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Cheap flights from Louisville to London from £311

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 2/4. 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 return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
16:50 - 14:25
SDF
-
LHR
16h 35m
1 stop
Multiple Airlines Logo
07:50 - 23:01
LHR
-
SDF
20h 11m
2 stops
£501Multiple Airlines
Mon, 17 Aug - Tue, 25 Aug
British Airways Logo
16:50 - 10:55
SDF
-
LHR
13h 05m
1 stop
British Airways Logo
09:15 - 19:36
LHR
-
SDF
15h 21m
1 stop
£505British Airways
Wed, 26 Aug - Wed, 2 Sep
British Airways Logo
12:15 - 10:55
SDF
-
LHR
17h 40m
1 stop
British Airways Logo
10:05 - 22:44
LHR
-
SDF
17h 39m
1 stop
£516British Airways
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
16:50 - 10:55
SDF
-
LHR
13h 05m
1 stop
Multiple Airlines Logo
06:15 - 23:01
LHR
-
SDF
21h 46m
2 stops
£517Multiple Airlines
Wed, 26 Aug - Wed, 2 Sep
Lufthansa Logo
19:32 - 17:40
SDF
-
LHR
17h 08m
2 stops
Lufthansa Logo
13:30 - 00:05
LHR
-
SDF
15h 35m
2 stops
£521Lufthansa
Mon, 17 Aug - Tue, 25 Aug
Lufthansa Logo
19:43 - 16:40
SDF
-
LHR
15h 57m
2 stops
Lufthansa Logo
09:00 - 22:22
LHR
-
SDF
18h 22m
2 stops
£528Lufthansa
Wed, 26 Aug - Wed, 2 Sep
KLM Logo
17:48 - 13:15
SDF
-
LHR
14h 27m
1 stop
KLM Logo
11:45 - 23:59
LHR
-
SDF
17h 14m
2 stops
£532KLM
Wed, 15 Apr - Wed, 22 Apr
Virgin Atlantic Logo
15:10 - 07:10
SDF
-
LHR
11h 00m
1 stop
Virgin Atlantic Logo
10:45 - 17:27
LHR
-
SDF
11h 42m
1 stop
£538Virgin Atlantic
Wed, 15 Apr - Wed, 22 Apr
Iberia Logo
11:17 - 07:40
SDF
-
LHR
15h 23m
1 stop
Iberia Logo
06:15 - 21:30
LHR
-
SDF
20h 15m
2 stops
£539Iberia
Wed, 22 Apr - Wed, 6 May
Iberia Logo
11:17 - 10:50
SDF
-
LGW
18h 33m
2 stops
Iberia Logo
20:40 - 18:40
LGW
-
SDF
27h 00m
2 stops
£735Iberia
Sun, 10 May - Tue, 26 May

Delta flights from Louisville to London

Our best Delta deals on Louisville to London flight tickets
Delta
15 Apr
SDF13:00Louisville Intl
12h 25m
1 stop
LHR06:25London Heathrow
22 Apr
LHR06:30London Heathrow
17h 14m
2 stops
SDF18:44Louisville Intl
£542
Delta
6 May
SDF15:16Louisville Intl
14h 04m
2 stops
LHR10:20London Heathrow
13 May
LHR06:30London Heathrow
17h 40m
2 stops
SDF19:10Louisville Intl
£546
Delta
20 Apr
SDF13:00Louisville Intl
13h 15m
1 stop
LHR07:15London Heathrow
28 Apr
LHR12:25London Heathrow
15h 23m
1 stop
SDF22:48Louisville Intl
£564

United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets
United Airlines
7 Mar
SDF17:45Louisville Intl
31h 10m
1 stop
LHR05:55London Heathrow
26 Mar
LHR13:25London Heathrow
29h 22m
2 stops
SDF14:47Louisville Intl
£541
United Airlines
20 Apr
SDF13:55Louisville Intl
11h 50m
1 stop
LHR06:45London Heathrow
30 Apr
LHR14:05London Heathrow
29h 49m
2 stops
SDF14:54Louisville Intl
£549
United Airlines
4 May
SDF14:55Louisville Intl
10h 50m
1 stop
LHR06:45London Heathrow
11 May
LHR17:50London Heathrow
30h 52m
2 stops
SDF19:42Louisville Intl
£552

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 2 March 2026.
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

Mon 17/8

16:50-14:25

1 stop16h 35m

London Heathrow

Tue 25/8

07:50-23:01

2 stops20h 11m

£501

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 26/8

16:50-10:55

1 stop13h 05m

London Heathrow

Wed 2/9

09:15-19:36

1 stop15h 21m

£505

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 26/8

12:15-10:55

1 stop17h 40m

London Heathrow

Wed 2/9

10:05-22:44

1 stop17h 39m

£516

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 26/8

16:50-10:55

1 stop13h 05m

London Heathrow

Wed 2/9

06:15-23:01

2 stops21h 46m

£517

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 17/8

19:32-17:40

2 stops17h 08m

London Heathrow

Tue 25/8

13:30-00:05

2 stops15h 35m

£521

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 26/8

19:43-16:40

2 stops15h 57m

London Heathrow

Wed 2/9

09:00-22:22

2 stops18h 22m

£528

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 15/4

17:48-13:15

1 stop14h 27m

London Heathrow

Wed 22/4

11:45-23:59

2 stops17h 14m

£532

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 15/4

15:10-07:10

1 stop11h 00m

London Heathrow

Wed 22/4

10:45-17:27

1 stop11h 42m

£538

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 22/4

11:17-07:40

1 stop15h 23m

London Heathrow

Wed 6/5

06:15-21:30

2 stops20h 15m

£539

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Sun 10/5

11:17-10:50

2 stops18h 33m

London Gatwick

Tue 26/5

20:40-18:40

2 stops27h 00m

£735

Flights are sorted by cheapest return 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 October. Flight prices, which tend to average around £516, are often lower during this time because this is during the off-season. The month of August is another great option to travel to London, with average flight prices from Louisville averaging around £524.

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 £663 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Louisville for as low as £510 on momondo.

How have Louisville to London flight prices changed over time?

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 return 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

Fastest flight time

10h 18m

Direct flights

None
The fastest flight from Louisville to London takes 10h 18m
There are no direct flights from Louisville to London. There are no popular flight routes from Louisville to London.
Search flight deals

  • How far is Louisville Intl to London by plane?

    There are 4042.6 mi between Louisville Intl and London. By plane, this route typically takes 10h 18m.

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

    Prices for flights from Louisville Intl Airport to London are updated daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 travel and health documents you'll need for your trip to London may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Southend-on-Sea
Canterbury
Ipswich
Ilford
Wembley
Guildford
Chelmsford
Hayes
Dover
Folkestone
Worthing
Colchester
Bedford
Ramsgate

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Louisville.

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

momondo does allow users to show only those flights to London from Louisville which offer a flexible booking policy as well as other useful filters and features.

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?

Yes momondo offers price alerts on flights to London from Louisville. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London trip

We make it super easy to schedule, organise 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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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