SDF - LON

£245 Find Cheap Flights from Louisville to London – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 34% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest return flight
£576
Typical prices: £641-£958
United Airlines
Fri 2/3Mon 5/3
SDF - LHR • 1 stop
Cheapest one-way flight
£245
Typical prices: £286-£450
British Airways
Sat 17/3
SDF - LHR • 1 stop
Direct flights
Not available
There are currently no direct flights between Louisville and London. You'll need to take a connecting flight to reach the destination.
Insights
Insights
Top routes
SDF - LGW
Cheapest • 6% average savings
SDF - LHR
Most popular
Insights
Insights
When to book
13 weeks
in advance
Our data shows that travellers who book at least 13 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 34% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Philadelphia (PHL)
Cheapest • Avg £650 (return)
Detroit Metropolitan Wayne County (DTW)
Shortest trip • 11h 42m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Louisville to London (SDF-LON)

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

Recent return flight deals from Louisville to London

Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
15:29 - 07:40SDF  Louisville Intl-LHR London Heathrow
35h 11m1 stop Houston George Bush Intcntl
United Airlines Logo
06:50 - 17:07LHR  London Heathrow-SDF Louisville Intl
15h 17m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
£576United Airlines
Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
15:29 - 07:40SDF  Louisville Intl-LHR London Heathrow
35h 11m1 stop Houston George Bush Intcntl
United Airlines Logo
06:50 - 17:07LHR  London Heathrow-SDF Louisville Intl
15h 17m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
£580United Airlines
Mon, 25 Jan - Tue, 2 Feb
Finnair Logo
12:05 - 06:50SDF  Louisville Intl-LHR London Heathrow
13h 45m1 stop Dallas/Fort Worth
Finnair Logo
08:20 - 20:34LHR  London Heathrow-SDF Louisville Intl
17h 14m1 stop Dallas/Fort Worth
£659Finnair
Mon, 5 Apr - Wed, 21 Apr
Lufthansa Logo
19:32 - 17:05SDF  Louisville Intl-LHR London Heathrow
16h 33m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Lufthansa Logo
09:30 - 19:34LHR  London Heathrow-SDF Louisville Intl
15h 04m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
£660Lufthansa
Tue, 23 Mar - Tue, 30 Mar
Multiple Airlines Logo
09:00 - 07:10SDF  Louisville Intl-LHR London Heathrow
18h 10m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
13:30 - 23:55LHR  London Heathrow-SDF Louisville Intl
15h 25m2 stops Frankfurt am Main Chicago O'Hare Intl
£660Multiple Airlines
Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
08:30 - 21:00SDF  Louisville Intl-LHR London Heathrow
31h 30m2 stops Chicago O'Hare Intl Ottawa
United Airlines Logo
06:50 - 20:14LHR  London Heathrow-SDF Louisville Intl
18h 24m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
£663United Airlines
Wed, 17 Mar - Wed, 31 Mar
Iberia Logo
13:14 - 10:25SDF  Louisville Intl-LHR London Heathrow
17h 11m1 stop Chicago O'Hare Intl
Iberia Logo
07:50 - 21:31LHR  London Heathrow-SDF Louisville Intl
18h 41m2 stops Madrid Barajas Chicago O'Hare Intl
£663Iberia
Sun, 21 Feb - Wed, 3 Mar
United Airlines Logo
06:00 - 06:20SDF  Louisville Intl-LHR London Heathrow
19h 20m1 stop Newark
United Airlines Logo
09:00 - 20:32LHR  London Heathrow-SDF Louisville Intl
16h 32m2 stops Zurich Chicago O'Hare Intl
£665United Airlines
Mon, 25 Jan - Tue, 2 Feb
Multiple Airlines Logo
10:20 - 07:10SDF  Louisville Intl-LHR London Heathrow
15h 50m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
09:30 - 19:30LHR  London Heathrow-SDF Louisville Intl
15h 00m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
£666Multiple Airlines
Tue, 2 Mar - Fri, 5 Mar
United Airlines Logo
08:30 - 21:00SDF  Louisville Intl-LHR London Heathrow
31h 30m2 stops Chicago O'Hare Intl Ottawa
United Airlines Logo
06:50 - 20:14LHR  London Heathrow-SDF Louisville Intl
18h 24m2 stops Brussels Bruxelles-National Chicago O'Hare Intl
£666United Airlines
Booking Insights

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

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

How much is a return flight from Louisville to London?

Return flights from Louisville to London typically range from £641 to £958. The lowest price found in the past 5 days was £576 on United Airlines.

What is the cheapest Louisville to London flight route?

Louisville (SDF) to London Gatwick Airport (LGW) is the cheapest Louisville to London route, averaging £729 return. Other Louisville to London routes average £826, based on KAYAK data over the past 12 months.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Louisville to London. It's 13% cheaper than the average day, while Sunday is the most expensive, with prices 8% higher.

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

•November is the cheapest month to fly from Louisville to London at £546 return.
•July (£981) and June (£972) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 79% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Louisville to London the cheapest?

Flights from Louisville to London are cheapest 13 weeks before departure. Booking in this window typically costs about 31% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Louisville to London flights

Low season

October

Cheapest flight

£245
Beat the crowds with an average 27% drop in traveller numbers.
The most popular month to fly with an average 28% increase in traveller numbers.
One-way flight from Louisville to London Heathrow Airport

When to book flights from Louisville to London

Are your dates flexible? Find out the best times to travel from Louisville to London 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 flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

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

    Only Economy class is available on flights from Louisville to London.

