SDF - LHR

£231 Find Cheap Flights from Louisville to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Heathrow departing on 25/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Louisville to London, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest return fare
£456
Overall average: £457
Lufthansa
Tue 24/2Tue 3/3
SDF - LHR • 2 stops
Cheapest one-way flight
£231
Typical prices: £405-£408
Aer Lingus
Wed 25/3
SDF - LHR • 2 stops
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 53% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 30% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Louisville to Heathrow (SDF-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Louisville to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Louisville to Heathrow

Tue, 24 Feb - Tue, 3 Mar
Lufthansa Logo
14:35 - 12:50
SDF
-
LHR
17h 15m
2 stops
Lufthansa Logo
08:30 - 23:59
LHR
-
SDF
20h 29m
2 stops
£456Lufthansa
Tue, 24 Feb - Tue, 3 Mar
United Airlines Logo
14:05 - 05:55
SDF
-
LHR
10h 50m
1 stop
United Airlines Logo
06:50 - 22:13
LHR
-
SDF
20h 23m
2 stops
£457United Airlines
Wed, 1 Apr - Wed, 15 Apr
Multiple Airlines Logo
08:47 - 06:30
SDF
-
LHR
16h 43m
2 stops
Multiple Airlines Logo
10:50 - 22:30
LHR
-
SDF
16h 40m
2 stops
£467Multiple Airlines
Wed, 1 Apr - Wed, 15 Apr
Delta Logo
13:56 - 06:45
SDF
-
LHR
11h 49m
1 stop
Delta Logo
06:30 - 16:01
LHR
-
SDF
14h 31m
2 stops
£468Delta
Wed, 8 Apr - Mon, 13 Apr
British Airways Logo
16:27 - 12:50
SDF
-
LHR
15h 23m
1 stop
British Airways Logo
19:25 - 21:28
LHR
-
SDF
31h 03m
2 stops
£469British Airways
Wed, 1 Apr - Wed, 15 Apr
United Airlines Logo
13:55 - 08:30
SDF
-
LHR
13h 35m
1 stop
United Airlines Logo
06:50 - 16:41
LHR
-
SDF
14h 51m
2 stops
£470United Airlines
Wed, 1 Apr - Wed, 15 Apr
Delta Logo
17:55 - 13:05
SDF
-
LHR
14h 10m
2 stops
Delta Logo
06:30 - 16:01
LHR
-
SDF
14h 31m
2 stops
£473Delta
Wed, 1 Apr - Thu, 9 Apr
Air Canada Logo
07:20 - 08:35
SDF
-
LHR
20h 15m
2 stops
Air Canada Logo
12:40 - 19:59
LHR
-
SDF
36h 19m
2 stops
£474Air Canada
Tue, 24 Feb - Tue, 3 Mar
British Airways Logo
16:59 - 09:15
SDF
-
LHR
11h 16m
1 stop
British Airways Logo
14:45 - 00:13
LHR
-
SDF
14h 28m
1 stop
£476British Airways
Wed, 1 Apr - Wed, 15 Apr
British Airways Logo
07:40 - 07:55
SDF
-
LHR
19h 15m
1 stop
British Airways Logo
14:45 - 23:27
LHR
-
SDF
13h 42m
1 stop
£487British Airways
Booking Insights

KAYAK's insights & trends for Louisville to Heathrow flights

Get data-powered insights and trends into flights from Louisville to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Louisville to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Louisville to London Heathrow Airport is February, where tickets cost £457 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is £1,114 and £868 respectively.

How far in advance should I book a flight from Louisville to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Louisville to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Louisville to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 53% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Find deals

Good to know - Cheap tickets from Louisville to London Heathrow Airport

Low seasonJanuary
Cheapest flight£231
Best time to beat the crowds (29% less expensive on average)
Most popular time to fly (33% more expensive on average)
Flight from Louisville to London Heathrow Airport

When to book flights from Louisville to Heathrow

Are your dates flexible? Find out the best times to travel from Louisville to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Louisville to London Heathrow Airport flights

  • What is the cheapest flight from Louisville to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Louisville to London Heathrow Airport was £231 for a one-way ticket and £456 for a return.

  • Which aircraft models fly most regularly from Louisville to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Louisville to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Louisville to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Louisville to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Louisville is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Louisville to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Louisville with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Louisville to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Louisville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Louisville to Heathrow

Information on your arrival and departure airports

Louisville (SDF)
Heathrow (LHR)