$323+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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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
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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 June 18, 2026.
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 June 18, 2026.
This FlightHub deal was found by Cheapflights users on 6/15. 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 10/145:00 pm
SDF
- LHR
1 stop10h 00m
British Airways
Wed 10/216:15 am
LHR
- SDF
2 stops20h 23m
British Airways
Deal found 6/15![British Airways logo]()
$886
This oojo deal was found by Cheapflights users on 6/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2112:38 pm
SDF
- LHR
1 stop13h 17m
British Airways
Fri 10/29:15 am
LHR
- SDF
1 stop12h 59m
British Airways
Deal found 6/14![British Airways logo]()
$891
This oojo deal was found by Cheapflights users on 6/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:53 pm
SDF
- LHR
1 stop11h 02m
British Airways
Wed 9/233:00 pm
LHR
- SDF
1 stop13h 22m
British Airways
Deal found 6/14![British Airways logo]()
$893
This Iberia deal was found by Cheapflights users on 6/15. 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.
Mon 9/1410:29 am
SDF
- LHR
1 stop19h 21m
Iberia
Wed 9/236:15 am
LHR
- SDF
2 stops21h 18m
Iberia
Deal found 6/15![Iberia logo]()
$895
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:10 am
SDF
- LHR
1 stop17h 15m
Delta
Fri 10/26:30 am
LHR
- SDF
2 stops15h 41m
Delta
Deal found 6/16![Delta logo]()
$904
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 10/1410:25 am
SDF
- LHR
2 stops15h 05m
United Airlines
Wed 10/217:25 am
LHR
- SDF
2 stops18h 06m
United Airlines
Deal found 6/15![United Airlines logo]()
$907
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:42 pm
SDF
- LHR
2 stops14h 38m
Delta
Wed 9/239:55 am
LHR
- SDF
2 stops16h 17m
Delta
Deal found 6/15![Delta logo]()
$908
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Mon 10/1910:25 am
SDF
- LHR
2 stops15h 30m
United Airlines
Fri 10/236:50 am
LHR
- SDF
2 stops17h 34m
United Airlines
Deal found 6/16![United Airlines logo]()
$909
This Expedia deal was found by Cheapflights users on 6/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:59 pm
SDF
- LHR
1 stop13h 16m
Iberia
Tue 10/66:15 am
LHR
- SDF
2 stops21h 40m
Iberia
Deal found 6/16![Iberia logo]()
$916
This Iberia deal was found by Cheapflights users on 6/18. 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.
Mon 8/1711:04 am
SDF
- LHR
1 stop18h 26m
Iberia
Wed 9/167:50 am
LHR
- SDF
2 stops19h 43m
Iberia
Deal found 6/18![Iberia logo]()
$924
Best flights from Louisville to HeathrowDiscover 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 June 18, 2026.
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 June 18, 2026.
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 10/1410:25 am
SDF
- LHR
2 stops15h 05m
United Airlines
Wed 10/217:25 am
LHR
- SDF
2 stops18h 06m
United Airlines
Deal found 6/15![United Airlines logo]()
$907
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:42 pm
SDF
- LHR
2 stops14h 38m
Delta
Wed 9/239:55 am
LHR
- SDF
2 stops16h 17m
Delta
Deal found 6/14![Delta logo]()
$908
This oojo deal was found by Cheapflights users on 6/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:48 am
SDF
- LHR
1 stop20h 07m
British Airways
Wed 8/59:15 am
LHR
- SDF
1 stop13h 44m
British Airways
Deal found 6/18![British Airways logo]()
$1,057
This Cheapflightsfares deal was found by Cheapflights users on 6/18. 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.
