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Cheap flights from Louisville to London Heathrow Airport from £160

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
6 Mar — 13 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Louisville to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Louisville to Heathrow
Explore the most affordable flight options available from Louisville to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 February 2026.

Wed 11/313:58
SDF
-
LHR
1 stop11h 57m
United Airlines
Tue 17/306:50
LHR
-
SDF
2 stops19h 23m
United Airlines
Deal found 3/2£463
Tue 3/310:49
SDF
-
LHR
1 stop18h 11m
British Airways
Wed 18/307:35
LHR
-
SDF
2 stops19h 05m
British Airways
Deal found 2/2£463
Tue 3/313:50
SDF
-
LHR
1 stop13h 35m
United Airlines
Tue 10/306:35
LHR
-
SDF
2 stops17h 39m
United Airlines
Deal found 2/2£464
Mon 11/514:31
SDF
-
LHR
1 stop11h 39m
KLM
Wed 20/506:30
LHR
-
SDF
2 stops17h 40m
KLM
Deal found 3/2£468
Wed 18/308:15
SDF
-
LHR
2 stops32h 20m
Air Canada
Mon 23/313:25
LHR
-
SDF
2 stops36h 48m
Air Canada
Deal found 2/2£471
Thu 19/306:00
SDF
-
LHR
2 stops21h 10m
Air Canada
Mon 23/313:25
LHR
-
SDF
2 stops34h 49m
Air Canada
Deal found 3/2£471
Wed 8/411:13
SDF
-
LHR
1 stop18h 17m
British Airways
Mon 13/419:25
LHR
-
SDF
2 stops31h 03m
British Airways
Deal found 3/2£473
Sat 2/518:07
SDF
-
LHR
1 stop32h 03m
Air France
Wed 13/511:30
LHR
-
SDF
2 stops17h 22m
Air France
Deal found 3/2£473
Mon 4/519:20
SDF
-
LHR
1 stop11h 25m
United Airlines
Wed 13/506:50
LHR
-
SDF
2 stops17h 52m
United Airlines
Deal found 3/2£474
Mon 11/505:50
SDF
-
LHR
2 stops19h 40m
United Airlines
Wed 20/507:25
LHR
-
SDF
2 stops16h 11m
United Airlines
Deal found 3/2£475
Thu 5/308:15
SDF
-
LHR
2 stops17h 55m
Air Canada
Sun 15/318:00
LHR
-
SDF
2 stops30h 14m
Air Canada
Deal found 2/2£476

Find flight deals from Louisville to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Heathrow (LHR). 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 4 February 2026.

Round-trip from

£463

One-way from

£160

Popular in

June

Cheapest in

February

Average price

£460
United Airlines
  • United Airlines
  • 11/3-17/3
  • 3 total stops
  • 31h 20m total
  • Louisville to London
Search Deals
British Airways
  • British Airways
  • 19/7
  • 1 total stop
  • 14h 00m total
  • Louisville to London
Search Deals
Highest demand for flights based on searches. 30% potential increase in price (£206 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£32 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 Louisville to Heathrow 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 4 February 2026.
Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Fly from

Louisville

Fly to

Heathrow

Route

Depart

Return

Price

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 11/3

13:58-05:55

1 stop11h 57m

London Heathrow

Tue 17/3

06:50-22:13

2 stops19h 23m

£463

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 13/3

06:00-20:35

1 stop10h 35m

London Heathrow

Mon 16/3

06:50-20:14

2 stops17h 24m

£463

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 3/3

10:45-07:10

2 stops15h 25m

London Heathrow

Tue 10/3

06:50-19:31

2 stops16h 41m

£466

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 19/3

06:00-07:10

2 stops21h 10m

London Heathrow

Mon 23/3

13:25-20:14

2 stops34h 49m

£471

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 4/5

05:54-06:55

1 stop20h 01m

London Heathrow

Fri 15/5

06:50-17:01

2 stops15h 11m

£474

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 11/5

05:50-06:30

2 stops19h 40m

London Heathrow

Wed 20/5

07:25-18:36

2 stops16h 11m

£475

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 19/3

14:35-06:40

1 stop12h 05m

London Heathrow

Mon 23/3

15:10-23:59

1 stop12h 49m

£484

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 14/3

14:35-06:40

1 stop12h 05m

London Heathrow

Sat 21/3

09:10-19:31

1 stop14h 21m

£484

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 18/3

14:35-06:40

1 stop12h 05m

London Heathrow

Mon 23/3

15:10-23:59

1 stop12h 49m

£485

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 19/7

17:50-12:50

1 stop14h 00m

£160

Flights are sorted by cheapest return flights first.

Deals found on 1/2

Showing 1-10 of 17 results
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Best time to book a flight from Louisville to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Louisville 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 Louisville to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Louisville to Heathrow. Price data was last updated on 30 January 2026.

The best time to book flights from Louisville to London Heathrow Airport is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Louisville to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £378). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of £671). 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.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Heathrow. 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 from for flights from Louisville to London Heathrow?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly out of when you book flights from Louisville to London Heathrow. 0 airlines have flights from Louisville Intl to London Heathrow on a regular basis. Booking flights from Louisville Intl to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • How long is the flight from Louisville to London Heathrow Airport?

    There are many flights that can get you from Louisville to London Heathrow Airport in 11h 57m. Fly via United Airlines or Air Canada to get the fastest option. The distance between Louisville and London Heathrow Airport is about 4033 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Louisville to Heathrow that include hotel bookings?

    Yes. In addition to deals on Louisville to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Heathrow.

  • Can I find deals for business class flights from Louisville to Heathrow?

    Yes. Cheapflights offers flight deals from Louisville to Heathrow 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 Louisville to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £378). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of £671). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Luton
Northampton
Wembley
Gatwick
Slough
Ilford
Hounslow
Brentford
Hayes
Colchester
Watford
Guildford
Swindon
Bedford
Chelmsford
Eastbourne
Crawley
Kingston upon Thames

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How does Cheapflights help users find flights from Louisville to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Louisville to Heathrow. 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 Louisville to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Louisville.

Can Cheapflights find flights from Louisville to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Louisville to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Louisville to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Louisville to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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