$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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
maj 23 — maj 301
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
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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
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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 april 23, 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 april 23, 2026.
This United Airlines deal was found by Cheapflights users on 4/21. 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.
ons. 10/211:55 pm
SDF
- LHR
1 stop17h 00m
United Airlines
fre. 10/238:40 am
LHR
- SDF
2 stops16h 34m
United Airlines
Deal found 4/21![United Airlines logo]()
$782
This Iberia deal was found by Cheapflights users on 4/21. 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.
ons. 9/97:07 pm
SDF
- LHR
1 stop10h 43m
Iberia
tir. 9/226:15 am
LHR
- SDF
2 stops21h 43m
Iberia
Deal found 4/21![Iberia logo]()
$867
This FlightHub deal was found by Cheapflights users on 4/18. 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.
man. 9/73:24 pm
SDF
- LHR
2 stops21h 16m
Scandinavian Airlines
man. 9/216:40 am
LHR
- SDF
2 stops20h 56m
Scandinavian Airlines
Deal found 4/18![Scandinavian Airlines logo]()
$877
This Expedia deal was found by Cheapflights users on 4/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 11/25:45 pm
SDF
- LHR
2 stops17h 15m
Scandinavian Airlines
lør. 11/145:00 pm
LHR
- SDF
2 stops32h 51m
Scandinavian Airlines
Deal found 4/18![Scandinavian Airlines logo]()
$882
This FlightHub deal was found by Cheapflights users on 4/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 8/236:11 pm
SDF
- LHR
1 stop12h 04m
British Airways
fre. 12/46:15 am
LHR
- SDF
2 stops17h 58m
British Airways
Deal found 4/19![British Airways logo]()
$890
This KAYAK deal was found by Cheapflights users on 4/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 10/271:00 pm
SDF
- LHR
2 stops23h 00m
Scandinavian Airlines
man. 11/96:40 am
LHR
- SDF
2 stops20h 55m
Scandinavian Airlines
Deal found 4/18![Scandinavian Airlines logo]()
$894
This FlightHub deal was found by Cheapflights users on 4/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 9/26:49 am
SDF
- LHR
1 stop21h 11m
British Airways
ons. 9/167:30 pm
LHR
- SDF
2 stops26h 39m
British Airways
Deal found 4/19![British Airways logo]()
$895
This oojo deal was found by Cheapflights users on 4/21. 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.
ons. 8/265:08 pm
SDF
- LHR
1 stop9h 52m
British Airways
ons. 9/22:45 pm
LHR
- SDF
1 stop13h 16m
British Airways
Deal found 4/21![British Airways logo]()
$896
This FlightHub deal was found by Cheapflights users on 4/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 8/175:08 pm
SDF
- LHR
1 stop9h 52m
Multiple Airlines
tir. 8/257:50 am
LHR
- SDF
2 stops20h 11m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$897
This American Airlines deal was found by Cheapflights users on 4/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 8/172:43 pm
SDF
- LHR
1 stop11h 07m
American Airlines
tir. 8/252:45 pm
LHR
- SDF
1 stop13h 16m
American Airlines
Deal found 4/19![American Airlines logo]()
$901
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 april 23, 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 april 23, 2026.
This United Airlines deal was found by Cheapflights users on 4/21. 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.
søn. 9/206:00 am
SDF
- LHR
1 stop19h 55m
United Airlines
lør. 10/38:30 am
LHR
- SDF
2 stops15h 39m
United Airlines
Deal found 4/21![United Airlines logo]()
$983
This Delta deal was found by Cheapflights users on 4/20. 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.
søn. 10/185:45 pm
SDF
- LHR
2 stops13h 20m
Delta
søn. 10/2510:10 am
LHR
- SDF
2 stops17h 52m
Delta
Deal found 4/20![Delta logo]()
$990
This Virgin Atlantic deal was found by Cheapflights users on 4/20. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 7/2211:17 am
SDF
- LHR
2 stops14h 28m
Virgin Atlantic
tir. 8/411:45 am
LHR
- SDF
2 stops17h 41m
Virgin Atlantic
Deal found 4/20![Virgin Atlantic logo]()
$1,125
This United Airlines deal was found by Cheapflights users on 4/22. 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.
ons. 5/205:36 am
SDF
- LHR
2 stops19h 54m
United Airlines
fre. 6/1910:00 am
LHR
- SDF
1 stop17h 15m
United Airlines
Deal found 4/22![United Airlines logo]()
$1,092
This Delta deal was found by Cheapflights users on 4/18. 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.
