35 am

1 stop12h 35m

London Heathrow

Tue 9/15

5:10 pm-9:01 am

2 stops44h 51m

$868

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/11

3:59 pm-12:50 pm

1 stop15h 51m

London Heathrow

Sun 9/13

12:20 pm-10:58 pm

2 stops39h 38m

$878

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 8/17

7:43 pm-5:55 pm

2 stops17h 12m

London City

Wed 8/19

9:15 am-7:19 pm

2 stops15h 04m

$879

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

5:35 am-10:00 am

2 stops23h 25m

London Heathrow

Wed 8/19

7:25 am-6:56 pm

2 stops16h 31m

$880

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

9:00 am-11:55 am

1 stop21h 55m

London Heathrow

Wed 8/19

8:40 am-8:36 pm

2 stops16h 56m

$881

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 8/17

7:43 pm-5:55 pm

2 stops17h 12m

London City

Tue 8/25

9:15 am-7:19 pm

2 stops15h 04m

$951

Quickest round-trip

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Wed 8/26

2:15 pm-7:15 am

2 stops12h 00m

London City

Sun 9/6

1:45 pm-11:59 pm

2 stops15h 14m

$1,078

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Tue 5/12

1:00 pm-7:55 am

2 stops13h 55m

London City

Sun 5/17

1:45 pm-12:25 am

2 stops15h 40m

$1,112

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 October. Flight prices, which tend to average around $696, 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 $707.

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 $879 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Louisville for as low as $688 on momondo.

Can stopping save me money on Louisville to London flights?

You could potentially save up to 11% 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	10h 25m
Direct flights	None

The fastest flight from Louisville to London takes 10h 25m

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?
The straight-line distance from Louisville Intl to London is 4042.6 mi. In terms of flight time, this usually takes a little over 10h 25m.
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 March 2026, there are 5 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 American Airlines (37% of total bookings). The next most popular airlines are British Airways (21%), Delta (21%), and United Airlines (15%).

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 $577	Free Cancellation	Rating 7.5 685 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $588	Free Cancellation	Rating 7.9 8,360 reviews	Search Delta flights
British Airways	PriceFrom $589	Free Cancellation	Rating 6.7 7,834 reviews	Search British Airways flights
United Airlines	PriceFrom $678	Free Cancellation	Rating 7.4 9,519 reviews	Search United Airlines flights
American Airlines	PriceFrom $692	Free Cancellation	Rating 7.1 11,533 reviews	Search American Airlines flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Crawley

Hayes

Wembley

Stansted

Croydon

Dartford

Brentwood

Guildford

Cobham

Folkestone

Romford

Harrow

Watford

Richmond

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.

Start using Trips

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Nearby airports

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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 $420

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 5/23. 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

Scandinavian Airlines flights from Louisville to London

Our best Scandinavian Airlines deals on Louisville to London flight tickets

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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 far in advance should I book a flight 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

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

Fly to other destinations from Louisville

According to popular flight searches on momondo this year

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