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

Aer Lingus and United Airlines are the most popular carriers operating from Louisville Intl to London Heathrow

What airlines fly to London Heathrow Airport?

British Airways, American Airlines and Delta are the top three most popular airlines that fly to London Heathrow Airport from Louisville according to our data. British Airways is the first choice among our users, with 57% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 9 different airlines that fly to London Heathrow Airport 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 Heathrow Airport?

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

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

As of September 2026, there are 5 operators available to choose from for flights from Louisville Intl Airport to London Heathrow Airport.

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

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 Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents you'll need for your trip to London Heathrow Airport 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 Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$331 Cheap Flights from Louisville to London Heathrow Airport in 2026

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.

2:20 pm - 7:45 amSDF Louisville Intl-LHR London Heathrow

12h 25m1 stop Detroit Metropolitan Wayne County

8:55 am - 4:54 pmLHR London Heathrow-SDF Louisville Intl

12h 59m1 stop Atlanta Hartsfield-Jackson

$738Virgin Atlantic

Tue, Nov 3 - Tue, Nov 24

1:59 pm - 7:15 amSDF Louisville Intl-LHR London Heathrow

12h 16m1 stop Atlanta Hartsfield-Jackson

11:20 am - 9:13 pmLHR London Heathrow-SDF Louisville Intl

13h 53m1 stop Detroit Metropolitan Wayne County

$753Virgin Atlantic

Tue, Oct 13 - Wed, Oct 28

5:55 pm - 1:15 pmSDF Louisville Intl-LHR London Heathrow

14h 20m1 stop Atlanta Hartsfield-Jackson

6:30 am - 5:19 pmLHR London Heathrow-SDF Louisville Intl

15h 49m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$758Delta

Wed, Sep 23 - Wed, Sep 30

6:00 am - 6:25 amSDF Louisville Intl-LHR London Heathrow

19h 25m1 stop Atlanta Hartsfield-Jackson

8:40 am - 9:13 pmLHR London Heathrow-SDF Louisville Intl

17h 33m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$758Delta

Tue, Nov 3 - Tue, Nov 24

5:55 pm - 1:15 pmSDF Louisville Intl-LHR London Heathrow

14h 20m1 stop Atlanta Hartsfield-Jackson

1:25 pm - 11:59 pmLHR London Heathrow-SDF Louisville Intl

15h 34m1 stop Atlanta Hartsfield-Jackson

$765Air France

Wed, Sep 23 - Tue, Sep 29

2:47 pm - 7:10 amSDF Louisville Intl-LHR London Heathrow

11h 23m1 stop Detroit Metropolitan Wayne County

1:25 pm - 11:59 pmLHR London Heathrow-SDF Louisville Intl

15h 34m1 stop Atlanta Hartsfield-Jackson

$765KLM

Wed, Sep 23 - Wed, Sep 30

1:00 pm - 7:10 amSDF Louisville Intl-LHR London Heathrow

37h 10m2 stops Newark Montreal Pierre Elliott Trudeau Intl

6:50 am - 5:30 pmLHR London Heathrow-SDF Louisville Intl

15h 40m2 stops Brussels Bruxelles-National Newark

$793United Airlines

Tue, Mar 2 - Fri, Mar 5

3:50 pm - 7:40 amSDF Louisville Intl-LHR London Heathrow

34h 50m1 stop Houston George Bush Intcntl

6:50 am - 7:34 pmLHR London Heathrow-SDF Louisville Intl

17h 44m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

$795United Airlines

Tue, Mar 2 - Fri, Mar 5

5:46 pm - 11:40 amSDF Louisville Intl-LHR London Heathrow

12h 54m1 stop Charlotte Douglas

7:35 am - 9:35 pmLHR London Heathrow-SDF Louisville Intl

18h 00m2 stops Madrid Barajas Chicago O'Hare Intl

$883British Airways

Mon, Jan 11 - Wed, Mar 17

10:46 am - 6:50 amSDF Louisville Intl-LHR London Heathrow

15h 04m1 stop Dallas/Fort Worth

7:30 am - 9:35 pmLHR London Heathrow-SDF Louisville Intl

18h 05m2 stops Madrid Barajas Chicago O'Hare Intl

$883British Airways

Mon, Jan 11 - Tue, Mar 16

Cheap last minute flights

Enter your travel dates to find the best prices.

