Find flights
When to book
Airlines
FAQs

Cheap flights from Louisville to London Heathrow Airport from £303

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or October, 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 7 November 2025.

Round-trip from

£450

One-way from

£303

Popular in

June

Cheapest in

February

Average price

£768
Delta
  • Delta
  • 2/12-9/12
  • 3 total stops
  • 31h 17m total
  • Louisville to London
Search Deals
Lufthansa
  • Lufthansa
  • 10/12
  • 1 total stop
  • 15h 45m total
  • Louisville to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£183 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£30 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 7 November 2025.

Sun 9/1118:16SDF - LHR
1 stop12h 24mVirgin Atlantic
Tue 25/1108:55LHR - SDF
1 stop15h 17mVirgin Atlantic
Deal found 5/11£435
Sun 9/1118:03SDF - LHR
1 stop9h 42mKLM
Tue 25/1106:30LHR - SDF
2 stops15h 46mKLM
Deal found 5/11£444
Sun 9/1118:03SDF - LHR
1 stop9h 42mDelta
Tue 25/1110:45LHR - SDF
1 stop13h 27mDelta
Deal found 5/11£448
Wed 5/1112:59SDF - LHR
1 stop12h 26mDelta
Wed 12/1106:20LHR - SDF
2 stops16h 03mDelta
Deal found 4/11£450
Tue 2/1215:18SDF - LHR
1 stop11h 32mKLM
Tue 9/1213:00LHR - SDF
1 stop13h 13mKLM
Deal found 6/11£455
Wed 5/1107:00SDF - LHR
1 stop19h 05mVirgin Atlantic
Wed 12/1108:55LHR - SDF
1 stop17h 36mVirgin Atlantic
Deal found 4/11£456
Sun 9/1107:00SDF - LHR
2 stops19h 10mMultiple Airlines
Tue 25/1111:10LHR - SDF
2 stops16h 19mMultiple Airlines
Deal found 5/11£463
Mon 1/1206:45SDF - LHR
2 stops32h 50mMultiple Airlines
Mon 15/1217:50LHR - SDF
2 stops33h 39mMultiple Airlines
Deal found 7/11£470
Thu 4/1213:50SDF - LHR
1 stop11h 05mUnited Airlines
Thu 11/1209:00LHR - SDF
2 stops33h 12mUnited Airlines
Deal found 6/11£471
Tue 18/1112:57SDF - LHR
1 stop12h 28mVirgin Atlantic
Sun 23/1113:00LHR - SDF
1 stop13h 14mVirgin Atlantic
Deal found 5/11£474

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 7 November 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

Tue 2/12

12:58-07:50

1 stop13h 52m

London Heathrow

Tue 9/12

06:20-18:45

2 stops17h 25m

£450

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 2/12

15:18-07:50

1 stop11h 32m

London Heathrow

Tue 9/12

13:00-21:13

1 stop13h 13m

£455

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

06:45-20:35

2 stops32h 50m

London Heathrow

Mon 15/12

17:50-22:29

2 stops33h 39m

£470

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 4/12

13:50-05:55

1 stop11h 05m

London Heathrow

Thu 11/12

09:00-13:12

2 stops33h 12m

£471

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 2/12

09:00-07:10

2 stops17h 10m

London Heathrow

Tue 9/12

06:50-17:16

2 stops15h 26m

£471

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 4/12

18:16-11:40

1 stop12h 24m

London Heathrow

Thu 11/12

08:55-23:59

1 stop20h 04m

£474

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 4/12

15:16-10:50

2 stops14h 34m

London Heathrow

Thu 11/12

08:55-23:59

1 stop20h 04m

£477

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/12

19:54-11:40

1 stop10h 46m

London Heathrow

Mon 15/12

10:45-18:52

1 stop13h 07m

£493

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 18/11

18:16-07:00

2 stops31h 44m

London Heathrow

Sun 23/11

06:20-23:00

2 stops21h 40m

£497

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 18/11

09:55-06:40

1 stop15h 45m

London Heathrow

Sun 23/11

06:50-17:16

2 stops15h 26m

£509

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 16 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 31 October 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, November is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of £403). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of £701). 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 7 November 2025.

It’s typically best to fly out from Louisville to London Heathrow Airport at midday. Doing so could potentially save you 30% on the flight price compared to flying in the morning, which is usually more expensive.

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 7 November 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.
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Overall

7.5

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Crew

8.1

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!
Virgin Atlantic
7.5
Good
672 reviews
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Overall

7.5

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Crew

8.1

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!
American Airlines
7.2
Good
11,042 reviews
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Overall

7.5

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Crew

8.1

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 11h 05m. Fly via Delta, KLM, or United Airlines 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 £551. Another airline that can offer you cheap pricing is American Airlines. You may be able to fly from Louisville to London Heathrow Airport for 26% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Louisville to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at £303. United Airlines flights start at £305 while deals on Air Canada start at £305 one-way.

  • 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 £403). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of £701). 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
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

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 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 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£551Average£825FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£569Average£857FlexibilityNo 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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.