$326+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
Jul 2 — Jul 91
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 June 2, 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 2, 2026.
This Iberia deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:29 am
SDF
- LHR
1 stop16h 11m
Iberia
Tue 9/226:15 am
LHR
- SDF
2 stops21h 18m
Iberia
Deal found 5/30![Iberia logo]()
$866
This Iberia deal was found by Cheapflights users on 5/27. 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.
Sun 10/187:14 pm
SDF
- LHR
1 stop12h 01m
Iberia
Thu 10/227:50 am
LHR
- SDF
2 stops20h 05m
Iberia
Deal found 5/27![Iberia logo]()
$871
This FlightHub deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:46 am
SDF
- LHR
1 stop13h 34m
British Airways
Tue 9/227:50 am
LHR
- SDF
2 stops16h 20m
British Airways
Deal found 5/31![British Airways logo]()
$886
This oojo deal was found by Cheapflights users on 5/30. 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 9/2312:30 pm
LHR
- SDF
1 stop15h 26m
British Airways
Deal found 5/30![British Airways logo]()
$892
This oojo deal was found by Cheapflights users on 5/28. 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 8/266:30 pm
SDF
- LHR
1 stop11h 45m
British Airways
Wed 9/212:00 pm
LHR
- SDF
1 stop14h 31m
British Airways
Deal found 5/28![British Airways logo]()
$893
This Iberia deal was found by Cheapflights users on 5/29. 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 5/29![Iberia logo]()
$896
This FlightHub deal was found by Cheapflights users on 5/29. 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 10/196:13 pm
SDF
- LHR
1 stop10h 12m
British Airways
Fri 10/237:55 am
LHR
- SDF
2 stops31h 52m
British Airways
Deal found 5/29![British Airways logo]()
$898
This British Airways deal was found by Cheapflights users on 5/31. 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.
Mon 9/144:51 pm
SDF
- LHR
1 stop10h 09m
British Airways
Thu 9/249:45 am
LHR
- SDF
1 stop12h 44m
British Airways
Deal found 5/31![British Airways logo]()
$899
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 2, 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 2, 2026.
This oojo deal was found by Cheapflights users on 5/27. 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 8/266:30 pm
SDF
- LHR
1 stop11h 45m
British Airways
Wed 9/212:00 pm
LHR
- SDF
1 stop14h 31m
British Airways
Deal found 5/27![British Airways logo]()
$893
This Delta deal was found by Cheapflights users on 5/27. 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 8/262:34 pm
SDF
- LHR
2 stops14h 56m
Delta
Wed 9/29:55 am
LHR
- SDF
2 stops17h 13m
Delta
Deal found 5/27![Delta logo]()
$910
This United Airlines deal was found by Cheapflights users on 5/27. 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 8/812:20 pm
SDF
- LHR
2 stops37h 10m
United Airlines
Sun 8/167:25 am
LHR
- SDF
2 stops18h 11m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,076
This Delta deal was found by Cheapflights users on 5/31. 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 7/2911:17 am
SDF
- LHR
1 stop19h 03m
Delta
Tue 8/116:30 am
LHR
- SDF
2 stops15h 30m
Delta
Deal found 5/31![Delta logo]()
$1,049
This United Airlines deal was found by Cheapflights users on 5/29. 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.
Thu 8/201:56 pm
SDF
- LHR
1 stop11h 59m
United Airlines
Sun 9/1312:15 pm
LHR
- SDF
1 stop11h 50m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,094
This Delta deal was found by Cheapflights users on 5/27. 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 7/2911:17 am
SDF
- LHR
1 stop14h 58m
Delta
Wed 8/58:40 am
LHR
- SDF
2 stops15h 31m
Delta
Deal found 5/27![Delta logo]()
$1,050
This United Airlines deal was found by Cheapflights users on 5/29. 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 7/412:20 pm
SDF
- LHR
2 stops37h 10m
United Airlines
Wed 7/157:30 am
LHR
- SDF
2 stops16h 26m
United Airlines
Deal found 5/29![United Airlines logo]()
$1,114
This United Airlines deal was found by Cheapflights users on 5/31. 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 7/53:41 pm
SDF
- LHR
1 stop14h 54m
United Airlines
Wed 7/158:00 am
LHR
- SDF
1 stop14h 03m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,120
Last-minute flights from Louisville to HeathrowDiscover last-minute flight deals from Louisville to Heathrow. Data last updated June 2, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Heathrow. Data last updated June 2, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 5/29. 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.
