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 $710. Other airlines that can offer you cheap pricing are Air Canada, from $715, and Delta, from $717. You may be able to fly from Louisville to London Heathrow Airport for 25% 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?

$461 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on KLM and Air Canada, with prices starting from $529 and $545, respectively.

What are the most popular airlines that fly from Louisville to London Heathrow Airport?

Consider American Airlines, British Airways or Delta when booking your flight. These represent the most popular airlines when flying from Louisville to London Heathrow Airport.

What is the cheapest day to fly round-trip from Louisville to London Heathrow Airport?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest month to fly from Louisville to London Heathrow Airport?

October can be a great time to fly to London Heathrow Airport from Louisville with a flight ticket averaging about $983. Cheapflights users have found deals in the month of October for as cheap as $597. The most expensive prices can be found in the month of December.

Most accurate provider : When it comes to deals on Louisville-London Heathrow Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Louisville-London Heathrow Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Louisville-London Heathrow Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Louisville-London Heathrow Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from Louisville to London Heathrow?

If you book a flight to London Heathrow from Louisville, you will be flying from Louisville Intl, which is the city’s only airport. Louisville Intl (SDF) is located 5.3 mi from the center of Louisville. There are 0 flights from Louisville Intl to London Heathrow per day from 5 different 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 vacation 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.

$461+ Flights from Louisville to London Heathrow Airport

Q: How far in advance should I book a flight from Louisville to London Heathrow Airport?

To save up to 89% on this flight, we recommend booking at least 14 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Louisville to London Heathrow Airport from $632 1-2 weeks out and tickets from $1,196 for flights departing within the next 72 hours.

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Find cheap flights from Louisville to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or March, booked 64 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Louisville to Heathrow

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$710 (KLM)
One-way from	$461 (United Airlines)
Popular in	May
Cheapest in	February
Average price	$793

Provider with most accurate pricing for Louisville Intl-London Heathrow flight deals.

Search Deals

Provider most trusted by Cheapflights users for Louisville Intl-London Heathrow flights.

Search Deals

From Louisville Intl to London Heathrow

Search Deals

One-way flight from Louisville Intl to London Heathrow

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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 April 17, 2025.

Tue 9/27:25 pmSDF - LHR

1 stop12h 45mKLM

Thu 9/111:05 pmLHR - SDF

1 stop12h 46mKLM

Deal found 4/15

$710

Fri 9/512:45 pmSDF - LHR

2 stops51h 15mAir Canada

Wed 9/172:05 pmLHR - SDF

2 stops24h 57mAir Canada

Deal found 4/15

$715

Tue 5/612:55 pmSDF - LHR

1 stop13h 20mDelta

Thu 5/226:30 amLHR - SDF

2 stops16h 59mDelta

Deal found 4/16

$717

Tue 9/22:35 pmSDF - LHR

1 stop16h 55mMultiple Airlines

Thu 9/111:30 pmLHR - SDF

1 stop12h 27mMultiple Airlines

Deal found 4/16

$723

Thu 5/111:00 amSDF - LHR

1 stop14h 20mUnited Airlines

Thu 5/88:30 amLHR - SDF

2 stops16h 55mUnited Airlines

Deal found 4/15

$748

Sun 8/312:40 pmSDF - LHR

1 stop13h 35mVirgin Atlantic

Sat 8/236:30 amLHR - SDF

2 stops15h 21mVirgin Atlantic

Deal found 4/16

$767

Wed 6/253:24 pmSDF - LHR

2 stops21h 16mScandinavian Airlines

Wed 8/137:30 pmLHR - SDF

2 stops32h 02mScandinavian Airlines

Deal found 4/16

$870

Sun 4/204:42 pmSDF - LHR

1 stop10h 08mAmerican Airlines

Wed 4/309:15 amLHR - SDF

1 stop12h 29mAmerican Airlines

Deal found 4/16

$935

Sun 4/2010:25 amSDF - LHR

1 stop15h 55mBritish Airways

Sun 5/41:10 pmLHR - SDF

1 stop11h 35mBritish Airways

Deal found 4/17

$971

Wed 6/116:42 pmSDF - LHR

1 stop10h 48mIberia

Mon 6/162:25 pmLHR - SDF

1 stop13h 34mIberia

Deal found 4/16

$1,029

Best flights from Louisville to Heathrow
Discover carefully curated flight deals from Louisville to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2025.