  • How long is a flight from Louisville to London?

    A direct flight from Louisville to London takes 00m, covering 4,045 miles.

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

    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 much should I expect to pay for a Louisville to London flight?

    Return flights from Louisville to London range from £641 to £958, with an average of £822 over the past 12 months. Anything below £641 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 12% above the £822 route average. Book 13 weeks before departure for the lowest fares.

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

    One-way fares from Louisville to London are currently lower than usual. Average one-way flight prices are about £296, which is 15% below the typical average for this route.

  • What car hire options are available in London?

    Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) – daily rates from around £5:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around £6:

    • GREEN MOTION
    • DRIVALIA
    • U-Save
    • Europcar
    • Alamo

    Near London City Airport (LCY) – daily rates from around £8:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Stansted Airport (STN) – daily rates from around £7:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

    Near London Luton Airport (LTN) – daily rates from around £8:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • U-Save

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

    Flights from Louisville to London usually depart from Louisville Intl (SDF) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

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

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

    • Atlanta Hartsfield-Jackson (ATL) – 28% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 27% of one-stop connections
    • Charlotte Douglas (CLT) – 26% of one-stop connections
    • Newark (EWR) – 6% of one-stop connections

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

    Yes. Flexible dates can save you up to 19% on flights from Louisville to London. Tuesday is the cheapest departure day at £721 return on average, while Sunday is the most expensive at £890, a difference of £169.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Philadelphia (PHL) gives the shortest average 1-stop total travel time of 11h 35m, compared to 11h 42m via Detroit Metropolitan Wayne County (DTW) and 11h 50m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Louisville and London?

    London is 4 hours ahead of Louisville (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London?

    Some of the most popular sights in London are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London on KAYAK.

  • Will I pay extra for pre-selecting a seat when flying from Louisville International Airport, Kentucky, to London?

    Virgin Atlantic allows you to select a seat from a seat map. Gold and Silver members can choose any standard seat when booking SDF-LHR flights without a charge. The seat assignment is usually done at check-in unless you're traveling in the Economy Light cabin, in which case you'll pay a small fee for pre-selection.

  • Will my child get a reduced ticket price from Louisville International Airport (SDF) to London?

    All children aged 0 to 23 months sit on adult laps throughout the flight. Older kids up to age 12 are charged less by KLM Airlines. So, when booking your flight through KAYAK, indicate your child's age to see an automatic fare reduction.

  • Are there airlines with fully flat beds on this route?

    The Business class cabin by British Airways has lie-flat seats. With a Club World ticket, you'll enjoy flying in a seat that extends into a flatbed (6 feet long). These seats have lumbar support and a fully adjustable headrest. You may request bedding for added comfort.

  • Can I travel to London with other animals besides cats and dogs?

    Always check the airline's pet policy before planning a trip with any animal. Iberia Airlines allows pets in the passenger cabin (18lb or less, including the cage), in the hold as extra baggage, or cargo compartment. You may bring a cat, dog, tortoise, fish, and bird accompanied by the correct documents. They, however, do not permit dangerous breeds and brachycephalic animals.

Your guide to booking Louisville to London 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 and avoid flying on Sunday. On this route, Tuesday flights average £721, about £169 less than Sunday fares (19% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 13 weeks before you fly. On this route, that window historically saves about 31% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Louisville to London trip for November. Fares historically average £546 return in that month – typically £435 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, hotels close to the airport you're flying into can be a convenient option.

    Near London City Airport

    • Good Hotel London
    • Aloft London Excel
    • Novotel London Excel

    Near London Heathrow Airport

    • Hilton London Heathrow Airport

    Near London Gatwick Airport

    • Premier Inn London Gatwick Airport
  • Most carriers operating flights from Louisville International Airport (SDF) to London Heathrow (LHR) have a single stopover. American Airlines stop at Boston Logan (BOS), O'Hare Intl Airport (ORD), or Charlotte Douglas Airport (CLT), while United connects via Dulles Airport (IAD). If you wish to land at London Gatwick (LGW), you might have two stopovers at Atlanta Airport (ATL) and John F. Kennedy Airport (JFK).
  • Suppose your physique prevents you from sitting in a single seat. You can get more personal space for better comfort while on the route SDF-IAD-FRA-LCY, often operated by Lufthansa. Consider reserving an empty adjacent seat with the airline. However, you can only pay the extra fee at the check-in counter on your departure date.
  • You only need a visa to fly to London if you plan to stay in the United Kingdom for over six months. You'll get a visa vignette or sticker on your passport at the airport's immigration office. To extend your business trip or vacation for another six months, complete the UK visa renewal form, pay the applicable fees, and book an appointment at any UKVCAS office for biometrics.
  • British Airways is one of the best airlines for wheelchair users. If you have a mobility issue, you can specify the type of assistance you need when booking your flight. Special assistance includes basic wheelchair assistance and full-service- luggage storage and retrieval, boarding and alighting the aircraft, and chair aid to move around the cabin.
  • Children through age 17 are automatically subject to unaccompanied minor protocols, and the standard unaccompanied minor fee is charged where applicable. With United Airlines, the service is available for kids between 5 and 14 and is optional for the age bracket 15-17. When booking tickets for kids traveling alone, inform the airline who will drop them off at SDF and pick them up from the arrival airport in London.

More options for your flight from Louisville to London

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

Car hire in London
Hotels in London
Holidays in London