Cheap flights from Louisville to London Heathrow Airport from £214

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 17/11. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or September, booked 69 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap 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 16 September 2025.

Round-trip from

£418

One-way from

£214

Popular in

June

Cheapest in

February

Average price

£575
Delta
  • Delta
  • 13/10-22/10
  • 3 total stops
  • 34h 56m total
  • Louisville to London
17/11
  • 17/11
  • 3 total stops
  • 38h 57m total
  • Louisville to London
Highest demand for flights based on searches. 24% potential increase in price (£175 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Louisville to Heathrow

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 16 September 2025.

Mon 13/1010:30SDF - LHR
1 stop17h 25mDelta
Wed 22/1011:30LHR - SDF
2 stops17h 31mDelta
Deal found 15/9£418
Sun 21/919:33SDF - LHR
1 stop12h 57mDelta
Tue 30/909:55LHR - SDF
2 stops16h 18mDelta
Deal found 14/9£419
Wed 8/1014:33SDF - LHR
2 stops13h 42mDelta
Wed 29/1009:00LHR - SDF
2 stops19h 01mDelta
Deal found 13/9£421
Wed 8/1014:33SDF - LHR
2 stops13h 42mDelta
Tue 14/1006:30LHR - SDF
2 stops15h 54mDelta
Deal found 13/9£422
Mon 13/1018:05SDF - LHR
1 stop9h 50mKLM
Wed 22/1011:45LHR - SDF
1 stop14h 30mKLM
Deal found 15/9£424
Wed 8/1014:33SDF - LHR
2 stops13h 42mVirgin Atlantic
Tue 14/1013:05LHR - SDF
1 stop13h 43mVirgin Atlantic
Deal found 13/9£427
Mon 1/1215:09SDF - LHR
2 stops22h 21mScandinavian Airlines
Fri 5/1206:40LHR - SDF
2 stops22h 25mScandinavian Airlines
Deal found 15/9£444
Thu 13/1115:09SDF - LHR
2 stops21h 31mScandinavian Airlines
Wed 19/1119:30LHR - SDF
2 stops32h 18mScandinavian Airlines
Deal found 14/9£453
Thu 30/1012:39SDF - LHR
1 stop14h 26mVirgin Atlantic
Thu 6/1108:55LHR - SDF
1 stop13h 18mVirgin Atlantic
Deal found 15/9£465
Thu 30/1008:17SDF - LHR
1 stop18h 08mDelta
Thu 6/1111:30LHR - SDF
2 stops16h 04mDelta
Deal found 15/9£484
Sun 9/1112:37SDF - LHR
1 stop13h 28mVirgin Atlantic
Sun 16/1111:45LHR - SDF
2 stops14h 29mVirgin Atlantic
Deal found 14/9£485

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 16 September 2025.
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

Mon 13/10

18:05-08:55

1 stop9h 50m

London Heathrow

Wed 22/10

11:30-00:01

2 stops17h 31m

£418

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/10

14:33-09:15

2 stops13h 42m

London Heathrow

Wed 29/10

09:00-00:01

2 stops19h 01m

£421

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 11/11

18:16-11:40

1 stop12h 24m

London Heathrow

Wed 19/11

08:55-19:12

1 stop15h 17m

£424

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 13/10

20:15-13:30

1 stop12h 15m

London Heathrow

Wed 22/10

11:45-21:15

1 stop14h 30m

£424

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/10

14:33-08:50

2 stops13h 17m

London Heathrow

Wed 29/10

13:00-21:15

1 stop12h 15m

£427

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/10

14:33-09:15

2 stops13h 42m

London Heathrow

Tue 14/10

13:05-21:48

1 stop13h 43m

£427

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

15:09-18:30

2 stops22h 21m

London Heathrow

Fri 5/12

21:05-21:30

3 stops29h 25m

£450

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 12/2

17:45-17:40

2 stops18h 55m

London Heathrow

Wed 20/5

19:30-22:32

2 stops32h 02m

£465

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 13/2

14:59-09:00

1 stop13h 01m

London Heathrow

Wed 20/5

10:55-22:32

1 stop16h 37m

£478

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 12/2

14:59-06:25

1 stop10h 26m

London Heathrow

Wed 20/5

10:55-22:32

1 stop16h 37m

£478

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 20 results
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

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 12 September 2025.

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, January is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £112). Flying from Louisville to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

What is the cheapest time of day to fly from SDF to LHR?

Find hourly flight availability from Louisville to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 September 2025.

It’s typically best to fly out from Louisville to London Heathrow Airport at midday. Doing so could potentially save you 31% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost for a return flight from Louisville to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 16 September 2025.
Read reviews from past customers who have flown with Virgin Atlantic and American Airlines from Louisville to London Heathrow Airport. 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.

Crew

8.1

Entertainment

7.5

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Crew

8.1

Entertainment

7.5

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Crew

8.1

Entertainment

7.5

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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. 2 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 9h 50m. Fly via Delta or KLM 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.

  • What are the cheapest airlines flying from Louisville to London Heathrow Airport round-trip?

    Cheapflights users have booked flights from Louisville to London Heathrow Airport round-trip from £531. Another airline that can offer you cheap pricing is American Airlines. You may be able to fly from Louisville to London Heathrow Airport for 25% less than the average price by searching for these airlines.

  • 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, January is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £112). Flying from Louisville to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Hounslow
Slough
Gatwick
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Winchester
Chichester
Ipswich
Swindon
Dartford
Guildford
Brentford

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Louisville to Heathrow

Discover the top 2 airlines that operate flights from Louisville to Heathrow. 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 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£531Average£794FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£548Average£826FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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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