Tue 9/27:25 pmSDF - LHR

1 stop12h 45mKLM

Thu 9/111:05 pmLHR - SDF

1 stop12h 46mKLM

Deal found 4/15

$710

Fri 9/512:45 pmSDF - LHR

2 stops51h 15mAir Canada

Wed 9/172:05 pmLHR - SDF

2 stops24h 57mAir Canada

Deal found 4/15

$715

Tue 5/612:55 pmSDF - LHR

1 stop13h 20mDelta

Thu 5/226:30 amLHR - SDF

2 stops16h 59mDelta

Deal found 4/16

$717

Tue 9/22:35 pmSDF - LHR

1 stop16h 55mMultiple Airlines

Thu 9/111:30 pmLHR - SDF

1 stop12h 27mMultiple Airlines

Deal found 4/16

$723

Thu 5/111:00 amSDF - LHR

1 stop14h 20mUnited Airlines

Thu 5/88:30 amLHR - SDF

2 stops16h 55mUnited Airlines

Deal found 4/15

$748

Sun 8/312:40 pmSDF - LHR

1 stop13h 35mVirgin Atlantic

Sat 8/236:30 amLHR - SDF

2 stops15h 21mVirgin Atlantic

Deal found 4/16

$767

Wed 6/253:24 pmSDF - LHR

2 stops21h 16mScandinavian Airlines

Wed 8/137:30 pmLHR - SDF

2 stops32h 02mScandinavian Airlines

Deal found 4/16

$870

Wed 6/116:42 pmSDF - LHR

1 stop10h 48mBritish Airways

Mon 6/167:30 pmLHR - SDF

2 stops32h 17mBritish Airways

Deal found 4/16

$996

Wed 6/116:42 pmSDF - LHR

1 stop10h 48mIberia

Mon 6/162:25 pmLHR - SDF

1 stop13h 34mIberia

Deal found 4/16

$1,029

Sun 6/156:04 pmSDF - LHR

1 stop13h 26mAmerican Airlines

Thu 6/269:15 amLHR - SDF

1 stop15h 30mAmerican Airlines

Deal found 4/16

$1,075

Last-minute flights from Louisville to Heathrow
Discover last-minute flight deals from Louisville to Heathrow. Data last updated April 17, 2025 and is based on user searches.

Sat 4/1911:50 amSDF - LHR

2 stops15h 10mAer Lingus

Mon 4/218:50 amLHR - SDF

2 stops19h 10mAer Lingus

Deal found 4/15

$1,372

Sun 4/204:42 pmSDF - LHR

1 stop10h 08mAmerican Airlines

Wed 4/309:15 amLHR - SDF

1 stop12h 29mAmerican Airlines

Deal found 4/16

$935

Sun 4/202:40 pmSDF - LHR

2 stops22h 00mScandinavian Airlines

Sun 5/46:40 pmLHR - SDF

2 stops32h 08mScandinavian Airlines

Deal found 4/17

$965

Sun 4/2010:25 amSDF - LHR

1 stop15h 55mBritish Airways

Sun 5/41:10 pmLHR - SDF

1 stop11h 35mBritish Airways

Deal found 4/17

$971

Tue 4/226:00 pmSDF - LHR

1 stop9h 55mAir France

Mon 4/283:15 pmLHR - SDF

1 stop12h 34mAir France

Deal found 4/16

$9,621

Wed 4/236:00 pmSDF - LHR

1 stop9h 55mKLM

Sun 4/271:05 pmLHR - SDF

1 stop14h 44mKLM

Deal found 4/16

$3,521

Wed 4/238:56 amSDF - LHR

1 stop17h 24mBritish Airways

Sun 4/2711:05 amLHR - SDF

1 stop14h 22mBritish Airways

Deal found 4/16

$3,549

Wed 4/238:56 amSDF - LHR

1 stop17h 24mMultiple Airlines

Fri 5/21:40 pmLHR - SDF

1 stop15h 05mMultiple Airlines

Deal found 4/16

$4,701

Wed 4/232:37 pmSDF - LHR

2 stops13h 13mVirgin Atlantic

Wed 4/309:40 amLHR - SDF

2 stops16h 54mVirgin Atlantic

Deal found 4/16

$5,451

Wed 4/232:06 pmSDF - LHR

1 stop15h 34mLufthansa

Fri 4/2511:05 amLHR - SDF

1 stop16h 25mLufthansa

Deal found 4/16

$8,042

Wed 4/2311:04 amSDF - LHR

2 stops16h 31mUnited Airlines

Fri 4/257:00 amLHR - SDF

2 stops17h 47mUnited Airlines

Deal found 4/16

$10,358

Wed 4/231:44 pmSDF - LHR

1 stop14h 16mFinnair

Mon 4/2810:30 amLHR - SDF

1 stop14h 14mFinnair

Deal found 4/16

$12,587

One-way flights from Louisville to Heathrow
Search for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated April 17, 2025.