Wed 7/2910:05 am
SDF
- LHR
2 stops16h 35m
Lufthansa
Wed 8/56:30 am
LHR
- SDF
2 stops17h 48m
Lufthansa
Deal found 6/18![Lufthansa logo]()
$1,059
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Sun 9/2710:25 am
SDF
- LHR
2 stops14h 30m
United Airlines
Sat 10/38:45 am
LHR
- SDF
2 stops16h 46m
United Airlines
Deal found 6/14![United Airlines logo]()
$959
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:50 pm
SDF
- LHR
1 stop14h 25m
Delta
Tue 8/259:55 am
LHR
- SDF
2 stops16h 38m
Delta
Deal found 6/14![Delta logo]()
$964
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Wed 9/91:56 pm
SDF
- LHR
2 stops15h 04m
United Airlines
Tue 9/156:50 am
LHR
- SDF
2 stops15h 49m
United Airlines
Deal found 6/18![United Airlines logo]()
$967
This Delta deal was found by Cheapflights users on 6/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:02 pm
SDF
- LHR
1 stop12h 23m
Delta
Wed 8/58:40 am
LHR
- SDF
2 stops15h 31m
Delta
Deal found 6/18![Delta logo]()
$1,068
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:17 am
SDF
- LHR
2 stops14h 03m
Delta
Sun 8/168:40 am
LHR
- SDF
2 stops15h 31m
Delta
Deal found 6/15![Delta logo]()
$1,075
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Fri 7/312:10 pm
SDF
- LHR
1 stop11h 35m
United Airlines
Mon 8/105:50 pm
LHR
- SDF
2 stops30h 17m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,112
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/152:22 pm
SDF
- LHR
1 stop11h 48m
Delta
Fri 7/241:25 pm
LHR
- SDF
1 stop16h 01m
Delta
Deal found 6/16![Delta logo]()
$1,119
Last-minute flights from Louisville to HeathrowDiscover last-minute flight deals from Louisville to Heathrow. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Heathrow. Data last updated June 18, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 6/15. 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 7/2912:00 pm
SDF
- LHR
1 stop13h 55m
British Airways
Tue 8/117:10 pm
LHR
- SDF
2 stops31h 15m
British Airways
Deal found 6/15![British Airways logo]()
$1,000
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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.
Wed 7/2910:05 am
SDF
- LHR
2 stops19h 35m
Lufthansa
Tue 8/117:30 pm
LHR
- SDF
2 stops28h 35m
Lufthansa
Deal found 6/15![Lufthansa logo]()
$1,039
This oojo deal was found by Cheapflights users on 6/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:48 am
SDF
- LHR
1 stop20h 07m
British Airways
Wed 8/59:15 am
LHR
- SDF
1 stop13h 44m
British Airways
Deal found 6/17![British Airways logo]()
$1,048
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2912:49 pm
SDF
- LHR
1 stop15h 26m
Delta
Wed 8/58:40 am
LHR
- SDF
2 stops15h 31m
Delta
Deal found 6/15![Delta logo]()
$1,049
This FlightHub deal was found by Cheapflights users on 6/16. 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 7/2912:00 pm
SDF
- LHR
1 stop13h 55m
Multiple Airlines
Wed 8/56:15 am
LHR
- SDF
2 stops20h 10m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$1,054
This FlightHub deal was found by Cheapflights users on 6/18. 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 7/295:10 pm
SDF
- LHR
1 stop11h 25m
Multiple Airlines
Tue 8/117:50 am
LHR
- SDF
2 stops18h 41m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$1,055
One-way flights from Louisville to HeathrowSearch for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This oojo deal was found by Cheapflights users on 6/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:58 pm
SDF
- LHR
1 stop12h 27m
British Airways
Deal found 6/18![British Airways logo]()
$323
This British Airways deal was found by Cheapflights users on 6/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:11 pm
SDF
- LHR
1 stop10h 59m
British Airways
Deal found 6/15![British Airways logo]()
$331
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 10/49:04 am
SDF
- LHR
2 stops16h 51m
United Airlines
Deal found 6/15![United Airlines logo]()
$348
This Air Canada deal was found by Cheapflights users on 6/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:04 am
SDF
- LHR
3 stops16h 26m
Air Canada
Deal found 6/18![Air Canada logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:25 am
SDF
- LHR
2 stops20h 30m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$369
This oojo deal was found by Cheapflights users on 6/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:59 pm
SDF
- LHR
1 stop11h 51m
British Airways
Deal found 6/15![British Airways logo]()
$378
This Air Canada deal was found by Cheapflights users on 6/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:04 am
SDF
- LHR
3 stops16h 26m
Air Canada
Deal found 6/15![Air Canada logo]()
$436
This oojo deal was found by Cheapflights users on 6/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1512:00 pm
SDF
- LHR
1 stop13h 55m
British Airways
Deal found 6/17![British Airways logo]()
$460
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Wed 7/157:15 am
SDF
- LHR
2 stops17h 40m
United Airlines
Deal found 6/17![United Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Fri 9/47:10 am
SDF
- LHR
2 stops19h 05m
United Airlines
Deal found 6/15![United Airlines logo]()
$513
This FlightHub deal was found by Cheapflights users on 6/17. 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.