Sat 7/44:16 pm
SDF
- LHR
1 stop21h 39m
British Airways
Wed 7/159:15 am
LHR
- SDF
1 stop20h 19m
British Airways
Deal found 5/29![British Airways logo]()
$1,088
This oojo deal was found by Cheapflights users on 5/31. 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 7/153:39 pm
SDF
- LHR
1 stop12h 26m
British Airways
Wed 7/229:15 am
LHR
- SDF
1 stop20h 19m
British Airways
Deal found 5/31![British Airways logo]()
$1,081
This Virgin Atlantic deal was found by Cheapflights users on 5/31. 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 7/2211:17 am
SDF
- LHR
1 stop14h 08m
Virgin Atlantic
Wed 7/299:20 am
LHR
- SDF
1 stop13h 29m
Virgin Atlantic
Deal found 5/31![Virgin Atlantic logo]()
$1,078
This Cheapflightsfares deal was found by Cheapflights users on 5/29. 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 7/291:07 pm
SDF
- LHR
2 stops18h 33m
Lufthansa
Tue 8/117:30 pm
LHR
- SDF
2 stops28h 37m
Lufthansa
Deal found 5/29![Lufthansa logo]()
$1,041
This Delta deal was found by Cheapflights users on 6/1. 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 7/2911:17 am
SDF
- LHR
1 stop14h 58m
Delta
Tue 8/119:55 am
LHR
- SDF
2 stops16h 38m
Delta
Deal found 6/1![Delta logo]()
$1,049
This Delta deal was found by Cheapflights users on 5/27. 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 7/2911:17 am
SDF
- LHR
1 stop14h 58m
Delta
Wed 8/58:40 am
LHR
- SDF
2 stops15h 31m
Delta
Deal found 5/27![Delta logo]()
$1,050
This oojo deal was found by Cheapflights users on 5/29. 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 7/293:39 pm
SDF
- LHR
1 stop12h 26m
British Airways
Wed 8/59:15 am
LHR
- SDF
1 stop13h 44m
British Airways
Deal found 5/29![British Airways logo]()
$1,053
This Air Canada deal was found by Cheapflights users on 5/29. 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 7/299:00 am
SDF
- LHR
3 stops16h 30m
Multiple Airlines
Tue 8/118:30 am
LHR
- SDF
2 stops15h 35m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,098
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 2, 2026.
Search for one-way flight options from Louisville to Heathrow. Find affordable one-way fares based on user searches. Data last updated June 2, 2026.
This oojo deal was found by Cheapflights users on 5/31. 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 9/811:04 am
SDF
- LHR
1 stop17h 01m
British Airways
Deal found 5/31![British Airways logo]()
$326
This oojo deal was found by Cheapflights users on 5/31. 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 10/133:59 pm
SDF
- LHR
1 stop13h 56m
British Airways
Deal found 5/31![British Airways logo]()
$328
This Expedia deal was found by Cheapflights users on 5/27. 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 9/2210:29 am
SDF
- LHR
2 stops19h 06m
Iberia
Deal found 5/27![Iberia logo]()
$339
This Justfly.com deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:00 pm
SDF
- LHR
1 stop10h 00m
British Airways
Deal found 5/31![British Airways logo]()
$345
This United Airlines deal was found by Cheapflights users on 5/31. 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 9/89:00 am
SDF
- LHR
2 stops17h 15m
United Airlines
Deal found 5/31![United Airlines logo]()
$348
This Air Canada deal was found by Cheapflights users on 5/27. 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 9/221:50 pm
SDF
- LHR
3 stops17h 00m
Air Canada
Deal found 5/27![Air Canada logo]()
$357
This Air Canada deal was found by Cheapflights users on 5/31. 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 9/89:00 am
SDF
- LHR
3 stops16h 30m
Air Canada
Deal found 5/31![Air Canada logo]()
$360
This American Airlines deal was found by Cheapflights users on 5/29. 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.
