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Cheap flights from London Heathrow Airport to Louisville from £377

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SDF
9 Mar — 16 Mar1
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 7 February 2026.

Wed 18/309:00
LHR
-
SDF
2 stops17h 13m
United Airlines
Wed 25/306:00
SDF
-
LHR
1 stop11h 20m
United Airlines
Deal found 3/2£584
Mon 20/410:50
LHR
-
SDF
2 stops16h 40m
Lufthansa
Mon 27/413:55
SDF
-
LHR
1 stop11h 50m
Lufthansa
Deal found 4/2£584
Wed 25/218:40
LHR
-
SDF
2 stops34h 18m
Scandinavian Airlines
Tue 10/313:56
SDF
-
LHR
2 stops24h 34m
Scandinavian Airlines
Deal found 4/2£591
Sat 12/910:45
LHR
-
SDF
1 stop11h 56m
Virgin Atlantic
Mon 14/919:30
SDF
-
LHR
1 stop10h 50m
Virgin Atlantic
Deal found 7/2£600
Wed 25/208:55
LHR
-
SDF
1 stop13h 06m
Virgin Atlantic
Tue 10/315:05
SDF
-
LHR
1 stop13h 55m
Virgin Atlantic
Deal found 4/2£603
Mon 4/510:20
LHR
-
SDF
2 stops18h 23m
Multiple Airlines
Fri 8/512:11
SDF
-
LHR
1 stop14h 49m
Multiple Airlines
Deal found 5/2£607
Wed 25/213:10
LHR
-
SDF
1 stop13h 03m
Finnair
Tue 10/305:00
SDF
-
LHR
2 stops13h 10m
Finnair
Deal found 4/2£612

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 7 February 2026.

Round-trip from

£584

One-way from

£377

Popular in

July

Cheapest in

January

Average price

£565
United Airlines
  • United Airlines
  • 18/3-25/3
  • 3 total stops
  • 28h 33m total
  • London to Louisville
Search Deals
10/3
  • 10/3
  • 3 total stops
  • 44h 36m total
  • London to Louisville
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£42 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 February 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 7 February 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 18/3

09:00-22:13

2 stops17h 13m

Louisville Intl

Wed 25/3

06:00-21:20

1 stop11h 20m

£584

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 20/4

10:50-22:30

2 stops16h 40m

Louisville Intl

Mon 27/4

13:55-06:45

1 stop11h 50m

£584

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 25/2

18:40-23:58

2 stops34h 18m

Louisville Intl

Tue 10/3

13:56-18:30

2 stops24h 34m

£591

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Wed 25/2

08:55-17:01

1 stop13h 06m

Louisville Intl

Tue 10/3

15:05-09:00

1 stop13h 55m

£603

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 14/3

20:35-11:14

2 stops42h 39m

£414

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 23/5

07:40-13:27

3 stops34h 47m

£435

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 9/3

14:50-23:09

2 stops36h 19m

£445

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Tue 10/3

12:10-23:20

2 stops15h 10m

£470

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Mon 9/3

15:10-23:59

1 stop12h 49m

£505

LondonLouisville

LHR - SDF

LHRSDF

London Heathrow

Sat 20/6

07:30-22:09

2 stops19h 39m

£515

Flights are sorted by cheapest return flights first.

Deals found on 4/2

Showing 1-10 of 11 results
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?

Use this chart to determine the optimal time to book a return flight from Heathrow to Louisville. Price data was last updated on 30 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 £364). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £492). 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 7 February 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
7.6
Good
1,357 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights
Finnair
7.6
Good
1,357 reviews
Finnair
7.6
Good
1,357 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

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
678 reviews
Finnair
7.6
Good
1,357 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

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
9,245 reviews
Finnair
7.6
Good
1,357 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

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
7,769 reviews
Finnair
7.6
Good
1,357 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

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
7,719 reviews
Finnair
7.6
Good
1,357 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

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 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 United Airlines and Lufthansa fly from London Heathrow Airport to Louisville in about 16h 40m. The time it takes to get you to your destination can typically vary by up to 33m. 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 Air France is currently your cheapest option to Louisville, with prices starting at £455. Additional return tickets that might be worth considering are offered by KLM and United Airlines, with the lowest prices starting at £462 and £475, respectively. Users have found that Air France is 23% 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 £364). Flying from London Heathrow Airport to Louisville in July is currently the most expensive (average of £492). 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 7 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£416Average£729FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£462Average£586FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£469Average£589FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£470Average£635FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£475Average£603FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£477Average£560FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£488Average£616FlexibilityNo cancel feeOn-time70%
Search British Airways 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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