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Cheap flights from Louisville to London Heathrow Airport from £243

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
1 Aug — 8 Aug1
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 2 July 2026.

Sun 8/1110:26
SDF
-
LHR
1 stop17h 09m
Iberia
Wed 18/1106:15
LHR
-
SDF
2 stops20h 20m
Iberia
Deal found 30/6£647
Sun 15/1112:43
SDF
-
LHR
1 stop16h 42m
Iberia
Wed 18/1107:35
LHR
-
SDF
2 stops18h 54m
Iberia
Deal found 27/6£651
Tue 22/914:47
SDF
-
LHR
1 stop11h 03m
British Airways
Wed 30/907:50
LHR
-
SDF
2 stops20h 32m
British Airways
Deal found 28/6£662
Tue 22/915:35
SDF
-
LHR
1 stop15h 00m
United Airlines
Thu 1/1006:50
LHR
-
SDF
2 stops15h 50m
United Airlines
Deal found 29/6£665
Mon 21/910:29
SDF
-
LHR
1 stop16h 11m
British Airways
Fri 2/1016:25
LHR
-
SDF
1 stop23h 21m
British Airways
Deal found 28/6£669
Tue 22/910:23
SDF
-
LHR
2 stops15h 07m
Air Canada
Wed 30/912:40
LHR
-
SDF
2 stops40h 09m
Air Canada
Deal found 28/6£672
Sun 15/1118:24
SDF
-
LHR
1 stop12h 36m
British Airways
Wed 18/1114:10
LHR
-
SDF
1 stop12h 19m
British Airways
Deal found 27/6£673
Tue 22/910:45
SDF
-
LHR
2 stops14h 45m
Multiple Airlines
Wed 30/911:30
LHR
-
SDF
2 stops17h 29m
Multiple Airlines
Deal found 28/6£676
Tue 22/914:47
SDF
-
LHR
2 stops14h 48m
Iberia
Thu 1/1014:25
LHR
-
SDF
1 stop13h 08m
Iberia
Deal found 1/7£678
Sun 15/1110:25
SDF
-
LHR
2 stops15h 45m
Multiple Airlines
Wed 18/1111:10
LHR
-
SDF
2 stops16h 20m
Multiple Airlines
Deal found 27/6£683
Mon 21/911:00
SDF
-
LHR
1 stop14h 45m
United Airlines
Fri 2/1009:30
LHR
-
SDF
2 stops14h 41m
United Airlines
Deal found 30/6£689

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 2 July 2026.

Round-trip from

£647

One-way from

£243

Popular in

June

Cheapest in

February

Average price

£890
Iberia
  • Iberia
  • 8/11-18/11
  • 3 total stops
  • 37h 29m total
  • Louisville to London
Search Deals
British Airways
  • British Airways
  • 18/11
  • 1 total stop
  • 10h 42m total
  • Louisville to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£173 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 2 July 2026.
Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 17/8

18:30-12:15

1 stop12h 45m

London Heathrow

Tue 25/8

12:15-21:25

1 stop14h 10m

£721

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 18/8

10:43-05:55

1 stop14h 12m

London Heathrow

Fri 28/8

06:50-19:07

2 stops17h 17m

£725

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 29/7

08:10-07:15

1 stop18h 05m

London Heathrow

Wed 5/8

09:55-21:33

2 stops16h 38m

£802

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 29/7

16:47-11:20

1 stop13h 33m

London Heathrow

Tue 11/8

08:40-21:19

2 stops17h 39m

£802

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 5/8

13:06-08:20

1 stop14h 14m

London Heathrow

Sun 16/8

09:30-19:07

2 stops14h 37m

£830

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 27/7

13:08-07:15

1 stop13h 07m

London Heathrow

Sun 2/8

07:45-22:54

1 stop20h 09m

£864

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 27/7

19:49-13:05

1 stop12h 16m

London Heathrow

Sun 2/8

18:55-12:12

1 stop22h 17m

£901
Cheapest one-way
Fastest single journey

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 18/11

15:38-07:20

1 stop10h 42m

£243

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 18/11

06:20-07:10

2 stops19h 50m

£262

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 18/11

05:50-07:10

3 stops20h 20m

£265

Flights are sorted by cheapest return flights first.

Deals found on 28/6

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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

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

Currently, February is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £475). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of £1,014). 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 Louisville to London Heathrow Airport?

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 12h 45m. Fly via British Airways, United Airlines, or Delta 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, February is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £475). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of £1,014). 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
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Swindon
Eastbourne
Poole
Southall
Aylesbury
Romford

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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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