SDF - LHR

£244 Find Cheap Flights from Louisville to London Heathrow Airport – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£586
Typical prices: £567-£916
United Airlines
Fri 2/3Mon 5/3
SDF - LHR • 2 stops
Cheapest one-way flight
£244
Typical prices: £281-£416
Iberia
Thu 1/3
SDF - LHR • 1 stop
Direct flights
Not available
There are currently no direct flights between Louisville and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
10 weeks
in advance
Our data shows that travellers who book at least 10 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 29% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Philadelphia (PHL)
Cheapest • Avg £618 (return)
Detroit Metropolitan Wayne County (DTW)
Shortest trip • 11h 42m (one-way)
Insights
Insights
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We hope you enjoy your trip to London Heathrow Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Louisville to Heathrow (SDF-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Louisville to Heathrow

Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
13:00 - 07:10SDF  Louisville Intl-LHR London Heathrow
37h 10m2 stops Newark Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
06:50 - 17:30LHR  London Heathrow-SDF Louisville Intl
15h 40m2 stops Brussels Bruxelles-National Newark
£586United Airlines
Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
15:50 - 07:40SDF  Louisville Intl-LHR London Heathrow
34h 50m1 stop Houston George Bush Intcntl
United Airlines Logo
06:50 - 16:54LHR  London Heathrow-SDF Louisville Intl
15h 04m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
£587United Airlines
Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
15:50 - 07:40SDF  Louisville Intl-LHR London Heathrow
34h 50m1 stop Houston George Bush Intcntl
United Airlines Logo
06:50 - 19:34LHR  London Heathrow-SDF Louisville Intl
17h 44m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl
£587United Airlines
Tue, 3 Nov - Tue, 10 Nov
Delta Logo
13:20 - 06:50SDF  Louisville Intl-LHR London Heathrow
12h 30m1 stop Boston Logan Intl
Delta Logo
08:40 - 21:13LHR  London Heathrow-SDF Louisville Intl
17h 33m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County
£588Delta
Tue, 20 Oct - Fri, 30 Oct
Delta Logo
13:59 - 07:15SDF  Louisville Intl-LHR London Heathrow
12h 16m1 stop Atlanta Hartsfield-Jackson
Delta Logo
06:30 - 19:10LHR  London Heathrow-SDF Louisville Intl
16h 40m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
£588Delta
Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
14:20 - 07:10SDF  Louisville Intl-LHR London Heathrow
35h 50m2 stops Washington, D.C. Dulles Intl Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
06:50 - 20:14LHR  London Heathrow-SDF Louisville Intl
18h 24m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
£590United Airlines
Sun, 31 Jan - Tue, 16 Feb
British Airways Logo
17:20 - 09:15SDF  Louisville Intl-LHR London Heathrow
10h 55m1 stop Boston Logan Intl
British Airways Logo
07:30 - 21:53LHR  London Heathrow-SDF Louisville Intl
19h 23m2 stops Madrid Barajas Charlotte Douglas
£650British Airways
Tue, 2 Feb - Tue, 16 Feb
British Airways Logo
17:46 - 09:15SDF  Louisville Intl-LHR London Heathrow
10h 29m1 stop Charlotte Douglas
British Airways Logo
06:05 - 21:53LHR  London Heathrow-SDF Louisville Intl
20h 48m2 stops Madrid Barajas Charlotte Douglas
£650British Airways
Mon, 1 Feb - Tue, 16 Feb
British Airways Logo
17:46 - 09:15SDF  Louisville Intl-LHR London Heathrow
10h 29m1 stop Charlotte Douglas
British Airways Logo
06:05 - 21:53LHR  London Heathrow-SDF Louisville Intl
20h 48m2 stops Madrid Barajas Charlotte Douglas
£650British Airways
Mon, 16 Nov - Tue, 24 Nov
British Airways Logo
13:14 - 06:55SDF  Louisville Intl-LHR London Heathrow
12h 41m1 stop Chicago O'Hare Intl
British Airways Logo
17:25 - 21:37LHR  London Heathrow-SDF Louisville Intl
33h 12m2 stops Madrid Barajas Chicago O'Hare Intl
£651British Airways
Booking Insights

Price, demand, and travel trends for Louisville to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Louisville to London Heathrow Airport with more confidence.