Fri 9/46:15 am
SDF
- LHR
2 stops22h 45m
Air Canada
Deal found 6/17![Air Canada logo]()
$517
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 June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $886 (FlightHub) |
One-way from | $323 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,345 |
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 June 18, 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
Cheapest round-trip
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 10/14
10:25 am-6:30 am
2 stops15h 05m
London Heathrow
Wed 10/21
7:25 am-8:31 pm
2 stops18h 06m
$907
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Mon 9/14
2:42 pm-10:20 am
2 stops14h 38m
London Heathrow
Wed 9/23
9:55 am-9:12 pm
2 stops16h 17m
$908
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 9/27
10:25 am-5:55 am
2 stops14h 30m
London Heathrow
Sat 10/3
8:45 am-8:31 pm
2 stops16h 46m
$959
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Mon 8/17
5:50 pm-1:15 pm
1 stop14h 25m
London Heathrow
Tue 8/25
9:55 am-9:33 pm
2 stops16h 38m
$964
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 9/9
1:56 pm-10:00 am
2 stops15h 04m
London Heathrow
Tue 9/15
6:50 am-5:39 pm
2 stops15h 49m
$967
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/29
6:48 am-7:55 am
1 stop20h 07m
London Heathrow
Wed 8/5
9:15 am-5:59 pm
1 stop13h 44m
$1,057
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/29
10:05 am-7:40 am
2 stops16h 35m
London Heathrow
Wed 8/5
6:30 am-7:18 pm
2 stops17h 48m
$1,059
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/29
1:02 pm-6:25 am
1 stop12h 23m
London Heathrow
Wed 8/5
8:40 am-7:11 pm
2 stops15h 31m
$1,068
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 8/12
11:17 am-6:20 am
2 stops14h 03m
London Heathrow
Sun 8/16
8:40 am-7:11 pm
2 stops15h 31m
$1,075
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Fri 7/31
2:10 pm-6:45 am
1 stop11h 35m
London Heathrow
Mon 8/10
5:50 pm-7:07 pm
2 stops30h 17m
$1,112
Showing 1-10 of 19 resultsSorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
SDF-LHR
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
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 $630). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $1,345). 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 June 18, 2026.
See what other customers who have flown with KLM,Delta, andUnited Airlines 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.
Crew
8.4
Overall
7.8
Boarding
7.8
Food
7.3
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Boarding
7.8
Food
7.3
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Boarding
7.8
Food
7.3
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Boarding
7.8
Food
7.3
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Boarding
7.8
Food
7.3
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Overall
7.8
Boarding
7.8
Food
7.3
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
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.
Traveling to a place near London Heathrow Airport?
Book flights to London Heathrow Airport if you plan to visit one of these locationsIlford
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Top 6 airlines flying from Louisville to Heathrow
Discover the top 6 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 June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$574 | Average$716 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$577 | Average$774 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$588 | Average$859 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$589 | Average$959 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$655 | Average$999 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$678 | Average$1,091 | FlexibilityNo cancel fee | On-time69% |