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Heathrow

$305+ Cheap flights from Louisville (SDF) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
Apr 26 — May 31
Sun 4/26
Sun 5/3
1 adult, Economy
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Cheap flight deals from Louisville to Heathrow

Cheapest flights from Louisville to Heathrow
Explore the most affordable flight options available from Louisville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.

This The Travel House deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:00 pm
SDF
-
LHR
2 stops23h 40m
Scandinavian Airlines
Sun 9/66:40 pm
LHR
-
SDF
2 stops32h 56m
Scandinavian Airlines
Deal found 3/23$839
This Scandinavian Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/73:24 pm
SDF
-
LHR
2 stops19h 36m
Scandinavian Airlines
Thu 12/107:30 pm
LHR
-
SDF
2 stops32h 05m
Scandinavian Airlines
Deal found 3/25$841
This oojo deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:00 pm
SDF
-
LHR
1 stop11h 00m
British Airways
Tue 8/2512:00 pm
LHR
-
SDF
1 stop12h 36m
British Airways
Deal found 3/24$843
This Justfly.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:43 pm
SDF
-
LHR
1 stop12h 22m
Multiple Airlines
Tue 8/257:50 am
LHR
-
SDF
2 stops20h 11m
Multiple Airlines
Deal found 3/25$844
This Cheapflightsfares deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:43 pm
SDF
-
LHR
2 stops17h 42m
Lufthansa
Tue 8/259:30 am
LHR
-
SDF
2 stops14h 49m
Lufthansa
Deal found 3/24$846
This Finnair deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:11 pm
SDF
-
LHR
1 stop12h 04m
Multiple Airlines
Tue 9/112:15 pm
LHR
-
SDF
1 stop15h 46m
Multiple Airlines
Deal found 3/24$848
This FlightHub deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:12 pm
SDF
-
LHR
2 stops16h 18m
Multiple Airlines
Wed 9/27:50 am
LHR
-
SDF
2 stops16h 46m
Multiple Airlines
Deal found 3/24$849
This FlightHub deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:00 pm
SDF
-
LHR
2 stops24h 30m
Scandinavian Airlines
Tue 4/286:40 am
LHR
-
SDF
2 stops22h 19m
Scandinavian Airlines
Deal found 3/24$853
This Cheapflightsfares deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/212:30 pm
SDF
-
LHR
2 stops17h 10m
Lufthansa
Tue 4/288:30 am
LHR
-
SDF
2 stops20h 29m
Lufthansa
Deal found 3/22$855
This Cheapflightsfares deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:48 pm
SDF
-
LHR
2 stops19h 37m
Lufthansa
Thu 4/307:30 pm
LHR
-
SDF
2 stops33h 26m
Lufthansa
Deal found 3/23$863

Find flight deals from Louisville to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$839
(The Travel House)

One-way from

$305
(oojo)

Popular in

June

Cheapest in

February

Average price

$795
Provider with most accurate pricing for Louisville Intl-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-London Heathrow flights.
Search Deals
From Louisville Intl to London Heathrow
Search Deals
One-way flight from Louisville Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($271 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
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

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 8/23

6:11 pm-11:15 am

1 stop12h 04m

London Heathrow

Tue 9/1

12:15 pm-11:01 pm

1 stop15h 46m

$848

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 9/20

7:07 pm-11:15 am

1 stop11h 08m

London Heathrow

Sat 10/3

9:15 am-4:10 pm

1 stop11h 55m

$949
Quickest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 5/9

6:17 am-9:25 pm

1 stop10h 08m

London Heathrow

Wed 5/13

8:00 am-2:55 pm

1 stop11h 55m

$957

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 8/15

6:15 am-9:35 pm

1 stop10h 20m

London Heathrow

Thu 8/20

2:10 pm-10:22 pm

1 stop13h 12m

$957

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/26

1:48 pm-6:55 am

1 stop12h 07m

London Heathrow

Fri 8/28

8:30 am-6:56 pm

2 stops15h 26m

$980

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/24

6:00 pm-11:55 am

1 stop12h 55m

London Heathrow

Wed 8/26

12:15 pm-7:19 pm

1 stop12h 04m

$982

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/19

1:48 pm-6:55 am

1 stop12h 07m

London Heathrow

Thu 8/20

12:15 pm-7:19 pm

1 stop12h 04m

$982

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 4/17

5:48 pm-11:55 am

1 stop13h 07m

London Heathrow

Mon 4/27

2:10 pm-10:30 pm

1 stop13h 20m

$1,007

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 8/22

6:15 am-9:35 pm

1 stop10h 20m

London Heathrow

Sat 8/29

3:20 pm-10:57 pm

1 stop12h 37m

$1,007

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 8/23

6:15 am-9:35 pm

1 stop10h 20m

London Heathrow

Sat 8/29

8:30 am-6:56 pm

2 stops15h 26m

$1,030

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Louisville to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Heathrow in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Louisville-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Louisville-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Louisville to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Louisville to London Heathrow Airport

How far ahead should I book a flight from Louisville to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Heathrow. Price data was last updated on March 13, 2026.

To ensure you get the cheapest price possible for a flight from Louisville to London Heathrow Airport, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Louisville to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of $520). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $918). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Louisville to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated March 27, 2026.
See what other customers who have flown with Delta,Virgin Atlantic, andUnited Airlines from Louisville to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,350 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,350 reviews
Delta
7.9
Good
8,350 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
685 reviews
Delta
7.9
Good
8,350 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,500 reviews
Delta
7.9
Good
8,350 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,514 reviews
Delta
7.9
Good
8,350 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,824 reviews
Delta
7.9
Good
8,350 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to London Heathrow?

    If you book a flight to London Heathrow from Louisville, you will be flying from Louisville Intl, which is the city’s only airport. Louisville Intl (SDF) is located 5.3 mi from the center of Louisville. There are 0 flights from Louisville Intl to London Heathrow per day from 5 different airlines.

  • How long is the flight from Louisville to London Heathrow Airport?

    British Airways and United Airlines can get you from Louisville to London Heathrow Airport in just under 10h 08m. Your travel time can differ by up to 1h. Louisville and London Heathrow Airport are separated by a distance of 4033 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Louisville to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Louisville to London Heathrow Airport round-trip from $577. Other airlines that can offer you cheap pricing are Delta, from $588, and British Airways, from $589. You may be able to fly from Louisville to London Heathrow Airport for 34% less than the average price by searching for these airlines.

  • Can I find deals for flights from Louisville to Heathrow that include hotel bookings?

    Yes. In addition to deals on Louisville to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Heathrow.

  • Can I find deals for business class flights from Louisville to Heathrow?

    Yes. Cheapflights offers flight deals from Louisville to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of $520). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $918). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Louisville to Heathrow

Discover the top 5 airlines that operate flights from Louisville to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$577Average$799FlexibilityNo cancel feeOn-time72%
DeltaCheapest$588Average$855FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$589Average$801FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$678Average$975FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$692Average$1,037FlexibilityNo cancel feeOn-time71%

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