Cheap flights from London Heathrow Airport to Louisville from £390

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Louisville Intl are usually found in January or February, booked 8 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

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 26 November 2025.

Round-trip from

£543

One-way from

£390

Popular in

December

Cheapest in

January

Average price

£695
12/1-26/1
  • 12/1-26/1
  • 5 total stops
  • 47h 13m total
  • London to Louisville
Lufthansa
  • Lufthansa
  • 15/4
  • 2 total stops
  • 16h 36m total
  • London to Louisville
Highest demand for flights based on searches. 4% potential increase in price (£19 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in November 2025

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 26 November 2025.

Mon 15/1214:10LHR - SDF
1 stop12h 50mBritish Airways
Fri 16/115:33SDF - LHR
1 stop10h 47mBritish Airways
Deal found 24/11£657
Wed 17/1206:15LHR - SDF
2 stops18h 49mBritish Airways
Wed 14/115:33SDF - LHR
1 stop12h 42mBritish Airways
Deal found 25/11£687
Mon 15/1206:30LHR - SDF
2 stops17h 22mDelta
Fri 16/110:41SDF - LHR
2 stops15h 24mDelta
Deal found 24/11£720
Wed 17/1214:10LHR - SDF
1 stop13h 46mIberia
Wed 14/111:13SDF - LHR
1 stop18h 12mIberia
Deal found 25/11£737
Wed 17/1207:50LHR - SDF
2 stops20h 06mAer Lingus
Wed 14/113:32SDF - LHR
2 stops19h 53mAer Lingus
Deal found 25/11£744
Mon 15/1211:10LHR - SDF
2 stops17h 22mMultiple Airlines
Fri 16/108:29SDF - LHR
3 stops17h 41mMultiple Airlines
Deal found 24/11£1,018
Wed 17/1222:35LHR - SDF
3 stops30h 24mMultiple Airlines
Wed 14/113:55SDF - LHR
3 stops36h 15mMultiple Airlines
Deal found 25/11£1,413

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 26 November 2025.
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 12/1

14:45-22:12

1 stop12h 27m

Louisville Intl

Mon 26/1

16:32-10:00

1 stop12h 28m

£578

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 11/2

12:35-23:19

1 stop15h 44m

Louisville Intl

Sat 21/2

15:30-12:00

1 stop15h 30m

£588

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 11/2

08:30-19:43

2 stops16h 13m

Louisville Intl

Sat 21/2

17:54-06:30

2 stops55h 36m

£606

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 22/1

12:35-23:19

1 stop15h 44m

Louisville Intl

Mon 26/1

13:15-07:20

1 stop13h 05m

£607

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 22/1

14:10-23:19

1 stop14h 09m

Louisville Intl

Mon 26/1

19:13-10:25

1 stop10h 12m

£609

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 11/2

08:30-19:43

2 stops16h 13m

Louisville Intl

Sat 21/2

17:54-11:15

1 stop12h 21m

£612

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 12/1

08:45-22:30

2 stops18h 45m

Louisville Intl

Mon 26/1

18:12-11:15

1 stop12h 03m

£615

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 1/5

15:00-00:14

1 stop14h 14m

Louisville Intl

Fri 8/5

16:45-07:50

1 stop10h 05m

£633

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 22/1

13:35-22:30

1 stop13h 55m

Louisville Intl

Mon 26/1

13:50-06:20

1 stop11h 30m

£638

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 22/1

09:00-23:23

2 stops19h 23m

Louisville Intl

Mon 26/1

14:05-08:30

2 stops13h 25m

£642

Flights are sorted by cheapest return flights first.

Deals found on 24/11

Showing 1-10 of 21 results
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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 21 November 2025.

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 £376). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £508). 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.

What is the cheapest time of day to fly from LHR to SDF?

Find hourly flight availability from Heathrow to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 November 2025.

It’s typically best to fly out from London Heathrow Airport to Louisville in the afternoon. Doing so could potentially save you 3% on the flight price compared to flying in the evening, which is usually more expensive.

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 26 November 2025.
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.

Comfort

7.6

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Comfort

7.6

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Comfort

7.6

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Comfort

7.6

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Comfort

7.6

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Comfort

7.6

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 British Airways fly from London Heathrow Airport to Louisville in about 15h 44m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 4033 mi.

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

    Flying on British Airways is currently your cheapest option to Louisville, with prices starting at £423. Additional return tickets that might be worth considering are offered by Finnair and Air France, with the lowest prices starting at £428 and £430, respectively. Users have found that British Airways 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 £376). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £508). 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

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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 26 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£423Average£588FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£428Average£567FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Air FranceCheapest£430Average£705FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£449Average£583FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£468Average£633FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£478Average£579FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£488Average£604FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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