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 50% 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.

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

British Airways, Iberia, and Air Canada 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 March 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.

$305 Cheap Flights from Louisville to London Heathrow Airport in 2026

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

Prices are currently typical for flights on this route. Typical prices usually range from $752 to $993. The lowest price recently found on this route was $841.

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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.

4:00 pm - 8:00 am

SDF

LHR

11h 00m

1 stop

3:00 pm - 10:47 pm

LHR

SDF

12h 47m

1 stop

$841British Airways

Wed, Aug 26 - Wed, Sep 2

4:00 pm - 8:00 am

SDF

LHR

11h 00m

1 stop

7:50 am - 7:36 pm

LHR

SDF

16h 46m

2 stops

$842Multiple Airlines

Wed, Aug 26 - Wed, Sep 2

8:06 pm - 12:50 pm

SDF

LHR

11h 44m

1 stop

10:05 am - 6:45 pm

LHR

SDF

13h 40m

1 stop

$843British Airways

Mon, Aug 17 - Tue, Aug 25

8:06 pm - 12:50 pm

SDF

LHR

11h 44m

1 stop

6:15 am - 11:01 pm

LHR

SDF

21h 46m

2 stops

$844Multiple Airlines

Mon, Aug 17 - Tue, Aug 25

4:00 pm - 9:35 am

SDF

LHR

12h 35m

1 stop

2:45 pm - 11:01 pm

LHR

SDF

13h 16m

1 stop

$847Multiple Airlines

Mon, Aug 17 - Wed, Aug 26

6:11 pm - 11:15 am

SDF

LHR

12h 04m

1 stop

2:25 pm - 11:06 pm

LHR

SDF

13h 41m

1 stop

$848Multiple Airlines

Sun, Aug 16 - Tue, Aug 25

7:43 pm - 4:40 pm

SDF

LHR

15h 57m

2 stops

7:30 am - 7:19 pm

LHR

SDF

16h 49m

2 stops

$853Lufthansa

Wed, Aug 26 - Wed, Sep 2

7:43 pm - 5:40 pm

SDF

LHR

16h 57m

2 stops

1:30 pm - 12:05 am

LHR

SDF

15h 35m

2 stops

$855Lufthansa

Mon, Aug 17 - Tue, Aug 25

3:24 pm - 9:40 pm

SDF

LHR

25h 16m

2 stops

6:40 am - 11:59 pm

LHR

SDF

22h 19m

2 stops

$859Scandinavian Airlines

Mon, Sep 7 - Mon, Sep 14

5:48 pm - 7:40 pm

SDF

LHR

20h 52m

2 stops

7:30 pm - 11:56 pm

LHR

SDF

33h 26m

2 stops

$863Lufthansa

Mon, Apr 20 - Thu, Apr 30

British Airways flights from Louisville to London Heathrow Airport

Our best British Airways deals on Louisville to London Heathrow Airport flight tickets

