What airlines fly to London Heathrow Airport?

British Airways, American Airlines and Iberia 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 41% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 10 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

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

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 November 2025, there are 6 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.

$221 Cheap Flights from Louisville to London Heathrow Airport in 2025/26

Q: 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 $894 to $1,420. The lowest price recently found on this route was $559.

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2:05 pm - 7:55 amSDF-LHR

12h 50m1 stop

11:10 am - 10:30 pmLHR-SDF

16h 20m2 stops

$559Lufthansa

Find Deal

Mon, Jan 12 - Mon, Jan 19

2:10 pm - 6:40 amSDF-LHR

11h 30m1 stop

1:35 pm - 10:30 pmLHR-SDF

13h 55m1 stop

$601Lufthansa

Find Deal

Mon, Jan 12 - Mon, Jan 19

11:10 am - 7:10 amSDF-LHR

15h 00m2 stops

7:40 am - 7:43 pmLHR-SDF

17h 03m2 stops

$615Multiple Airlines

Find Deal

Mon, Jan 12 - Mon, Jan 19

1:50 pm - 6:20 amSDF-LHR

11h 30m1 stop

8:30 am - 7:43 pmLHR-SDF

16h 13m2 stops

$620Lufthansa

Find Deal

Fri, Jan 9 - Tue, Jan 13

1:50 pm - 6:20 amSDF-LHR

11h 30m1 stop

11:10 am - 10:30 pmLHR-SDF

16h 20m2 stops

$624Lufthansa

Find Deal

Wed, Feb 4 - Sun, Feb 8

6:12 pm - 11:15 amSDF-LHR

12h 03m1 stop

7:40 am - 10:30 pmLHR-SDF

19h 50m2 stops

$625Lufthansa

Find Deal

Wed, Feb 4 - Sun, Feb 8

2:05 pm - 10:50 amSDF-LHR

15h 45m2 stops

11:10 am - 10:30 pmLHR-SDF

16h 20m2 stops

$629United Airlines

Find Deal

Wed, Jan 7 - Wed, Jan 14

2:10 pm - 6:40 amSDF-LHR

11h 30m1 stop

3:10 pm - 11:23 pmLHR-SDF

13h 13m1 stop

$637Lufthansa

Find Deal

Fri, Jan 9 - Tue, Jan 13

2:05 pm - 5:55 amSDF-LHR

10h 50m1 stop

6:30 pm - 5:19 pmLHR-SDF

27h 49m2 stops

$638Lufthansa

Find Deal

Sat, Feb 14 - Fri, Feb 20

9:30 am - 7:10 amSDF-LHR

16h 40m2 stops

6:30 pm - 5:19 pmLHR-SDF

27h 49m2 stops

$644Multiple Airlines

Find Deal

Sat, Feb 14 - Fri, Feb 20

Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets

Delta

Jan 5

SDF3:00 pmLouisville Intl

11h 50m

1 stop

LHR7:50 amLondon Heathrow

Jan 12

LHR10:45 amLondon Heathrow

15h 11m

1 stop

SDF8:56 pmLouisville Intl

$727

Find similar

Delta

Jan 5

SDF3:00 pmLouisville Intl

11h 50m

1 stop

LHR7:50 amLondon Heathrow

Jan 12

LHR11:05 amLondon Heathrow

15h 10m

2 stops

SDF9:15 pmLouisville Intl

$732

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Air Canada flights from Louisville to London Heathrow Airport

Our best Air Canada deals on Louisville to London Heathrow Airport flight tickets

