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Cheap flights from Louisville to London from $291

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to London departing on 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Louisville to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
5:45 pm - 5:40 pmSDF-LHR
18h 55m2 stops
Scandinavian Airlines Logo
6:40 am - 11:56 pmLHR-SDF
22h 16m2 stops
$579Scandinavian Airlines
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Sat, Jan 31 - Mon, Feb 9
Delta Logo
12:57 pm - 9:00 amSDF-LHR
15h 03m1 stop
Delta Logo
11:30 am - 12:06 amLHR-SDF
17h 36m2 stops
$592Delta
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Tue, Nov 11 - Tue, Nov 18
Virgin Atlantic Logo
2:59 pm - 7:50 amSDF-LHR
11h 51m1 stop
Virgin Atlantic Logo
11:45 am - 9:45 pmLHR-SDF
15h 00m2 stops
$601Virgin Atlantic
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Tue, Feb 10 - Tue, Feb 17
Virgin Atlantic Logo
12:40 pm - 6:55 amSDF-LHR
13h 15m2 stops
Virgin Atlantic Logo
6:30 am - 4:52 pmLHR-SDF
15h 22m2 stops
$606Virgin Atlantic
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Wed, Feb 11 - Fri, Feb 20
American Airlines Logo
6:00 am - 7:30 amSDF-LGW
20h 30m2 stops
American Airlines Logo
11:20 am - 10:38 amLGW-SDF
28h 18m2 stops
$620American Airlines
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Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
8:10 am - 7:30 amSDF-LGW
18h 20m2 stops
American Airlines Logo
11:20 am - 11:54 pmLGW-SDF
17h 34m2 stops
$637American Airlines
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Fri, Nov 28 - Fri, Dec 5
United Airlines Logo
2:35 pm - 6:40 amSDF-LHR
11h 05m1 stop
United Airlines Logo
6:50 am - 10:29 pmLHR-SDF
20h 39m2 stops
$645United Airlines
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Fri, Nov 28 - Fri, Dec 5
United Airlines Logo
1:40 pm - 6:20 amSDF-LHR
11h 40m1 stop
United Airlines Logo
6:50 am - 5:37 pmLHR-SDF
15h 47m2 stops
$653United Airlines
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Sun, Feb 1 - Sun, Feb 8
British Airways Logo
7:09 pm - 10:25 amSDF-LHR
10h 16m1 stop
British Airways Logo
7:40 pm - 6:39 pmLHR-SDF
27h 59m2 stops
$660British Airways
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Sun, Feb 1 - Mon, Feb 9
British Airways Logo
3:33 pm - 7:20 amSDF-LHR
10h 47m1 stop
British Airways Logo
2:45 pm - 10:12 pmLHR-SDF
12h 27m1 stop
$673British Airways
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Mon, Feb 2 - Wed, Feb 11

Virgin Atlantic flights from Louisville to London

Our best Virgin Atlantic deals on Louisville to London flight tickets
Virgin Atlantic
Feb 10
SDF2:59 pmLouisville Intl
11h 51m
1 stop
LHR7:50 amLondon Heathrow
Feb 17
LHR11:45 amLondon Heathrow
15h 00m
2 stops
SDF9:45 pmLouisville Intl
$601
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Virgin Atlantic
Feb 11
SDF12:40 pmLouisville Intl
13h 15m
2 stops
LHR6:55 amLondon Heathrow
Feb 20
LHR6:30 amLondon Heathrow
15h 22m
2 stops
SDF4:52 pmLouisville Intl
$606
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Virgin Atlantic
Nov 28
SDF6:35 amLouisville Intl
19h 30m
1 stop
LHR7:05 amLondon Heathrow
Dec 5
LHR6:30 amLondon Heathrow
15h 46m
2 stops
SDF5:16 pmLouisville Intl
$609
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KLM flights from Louisville to London

Our best KLM deals on Louisville to London flight tickets
KLM
Nov 11
SDF6:16 pmLouisville Intl
12h 24m
1 stop
LHR11:40 amLondon Heathrow
Nov 18
LHR8:55 amLondon Heathrow
13h 21m
1 stop
SDF5:16 pmLouisville Intl
$600
Find similar
KLM
Feb 11
SDF2:59 pmLouisville Intl
11h 51m
1 stop
LHR7:50 amLondon Heathrow
Feb 20
LHR3:50 pmLondon Heathrow
13h 06m
1 stop
SDF11:56 pmLouisville Intl
$608
Find similar
KLM
Oct 23
SDF12:54 pmLouisville Intl
12h 51m
1 stop
LHR6:45 amLondon Heathrow
Oct 28
LHR12:30 pmLondon Heathrow
14h 04m
1 stop
SDF10:34 pmLouisville Intl
$650
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momondo Fare Finder