Sat 8/232:20 pmSDF - LHR

2 stops35h 10mUnited Airlines

Deal found 4/16

$461

Mon 6/167:45 pmSDF - LHR

2 stops33h 35mMultiple Airlines

Deal found 4/16

$501

Wed 5/148:00 pmSDF - LHR

1 stop12h 30mKLM

Deal found 4/16

$529

Sat 8/238:45 amSDF - LHR

3 stops16h 45mAir Canada

Deal found 4/16

$545

Wed 6/44:36 pmSDF - LHR

1 stop10h 14mAmerican Airlines

Deal found 4/16

$728

Wed 6/411:51 amSDF - LHR

2 stops14h 59mBritish Airways

Deal found 4/16

$734

Cheapflights Fare Finder

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

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/2

7:25 pm-1:10 pm

1 stop12h 45m

London Heathrow

Thu 9/11

1:05 pm-8:51 pm

1 stop12h 46m

$710

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/5

12:45 pm-9:00 pm

2 stops51h 15m

London Heathrow

Wed 9/17

2:05 pm-10:02 am

2 stops24h 57m

$715

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 5/6

12:55 pm-7:15 am

1 stop13h 20m

London Heathrow

Thu 5/22

6:30 am-6:29 pm

2 stops16h 59m

$717

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/2

2:35 pm-12:30 pm

1 stop16h 55m

London Heathrow

Thu 9/11

1:30 pm-8:57 pm

1 stop12h 27m

$723

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 5/1

11:00 am-6:20 am

1 stop14h 20m

London Heathrow

Thu 5/8

8:30 am-8:25 pm

2 stops16h 55m

$748

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 8/3

12:40 pm-7:15 am

1 stop13h 35m

London Heathrow

Sat 8/23

6:30 am-4:51 pm

2 stops15h 21m

$767

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 6/25

3:24 pm-5:40 pm

2 stops21h 16m

London Heathrow

Wed 8/13

7:30 pm-10:32 pm

2 stops32h 02m

$870

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 6/11

6:42 pm-10:30 am

1 stop10h 48m

London Heathrow

Mon 6/16

7:30 pm-10:47 pm

2 stops32h 17m

$996

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 6/11

6:42 pm-10:30 am

1 stop10h 48m

London Heathrow

Mon 6/16

2:25 pm-10:59 pm

1 stop13h 34m

$1,029

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 6/15

6:04 pm-12:30 pm

1 stop13h 26m

London Heathrow

Thu 6/26

9:15 am-7:45 pm

1 stop15h 30m

$1,075

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 17 results

Compare providers for flights from Louisville to Heathrow

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Heathrow in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Louisville-London Heathrow Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Louisville-London Heathrow Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Louisville-London Heathrow Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Louisville-London Heathrow Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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?

To ensure you get the cheapest price possible for a flight from Louisville to London Heathrow Airport, you should look to book at least 64 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $661). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $1,110). 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?

A simple way to save on the total cost of your ticket is to fly from Louisville to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Louisville to London Heathrow Airport?

Travelers seeking maximum savings on their Louisville to London Heathrow Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Peruse reviews from past customers who have flown with Delta, KLM and United Airlines from Louisville to London to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,916 reviews

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.

Delta

8.0

Very good

7,916 reviews

Delta

8.0

Very good

7,916 reviews

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.

KLM

7.8

Good

1,327 reviews

Delta

8.0

Very good

7,916 reviews

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.

United Airlines

7.4

Good

8,667 reviews

Delta

8.0

Very good

7,916 reviews

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.

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very good

7,916 reviews

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.

Scandinavian Airlines

7.3

Good

1,335 reviews

Delta

8.0

Very good

7,916 reviews

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

What airport do you fly from for flights from Louisville to London Heathrow?
If you book a flight to London Heathrow from Louisville, you will be flying from Louisville Intl, which is the city’s only airport. Louisville Intl (SDF) is located 5.3 mi from the center of Louisville. There are 0 flights from Louisville Intl to London Heathrow per day from 5 different airlines.
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 $710. Other airlines that can offer you cheap pricing are Air Canada, from $715, and Delta, from $717. You may be able to fly from Louisville to London Heathrow Airport for 25% 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?
$461 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on KLM and Air Canada, with prices starting from $529 and $545, respectively.
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 vacation 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 $661). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $1,110). 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

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Top 5 airlines flying from Louisville to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$704	Average$1,038	FlexibilityNo cancel fee	On-time70%
American Airlines	Cheapest$728	Average$952	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$728	Average$1,015	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$734	Average$996	FlexibilityNo cancel fee	On-time69%
Virgin Atlantic	Cheapest$777	Average$1,242	FlexibilityNo cancel fee	On-time72%

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$461+ Cheap flights from Louisville (SDF) to Heathrow (LHR)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Louisville to Heathrow with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or March, booked 64 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Louisville to Heathrow

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Louisville to Heathrow

Cheapest flights from Louisville to HeathrowExplore 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 April 17, 2025.

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 April 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Compare providers for flights from Louisville to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to Heathrow in April.

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.

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 round-trip flight from Louisville to Heathrow. Price data was last updated on April 11, 2025.

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

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 April 17, 2025.

What is the cheapest day to fly from Louisville to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Louisville to Heathrow. Price data was last updated on December 16, 2024.

Rainfall in Heathrow by month

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

Temperature in Heathrow by month

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

Reviews of airlines servicing Heathrow

Peruse reviews from past customers who have flown with Delta, KLM and United Airlines from Louisville to London to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

How can I find direct flights from Louisville to Heathrow?

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

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

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Top 5 airlines flying from Louisville to Heathrow

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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 April 17, 2025.