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Cheap flights from London Heathrow Airport to Louisville from £345

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 16 January 2026.

Round-trip from

£458

One-way from

£345

Popular in

July

Cheapest in

January

Average price

£439
Iberia
  • Iberia
  • 11/2-18/2
  • 3 total stops
  • 52h 23m total
  • London to Louisville
Search Deals
12/5
  • 12/5
  • 3 total stops
  • 46h 48m total
  • London to Louisville
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 16 January 2026.

Wed 11/213:10
LHR
-
SDF
1 stop30h 53m
Iberia
Wed 18/206:00
SDF
-
LHR
2 stops21h 30m
Iberia
Deal found 14/1£458
Wed 4/209:00
LHR
-
SDF
2 stops16h 28m
United Airlines
Sun 8/214:05
SDF
-
LHR
1 stop12h 50m
United Airlines
Deal found 14/1£506
Wed 11/208:30
LHR
-
SDF
2 stops16h 58m
United Airlines
Wed 18/214:05
SDF
-
LHR
1 stop16h 10m
United Airlines
Deal found 14/1£512
Sat 28/207:30
LHR
-
SDF
2 stops17h 12m
United Airlines
Sat 7/314:35
SDF
-
LHR
2 stops14h 10m
United Airlines
Deal found 14/1£517
Mon 20/408:30
LHR
-
SDF
2 stops16h 46m
Lufthansa
Mon 27/413:55
SDF
-
LHR
1 stop16h 50m
Lufthansa
Deal found 13/1£518
Wed 11/214:10
LHR
-
SDF
1 stop14h 09m
British Airways
Wed 18/218:12
SDF
-
LHR
1 stop11h 13m
British Airways
Deal found 14/1£519

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 16 January 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

Wed 11/2

14:10-09:02

2 stops23h 52m

Louisville Intl

Wed 18/2

06:00-08:30

2 stops21h 30m

£482

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 4/2

09:00-20:28

2 stops16h 28m

Louisville Intl

Sun 8/2

14:05-07:55

1 stop12h 50m

£506

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 28/2

07:30-19:25

2 stops16h 55m

Louisville Intl

Sat 7/3

09:55-06:40

1 stop15h 45m

£512

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

08:30-20:16

2 stops16h 46m

Louisville Intl

Mon 27/4

13:55-11:45

1 stop16h 50m

£518

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 4/2

14:10-23:19

1 stop14h 09m

Louisville Intl

Sun 8/2

10:35-19:00

1 stop27h 25m

£535

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 12/5

20:50-14:38

3 stops46h 48m

£345

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 15/3

20:35-12:19

3 stops43h 44m

£382

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 12/5

10:50-22:09

2 stops16h 19m

£393

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sun 15/3

18:30-20:14

2 stops29h 44m

£400

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 16/2

14:50-12:21

3 stops50h 31m

£410

Flights are sorted by cheapest return flights first.

Deals found on 12/1

Showing 1-10 of 14 results
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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

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Louisville. Price data was last updated on 9 January 2026.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Louisville, you should look to book at least 8 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 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 £498). 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 16 January 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
1,440 reviews
Check prices

Comfort

7.6

Overall

7.7

Entertainment

7.1

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,440 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Comfort

7.6

Overall

7.7

Entertainment

7.1

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Finnair
7.6
Good
1,349 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Comfort

7.6

Overall

7.7

Entertainment

7.1

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Comfort

7.6

Overall

7.7

Entertainment

7.1

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,164 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Comfort

7.6

Overall

7.7

Entertainment

7.1

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,678 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Comfort

7.6

Overall

7.7

Entertainment

7.1

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 7 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 Iberia and United Airlines fly from London Heathrow Airport to Louisville in about 16h 28m. The time it takes to get you to your destination can typically vary by up to 7h 24m. 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 Finnair is currently your cheapest option to Louisville, with prices starting at £411. Additional return tickets that might be worth considering are offered by British Airways and Air France, with the lowest prices starting at £415 and £421, respectively. Users have found that Finnair is 31% 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 £498). 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 7 airlines flying from Heathrow to Louisville

Discover the top 7 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 16 January 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£411Average£566FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£415Average£587FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£421Average£739FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£440Average£594FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£458Average£632FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£481Average£611FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£483Average£567FlexibilityNo cancel feeOn-time76%
Search Lufthansa 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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