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Cheap flights from Louisville to London from £246

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 1/9. 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.
Scandinavian Airlines Logo
15:24 - 17:40
SDF
-
LHR
21h 16m
2 stops
Scandinavian Airlines Logo
06:40 - 22:36
LHR
-
SDF
20h 56m
2 stops
£613Scandinavian Airlines
Mon, 7 Sep - Thu, 1 Oct
United Airlines Logo
05:35 - 10:00
SDF
-
LHR
23h 25m
2 stops
United Airlines Logo
07:25 - 19:09
LHR
-
SDF
16h 44m
2 stops
£627United Airlines
Tue, 29 Sep - Thu, 1 Oct
United Airlines Logo
19:32 - 09:00
SDF
-
LHR
32h 28m
1 stop
United Airlines Logo
08:45 - 22:09
LHR
-
SDF
18h 24m
2 stops
£631United Airlines
Sat, 26 Sep - Tue, 29 Sep
Iberia Logo
19:07 - 12:15
SDF
-
LHR
12h 08m
1 stop
Iberia Logo
06:15 - 22:58
LHR
-
SDF
21h 43m
2 stops
£644Iberia
Wed, 9 Sep - Tue, 22 Sep
British Airways Logo
19:07 - 11:15
SDF
-
LHR
11h 08m
1 stop
British Airways Logo
06:15 - 00:07
LHR
-
SDF
22h 52m
2 stops
£660British Airways
Wed, 9 Sep - Tue, 22 Sep
British Airways Logo
18:11 - 11:15
SDF
-
LHR
12h 04m
1 stop
British Airways Logo
11:30 - 10:47
LHR
-
SDF
28h 17m
2 stops
£661British Airways
Mon, 17 Aug - Tue, 25 Aug
Multiple Airlines Logo
14:43 - 06:50
SDF
-
LHR
11h 07m
1 stop
Multiple Airlines Logo
07:50 - 22:47
LHR
-
SDF
19h 57m
2 stops
£664Multiple Airlines
Mon, 17 Aug - Tue, 25 Aug
Multiple Airlines Logo
17:24 - 06:20
SDF
-
LGW
31h 56m
2 stops
Multiple Airlines Logo
14:00 - 17:29
LGW
-
SDF
32h 29m
1 stop
£717Multiple Airlines
Thu, 17 Sep - Thu, 1 Oct
Lufthansa Logo
10:05 - 08:40
SDF
-
LCY
17h 35m
2 stops
Lufthansa Logo
09:15 - 20:02
LCY
-
SDF
15h 47m
2 stops
£740Lufthansa
Mon, 17 Aug - Tue, 25 Aug
Lufthansa Logo
10:00 - 08:40
SDF
-
LCY
17h 40m
2 stops
Lufthansa Logo
09:15 - 00:05
LCY
-
SDF
19h 50m
2 stops
£741Lufthansa
Tue, 29 Sep - Thu, 1 Oct

United Airlines flights from Louisville to London

Our best United Airlines deals on Louisville to London flight tickets
United Airlines
29 Sept
SDF05:35Louisville Intl
23h 25m
2 stops
LHR10:00London Heathrow
1 Oct
LHR07:25London Heathrow
16h 44m
2 stops
SDF19:09Louisville Intl
£627
United Airlines
26 Sept
SDF19:32Louisville Intl
32h 28m
1 stop
LHR09:00London Heathrow
29 Sept
LHR08:45London Heathrow
18h 24m
2 stops
SDF22:09Louisville Intl
£631
United Airlines
12 May
SDF14:00Louisville Intl
14h 00m
1 stop
LHR09:00London Heathrow
19 May
LHR06:50London Heathrow
15h 10m
2 stops
SDF17:00Louisville Intl
£717

Scandinavian Airlines flights from Louisville to London

Our best Scandinavian Airlines deals on Louisville to London flight tickets
Scandinavian Airlines
7 Sept
SDF15:24Louisville Intl
21h 16m
2 stops
LHR17:40London Heathrow
1 Oct
LHR06:40London Heathrow
20h 56m
2 stops
SDF22:36Louisville Intl
£613
Scandinavian Airlines
18 Aug
SDF13:00Louisville Intl
24h 30m
2 stops
LHR18:30London Heathrow
4 Sept
LHR06:40London Heathrow
22h 19m
2 stops
SDF23:59Louisville Intl
£638
Scandinavian Airlines
26 Aug
SDF13:00Louisville Intl
15h 20m
2 stops
LHR09:20London Heathrow
2 Sept
LHR18:40London Heathrow
32h 56m
2 stops
SDF22:36Louisville Intl
£692

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 14 April 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

Cheapest return flight

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 7/9

15:24-17:40

2 stops21h 16m

London Heathrow

Thu 1/10

06:40-22:36

2 stops20h 56m

£613

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 29/9

05:35-10:00

2 stops23h 25m

London Heathrow

Thu 1/10

07:25-19:09

2 stops16h 44m

£627

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 26/9

19:32-09:00

1 stop32h 28m

London Heathrow

Tue 29/9

08:45-22:09

2 stops18h 24m

£631

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

19:07-12:15

1 stop12h 08m

London Heathrow

Tue 22/9

06:15-22:58

2 stops21h 43m

£644

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

19:07-11:15

1 stop11h 08m

London Heathrow

Tue 22/9

06:15-00:07

2 stops22h 52m

£660

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 17/8

18:11-11:15

1 stop12h 04m

London Heathrow

Tue 25/8

11:30-10:47

2 stops28h 17m

£661
Fastest return journey

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 17/8

14:43-06:50

1 stop11h 07m

London Heathrow

Tue 25/8

07:50-22:47

2 stops19h 57m

£664

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Thu 17/9

17:24-06:20

2 stops31h 56m

London Gatwick

Thu 1/10

14:00-17:29

1 stop32h 29m

£717

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 17/8

10:05-08:40

2 stops17h 35m

London City

Tue 25/8

09:15-20:02

2 stops15h 47m

£740

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Tue 29/9

10:00-08:40

2 stops17h 40m

London City

Thu 1/10

09:15-00:05

2 stops19h 50m

£741

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 £520, 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 £532.

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 £672 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 £561 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

9h 50m

Direct flights

None
The fastest flight from Louisville to London takes 9h 50m
There are no direct flights from Louisville to London. There are no popular flight routes from Louisville to London.
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Frequently asked questions about flying from Louisville to London

  • 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 9h 50m.

  • 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
Slough
Maidstone
Wembley
Southend-on-Sea
Ipswich
Canterbury
Ilford
Guildford
Hayes
Dover
Chelmsford
Folkestone
Bedford
Ramsgate
Chichester
Harlow

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.
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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