$322+ Cheap flights from Louisville (SDF) to Heathrow (LHR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
Nov 12 — Nov 191
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
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Last-minute
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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 October 13, 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 October 13, 2026.
This Iberia deal was found by Cheapflights users on 10/11. 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.
Tue 11/101:14 pm -
1 stop14h 21m
Tue 11/176:05 am -
2 stops20h 31m
Deal found 10/11![Iberia logo]()
$883
This Orbitz deal was found by Cheapflights users on 10/13. 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.
Mon 11/239:02 am -
2 stops16h 28m
Tue 12/811:10 am -
2 stops17h 39m
Deal found 10/13![Multiple Airlines logo]()
$912
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Tue 11/106:16 pm -
1 stop11h 09m
Tue 11/172:10 pm -
1 stop14h 28m
Deal found 10/11![American Airlines logo]()
$915
This Orbitz deal was found by Cheapflights users on 10/13. 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.
Mon 11/231:14 pm -
2 stops17h 41m
Tue 12/811:00 am -
1 stop15h 37m
Deal found 10/13![Iberia logo]()
$924
This Iberia deal was found by Cheapflights users on 10/13. 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 11/21:14 pm -
1 stop16h 11m
Wed 11/186:15 am -
2 stops20h 21m
Deal found 10/13![Iberia logo]()
$933
This Iberia deal was found by Cheapflights users on 10/9. 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 10/125:19 pm -
1 stop12h 31m
Thu 10/226:10 am -
2 stops20h 25m
Deal found 10/9![Iberia logo]()
$936
This Expedia deal was found by Cheapflights users on 10/12. 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 11/261:14 pm -
2 stops22h 21m
Thu 12/37:30 am -
2 stops19h 07m
Deal found 10/12![Iberia logo]()
$941
This Expedia deal was found by Cheapflights users on 10/13. 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.
Fri 11/271:14 pm -
2 stops19h 16m
Fri 12/47:30 am -
2 stops19h 08m
Deal found 10/13![Iberia logo]()
$942
This Expedia deal was found by Cheapflights users on 10/12. 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 11/261:14 pm -
1 stop12h 41m
Thu 12/311:45 am -
1 stop16h 09m
Deal found 10/12![British Airways logo]()
$943
This Iberia deal was found by Cheapflights users on 10/9. 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.
Tue 11/241:17 pm -
1 stop14h 18m
Tue 12/16:05 am -
2 stops20h 32m
Deal found 10/9![Iberia logo]()
$945
This Virgin Atlantic deal was found by Cheapflights users on 10/10. 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.
Wed 12/212:50 pm -
1 stop13h 15m
Tue 12/811:45 am -
2 stops14h 32m
Deal found 10/10![Virgin Atlantic logo]()
$951
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 October 13, 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 October 13, 2026.
This United Airlines deal was found by Cheapflights users on 10/9. 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 2/28:50 am -
2 stops31h 10m
Tue 2/161:00 pm -
2 stops29h 02m
Deal found 10/9![United Airlines logo]()
$888
This Delta deal was found by Cheapflights users on 10/9. 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 2/212:53 pm -
2 stops13h 22m
Sun 2/148:40 am -
2 stops19h 15m
Deal found 10/9![Delta logo]()
$955
This KLM deal was found by Cheapflights users on 10/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/412:53 pm -
1 stop15h 07m
Tue 2/1610:50 am -
1 stop15h 01m
Deal found 10/9![KLM logo]()
$982
This United Airlines deal was found by Cheapflights users on 10/9. 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 2/31:41 pm -
1 stop11h 39m
Tue 2/161:00 pm -
2 stops29h 02m
Deal found 10/9![United Airlines logo]()
$892
This Delta deal was found by Cheapflights users on 10/13. 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 3/1412:53 pm -
1 stop14h 57m
Sun 3/2110:50 am -
1 stop15h 45m
Deal found 10/13![Delta logo]()
$983
This United Airlines deal was found by Cheapflights users on 10/10. 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 2/151:55 pm -
1 stop11h 00m
Fri 2/1910:25 am -
1 stop14h 49m
Deal found 10/10![United Airlines logo]()
$912
This United Airlines deal was found by Cheapflights users on 10/9. 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 3/21:55 pm -
1 stop13h 00m
Fri 3/53:10 pm -
1 stop13h 05m
Deal found 10/9![United Airlines logo]()
$912
This United Airlines deal was found by Cheapflights users on 10/9. 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 2/231:00 pm -
1 stop14h 25m
Tue 3/167:40 am -
1 stop13h 14m
Deal found 10/9![United Airlines logo]()
$912
This United Airlines deal was found by Cheapflights users on 10/11. 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 4/71:00 pm -
2 stops16h 00m
Sun 4/118:45 am -
2 stops16h 29m
Deal found 10/11![United Airlines logo]()
$936
This United Airlines deal was found by Cheapflights users on 10/13. 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 11/25:57 pm -
1 stop13h 03m
Fri 11/136:50 am -
2 stops17h 40m
Deal found 10/13![United Airlines logo]()
$961
This United Airlines deal was found by Cheapflights users on 10/13. 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 11/210:27 am -
2 stops15h 13m
Wed 11/189:00 am -
2 stops16h 52m
Deal found 10/13![United Airlines logo]()
$964
Last-minute flights from Louisville to HeathrowDiscover last-minute flight deals from Louisville to Heathrow. Data last updated October 13, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Heathrow. Data last updated October 13, 2026 and is based on user searches.
