$305+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
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.Cheapflights Tip: The best prices from Louisville Intl to London Heathrow are usually found in February or September, booked 64 days in advance, depart on a Wednesday or Monday and return on a Tuesday
Cheap 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 12, 2025.
Round-trip from | $640 (Booking.com) |
|---|---|
One-way from | $305 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,485 |
Find flight deals from Louisville to Heathrow
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 12, 2025.
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 12, 2025.
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Netflights deal was found by Cheapflights users on 6/11. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/10. 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.
This Iberia deal was found by Cheapflights users on 6/11. 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.
This lol.travel deal was found by Cheapflights users on 6/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/9. 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.
This KLM deal was found by Cheapflights users on 6/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 6/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
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 12, 2025.
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
Price
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/30
7:00 am-10:00 am
2 stops22h 00m
London Heathrow
Fri 10/3
2:05 pm-12:18 pm
2 stops27h 13m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/30
3:21 pm-7:15 am
1 stop10h 54m
London Heathrow
Fri 10/3
9:20 am-4:50 pm
1 stop12h 30m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Wed 7/30
2:10 pm-6:20 am
1 stop11h 10m
London Heathrow
Fri 10/3
2:05 pm-1:21 pm
2 stops28h 16m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 8/3
6:50 pm-12:15 pm
1 stop12h 25m
London Heathrow
Tue 8/19
10:30 am-8:02 pm
1 stop14h 32m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Tue 9/2
10:45 am-1:30 pm
1 stop21h 45m
London Heathrow
Thu 9/11
11:30 am-10:30 pm
2 stops16h 00m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 8/3
7:41 pm-1:10 pm
1 stop12h 29m
London Heathrow
Tue 8/19
11:45 am-6:30 pm
1 stop11h 45m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Tue 7/22
2:33 pm-9:05 am
1 stop13h 32m
London Heathrow
Tue 7/29
8:20 am-7:50 pm
1 stop16h 30m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Thu 8/14
12:50 pm-4:00 pm
2 stops22h 10m
London Heathrow
Tue 8/19
5:00 pm-9:14 pm
2 stops33h 14m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 8/24
2:56 pm-8:55 am
1 stop12h 59m
London Heathrow
Sun 8/31
1:05 pm-11:56 pm
1 stop15h 51m
LouisvilleLondon
SDF - LHR
SDFLHR
Louisville Intl
Sun 7/20
3:32 pm-7:40 am
1 stop11h 08m
London Heathrow
Sat 8/2
8:55 am-5:56 pm
1 stop14h 01m
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.
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 June 9, 2025.
To ensure you get the cheapest price possible for a flight from Louisville to London Heathrow Airport, you should look to book at least 64 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, November is the cheapest month in which you can book a flight from Louisville to London Heathrow Airport (average of $661). Flying from Louisville to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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.
What is the cheapest time of day to fly from SDF to LHR?
Find hourly flight availability from Louisville to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
A simple way to save on the total cost of your ticket is to fly from Louisville to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.
What is the cheapest day to fly from Louisville to London Heathrow Airport?
Use this chart to determine the cheapest time to fly round-trip from Louisville to Heathrow. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Louisville to London Heathrow Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in Heathrow by month
Plan your trip to Heathrow by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.
Temperature in Heathrow by month
Plan your trip to Heathrow by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
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 12, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Louisville to London to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Kim,May 2025
PIH - SLC
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.
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Alternative routes for Louisville to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$619 | Average$796 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$692 | Average$953 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$713 | Average$1,034 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$734 | Average$996 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$776 | Average$1,242 | FlexibilityNo cancel fee | On-time72% |