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Cheap flights from London Heathrow Airport to Louisville from £428

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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
1 Feb — 8 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Louisville

Enter your travel dates to find the best prices.

Best flights from Heathrow to Louisville
Discover carefully curated flight deals from Heathrow to Louisville that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 January 2026.

Wed 4/209:00LHR - SDF
2 stops16h 28mUnited Airlines
Sun 8/214:10SDF - LHR
1 stop15h 40mUnited Airlines
Deal found 31/12£505
Wed 4/214:10LHR - SDF
1 stop14h 09mBritish Airways
Sun 8/210:35SDF - LHR
1 stop27h 25mBritish Airways
Deal found 30/12£533
Mon 20/406:30LHR - SDF
2 stops14h 24mDelta
Mon 27/417:54SDF - LHR
2 stops14h 11mDelta
Deal found 30/12£548
Sat 18/408:45LHR - SDF
2 stops16h 31mUnited Airlines
Sat 25/413:55SDF - LHR
2 stops15h 45mUnited Airlines
Deal found 1/1£517
Mon 20/412:15LHR - SDF
1 stop14h 13mBritish Airways
Mon 27/419:05SDF - LHR
1 stop10h 25mBritish Airways
Deal found 1/1£544
Fri 1/510:00LHR - SDF
1 stop16h 58mUnited Airlines
Fri 8/505:50SDF - LHR
1 stop20h 05mUnited Airlines
Deal found 1/1£544

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 2 January 2026.

Round-trip from

£505

One-way from

£428

Popular in

December

Cheapest in

January

Average price

£436
United Airlines
  • United Airlines
  • 4/2-8/2
  • 3 total stops
  • 32h 08m total
  • London to Louisville
Search Deals
8/1
  • 8/1
  • 2 total stops
  • 18h 01m total
  • London to Louisville
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 2 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 4/2

09:00-20:28

2 stops16h 28m

Louisville Intl

Sun 8/2

14:10-10:50

1 stop15h 40m

£505

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 18/4

08:45-20:16

2 stops16h 31m

Louisville Intl

Sat 25/4

13:55-10:40

2 stops15h 45m

£517

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

£533

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

12:15-21:28

1 stop14h 13m

Louisville Intl

Mon 27/4

19:05-10:30

1 stop10h 25m

£544

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 1/5

10:00-21:58

1 stop16h 58m

Louisville Intl

Fri 8/5

05:50-06:55

1 stop20h 05m

£544

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

06:30-15:54

2 stops14h 24m

Louisville Intl

Mon 27/4

17:54-13:05

2 stops14h 11m

£548

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 8/1

08:15-21:16

2 stops18h 01m

£428

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 13/1

18:30-14:41

3 stops49h 11m

£452

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 8/1

09:10-19:31

1 stop15h 21m

£494

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 13/1

08:20-20:47

1 stop17h 27m

£497

Flights are sorted by cheapest return flights first.

Deals found on 1/1

Showing 1-10 of 13 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 26 December 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 55 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 £367). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £496). 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 2 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
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.7

Overall

7.7

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,435 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.7

Overall

7.7

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Finnair
7.6
Good
1,343 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.7

Overall

7.7

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.7

Overall

7.7

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,133 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.7

Overall

7.7

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,637 reviews
KLM
7.7
Good
1,435 reviews
Check prices

Entertainment

7.1

Crew

8.4

Boarding

7.7

Overall

7.7

Comfort

7.6

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 8 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 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 . 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 £413. Additional return tickets that might be worth considering are offered by Finnair and Air France, with the lowest prices starting at £417 and £419, 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 £367). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £496). 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 8 airlines flying from Heathrow to Louisville

Discover the top 8 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 2 January 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£417Average£560FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£419Average£580FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£419Average£735FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£438Average£591FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapest£440Average£651FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AtlanticCheapest£456Average£621FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£478Average£608FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£481Average£564FlexibilityNo 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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