 
Customize your flight search to find flights from Louisville to London 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, momondo users made 832,500 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Louisville to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 1/31

5:45 pm-5:40 pm

2 stops18h 55m

London Heathrow

Mon 2/9

6:40 am-11:56 pm

2 stops22h 16m

$579

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 11/11

12:57 pm-9:00 am

1 stop15h 03m

London Heathrow

Tue 11/18

11:30 am-12:06 am

2 stops17h 36m

$592

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 2/10

2:59 pm-7:50 am

1 stop11h 51m

London Heathrow

Tue 2/17

11:45 am-9:45 pm

2 stops15h 00m

$601

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/11

12:40 pm-6:55 am

2 stops13h 15m

London Heathrow

Fri 2/20

6:30 am-4:52 pm

2 stops15h 22m

$606

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Tue 2/3

6:00 am-7:30 am

2 stops20h 30m

London Gatwick

Tue 2/10

11:20 am-10:38 am

2 stops28h 18m

$620

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Fri 11/28

8:10 am-7:30 am

2 stops18h 20m

London Gatwick

Fri 12/5

11:20 am-11:54 pm

2 stops17h 34m

$637

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 11/28

2:35 pm-6:40 am

1 stop11h 05m

London Heathrow

Fri 12/5

6:50 am-10:29 pm

2 stops20h 39m

$645

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 2/1

1:40 pm-6:20 am

1 stop11h 40m

London Heathrow

Sun 2/8

6:50 am-5:37 pm

2 stops15h 47m

$653

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 2/1

7:09 pm-10:25 am

1 stop10h 16m

London Heathrow

Mon 2/9

7:40 pm-6:39 pm

2 stops27h 59m

$660

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 2/2

3:33 pm-7:20 am

1 stop10h 47m

London Heathrow

Wed 2/11

2:45 pm-10:12 pm

1 stop12h 27m

$673

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Louisville to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Louisville and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Louisville is in August. Flight prices, which tend to average around $702, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Louisville averaging around $748.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Louisville to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $749. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $949. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

What is the cheapest time of day to depart on your flight to London?

Flying to London from Louisville in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $780 when looking at flights departing in the afternoon. Flights to London are more costly at noon, with an average ticket price of $895. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,000 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Louisville for as low as $833 on momondo.

Can stopping save me money on Louisville to London flights?

You could potentially save up to 6% on your flight if you consider stops on a Louisville to London flight.

When to book flights from Louisville to London

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to London (SDF to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to London

Direct flights

None
There are no direct flights from Louisville to London. There are no popular flight routes from Louisville to London.
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  • How far is Louisville Intl to London by plane?

    The straight-line distance from Louisville Intl to London is 4042.6 mi. In terms of flight time, this usually takes a little over 10h 07m.

  • When did momondo last update prices for flights from Louisville Intl Airport to London?

    Prices for flights from Louisville Intl Airport to London refresh daily.

  • How many operators does momondo search for flights from Louisville Intl Airport to London?

  • How old do you have to be to fly from Louisville Intl Airport to London?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to London.

  • What documentation or ID do you need to fly to London?

    The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to London?

Best airlines flying from Louisville to London

Compare and see reviews for airlines that fly from Louisville to London with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $574Free CancellationRating
7.7
1,402 reviews
Search KLM flights
Virgin AtlanticPriceFrom $580Free CancellationRating
7.4
667 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $598Free CancellationRating
6.7
7,454 reviews
Search British Airways flights
American AirlinesPriceFrom $665Free CancellationRating
7.2
11,039 reviews
Search American Airlines flights
United AirlinesPriceFrom $684Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
DeltaPriceFrom $690Free CancellationRating
7.9
7,972 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Guildford
Dartford
Hayes
Crawley
Chelmsford
Brentwood
Colchester
Ilford
Folkestone
Romford
Cobham
Stansted
Watford
Richmond

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to London for you.

Can I find flights from Louisville to London with flexible booking policies on momondo?

Yes. All flights to London from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Louisville to London?

Once all potential Louisville to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Louisville to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Louisville and alert you when they change.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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1 adult
Thu 11/13
Thu 11/20
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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport