$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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
Jun 19 — Jun 261
Round-trip
1 adult, Economy
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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.Cheap flight deals from Louisville to Heathrow
Cheapest
Best
Last-minute
One-way
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 May 20, 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 May 20, 2026.
This Virgin Atlantic deal was found by Cheapflights users on 5/19. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/212:53 pm
SDF
- LHR
1 stop12h 32m
Virgin Atlantic
Mon 11/2311:30 am
LHR
- SDF
2 stops15h 11m
Virgin Atlantic
Deal found 5/19![Virgin Atlantic logo]()
$483
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Tue 11/106:00 pm
SDF
- LHR
1 stop13h 00m
United Airlines
Thu 11/126:50 am
LHR
- SDF
2 stops14h 59m
United Airlines
Deal found 5/17![United Airlines logo]()
$837
This The Travel House deal was found by Cheapflights users on 5/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:24 pm
SDF
- LHR
2 stops19h 36m
Scandinavian Airlines
Mon 11/236:40 am
LHR
- SDF
2 stops22h 22m
Scandinavian Airlines
Deal found 5/19![Scandinavian Airlines logo]()
$853
This Iberia deal was found by Cheapflights users on 5/19. 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 9/97:07 pm
SDF
- LHR
1 stop10h 43m
Iberia
Tue 9/227:50 am
LHR
- SDF
2 stops20h 08m
Iberia
Deal found 5/19![Iberia logo]()
$865
This Iberia deal was found by Cheapflights users on 5/16. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:20 pm
SDF
- LHR
1 stop12h 05m
Iberia
Fri 11/2011:25 am
LHR
- SDF
2 stops16h 34m
Iberia
Deal found 5/16![Iberia logo]()
$867
This Scandinavian Airlines deal was found by Cheapflights users on 5/19. 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.
Mon 11/23:24 pm
SDF
- LHR
2 stops25h 16m
Scandinavian Airlines
Mon 11/96:40 am
LHR
- SDF
2 stops20h 55m
Scandinavian Airlines
Deal found 5/19![Scandinavian Airlines logo]()
$874
This FlightHub deal was found by Cheapflights users on 5/16. 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.
Mon 11/23:24 pm
SDF
- LHR
2 stops19h 36m
Scandinavian Airlines
Fri 11/206:40 am
LHR
- SDF
2 stops22h 22m
Scandinavian Airlines
Deal found 5/16![Scandinavian Airlines logo]()
$876
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 May 20, 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 May 20, 2026.
This Delta deal was found by Cheapflights users on 5/15. 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 9/217:25 pm
SDF
- LHR
1 stop12h 40m
Delta
Fri 10/26:30 am
LHR
- SDF
2 stops16h 11m
Delta
Deal found 5/15![Delta logo]()
$906
This Scandinavian Airlines deal was found by Cheapflights users on 5/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:24 pm
SDF
- LHR
2 stops19h 36m
Scandinavian Airlines
Mon 11/96:40 am
LHR
- SDF
2 stops22h 22m
Scandinavian Airlines
Deal found 5/17![Scandinavian Airlines logo]()
$911
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Tue 11/102:20 pm
SDF
- LHR
1 stop11h 20m
United Airlines
Thu 11/121:35 pm
LHR
- SDF
1 stop15h 30m
United Airlines
Deal found 5/16![United Airlines logo]()
$996
This Delta deal was found by Cheapflights users on 5/19. 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 10/712:53 pm
SDF
- LHR
2 stops13h 17m
Delta
Mon 10/129:55 am
LHR
- SDF
2 stops15h 56m
Delta
Deal found 5/19![Delta logo]()
$958
This Delta deal was found by Cheapflights users on 5/15. 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 8/172:34 pm
SDF
- LHR
2 stops14h 46m
Delta
Tue 8/256:30 am
LHR
- SDF
2 stops15h 45m
Delta
Deal found 5/15![Delta logo]()
$972
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Mon 7/271:08 pm
SDF
- LHR
1 stop11h 47m
United Airlines
Sun 8/27:45 am
LHR
- SDF
1 stop20h 05m
United Airlines
Deal found 5/17![United Airlines logo]()
$1,149
This Delta deal was found by Cheapflights users on 5/16. 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 7/2912:49 pm
SDF
- LHR
1 stop12h 56m
Delta
Tue 8/116:30 am
LHR
- SDF
2 stops14h 22m
Delta
Deal found 5/16![Delta logo]()
$1,050
This Delta deal was found by Cheapflights users on 5/20. 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.
