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Cheap flights from Louisville to London Heathrow Airport from £340

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or April, booked 64 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 25 March 2025.

Round-trip from

£521

One-way from

£340

Popular in

May

Cheapest in

February

Average price

£612
Air Canada
  • Air Canada
  • 12/7-5/12
  • 4 total stops
  • 48h 09m total
  • Louisville to London
7/7
  • 7/7
  • 2 total stops
  • 28h 23m total
  • Louisville to London
Highest demand for flights based on searches. 6% potential increase in price (£41 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in March 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 25 March 2025.

Sat 12/708:40SDF - LHR
2 stops16h 50mAir Canada
Fri 5/1214:30LHR - SDF
2 stops31h 19mAir Canada
Deal found 24/3£521
Sat 12/718:54SDF - LHR
1 stop12h 21mIberia
Fri 5/1214:10LHR - SDF
1 stop12h 03mIberia
Deal found 24/3£524
Tue 22/411:04SDF - LHR
2 stops17h 56mMultiple Airlines
Tue 29/409:30LHR - SDF
2 stops17h 32mMultiple Airlines
Deal found 23/3£530
Sun 20/414:40SDF - LHR
1 stop15h 30mDelta
Wed 30/411:45LHR - SDF
2 stops17h 14mDelta
Deal found 24/3£537
Tue 2/913:43SDF - LHR
2 stops19h 52mBritish Airways
Tue 16/906:10LHR - SDF
2 stops20h 00mBritish Airways
Deal found 24/3£537
Wed 2/406:45SDF - LHR
2 stops22h 15mUnited Airlines
Wed 9/409:30LHR - SDF
2 stops33h 33mUnited Airlines
Deal found 24/3£545
Sun 13/719:25SDF - LHR
1 stop12h 45mKLM
Fri 5/1214:20LHR - SDF
1 stop14h 37mKLM
Deal found 24/3£556
Sat 22/1119:17SDF - LHR
1 stop11h 13mAmerican Airlines
Sat 29/1113:10LHR - SDF
1 stop12h 45mAmerican Airlines
Deal found 24/3£633
Sat 22/1111:01SDF - LHR
2 stops18h 19mAer Lingus
Sat 29/1120:45LHR - SDF
2 stops27h 13mAer Lingus
Deal found 24/3£691
Sun 13/712:48SDF - LHR
1 stop12h 07mLufthansa
Fri 5/1209:30LHR - SDF
2 stops17h 44mLufthansa
Deal found 24/3£709
Mon 16/615:23SDF - LHR
1 stop14h 47mAir France
Mon 14/719:45LHR - SDF
2 stops30h 07mAir France
Deal found 24/3£1,018
Sun 15/615:23SDF - LHR
2 stops22h 07mScandinavian Airlines
Thu 26/621:05LHR - SDF
3 stops29h 09mScandinavian Airlines
Deal found 24/3£1,022

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 25 March 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

Sat 12/7

08:40-06:30

2 stops16h 50m

London Heathrow

Fri 5/12

14:30-16:49

2 stops31h 19m

£521

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 12/7

18:54-12:15

1 stop12h 21m

London Heathrow

Fri 5/12

14:10-21:13

1 stop12h 03m

£524

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 22/4

11:04-10:00

2 stops17h 56m

London Heathrow

Tue 29/4

09:30-22:02

2 stops17h 32m

£530

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 20/4

14:40-11:10

1 stop15h 30m

London Heathrow

Wed 30/4

11:45-23:59

2 stops17h 14m

£537

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 2/9

13:43-14:35

2 stops19h 52m

London Heathrow

Tue 16/9

06:10-21:10

2 stops20h 00m

£537

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 7/5

15:27-11:35

1 stop15h 08m

London Heathrow

Wed 14/5

10:50-22:30

2 stops16h 40m

£554

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 13/7

19:25-13:10

1 stop12h 45m

London Heathrow

Fri 5/12

14:20-23:57

1 stop14h 37m

£556

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 18/5

16:36-07:50

1 stop10h 14m

London Heathrow

Mon 26/5

09:15-16:47

1 stop12h 32m

£657

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 13/7

12:48-05:55

1 stop12h 07m

London Heathrow

Fri 5/12

09:30-22:14

2 stops17h 44m

£709

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 16/6

15:23-11:10

1 stop14h 47m

London Heathrow

Mon 14/7

19:45-20:52

2 stops30h 07m

£1,018

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 21 results
1
2
3

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 21 March 2025.

The best time to book flights from Louisville to London Heathrow Airport is 64 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 25 March 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 25 March 2025.
Get a feel of what it's like to fly with Delta, KLM and Air France from Louisville to London by reading reviews from past customers. 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.

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very Good

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Comfort

8.0

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 £521. Other airlines that can offer you cheap pricing are Iberia, from £524, and Delta, from £537. You may be able to fly from Louisville to London Heathrow Airport for 29% 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 Air Canada, which is currently one of the cheapest options available, starting at £359. Iberia flights start at £360 while deals on British Airways start at £363 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, 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
Hounslow
Deal
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Wembley
Northampton
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Hayes
Ilford
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Southend-on-Sea
Winchester
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Ipswich
Watford
Southall

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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£658Average£835FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
American AirlinesCheapest£758Average£868FlexibilityNo 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.

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