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

Return flights from Louisville to London Heathrow Airport start at £586. Prices are typical for this route right now, with typical return fares ranging from £567 to £916. The lowest price found in the past 5 days was £586 on United Airlines.

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

Tuesday is the cheapest day of the week to fly from Louisville to London Heathrow Airport and is 7% cheaper than the average day. Sunday is the most expensive day with flight prices 13% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • November is the cheapest month to fly from Louisville to London Heathrow Airport at £538 return.
  • July (£996) and June (£956) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 85% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Louisville to London Heathrow Airport the cheapest?

Flights from Louisville to London Heathrow Airport are cheapest 10 weeks before departure. Booking in this window typically costs about 28% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Louisville to London Heathrow Airport flights

Low season

December

Cheapest flight

£244
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flights 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

Your Louisville to London Heathrow Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from Louisville to London Heathrow Airport?

    Flights from Louisville to London Heathrow Airport usually depart from Louisville Intl (SDF) and arrive at London Heathrow (LHR).

  • Which cabin classes can I book on flights from Louisville to London Heathrow Airport?

    Two cabin classes are available on flights from Louisville to London Heathrow Airport:

    • Economy class
    • Premium Economy Class

  • Which airports do connecting flights from Louisville to London Heathrow Airport pass through?

    One-stop flights from Louisville to London Heathrow Airport most commonly connect through:

    • Atlanta Hartsfield-Jackson (ATL) – 31% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 28% of one-stop connections
    • Charlotte Douglas (CLT) – 23% of one-stop connections
    • Washington, D.C. Dulles Intl (IAD) – 6% of one-stop connections

    Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Louisville to London Heathrow Airport?

    Yes. Being flexible with your travel dates can save you up to 18% on the Louisville to London Heathrow Airport route. Tuesday is the cheapest departure day at £708 return on average, while Sunday is the most expensive at £854, a difference of £146. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are London Victoria Station, London Euston Railway Station, and Hyde Park. These are among the most viewed places in London Heathrow Airport on KAYAK.

  • How expensive are last-minute Louisville to London Heathrow Airport flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 6% above the route average of £755. Book 10 weeks before departure for the lowest fares.

  • How long is a flight from Louisville to London Heathrow Airport?

    A direct flight from Louisville to London Heathrow Airport takes 0h 00m, covering 4,033 miles.

  • Do I need a passport to fly from Louisville to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Louisville to London Heathrow Airport looking right now?

    One-way fares from Louisville to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about £301, which is 12% below the typical average for this route.

  • How much time can I save by choosing a different stopover airport from Louisville to London Heathrow Airport?

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time of 11h 42m, compared to 11h 46m via Philadelphia (PHL) and 11h 55m via Washington, D.C. Dulles Intl (IAD).

  • What is the time difference between Louisville and London Heathrow Airport?

    London Heathrow Airport is 5 hours ahead of Louisville (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which car hire options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around £5 for economy cars. Top options include:
    · GREEN MOTION
    · DRIVALIA
    · Europcar
    · Alamo
    · Hertz

  • How much should I expect to pay for a Louisville to London Heathrow Airport flight?

    Return flights from Louisville to London Heathrow Airport range from £567 to £916, with an average of £755 over the past 12 months. Anything below £567 counts as a good deal.

Your guide to booking Louisville to London Heathrow Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average £708 – about £146 less than Sunday (17% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 10 weeks before you fly. On this route, that window historically saves about 28% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Louisville to London Heathrow Airport trip for November. Fares historically average £538 return in that month – typically £458 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.
    - Hilton London Heathrow Airport

More options for your flight from Louisville to Heathrow

Complete your trip to London with a hotel stay or car hire

Car hire in London
Hotels in London
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