Air Canada

Feb 4

SDF9:50 amLouisville Intl

15h 40m

2 stops

LHR6:30 amLondon Heathrow

Feb 8

LHR11:10 amLondon Heathrow

17h 13m

2 stops

SDF11:23 pmLouisville Intl

$666

Find similar

Air Canada

Jan 5

SDF2:00 pmLouisville Intl

16h 20m

2 stops

LHR11:20 amLondon Heathrow

Jan 12

LHR1:25 pmLondon Heathrow

35h 06m

2 stops

SDF7:31 pmLouisville Intl

$811

Find similar

Air Canada

May 6

SDF11:00 amLouisville Intl

14h 35m

2 stops

LHR6:35 amLondon Heathrow

Jun 1

LHR12:40 pmLondon Heathrow

38h 50m

2 stops

SDF10:30 pmLouisville Intl

$844

Find similar

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

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

2:05 pm-7:55 am

1 stop12h 50m

London Heathrow

Mon 1/19

11:10 am-10:30 pm

2 stops16h 20m

$559

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

2:10 pm-6:40 am

1 stop11h 30m

London Heathrow

Mon 1/19

1:35 pm-10:30 pm

1 stop13h 55m

$601

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

11:10 am-7:10 am

2 stops15h 00m

London Heathrow

Mon 1/19

7:40 am-7:43 pm

2 stops17h 03m

$615

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 1/9

1:50 pm-6:20 am

1 stop11h 30m

London Heathrow

Tue 1/13

8:30 am-7:43 pm

2 stops16h 13m

$620

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/4

1:50 pm-6:20 am

1 stop11h 30m

London Heathrow

Sun 2/8

11:10 am-10:30 pm

2 stops16h 20m

$624

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/4

6:12 pm-11:15 am

1 stop12h 03m

London Heathrow

Sun 2/8

7:40 am-10:30 pm

2 stops19h 50m

$625

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 1/7

2:05 pm-10:50 am

2 stops15h 45m

London Heathrow

Wed 1/14

11:10 am-10:30 pm

2 stops16h 20m

$629

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 1/9

2:10 pm-6:40 am

1 stop11h 30m

London Heathrow

Tue 1/13

3:10 pm-11:23 pm

1 stop13h 13m

$637

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 2/14

2:05 pm-5:55 am

1 stop10h 50m

London Heathrow

Fri 2/20

6:30 pm-5:19 pm

2 stops27h 49m

$638

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 2/14

9:30 am-7:10 am

2 stops16h 40m

London Heathrow

Fri 2/20

6:30 pm-5:19 pm

2 stops27h 49m

$644

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?

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 October is your next best option. Flight prices from Louisville to London Heathrow Airport during October average around $694.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $803. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,071.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Louisville to London Heathrow Airport in the evening for as low as $882. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,038.

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

You are more likely to see cheaper flights to London Heathrow Airport from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $990 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Louisville for as low as $749 on momondo.

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

Direct flights	None

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

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 10h 38m.
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 November 2025, there are 6 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 American Airlines, representing 41% of all bookings. The subsequent popular airlines are Delta at 21%, Virgin Atlantic at 14%, and United Airlines at 10%.

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
KLM	PriceFrom $574	Free Cancellation	Rating 7.7 1,419 reviews	Search KLM flights
Virgin Atlantic	PriceFrom $580	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $598	Free Cancellation	Rating 6.7 7,535 reviews	Search British Airways flights
United Airlines	PriceFrom $678	Free Cancellation	Rating 7.4 9,039 reviews	Search United Airlines flights
Delta	PriceFrom $690	Free Cancellation	Rating 7.9 7,993 reviews	Search Delta flights
American Airlines	PriceFrom $692	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Stratford-upon-Avon

Crawley

Brentwood

Chelmsford

Salisbury

Wembley

Folkestone

Romford

Ilford

Cobham

Swindon

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

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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Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $345

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Cheap flights from Louisville to London from $221

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 3/25. 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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Big names and deals

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Filter for what you want

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Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets

Air Canada flights from Louisville to London Heathrow Airport

Our best Air Canada deals on Louisville to London Heathrow Airport flight tickets

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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

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

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?

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $803. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,071.

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

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

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

American Airlines, Aer Lingus, and Lufthansa are the most popular carriers operating 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

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

Direct flights

How far is Louisville Intl to London Heathrow by plane?

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

How many operators does momondo search 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?

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

What is the most popular airline 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?

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

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

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

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

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