tir. 6/25:47 pm
SDF
- LHR
2 stops14h 18m
Delta
ons. 6/108:40 am
LHR
- SDF
2 stops15h 31m
Delta
Deal found 4/18![Delta logo]()
$1,202
This United Airlines deal was found by Cheapflights users on 4/18. 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.
lør. 5/96:17 am
SDF
- LHR
1 stop10h 08m
United Airlines
ons. 5/1311:05 am
LHR
- SDF
1 stop17h 51m
United Airlines
Deal found 4/18![United Airlines logo]()
$1,131
Last-minute flights from Louisville to HeathrowDiscover last-minute flight deals from Louisville to Heathrow. Data last updated april 23, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Heathrow. Data last updated april 23, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 4/248:47 am
SDF
- LHR
2 stops16h 43m
Multiple Airlines
søn. 4/266:30 am
LHR
- SDF
2 stops18h 46m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$1,038
This Iberia deal was found by Cheapflights users on 4/22. 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.
søn. 4/2611:16 am
SDF
- LHR
1 stop18h 14m
Iberia
tir. 5/126:15 am
LHR
- SDF
2 stops20h 15m
Iberia
Deal found 4/22![Iberia logo]()
$1,023
This Finnair deal was found by Cheapflights users on 4/22. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 4/267:01 pm
SDF
- LHR
1 stop12h 14m
Multiple Airlines
tir. 5/121:45 pm
LHR
- SDF
1 stop13h 46m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,047
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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.
ons. 5/64:17 pm
SDF
- LHR
2 stops15h 33m
Lufthansa
ons. 5/137:25 am
LHR
- SDF
2 stops20h 05m
Lufthansa
Deal found 4/22![Lufthansa logo]()
$1,039
This Delta deal was found by Cheapflights users on 4/21. 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.
ons. 5/611:12 am
SDF
- LHR
1 stop15h 03m
Delta
ons. 5/138:40 am
LHR
- SDF
2 stops15h 28m
Delta
Deal found 4/21![Delta logo]()
$1,052
This The Travel House deal was found by Cheapflights users on 4/22. 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.
man. 5/117:15 am
SDF
- LHR
2 stops21h 45m
Air Canada
tor. 5/2810:50 am
LHR
- SDF
2 stops17h 59m
Air Canada
Deal found 4/22![Air Canada logo]()
$1,027
This Expedia deal was found by Cheapflights users on 4/22. 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.
man. 5/117:01 pm
SDF
- LHR
1 stop10h 29m
Finnair
tor. 5/283:15 pm
LHR
- SDF
1 stop12h 04m
Finnair
Deal found 4/22![Finnair logo]()
$1,034
This Orbitz deal was found by Cheapflights users on 4/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/1312:11 pm
SDF
- LHR
1 stop17h 19m
Iberia
ons. 6/176:15 am
LHR
- SDF
2 stops21h 04m
Iberia
Deal found 4/21![Iberia logo]()
$1,043
This American Airlines deal was found by Cheapflights users on 4/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
søn. 5/173:25 pm
SDF
- LHR
1 stop10h 40m
American Airlines
ons. 6/39:15 am
LHR
- SDF
1 stop13h 30m
American Airlines
Deal found 4/18![American Airlines logo]()
$1,017
This FlightHub deal was found by Cheapflights users on 4/18. 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.
man. 5/184:35 pm
SDF
- LHR
1 stop12h 00m
British Airways
ons. 6/311:10 am
LHR
- SDF
1 stop16h 09m
British Airways
Deal found 4/18![British Airways logo]()
$1,032
This oojo deal was found by Cheapflights users on 4/20. 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.
tir. 5/194:35 pm
SDF
- LHR
1 stop10h 25m
British Airways
tor. 5/282:45 pm
LHR
- SDF
1 stop12h 34m
British Airways
Deal found 4/20![British Airways logo]()
$1,012
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 april 23, 2026.
Search for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated april 23, 2026.