Fri 9/44:34 pm
SDF
- LHR
1 stop12h 01m
American Airlines
Deal found 5/29![American Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 6/1. 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 9/49:00 am
SDF
- LHR
2 stops16h 55m
United Airlines
Deal found 6/1![United Airlines logo]()
$398
This Air Canada deal was found by Cheapflights users on 5/27. 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 9/49:00 am
SDF
- LHR
2 stops16h 30m
Air Canada
Deal found 5/27![Air Canada logo]()
$402
This deal was found by Cheapflights users on 5/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:48 pm
SDF
- LHR
1 stop12h 07m
United Airlines
Deal found 5/28![United Airlines logo]()
$463
This Cheapflightsfares deal was found by Cheapflights users on 5/29. 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.
Thu 8/67:31 am
SDF
- LHR
2 stops22h 39m
Aer Lingus
Deal found 5/29![Aer Lingus logo]()
$470
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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $866 (Iberia) |
One-way from | $326 (oojo) |
Popular in | June |
Cheapest in | February |
Average price | $1,319 |
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 2, 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 8/26
6:30 pm-11:15 am
1 stop11h 45m
London Heathrow
Wed 9/2
12:00 pm-9:31 pm
1 stop14h 31m
$893
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 8/26
2:34 pm-10:30 am
2 stops14h 56m
London Heathrow
Wed 9/2
9:55 am-10:08 pm
2 stops17h 13m
$910
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/29
11:17 am-11:20 am
1 stop19h 03m
London Heathrow
Tue 8/11
6:30 am-5:00 pm
2 stops15h 30m
$1,049
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/29
11:17 am-7:15 am
1 stop14h 58m
London Heathrow
Wed 8/5
8:40 am-7:11 pm
2 stops15h 31m
$1,050
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sat 8/8
12:20 pm-6:30 am
2 stops37h 10m
London Heathrow
Sun 8/16
7:25 am-8:36 pm
2 stops18h 11m
$1,076
Quickest round-trip
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Thu 8/20
1:56 pm-6:55 am
1 stop11h 59m
London Heathrow
Sun 9/13
12:15 pm-7:05 pm
1 stop11h 50m
$1,094
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sat 7/4
12:20 pm-6:30 am
2 stops37h 10m
London Heathrow
Wed 7/15
7:30 am-6:56 pm
2 stops16h 26m
$1,114
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 7/5
3:41 pm-11:35 am
1 stop14h 54m
London Heathrow
Wed 7/15
8:00 am-5:03 pm
1 stop14h 03m
$1,120
Cheapest one-way
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Tue 9/22
5:59 pm-12:50 pm
1 stop13h 51m
$326
Quickest one-way
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 10/18
3:31 pm-7:40 am
1 stop11h 09m
$326
Showing 1-10 of 20 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
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 $1,319). 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 2, 2026.
See what other customers who have flown with Delta,KLM, 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
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Overall
7.9
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
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Stansted
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Heathrow flight routes
Other flight options
Other flights from Louisville
Popular flights
Alternative routes for Louisville to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Heathrow by adding a car rental and/or hotel reservation to your travel itinerary.
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 June 2, 2026.
Louisville and Heathrow flights
Browse other Louisville and Heathrow flight options. Last updated on June 2, 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 June 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 2, 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$855 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$589 | Average$959 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$655 | Average$1,064 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$678 | Average$1,091 | FlexibilityNo cancel fee | On-time69% |