Sun 7/127:49 pm
SDF
- LHR
1 stop12h 16m
Delta
Sun 7/266:30 am
LHR
- SDF
2 stops19h 48m
Delta
Deal found 5/20![Delta logo]()
$1,166
This Delta deal was found by Cheapflights users on 5/18. 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.
Sun 7/512:46 pm
SDF
- LHR
1 stop16h 54m
Delta
Sun 7/196:30 am
LHR
- SDF
2 stops15h 17m
Delta
Deal found 5/18![Delta logo]()
$1,167
Last-minute flights from Louisville to HeathrowDiscover last-minute flight deals from Louisville to Heathrow. Data last updated May 20, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Heathrow. Data last updated May 20, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 5/16. 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 5/2010:39 am
SDF
- LHR
1 stop15h 31m
Delta
Fri 6/196:30 am
LHR
- SDF
2 stops15h 16m
Delta
Deal found 5/16![Delta logo]()
$1,265
This oojo deal was found by Cheapflights users on 5/19. 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 5/209:43 am
SDF
- LHR
1 stop18h 22m
British Airways
Fri 6/199:15 am
LHR
- SDF
1 stop20h 13m
British Airways
Deal found 5/19![British Airways logo]()
$1,289
This United Airlines deal was found by Cheapflights users on 5/20. 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 5/203:30 pm
SDF
- LHR
1 stop15h 05m
United Airlines
Fri 6/197:45 am
LHR
- SDF
1 stop17h 40m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,292
This Delta deal was found by Cheapflights users on 5/20. 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 5/277:50 am
SDF
- LHR
1 stop18h 20m
Delta
Wed 6/38:40 am
LHR
- SDF
2 stops16h 10m
Delta
Deal found 5/20![Delta logo]()
$1,262
This oojo deal was found by Cheapflights users on 5/20. 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 5/273:22 pm
SDF
- LHR
1 stop10h 33m
British Airways
Wed 6/39:15 am
LHR
- SDF
1 stop12h 57m
British Airways
Deal found 5/20![British Airways logo]()
$1,285
This Delta deal was found by Cheapflights users on 5/18. 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.
Tue 6/27:50 am
SDF
- LHR
1 stop18h 20m
Delta
Wed 6/106:30 am
LHR
- SDF
2 stops15h 16m
Delta
Deal found 5/18![Delta logo]()
$1,264
This Cheapflightsfares deal was found by Cheapflights users on 5/18. 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.
Tue 6/22:10 pm
SDF
- LHR
2 stops17h 30m
Lufthansa
Wed 6/109:30 am
LHR
- SDF
2 stops14h 48m
Lufthansa
Deal found 5/18![Lufthansa logo]()
$1,266
This oojo deal was found by Cheapflights users on 5/18. 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.
Tue 6/22:51 pm
SDF
- LHR
1 stop12h 14m
British Airways
Wed 6/102:45 pm
LHR
- SDF
1 stop12h 34m
British Airways
Deal found 5/18![British Airways logo]()
$1,287
This Mytrip deal was found by Cheapflights users on 5/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:35 am
SDF
- LHR
2 stops15h 00m
Multiple Airlines
Mon 6/155:40 pm
LHR
- SDF
2 stops24h 52m
Multiple Airlines
Deal found 5/19![Multiple Airlines logo]()
$1,236
This United Airlines deal was found by Cheapflights users on 5/19. 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 6/96:25 am
SDF
- LHR
1 stop10h 00m
United Airlines
Mon 6/155:50 pm
LHR
- SDF
2 stops28h 13m
United Airlines
Deal found 5/19![United Airlines logo]()
$1,275
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 May 20, 2026.
Search for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated May 20, 2026.
This oojo deal was found by Cheapflights users on 5/17. 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.
