SDF - LHR

£237 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 5/11. 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

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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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

Mon, 22 Sep - Wed, 1 Oct
United Airlines Logo
19:36 - 06:20SDF-LHR
29h 44m1 stop
United Airlines Logo
14:05 - 17:13LHR-SDF
32h 08m2 stops
£463United Airlines
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Tue, 2 Sep - Thu, 11 Sep
Delta Logo
16:20 - 08:05SDF-LHR
10h 45m1 stop
Delta Logo
11:30 - 22:46LHR-SDF
16h 16m2 stops
£466Delta
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Tue, 9 Sep - Thu, 4 Dec
Delta Logo
08:10 - 07:15SDF-LHR
18h 05m1 stop
Delta Logo
08:40 - 20:51LHR-SDF
17h 11m2 stops
£467Delta
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Wed, 29 Oct - Fri, 7 Nov
Air Canada Logo
11:00 - 07:10SDF-LHR
16h 10m2 stops
Air Canada Logo
18:00 - 17:16LHR-SDF
28h 16m2 stops
£468Air Canada
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Tue, 14 Oct - Thu, 23 Oct
 Logo
17:58 - 11:10SDF-LHR
12h 12m1 stop
 Logo
13:05 - 20:43LHR-SDF
12h 38m1 stop
Wed, 10 Sep - Mon, 15 Sep
 Logo
09:55 - 08:35SDF-LHR
17h 40m2 stops
 Logo
19:30 - 21:02LHR-SDF
30h 32m2 stops
Sun, 28 Sep - Sun, 5 Oct
Lufthansa Logo
17:48 - 11:45SDF-LHR
12h 57m1 stop
Lufthansa Logo
12:15 - 20:48LHR-SDF
13h 33m1 stop
£483Lufthansa
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Mon, 20 Oct - Thu, 30 Oct
Air Canada Logo
10:55 - 08:35SDF-LHR
16h 40m2 stops
Air Canada Logo
11:10 - 22:29LHR-SDF
15h 19m2 stops
£490Air Canada
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Mon, 22 Sep - Wed, 1 Oct
American Airlines Logo
19:09 - 12:30SDF-LHR
12h 21m1 stop
American Airlines Logo
13:10 - 23:03LHR-SDF
14h 53m1 stop
£512American Airlines
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Sun, 28 Sep - Sun, 5 Oct
Lufthansa Logo
19:20 - 11:45SDF-LHR
11h 25m1 stop
Lufthansa Logo
12:15 - 22:30LHR-SDF
15h 15m2 stops
£530Lufthansa
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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.

How much is a return flight from Louisville to London Heathrow Airport?

What’s the cheapest day of the week to fly from Louisville to London Heathrow Airport?

The average price of all round-trip flights from Louisville to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Louisville to London Heathrow Airport, look for departures on Sundays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from London Heathrow Airport, Tuesday is the cheapest day to fly and Friday is the most expensive.

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 £546 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is £1,132 and £875 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 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

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

Low seasonFebruary
Cheapest flight£237
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (20% 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 £321 for a one-way ticket and £628 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.

  • Which airline alliances offer flights from Louisville to London Heathrow Airport?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Louisville and London Heathrow Airport, with Star Alliance being the most commonly used for this 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.

Reviews of the top airlines flying from Louisville to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Louisville to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Louisville to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Virgin AtlanticOverall score based on 657 reviews
7.5Entertainment
8.1Crew
7.3Comfort
7.7Boarding
6.9Food
Airline reviews

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

10.0 ExcellentSiten, Aug 2025LHR - JFK
Read more Virgin Atlantic reviews

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Crew was great and responsive. Entertainment quit working with about 4 hours remaining on the flight. My seat cushion was broken.

Not very good , the stewardess were unfriendly and they don't like to be bothered. Cos was a night flight and they need to sleep.

British Airways staff are very polite and willing to help.

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

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