This oojo deal was found by Cheapflights users on 4/19. 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.
søn. 8/236:49 am
SDF
- LHR
1 stop21h 11m
British Airways
Deal found 4/19![British Airways logo]()
$330
This oojo deal was found by Cheapflights users on 4/19. 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.
lør. 10/107:29 pm
SDF
- LHR
1 stop29h 51m
British Airways
Deal found 4/19![British Airways logo]()
$341
This FlightHub deal was found by Cheapflights users on 4/22. 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.
tir. 8/2511:05 am
SDF
- LHR
2 stops18h 30m
British Airways
Deal found 4/22![British Airways logo]()
$345
This Delta deal was found by Cheapflights users on 4/21. 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.
ons. 10/142:15 pm
SDF
- LHR
2 stops12h 00m
Delta
Deal found 4/21![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 4/19. 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.
søn. 8/2310:15 am
SDF
- LHR
2 stops15h 40m
United Airlines
Deal found 4/19![United Airlines logo]()
$379
This oojo deal was found by Cheapflights users on 4/21. 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.
fre. 9/1110:31 am
SDF
- LHR
1 stop19h 44m
British Airways
Deal found 4/21![British Airways logo]()
$380
This American Airlines deal was found by Cheapflights users on 4/21. 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.
fre. 9/44:34 pm
SDF
- LHR
1 stop12h 01m
American Airlines
Deal found 4/21![American Airlines logo]()
$381
This Travelocity deal was found by Cheapflights users on 4/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 7/2310:43 am
SDF
- LHR
2 stops18h 52m
Iberia
Deal found 4/21![Iberia logo]()
$389
This Air Canada deal was found by Cheapflights users on 4/21. 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.
ons. 10/149:00 am
SDF
- LHR
3 stops16h 30m
Air Canada
Deal found 4/21![Air Canada logo]()
$391
This Delta deal was found by Cheapflights users on 4/21. 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.
fre. 9/113:24 pm
SDF
- LHR
2 stops16h 41m
Delta
Deal found 4/21![Delta logo]()
$398
This United Airlines deal was found by Cheapflights users on 4/23. 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.
fre. 9/45:35 am
SDF
- LHR
2 stops19h 55m
United Airlines
Deal found 4/23![United Airlines logo]()
$402
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 april 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $867 (Iberia) |
One-way from | $330 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,109 |
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 april 23, 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
søn. 9/20
6:00 am-6:55 am
1 stop19h 55m
London Heathrow
lør. 10/3
8:30 am-7:09 pm
2 stops15h 39m
$983
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
søn. 10/18
5:45 pm-12:05 pm
2 stops13h 20m
London Heathrow
søn. 10/25
10:10 am-12:02 am
2 stops17h 52m
$990
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
ons. 5/20
5:36 am-6:30 am
2 stops19h 54m
London Heathrow
fre. 6/19
10:00 am-10:15 pm
1 stop17h 15m
$1,092
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
ons. 7/22
11:17 am-6:45 am
2 stops14h 28m
London Heathrow
tir. 8/4
11:45 am-12:26 am
2 stops17h 41m
$1,125
Quickest round-trip
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
lør. 5/9
6:17 am-9:25 pm
1 stop10h 08m
London Heathrow
ons. 5/13
11:05 am-11:56 pm
1 stop17h 51m
$1,131
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
tir. 6/2
5:47 pm-1:05 pm
2 stops14h 18m
London Heathrow
ons. 6/10
8:40 am-7:11 pm
2 stops15h 31m
$1,202
Cheapest one-way
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
lør. 10/10
7:29 pm-6:20 am
1 stop29h 51m
$341
Quickest one-way
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
ons. 10/14
2:15 pm-7:15 am
2 stops12h 00m
$348
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
søn. 8/23
10:15 am-6:55 am
2 stops15h 40m
$379
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
ons. 10/14
9:00 am-6:30 am
3 stops16h 30m
$391
Showing 1-10 of 16 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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?
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 17, 2026.
To ensure you get the cheapest price possible for a flight from Louisville to London Heathrow Airport, you should look to book at least 69 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 april 23, 2026.
See what other customers who have flown with Delta,Virgin Atlantic, 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.
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Comfort
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Comfort
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Comfort
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Comfort
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Comfort
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Entertainment
7.8
Overall
7.9
Crew
8.5
Comfort
7.9
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - 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
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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Search flights from Louisville to Heathrow by cabin class
Find flights from Louisville to Heathrow, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Heathrow
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on april 23, 2026.
Louisville and Heathrow flights
Browse other Louisville and Heathrow flight options. Last updated on april 23, 2026.
Other flights from Louisville
Browse through other flights departing from Louisville. Flights are based on user searches made on Cheapflights and were last updated on april 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 april 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$577 | Average$799 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$588 | Average$859 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$589 | Average$930 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$676 | Average$1,107 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$678 | Average$975 | FlexibilityNo cancel fee | On-time69% |