12:39 pm - 6:45 amSDF Louisville Intl-LHR London Heathrow

13h 06m1 stop Boston Logan Intl

8:40 am - 9:30 pmLHR London Heathrow-SDF Louisville Intl

17h 50m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$796Delta

Tue, Sep 15 - Tue, Sep 22

2:47 pm - 10:20 amSDF Louisville Intl-LHR London Heathrow

14h 33m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

11:30 am - 11:59 pmLHR London Heathrow-SDF Louisville Intl

17h 29m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$800Delta

Tue, Sep 15 - Tue, Sep 22

12:39 pm - 6:45 amSDF Louisville Intl-LHR London Heathrow

13h 06m1 stop Boston Logan Intl

11:15 am - 7:10 pmLHR London Heathrow-SDF Louisville Intl

12h 55m1 stop Atlanta Hartsfield-Jackson

$803Delta

Tue, Sep 15 - Tue, Sep 22

6:15 am - 9:25 pmSDF Louisville Intl-LHR London Heathrow

10h 10m1 stop Newark

8:30 am - 7:11 pmLHR London Heathrow-SDF Louisville Intl

15h 41m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,085United Airlines

Tue, Sep 15 - Wed, Oct 7

9:00 am - 6:30 amSDF Louisville Intl-LHR London Heathrow

16h 30m3 stops Chicago O'Hare Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

2:05 pm - 11:56 pmLHR London Heathrow-SDF Louisville Intl

14h 51m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,102Multiple Airlines

Tue, Sep 15 - Tue, Sep 22

9:00 am - 6:30 amSDF Louisville Intl-LHR London Heathrow

16h 30m3 stops Chicago O'Hare Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

2:10 pm - 9:54 amLHR London Heathrow-SDF Louisville Intl

24h 44m3 stops Toronto Pearson Intl Newark Chicago O'Hare Intl

$1,111Air Canada

Tue, Sep 15 - Tue, Sep 22

6:15 am - 9:25 pmSDF Louisville Intl-LHR London Heathrow

10h 10m1 stop Newark

5:40 pm - 2:39 pmLHR London Heathrow-SDF Louisville Intl

25h 59m2 stops Toronto Pearson Intl Washington, D.C. Dulles Intl

$1,122United Airlines

Tue, Sep 15 - Mon, Oct 5

5:59 pm - 11:15 amSDF Louisville Intl-LHR London Heathrow

12h 16m1 stop Chicago O'Hare Intl

12:30 pm - 7:10 pmLHR London Heathrow-SDF Louisville Intl

11h 40m1 stop Charlotte Douglas

$1,335British Airways

Mon, Sep 14 - Wed, Sep 16

5:36 pm - 9:35 amSDF Louisville Intl-LHR London Heathrow

10h 59m1 stop Boston Logan Intl

2:25 pm - 10:33 pmLHR London Heathrow-SDF Louisville Intl

13h 08m1 stop Chicago O'Hare Intl

$1,355American Airlines

Tue, Sep 15 - Thu, Sep 17

2:53 pm - 6:55 amSDF Louisville Intl-LHR London Heathrow

11h 02m1 stop Charlotte Douglas

9:15 am - 5:14 pmLHR London Heathrow-SDF Louisville Intl

12h 59m1 stop Charlotte Douglas

$1,455American Airlines

Thu, Sep 17 - Sat, Sep 19

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Virgin Atlantic flights from Louisville to London Heathrow Airport

Our best Virgin Atlantic deals on Louisville to London Heathrow Airport flight tickets

Virgin Atlantic

Nov 3

SDF2:20 pmLouisville Intl

12h 25m

1 stop

LHR7:45 amLondon Heathrow

Nov 24

LHR8:55 amLondon Heathrow

12h 59m

1 stop

SDF4:54 pmLouisville Intl

$738

Virgin Atlantic

Oct 13

SDF1:59 pmLouisville Intl

12h 16m

1 stop

LHR7:15 amLondon Heathrow

Oct 28

LHR11:20 amLondon Heathrow

13h 53m

1 stop

SDF9:13 pmLouisville Intl

$753

Virgin Atlantic

Jan 12

SDF3:24 pmLouisville Intl

14h 16m

2 stops

LHR10:40 amLondon Heathrow

Mar 16

LHR11:45 amLondon Heathrow

13h 56m

2 stops

SDF9:41 pmLouisville Intl

$771

American Airlines flights from Louisville to London Heathrow Airport

Our best American Airlines deals on Louisville to London Heathrow Airport flight tickets