Tue 9/17:08 pm
SDF
- LHR
1 stop11h 07m
British Airways
Deal found 5/17![British Airways logo]()
$330
This American Airlines deal was found by Cheapflights users on 5/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:07 pm
SDF
- LHR
1 stop12h 08m
American Airlines
Deal found 5/17![American Airlines logo]()
$331
This Virgin Atlantic deal was found by Cheapflights users on 5/17. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:15 am
SDF
- LHR
2 stops15h 30m
Virgin Atlantic
Deal found 5/17![Virgin Atlantic logo]()
$348
This Ovago deal was found by Cheapflights users on 5/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:00 pm
SDF
- LHR
1 stop20h 55m
British Airways
Deal found 5/17![British Airways logo]()
$355
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Tue 9/11:50 pm
SDF
- LHR
2 stops14h 30m
United Airlines
Deal found 5/17![United Airlines logo]()
$379
This oojo deal was found by Cheapflights users on 5/18. 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.
Fri 9/47:08 pm
SDF
- LHR
1 stop10h 22m
British Airways
Deal found 5/18![British Airways logo]()
$380
This Air Canada deal was found by Cheapflights users on 5/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:50 pm
SDF
- LHR
3 stops17h 00m
Air Canada
Deal found 5/17![Air Canada logo]()
$388
This Air Canada deal was found by Cheapflights users on 5/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:00 am
SDF
- LHR
3 stops16h 30m
Air Canada
Deal found 5/17![Air Canada logo]()
$391
This Virgin Atlantic deal was found by Cheapflights users on 5/17. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:43 am
SDF
- LHR
2 stops15h 02m
Virgin Atlantic
Deal found 5/17![Virgin Atlantic logo]()
$398
This Air Canada deal was found by Cheapflights users on 5/19. 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.
Fri 9/47:10 am
SDF
- LHR
2 stops18h 25m
Air Canada
Deal found 5/19![Air Canada logo]()
$407
This Cheapflightsfares deal was found by Cheapflights users on 5/19. 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 7/2910:33 am
SDF
- LHR
2 stops17h 32m
Aer Lingus
Deal found 5/19![Aer Lingus logo]()
$414
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 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $483 (Virgin Atlantic) |
One-way from | $330 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,172 |
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 20, 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
Mon 9/21
7:25 pm-1:05 pm
1 stop12h 40m
London Heathrow
Fri 10/2
6:30 am-5:41 pm
2 stops16h 11m
$906
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Mon 11/2
3:24 pm-4:00 pm
2 stops19h 36m
London Heathrow
Mon 11/9
6:40 am-12:02 am
2 stops22h 22m
$911
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 10/7
12:53 pm-7:10 am
2 stops13h 17m
London Heathrow
Mon 10/12
9:55 am-8:51 pm
2 stops15h 56m
$958
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Mon 8/17
2:34 pm-10:20 am
2 stops14h 46m
London Heathrow
Tue 8/25
6:30 am-5:15 pm
2 stops15h 45m
$972
Quickest round-trip
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Tue 11/10
2:20 pm-6:40 am
1 stop11h 20m
London Heathrow
Thu 11/12
1:35 pm-12:05 am
1 stop15h 30m
$996
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/29
12:49 pm-6:45 am
1 stop12h 56m
London Heathrow
Tue 8/11
6:30 am-3:52 pm
2 stops14h 22m
$1,050
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Mon 7/27
1:08 pm-5:55 am
1 stop11h 47m
London Heathrow
Sun 8/2
7:45 am-10:50 pm
1 stop20h 05m
$1,149
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 7/12
7:49 pm-1:05 pm
1 stop12h 16m
London Heathrow
Sun 7/26
6:30 am-9:18 pm
2 stops19h 48m
$1,166
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 7/5
12:46 pm-10:40 am
1 stop16h 54m
London Heathrow
Sun 7/19
6:30 am-4:47 pm
2 stops15h 17m
$1,167
Cheapest one-way
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Tue 9/15
12:53 pm-7:10 am
2 stops13h 17m
$348
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 May.
| 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
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 $1,301). 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 20, 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.
Overall
7.9
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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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Harrow
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Broadway
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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 May 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$574 | Average$716 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$577 | Average$799 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$588 | Average$859 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$589 | Average$948 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$676 | Average$1,064 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$678 | Average$1,037 | FlexibilityNo cancel fee | On-time69% |