Cheap flights from London Heathrow Airport to Louisville from £398

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
8 Apr — 15 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 9 March 2026.

Mon 13/410:50
LHR
-
SDF
2 stops16h 40m
Lufthansa
Sun 19/417:48
SDF
-
LHR
1 stop31h 57m
Lufthansa
Deal found 6/3£591
Mon 13/416:55
LHR
-
SDF
1 stop12h 30m
British Airways
Sun 19/419:52
SDF
-
LHR
1 stop30h 03m
British Airways
Deal found 5/3£593
Mon 13/407:25
LHR
-
SDF
2 stops17h 51m
United Airlines
Sun 19/415:30
SDF
-
LHR
1 stop35h 10m
United Airlines
Deal found 5/3£602
Wed 7/1007:30
LHR
-
SDF
2 stops17h 04m
United Airlines
Sun 11/1015:50
SDF
-
LHR
1 stop34h 50m
United Airlines
Deal found 3/3£603
Mon 20/412:15
LHR
-
SDF
1 stop14h 15m
British Airways
Mon 27/416:35
SDF
-
LHR
1 stop10h 25m
British Airways
Deal found 4/3£604
Wed 7/1009:15
LHR
-
SDF
1 stop17h 23m
British Airways
Sun 11/1020:08
SDF
-
LHR
1 stop32h 17m
British Airways
Deal found 3/3£605
Tue 21/409:45
LHR
-
SDF
1 stop13h 45m
British Airways
Tue 28/418:41
SDF
-
LHR
1 stop13h 09m
British Airways
Deal found 7/3£607
Sat 18/414:45
LHR
-
SDF
1 stop14h 03m
British Airways
Thu 23/419:52
SDF
-
LHR
1 stop11h 58m
British Airways
Deal found 4/3£608
Mon 20/414:05
LHR
-
SDF
2 stops29h 42m
United Airlines
Mon 27/414:20
SDF
-
LHR
1 stop13h 00m
United Airlines
Deal found 4/3£612
Wed 16/907:50
LHR
-
SDF
2 stops20h 08m
Iberia
Wed 23/915:32
SDF
-
LHR
1 stop15h 43m
Iberia
Deal found 4/3£613

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 9 March 2026.

Round-trip from

£591

One-way from

£398

Popular in

July

Cheapest in

September

Average price

£618
Lufthansa
  • Lufthansa
  • 13/4-19/4
  • 3 total stops
  • 48h 37m total
  • London to Louisville
29/4
  • 29/4
  • 1 total stop
  • 28h 45m total
  • London to Louisville
Highest demand for flights based on searches. 7% potential increase in price (£38 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in March 2026

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 9 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

16:55-00:25

1 stop12h 30m

Louisville Intl

Mon 27/4

19:01-10:30

1 stop10h 29m

£606

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 21/4

08:45-20:16

2 stops16h 31m

Louisville Intl

Tue 28/4

13:55-09:20

2 stops14h 25m

£621

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 18/4

10:50-23:44

2 stops17h 54m

Louisville Intl

Thu 23/4

14:20-10:40

2 stops15h 20m

£624

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

15:20-23:12

1 stop12h 52m

Louisville Intl

Mon 27/4

14:30-06:55

1 stop11h 25m

£633

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 19/4

09:30-19:42

2 stops15h 12m

Louisville Intl

Sun 26/4

15:30-07:40

1 stop35h 10m

£633

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 8/5

06:50-19:22

2 stops17h 32m

Louisville Intl

Mon 11/5

14:30-10:25

2 stops14h 55m

£656

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 24/4

10:50-22:30

2 stops16h 40m

Louisville Intl

Mon 27/4

14:20-08:20

1 stop13h 00m

£656

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 19/4

08:40-21:20

2 stops17h 40m

Louisville Intl

Sun 26/4

19:54-14:35

2 stops13h 41m

£682

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 3/5

10:00-20:00

1 stop15h 00m

Louisville Intl

Sat 9/5

14:30-06:55

1 stop11h 25m

£687
Cheapest one-way

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 29/4

11:00-10:45

1 stop28h 45m

£398

Flights are sorted by cheapest return flights first.

Deals found on 4/3

Showing 1-10 of 18 resultsSorted by cheapest first
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 £368). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £518). 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 for a return flight from London Heathrow Airport to Louisville?

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 9 March 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.

Boarding

7.8

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.6

Overall

7.8

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

Boarding

7.8

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.6

Overall

7.8

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

Boarding

7.8

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.6

Overall

7.8

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

Boarding

7.8

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.6

Overall

7.8

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

Boarding

7.8

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.6

Overall

7.8

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

Boarding

7.8

Food

7.3

Entertainment

7.1

Crew

8.4

Comfort

7.6

Overall

7.8

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 British Airways, United Airlines, and Lufthansa 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 4h 01m. 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 £468. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £481 and £483, 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 £368). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £518). 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

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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 9 March 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£468Average£648FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£481Average£632FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£483Average£563FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£495Average£621FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£510Average£650FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£511Average£616FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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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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