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Heathrow

$330+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
Jun 8 — Jun 151
Mon 6/8
Mon 6/15
1 adult, Economy
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Cheap 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 May 9, 2026.

This United Airlines deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:37 pm
SDF
-
LHR
1 stop13h 43m
United Airlines
Thu 10/16:50 am
LHR
-
SDF
2 stops14h 59m
United Airlines
Deal found 5/6$838
This Cheapflightsfares deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:56 pm
SDF
-
LHR
2 stops19h 44m
Lufthansa
Thu 10/18:30 am
LHR
-
SDF
2 stops20h 35m
Lufthansa
Deal found 5/4$852
This Iberia deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:31 am
SDF
-
LHR
1 stop16h 09m
Iberia
Tue 9/226:15 am
LHR
-
SDF
2 stops21h 43m
Iberia
Deal found 5/4$867
This FlightHub deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:24 pm
SDF
-
LHR
2 stops21h 16m
Scandinavian Airlines
Sun 11/86:40 am
LHR
-
SDF
2 stops20h 55m
Scandinavian Airlines
Deal found 5/8$877
This Scandinavian Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:24 pm
SDF
-
LHR
2 stops22h 06m
Scandinavian Airlines
Wed 11/116:40 am
LHR
-
SDF
2 stops22h 22m
Scandinavian Airlines
Deal found 5/8$883
This FlightHub deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:07 pm
SDF
-
LHR
1 stop10h 43m
British Airways
Tue 9/227:50 am
LHR
-
SDF
2 stops21h 17m
British Airways
Deal found 5/5$888
This Justfly.com deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:08 pm
SDF
-
LHR
1 stop11h 27m
Multiple Airlines
Wed 9/97:30 pm
LHR
-
SDF
2 stops32h 28m
Multiple Airlines
Deal found 5/7$892

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 May 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$838
(United Airlines)

One-way from

$330
(oojo)

Popular in

June

Cheapest in

February

Average price

$1,172
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. 23% potential increase in price ($276 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated May 9, 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 round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/29

1:55 pm-9:00 am

1 stop14h 05m

London Heathrow

Thu 10/1

2:10 pm-10:09 pm

1 stop12h 59m

$998

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 9/20

6:15 am-9:20 pm

1 stop10h 05m

London Heathrow

Sat 10/3

9:30 am-7:09 pm

2 stops14h 39m

$1,049

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 5/19

3:30 pm-11:35 am

1 stop15h 05m

London Heathrow

Thu 5/28

2:05 pm-1:35 pm

2 stops28h 30m

$1,077

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 8/7

10:34 am-6:45 am

2 stops15h 11m

London Heathrow

Thu 8/13

8:20 am-7:30 pm

2 stops16h 10m

$1,104

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 7/27

11:44 am-7:15 am

1 stop14h 31m

London Heathrow

Sun 8/2

8:00 am-11:59 pm

1 stop20h 59m

$1,151

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 5/20

6:17 am-6:30 am

2 stops19h 13m

London Heathrow

Sun 6/7

8:00 am-8:23 pm

1 stop17h 23m

$1,160

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 7/5

1:05 pm-5:55 am

1 stop11h 50m

London Heathrow

Sun 7/19

8:00 am-11:59 pm

1 stop20h 59m

$1,197
Quickest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 7/18

6:30 am-9:25 pm

1 stop9h 55m

London Heathrow

Sat 7/25

11:05 am-8:23 pm

1 stop14h 18m

$1,201

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 7/27

11:17 am-7:10 am

2 stops14h 53m

London Heathrow

Sun 8/2

4:20 pm-12:12 pm

1 stop24h 52m

$1,202

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 7/11

7:55 pm-6:45 am

1 stop29h 50m

London Heathrow

Sun 7/19

8:00 am-5:03 pm

1 stop14h 03m

$1,203

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Louisville-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 68 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, February is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of $619). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $1,298). 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 to fly round-trip 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 May 9, 2026.
See what other customers who have flown with Delta,United Airlines, andVirgin Atlantic from Louisville to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,457 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,457 reviews
Delta
7.9
Good
8,457 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,692 reviews
Delta
7.9
Good
8,457 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Virgin Atlantic
7.4
Good
688 reviews
Delta
7.9
Good
8,457 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,668 reviews
Delta
7.9
Good
8,457 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
British Airways
6.7
Okay
7,954 reviews
Delta
7.9
Good
8,457 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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?

    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.

  • How long is the flight from Louisville to London Heathrow Airport?

    United Airlines and Virgin Atlantic can get you from Louisville to London Heathrow Airport in just under 14h 05m. Your travel time can differ by up to 1h 06m. Louisville and London Heathrow Airport are separated by a distance of 4033 mi. Both multi-stop and nonstop 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 $577. Other airlines that can offer you cheap pricing are Delta, from $588, and British Airways, from $589. You may be able to fly from Louisville to London Heathrow Airport for 37% 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 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, February is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of $619). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $1,298). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Louisville to Heathrow

Discover the top 5 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 2,558,603 searches. Data last updated May 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$577Average$799FlexibilityNo cancel feeOn-time72%
DeltaCheapest$588Average$859FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$589Average$948FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$676Average$1,107FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$678Average$975FlexibilityNo cancel feeOn-time69%

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