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Cheap flights from London Heathrow Airport to Louisville from £388

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
27 Mar — 3 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Louisville

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Louisville
Explore the most affordable flight options available from Heathrow to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 February 2026.

Tue 8/918:05
LHR
-
SDF
2 stops23h 40m
American Airlines
Mon 14/915:32
SDF
-
LHR
1 stop11h 08m
American Airlines
Deal found 22/2£546
Mon 14/915:00
LHR
-
SDF
1 stop14h 07m
Multiple Airlines
Mon 28/915:32
SDF
-
LHR
1 stop14h 18m
Multiple Airlines
Deal found 23/2£563
Tue 15/909:15
LHR
-
SDF
1 stop11h 55m
Multiple Airlines
Tue 29/915:32
SDF
-
LHR
1 stop14h 18m
Multiple Airlines
Deal found 24/2£565
Mon 7/918:10
LHR
-
SDF
2 stops33h 51m
Multiple Airlines
Sun 13/918:44
SDF
-
LHR
1 stop14h 41m
Multiple Airlines
Deal found 22/2£568
Mon 23/1111:00
LHR
-
SDF
1 stop16h 59m
Multiple Airlines
Sat 28/1117:20
SDF
-
LHR
2 stops42h 15m
Multiple Airlines
Deal found 22/2£573
Mon 23/1114:10
LHR
-
SDF
1 stop12h 19m
American Airlines
Fri 27/1106:50
SDF
-
LHR
2 stops20h 30m
American Airlines
Deal found 22/2£576
Tue 15/909:15
LHR
-
SDF
1 stop11h 55m
British Airways
Tue 22/917:56
SDF
-
LHR
1 stop10h 29m
British Airways
Deal found 24/2£577
Wed 16/912:30
LHR
-
SDF
1 stop16h 37m
British Airways
Mon 21/912:12
SDF
-
LHR
1 stop13h 43m
British Airways
Deal found 23/2£578
Tue 15/906:15
LHR
-
SDF
2 stops21h 43m
Multiple Airlines
Tue 22/917:56
SDF
-
LHR
1 stop10h 29m
Multiple Airlines
Deal found 24/2£580
Mon 20/410:50
LHR
-
SDF
2 stops16h 40m
Lufthansa
Mon 27/414:20
SDF
-
LHR
1 stop10h 35m
Lufthansa
Deal found 24/2£581
Tue 14/409:15
LHR
-
SDF
1 stop12h 08m
British Airways
Tue 21/412:11
SDF
-
LHR
1 stop13h 39m
British Airways
Deal found 24/2£589

Find flight deals from Heathrow to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Louisville (SDF). 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 25 February 2026.

Round-trip from

£581

One-way from

£388

Popular in

July

Cheapest in

September

Average price

£586
Lufthansa
  • Lufthansa
  • 20/4-27/4
  • 3 total stops
  • 28h 30m total
  • London to Louisville
Search Deals
Lufthansa
  • Lufthansa
  • 20/4
  • 2 total stops
  • 16h 40m total
  • London to Louisville
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Louisville 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 858,174 searches. Data last updated 25 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Louisville that are best for you.

Fly from

Heathrow

Fly to

Louisville

Route

Depart

Return

Price

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

10:50-22:30

2 stops16h 40m

Louisville Intl

Mon 27/4

14:20-05:55

1 stop10h 35m

£581

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 30/4

06:55-23:59

2 stops22h 04m

Louisville Intl

Thu 7/5

09:10-06:45

1 stop16h 35m

£625

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 19/4

16:55-00:25

1 stop12h 30m

Louisville Intl

Sun 26/4

19:05-10:30

1 stop10h 25m

£667

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 19/4

12:40-23:12

2 stops39h 32m

Louisville Intl

Sun 26/4

07:20-06:35

2 stops18h 15m

£675

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 1/5

10:45-21:20

1 stop15h 35m

Louisville Intl

Fri 8/5

19:59-14:35

2 stops13h 36m

£696

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 25/3

08:30-20:14

2 stops15h 44m

Louisville Intl

Wed 1/4

10:00-05:55

2 stops14h 55m

£705

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 7/4

07:30-19:42

2 stops17h 12m

Louisville Intl

Tue 14/4

09:07-05:55

2 stops15h 48m

£716

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

10:50-22:30

2 stops16h 40m

£388

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 12/5

13:05-11:41

2 stops27h 36m

£398

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 12/5

13:10-00:23

1 stop16h 13m

£402

Flights are sorted by cheapest return flights first.

Deals found on 23/2

Showing 1-10 of 19 results
1
2

Best time to book a flight from Heathrow to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Heathrow with our price prediction graph.
Estimated return 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 London Heathrow Airport to Louisville

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

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Louisville (average of £365). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £519). 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.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. 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 Louisville. Reviews last updated 25 February 2026.
Read reviews from past customers who have flown with KLM, Finnair, andVirgin Atlantic from London Heathrow Airport to Louisville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,460 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,460 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Finnair
7.6
Good
1,369 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
679 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,345 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,764 reviews
KLM
7.7
Good
1,460 reviews
Check prices

Food

7.3

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Louisville. 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 into for flights to Louisville from London Heathrow?

    Most people fly into Louisville Intl (SDF) if they book a flight to Louisville from London Heathrow. On average, Louisville Intl has 0 inbound flights from London Heathrow per day from 6 airlines. Louisville Intl is conveniently located just 5.3 mi from Louisville’s city center.

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

    Airlines like Lufthansa, United Airlines, and British Airways fly from London Heathrow Airport to Louisville in about 12h 30m. The time it takes to get you to your destination can typically vary by up to 9h 34m. Airlines will cover a distance of 4033 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Flying on KLM is currently your cheapest option to Louisville, with prices starting at £465. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £478 and £480, respectively. Users have found that KLM is 26% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Louisville 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 London Heathrow Airport to Louisville?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Louisville (average of £365). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £519). 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

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 6 airlines flying from Heathrow to Louisville

Discover the top 6 airlines that operate flights from Heathrow to Louisville. 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 858,174 searches. Data last updated 25 February 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£465Average£590FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£478Average£627FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£480Average£559FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£494Average£621FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£497Average£641FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£507Average£609FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Louisville?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Louisville. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Louisville?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Louisville for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Louisville with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Louisville with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Louisville become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Louisville from Heathrow today and book when prices fit your budget.

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