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Cheap flights from London Heathrow Airport to Louisville from £411

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
22 Apr — 29 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 23 March 2026.

Wed 15/412:00
LHR
-
SDF
1 stop12h 02m
British Airways
Wed 22/419:52
SDF
-
LHR
1 stop11h 58m
British Airways
Deal found 18/3£629
Wed 11/1110:05
LHR
-
SDF
2 stops17h 54m
British Airways
Sun 15/1117:20
SDF
-
LHR
1 stop32h 35m
British Airways
Deal found 18/3£638
Tue 5/513:10
LHR
-
SDF
1 stop13h 20m
British Airways
Tue 12/516:35
SDF
-
LHR
1 stop10h 25m
British Airways
Deal found 21/3£649
Tue 24/1119:30
LHR
-
SDF
2 stops32h 05m
Scandinavian Airlines
Sun 29/1115:24
SDF
-
LHR
2 stops19h 36m
Scandinavian Airlines
Deal found 22/3£656
Wed 16/909:15
LHR
-
SDF
1 stop11h 55m
British Airways
Wed 23/920:04
SDF
-
LHR
1 stop11h 06m
British Airways
Deal found 18/3£657
Wed 15/410:20
LHR
-
SDF
2 stops18h 28m
Finnair
Wed 22/419:01
SDF
-
LHR
2 stops20h 39m
Finnair
Deal found 18/3£665
Wed 15/407:25
LHR
-
SDF
2 stops17h 51m
United Airlines
Wed 22/414:20
SDF
-
LHR
1 stop10h 35m
United Airlines
Deal found 18/3£666
Wed 6/509:30
LHR
-
SDF
2 stops19h 29m
United Airlines
Wed 13/506:17
SDF
-
LHR
1 stop10h 08m
United Airlines
Deal found 22/3£668
Tue 5/510:50
LHR
-
SDF
2 stops16h 40m
United Airlines
Tue 12/516:17
SDF
-
LHR
1 stop12h 03m
United Airlines
Deal found 21/3£669
Mon 4/510:50
LHR
-
SDF
2 stops16h 40m
United Airlines
Mon 11/515:36
SDF
-
LHR
2 stops13h 39m
United Airlines
Deal found 22/3£672

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 23 March 2026.

Round-trip from

£629

One-way from

£411

Popular in

July

Cheapest in

September

Average price

£622
British Airways
  • British Airways
  • 15/4-22/4
  • 2 total stops
  • 24h 00m total
  • London to Louisville
Search Deals
3/5
  • 3/5
  • 2 total stops
  • 25h 53m total
  • London to Louisville
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£39 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 23 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

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 5/5

07:25-18:35

2 stops16h 10m

Louisville Intl

Tue 12/5

14:00-09:20

2 stops14h 20m

£669

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 16/9

11:45-23:59

2 stops17h 14m

Louisville Intl

Wed 23/9

15:24-10:20

2 stops13h 56m

£674

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 16/9

12:30-21:39

1 stop14h 09m

Louisville Intl

Wed 23/9

20:04-12:10

1 stop11h 06m

£678

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 18/4

10:50-23:44

2 stops17h 54m

Louisville Intl

Mon 18/5

16:17-09:20

1 stop12h 03m

£696

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 7/5

11:10-00:23

1 stop18h 13m

Louisville Intl

Mon 11/5

16:35-08:00

1 stop10h 25m

£708

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 12/5

10:45-21:18

1 stop15h 33m

Louisville Intl

Sun 17/5

17:30-14:35

1 stop16h 05m

£708

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 31/8

07:05-22:36

3 stops20h 31m

Louisville Intl

Tue 1/12

13:00-18:50

3 stops24h 50m

£740

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 20/5

16:55-00:25

1 stop12h 30m

Louisville Intl

Tue 26/5

17:08-08:00

1 stop9h 52m

£798
Fastest return journey

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 1/6

12:00-19:23

1 stop12h 23m

Louisville Intl

Mon 8/6

17:08-08:00

1 stop9h 52m

£798
Cheapest one-way

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 15/9

12:30-21:39

1 stop14h 09m

£427

Flights are sorted by cheapest return flights first.

Deals found on 18/3

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 £370). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £525). 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 23 March 2026.
Read reviews from past customers who have flown with Finnair,Virgin Atlantic, andUnited Airlines 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.
Finnair
7.7
Good
1,374 reviews
Check prices

Entertainment

6.9

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.7
Good
1,374 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Entertainment

6.9

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Virgin Atlantic
7.5
Good
685 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Entertainment

6.9

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
United Airlines
7.4
Good
9,463 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Entertainment

6.9

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Lufthansa
6.8
Okay
7,863 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Entertainment

6.9

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
British Airways
6.7
Okay
7,813 reviews
Finnair
7.7
Good
1,374 reviews
Check prices

Entertainment

6.9

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

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 United Airlines, Delta, and British Airways fly from London Heathrow Airport to Louisville in about 14h 09m. The time it takes to get you to your destination can typically vary by up to 3h 05m. 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 £472. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £483 and £486, 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 £370). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £525). 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 23 March 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£472Average£669FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£483Average£635FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£486Average£566FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£497Average£624FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£513Average£600FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£513Average£675FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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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