American Airlines

Sep 15

SDF5:36 pmLouisville Intl

10h 59m

1 stop

LHR9:35 amLondon Heathrow

Sep 17

LHR2:25 pmLondon Heathrow

13h 08m

1 stop

SDF10:33 pmLouisville Intl

$1,355

American Airlines

Sep 17

SDF2:53 pmLouisville Intl

11h 02m

1 stop

LHR6:55 amLondon Heathrow

Sep 19

LHR9:15 amLondon Heathrow

12h 59m

1 stop

SDF5:14 pmLouisville Intl

$1,455

momondo Fare Finder

Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 11/3

2:20 pm-7:45 am

1 stop12h 25m

London Heathrow

Tue 11/24

8:55 am-4:54 pm

1 stop12h 59m

$738

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 10/13

1:59 pm-7:15 am

1 stop12h 16m

London Heathrow

Wed 10/28

11:20 am-9:13 pm

1 stop13h 53m

$753

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 9/23

5:55 pm-1:15 pm

1 stop14h 20m

London Heathrow

Wed 9/30

6:30 am-5:19 pm

2 stops15h 49m

$758

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 11/3

6:00 am-6:25 am

1 stop19h 25m

London Heathrow

Tue 11/24

8:40 am-9:13 pm

2 stops17h 33m

$758

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 9/23

5:55 pm-1:15 pm

1 stop14h 20m

London Heathrow

Tue 9/29

1:25 pm-11:59 pm

1 stop15h 34m

$765

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 9/23

2:47 pm-7:10 am

1 stop11h 23m

London Heathrow

Wed 9/30

1:25 pm-11:59 pm

1 stop15h 34m

$765

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 3/2

1:00 pm-7:10 am

2 stops37h 10m

London Heathrow

Fri 3/5

6:50 am-5:30 pm

2 stops15h 40m

$793

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 3/2

3:50 pm-7:40 am

1 stop34h 50m

London Heathrow

Fri 3/5

6:50 am-7:34 pm

2 stops17h 44m

$795

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 1/11

5:46 pm-11:40 am

1 stop12h 54m

London Heathrow

Wed 3/17

7:35 am-9:35 pm

2 stops18h 00m

$883

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 1/11

10:46 am-6:50 am

1 stop15h 04m

London Heathrow

Tue 3/16

7:30 am-9:35 pm

2 stops18h 05m

$883

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 Heathrow Airport

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 Heathrow Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $929 to $1,211.
The lowest price recently found on this route was $738.

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Louisville, with most prices found around $630. If you’re not able to fly to London Heathrow Airport in February, then November is your next best option. Flight prices from Louisville to London Heathrow Airport during November average around $798.

Can stopping save me money on Louisville to London Heathrow Airport flights?

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

When to book flights from Louisville to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to London Heathrow Airport (SDF to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to London Heathrow Airport

Best Price Found	$331
Fastest flight time	12h 26m
Direct flights	None

The best one-way flight to London Heathrow Airport from Louisville in the past 72 hours is $331. The best round-trip flight deal from Louisville to London Heathrow Airport found on momondo in the last 72 hours is $738.

The fastest flight from Louisville to London Heathrow Airport takes 12h 26m

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

Search flight deals

Frequently asked questions about flying from Louisville to London Heathrow Airport

How far is Louisville Intl to London Heathrow by plane?
A flight from Louisville Intl to London Heathrow will travel around 4030.3 mi. By plane, this route typically takes 12h 26m.
When did momondo last update prices for flights from Louisville Intl Airport to London Heathrow Airport?
Prices for flights from Louisville Intl Airport to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from Louisville Intl Airport to London Heathrow Airport?
As of September 2026, there are 5 operators available to choose from for flights from Louisville Intl Airport to London Heathrow Airport.
How old do you have to be to fly from Louisville Intl Airport to London Heathrow Airport?
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 Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport 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 Heathrow Airport. 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 Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Louisville to London Heathrow Airport is British Airways, representing 39% of all bookings. The subsequent popular airlines are American Airlines at 23%, United Airlines at 17%, and Delta at 13%.

Best airlines flying from Louisville to London Heathrow Airport

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $450	Free Cancellation	Rating 7.8 8,568 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $598	Free Cancellation	Rating 7.4 694 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $606	Free Cancellation	Rating 6.7 8,214 reviews	Search British Airways flights
American Airlines	PriceFrom $676	Free Cancellation	Rating 7.1 12,049 reviews	Search American Airlines flights
United Airlines	PriceFrom $705	Free Cancellation	Rating 7.4 10,211 reviews	Search United Airlines flights

Hounslow

Gatwick

Milton Keynes

Luton

Stratford-upon-Avon

Hayes

Wembley

Dover

Croydon

Richmond

Stansted

Kingston upon Thames

Harrow

Cobham

Watford

Slough

Eastbourne

Worthing

Hook

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. momondo allows you to filter the results for Louisville to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to London?

Once you have performed a search for Louisville to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Louisville to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Louisville to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London Heathrow Airport trip

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Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $380

Flights to London Stansted Airportfrom $444

Flights to London City Airportfrom $580

Flights to London Luton Airportfrom $413

Flights to Glasgow Intl Airportfrom $483

Flights to Belfast Intl Airportfrom $669

Flights to London Southend Airportfrom $566

Flights to Belfast City Airportfrom $669

Cheap flights from Louisville to London from $331

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 3/1. 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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Virgin Atlantic flights from Louisville to London Heathrow Airport

Our best Virgin Atlantic deals on Louisville to London Heathrow Airport flight tickets

American Airlines flights from Louisville to London Heathrow Airport

Our best American Airlines deals on Louisville to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Louisville to London Heathrow Airport

What is the typical price of a round-trip flight between Louisville and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

Can stopping save me money on Louisville to London Heathrow Airport flights?

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

What airlines fly to London Heathrow Airport?

When to book flights from Louisville to London Heathrow Airport

Cheap Louisville to London Heathrow Airport (SDF to LHR) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Louisville to London Heathrow Airport

Best airlines flying from Louisville to London Heathrow Airport

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

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport 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 London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Louisville flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

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.

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