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Cheap flights from London Heathrow Airport to Louisville from £447

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
17 Jun — 24 Jun1
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 18 May 2026.

Wed 16/907:30
LHR
-
SDF
2 stops19h 58m
Lufthansa
Wed 23/913:13
SDF
-
LHR
1 stop13h 02m
Lufthansa
Deal found 16/5£676
Tue 15/912:30
LHR
-
SDF
1 stop14h 09m
British Airways
Tue 29/917:00
SDF
-
LHR
1 stop10h 00m
British Airways
Deal found 18/5£681
Tue 15/908:45
LHR
-
SDF
2 stops16h 47m
United Airlines
Tue 29/911:13
SDF
-
LHR
1 stop17h 07m
United Airlines
Deal found 18/5£683
Mon 9/1118:00
LHR
-
SDF
1 stop24h 02m
Lufthansa
Sun 15/1118:00
SDF
-
LHR
1 stop30h 55m
Lufthansa
Deal found 17/5£685
Mon 9/1106:40
LHR
-
SDF
2 stops20h 55m
Scandinavian Airlines
Sun 15/1115:24
SDF
-
LHR
2 stops21h 16m
Scandinavian Airlines
Deal found 17/5£690
Tue 16/614:45
LHR
-
SDF
1 stop12h 34m
British Airways
Tue 23/619:18
SDF
-
LHR
1 stop10h 12m
British Airways
Deal found 16/5£700
Tue 1/907:45
LHR
-
SDF
1 stop17h 23m
Lufthansa
Thu 17/910:05
SDF
-
LHR
1 stop15h 50m
Lufthansa
Deal found 14/5£701

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 18 May 2026.

Round-trip from

£676

One-way from

£447

Popular in

July

Cheapest in

September

Average price

£781
Lufthansa
  • Lufthansa
  • 16/9-23/9
  • 3 total stops
  • 33h 00m total
  • London to Louisville
Search Deals
17/6
  • 17/6
  • 3 total stops
  • 33h 25m total
  • London to Louisville
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 18 May 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 15/9

08:45-20:32

2 stops16h 47m

Louisville Intl

Tue 29/9

11:13-09:20

1 stop17h 07m

£683

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 1/9

06:30-16:52

2 stops15h 22m

Louisville Intl

Thu 17/9

13:00-10:40

1 stop16h 40m

£705
Fastest return journey

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 1/9

13:10-21:26

1 stop13h 16m

Louisville Intl

Thu 17/9

17:00-08:00

1 stop10h 00m

£710

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 16/9

06:30-18:43

2 stops17h 13m

Louisville Intl

Wed 23/9

14:15-08:50

2 stops13h 35m

£716

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 1/10

13:40-13:33

1 stop28h 53m

Louisville Intl

Sun 18/10

19:32-08:30

1 stop31h 58m

£725

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 23/10

07:05-00:02

3 stops21h 57m

Louisville Intl

Mon 2/11

15:24-16:00

2 stops19h 36m

£745

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Thu 1/10

06:30-17:41

2 stops16h 11m

Louisville Intl

Sun 18/10

10:43-07:10

2 stops15h 27m

£767

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 6/7

06:30-16:46

2 stops15h 16m

Louisville Intl

Sun 12/7

10:00-07:15

1 stop16h 15m

£773

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 23/10

09:15-15:58

1 stop11h 43m

Louisville Intl

Mon 2/11

12:43-08:35

1 stop14h 52m

£777

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Fri 23/10

06:30-15:45

2 stops14h 15m

Louisville Intl

Mon 2/11

12:53-06:25

1 stop12h 32m

£777

Flights are sorted by cheapest return flights first.

Deals found on 18/5

Showing 1-10 of 15 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

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

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Louisville, you should look to book at least 75 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 £523). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £931). 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 18 May 2026.
Read reviews from past customers who have flown with United Airlines,Virgin Atlantic, andAmerican 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.
United Airlines
7.4
Good
9,737 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,737 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,650 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Lufthansa
6.8
Okay
8,009 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
7,986 reviews
United Airlines
7.4
Good
9,737 reviews
Check prices

Boarding

7.7

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 13h 16m. The time it takes to get you to your destination can typically vary by up to 3h 31m. 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 £473. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £484 and £486, respectively. Users have found that KLM is 32% 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 £523). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £931). 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 18 May 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£473Average£997FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£484Average£678FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£486Average£566FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£498Average£684FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£514Average£722FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£599Average£811FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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