This Iberia deal was found by Cheapflights users on 10/13. 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 11/21:14 pm -
1 stop16h 11m
Wed 11/186:15 am -
2 stops20h 21m
Deal found 10/13![Iberia logo]()
$933
This United Airlines deal was found by Cheapflights users on 10/12. 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 11/92:10 pm -
1 stop10h 45m
Mon 5/105:50 pm -
2 stops31h 10m
Deal found 10/12![United Airlines logo]()
$952
This Iberia deal was found by Cheapflights users on 10/11. 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.
Tue 11/101:14 pm -
1 stop14h 21m
Tue 11/176:05 am -
2 stops20h 31m
Deal found 10/11![Iberia logo]()
$883
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Tue 11/106:16 pm -
1 stop11h 09m
Tue 11/172:10 pm -
1 stop14h 28m
Deal found 10/11![American Airlines logo]()
$915
This Orbitz deal was found by Cheapflights users on 10/13. 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.
Mon 11/239:02 am -
2 stops16h 28m
Tue 12/811:10 am -
2 stops17h 39m
Deal found 10/13![Multiple Airlines logo]()
$912
This Orbitz deal was found by Cheapflights users on 10/13. 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.
Mon 11/231:14 pm -
2 stops17h 41m
Tue 12/811:00 am -
1 stop15h 37m
Deal found 10/13![Iberia logo]()
$924
This Iberia deal was found by Cheapflights users on 10/9. 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.
Tue 11/241:17 pm -
1 stop14h 18m
Tue 12/16:05 am -
2 stops20h 32m
Deal found 10/9![Iberia logo]()
$945
This Expedia deal was found by Cheapflights users on 10/12. 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 11/261:14 pm -
2 stops22h 21m
Thu 12/37:30 am -
2 stops19h 07m
Deal found 10/12![Iberia logo]()
$941
This Expedia deal was found by Cheapflights users on 10/12. 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 11/261:14 pm -
1 stop12h 41m
Thu 12/311:45 am -
1 stop16h 09m
Deal found 10/12![British Airways logo]()
$943
This Expedia deal was found by Cheapflights users on 10/13. 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.
Fri 11/271:14 pm -
2 stops19h 16m
Fri 12/47:30 am -
2 stops19h 08m
Deal found 10/13![Iberia logo]()
$942
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 October 13, 2026.
Search for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated October 13, 2026.
This Expedia deal was found by Cheapflights users on 10/10. 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.
Tue 1/121:02 pm -
1 stop15h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![British Airways logo]()
$322
This United Airlines deal was found by Cheapflights users on 10/13. 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 1/128:50 am -
2 stops31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![United Airlines logo]()
$328
This Expedia deal was found by Cheapflights users on 10/11. 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.
Tue 1/125:43 pm -
2 stops17h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Lufthansa logo]()
$330
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Tue 1/121:02 pm -
1 stop15h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![American Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/11. 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.
Sat 1/96:15 am -
1 stop33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![United Airlines logo]()
$343
This FlightHub deal was found by Cheapflights users on 10/11. 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.
Tue 1/127:00 am -
2 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Air Canada logo]()
$346
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 11/247:30 am -
2 stops20h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Aer Lingus logo]()
$426
This Cheapflightsfares deal was found by Cheapflights users on 10/11. 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.
Sun 10/1810:16 am -
2 stops22h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Aer Lingus logo]()
$427
This FlightHub deal was found by Cheapflights users on 10/11. 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 10/195:19 pm -
2 stops17h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Aer Lingus logo]()
$436
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 October 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $761 (United Airlines) |
One-way from | $322 (Expedia) |
Popular in | July |
Cheapest in | February |
Average price | $911 |
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 7,457,451 searches. Data last updated October 13, 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 Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 1/12
1:02 pm-9:15 am
1 stop15h 13m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$322
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 1/12
8:50 am-9:00 pm
2 stops31h 10m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$328
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 11/24
7:30 am-4:50 pm
2 stops28h 20m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$435
Quickest round-trip
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 11/24
11:42 am-7:50 am
1 stop15h 08m
London Heathrow
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$467
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 2/2
8:50 am-9:00 pm
2 stops31h 10m
London Heathrow
Tue 2/16
1:00 pm-1:02 pm
2 stops29h 02m
$888
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Wed 2/3
1:41 pm-6:20 am
1 stop11h 39m
London Heathrow
Tue 2/16
1:00 pm-1:02 pm
2 stops29h 02m
$892
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Mon 2/15
1:55 pm-5:55 am
1 stop11h 00m
London Heathrow
Fri 2/19
10:25 am-8:14 pm
1 stop14h 49m
$912
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 3/2
1:55 pm-7:55 am
1 stop13h 00m
London Heathrow
Fri 3/5
3:10 pm-11:15 pm
1 stop13h 05m
$912
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Tue 2/23
1:00 pm-8:25 am
1 stop14h 25m
London Heathrow
Tue 3/16
7:40 am-4:54 pm
1 stop13h 14m
$912
LouisvilleLondon
SDF Louisville Intl - LHR London Heathrow
SDFLHR
Louisville Intl
Wed 4/7
1:00 pm-10:00 am
2 stops16h 00m
London Heathrow
Sun 4/11
8:45 am-8:14 pm
2 stops16h 29m
$936
Showing 1-10 of 15 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 October.
| 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 July is currently the most expensive (average of $1,348). 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?
Airfare is below average for this route at the moment.
Louisville to London Heathrow Airport flights typically cost between $882 and $1,114 in March.The cheapest round-trip price found within the last 5 days was $761 on United Airlines (Mar 6-Mar 9).
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 October 13, 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.
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - 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 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 7,457,451 searches. Data last updated October 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$450 | Average$1,286 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$598 | Average$956 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$606 | Average$1,115 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$676 | Average$1,034 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$705 | Average$1,131 | FlexibilityNo cancel fee | On-time69% |