British Airways

Aug 26

SDF4:00 pmLouisville Intl

11h 00m

1 stop

LHR8:00 amLondon Heathrow

Sep 2

LHR3:00 pmLondon Heathrow

12h 47m

1 stop

SDF10:47 pmLouisville Intl

$841

British Airways

Aug 17

SDF8:06 pmLouisville Intl

11h 44m

1 stop

LHR12:50 pmLondon Heathrow

Aug 25

LHR10:05 amLondon Heathrow

13h 40m

1 stop

SDF6:45 pmLouisville Intl

$843

British Airways

Sep 1

SDF4:00 pmLouisville Intl

11h 00m

1 stop

LHR8:00 amLondon Heathrow

Sep 17

LHR6:15 amLondon Heathrow

21h 43m

2 stops

SDF10:58 pmLouisville Intl

$867

Iberia flights from Louisville to London Heathrow Airport

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

Iberia

Apr 29

SDF12:11 pmLouisville Intl

14h 29m

1 stop

LHR7:40 amLondon Heathrow

May 6

LHR6:15 amLondon Heathrow

20h 15m

2 stops

SDF9:30 pmLouisville Intl

$869

Iberia

May 6

SDF11:16 amLouisville Intl

18h 14m

1 stop

LHR10:30 amLondon Heathrow

May 13

LHR7:50 amLondon Heathrow

18h 40m

2 stops

SDF9:30 pmLouisville Intl

$875

Iberia

Aug 17

SDF6:11 pmLouisville Intl

11h 19m

1 stop

LHR10:30 amLondon Heathrow

Aug 26

LHR6:15 amLondon Heathrow

21h 46m

2 stops

SDF11:01 pmLouisville Intl

$886

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 - LHR

SDFLHR

Louisville Intl

Wed 8/26

4:00 pm-8:00 am

1 stop11h 00m

London Heathrow

Wed 9/2

3:00 pm-10:47 pm

1 stop12h 47m

$841

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/26

4:00 pm-8:00 am

1 stop11h 00m

London Heathrow

Wed 9/2

7:50 am-7:36 pm

2 stops16h 46m

$842

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

8:06 pm-12:50 pm

1 stop11h 44m

London Heathrow

Tue 8/25

10:05 am-6:45 pm

1 stop13h 40m

$843

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

8:06 pm-12:50 pm

1 stop11h 44m

London Heathrow

Tue 8/25

6:15 am-11:01 pm

2 stops21h 46m

$844

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

4:00 pm-9:35 am

1 stop12h 35m

London Heathrow

Wed 8/26

2:45 pm-11:01 pm

1 stop13h 16m

$847

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 8/16

6:11 pm-11:15 am

1 stop12h 04m

London Heathrow

Tue 8/25

2:25 pm-11:06 pm

1 stop13h 41m

$848

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/26

7:43 pm-4:40 pm

2 stops15h 57m

London Heathrow

Wed 9/2

7:30 am-7:19 pm

2 stops16h 49m

$853

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

7:43 pm-5:40 pm

2 stops16h 57m

London Heathrow

Tue 8/25

1:30 pm-12:05 am

2 stops15h 35m

$855

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/7

3:24 pm-9:40 pm

2 stops25h 16m

London Heathrow

Mon 9/14

6:40 am-11:59 pm

2 stops22h 19m

$859

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 4/20

5:48 pm-7:40 pm

2 stops20h 52m

London Heathrow

Thu 4/30

7:30 pm-11:56 pm

2 stops33h 26m

$863

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 $619. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from Louisville to London Heathrow Airport during January average around $645.

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 $879 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 $688 on momondo.

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

You could potentially save up to 11% 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

Fastest flight time	9h 50m
Direct flights	None

The fastest flight from Louisville to London Heathrow Airport takes 9h 50m

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 9h 50m.
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 March 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 American Airlines, representing 37% of all bookings. The subsequent popular airlines are British Airways at 24%, Delta at 15%, and United Airlines at 12%.

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
Virgin Atlantic	PriceFrom $577	Free Cancellation	Rating 7.5 682 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $588	Free Cancellation	Rating 7.9 8,315 reviews	Search Delta flights
British Airways	PriceFrom $589	Free Cancellation	Rating 6.7 7,809 reviews	Search British Airways flights
United Airlines	PriceFrom $678	Free Cancellation	Rating 7.4 9,458 reviews	Search United Airlines flights
American Airlines	PriceFrom $692	Free Cancellation	Rating 7.1 11,485 reviews	Search American Airlines flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Crawley

Stratford-upon-Avon

Wembley

Hayes

Dartford

Croydon

Harrow

Watford

Brentwood

Guildford

Stansted

Cobham

Folkestone

Romford

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 $422

Flights to London City Airportfrom $617

Flights to London Stansted Airportfrom $436

Flights to London Luton Airportfrom $444

Flights to Glasgow Intl Airportfrom $524

Flights to Belfast Intl Airport

Flights to London Southend Airportfrom $723

Flights to Belfast City Airportfrom $711

Cheap flights from Louisville to London from $305

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 7/21. 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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British Airways flights from Louisville to London Heathrow Airport

Our best British Airways deals on Louisville to London Heathrow Airport flight tickets

Iberia flights from Louisville to London Heathrow Airport

Our best Iberia 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?

How far in advance should I book a flight 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

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

Fastest flight time

Direct flights

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

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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