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Cheap flights from Louisville to London from £242

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 1/11. 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
1 adult, Economy, 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.
Iberia Logo
10:26 - 08:35
SDF
-
LHR
18h 09m
1 stop
Iberia Logo
07:30 - 21:35
LHR
-
SDF
19h 05m
2 stops
£642Iberia
Tue, 27 Oct - Tue, 3 Nov
British Airways Logo
14:47 - 06:50
SDF
-
LHR
11h 03m
1 stop
British Airways Logo
07:50 - 23:22
LHR
-
SDF
20h 32m
2 stops
£656British Airways
Tue, 22 Sep - Wed, 30 Sep
British Airways Logo
17:59 - 12:15
SDF
-
LHR
13h 16m
1 stop
British Airways Logo
07:50 - 23:22
LHR
-
SDF
20h 32m
2 stops
£656British Airways
Tue, 22 Sep - Wed, 30 Sep
United Airlines Logo
15:37 - 07:55
SDF
-
LHR
35h 18m
1 stop
United Airlines Logo
06:50 - 17:40
LHR
-
SDF
15h 50m
2 stops
£658United Airlines
Fri, 9 Oct - Mon, 12 Oct
United Airlines Logo
18:30 - 10:25
SDF
-
LHR
10h 55m
1 stop
United Airlines Logo
10:50 - 23:59
LHR
-
SDF
18h 09m
2 stops
£660United Airlines
Mon, 5 Oct - Wed, 14 Oct
United Airlines Logo
13:50 - 09:00
SDF
-
LHR
14h 10m
1 stop
United Airlines Logo
06:50 - 17:40
LHR
-
SDF
15h 50m
2 stops
£661United Airlines
Sun, 27 Sep - Tue, 6 Oct
United Airlines Logo
13:50 - 08:30
SDF
-
LHR
13h 40m
1 stop
United Airlines Logo
12:05 - 20:41
LHR
-
SDF
37h 36m
2 stops
£662United Airlines
Mon, 19 Oct - Mon, 2 Nov
United Airlines Logo
13:47 - 07:10
SDF
-
LHR
13h 23m
2 stops
United Airlines Logo
06:50 - 19:01
LHR
-
SDF
17h 11m
2 stops
£663United Airlines
Tue, 27 Oct - Tue, 3 Nov
United Airlines Logo
11:13 - 06:55
SDF
-
LHR
14h 42m
2 stops
United Airlines Logo
10:50 - 23:59
LHR
-
SDF
18h 09m
2 stops
£664United Airlines
Mon, 5 Oct - Wed, 14 Oct
British Airways Logo
17:59 - 10:50
SDF
-
LHR
11h 51m
1 stop
British Airways Logo
14:25 - 22:33
LHR
-
SDF
13h 08m
1 stop
£665British Airways
Mon, 21 Sep - Fri, 2 Oct

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United Airlines flights from Louisville to London Heathrow Airport

Our best United Airlines deals on Louisville to London Heathrow Airport flight tickets
United Airlines
9 Oct
SDF15:37Louisville Intl
35h 18m
1 stop
LHR07:55London Heathrow
12 Oct
LHR06:50London Heathrow
15h 50m
2 stops
SDF17:40Louisville Intl
£658
United Airlines
5 Oct
SDF18:30Louisville Intl
10h 55m
1 stop
LHR10:25London Heathrow
14 Oct
LHR10:50London Heathrow
18h 09m
2 stops
SDF23:59Louisville Intl
£660
United Airlines
27 Sept
SDF13:50Louisville Intl
14h 10m
1 stop
LHR09:00London Heathrow
6 Oct
LHR06:50London Heathrow
15h 50m
2 stops
SDF17:40Louisville Intl
£661

Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets
Delta
21 Sept
SDF08:09Louisville Intl
18h 06m
1 stop
LHR07:15London Heathrow
2 Oct
LHR08:40London Heathrow
16h 53m
2 stops
SDF20:33Louisville Intl
£685
Delta
21 Sept
SDF08:09Louisville Intl
18h 06m
1 stop
LHR07:15London Heathrow
2 Oct
LHR08:40London Heathrow
16h 53m
2 stops
SDF20:33Louisville Intl
£686
Delta
27 Sept
SDF14:47Louisville Intl
14h 33m
2 stops
LHR10:20London Heathrow
6 Oct
LHR09:55London Heathrow
16h 19m
2 stops
SDF21:14Louisville Intl
£690

momondo Fare Finder

 
Customise your flight search to find flights from Louisville to London Heathrow Airport 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 8 July 2026.
Use the filters below to find and compare flights from Louisville to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 27/10

10:26-08:35

1 stop18h 09m

London Heathrow

Tue 3/11

07:30-21:35

2 stops19h 05m

£642

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 22/9

14:47-06:50

1 stop11h 03m

London Heathrow

Wed 30/9

07:50-23:22

2 stops20h 32m

£656

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 22/9

17:59-12:15

1 stop13h 16m

London Heathrow

Wed 30/9

07:50-23:22

2 stops20h 32m

£656

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/10

15:37-07:55

1 stop35h 18m

London Heathrow

Mon 12/10

06:50-17:40

2 stops15h 50m

£658

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 5/10

18:30-10:25

1 stop10h 55m

London Heathrow

Wed 14/10

10:50-23:59

2 stops18h 09m

£660

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 27/9

13:50-09:00

1 stop14h 10m

London Heathrow

Tue 6/10

06:50-17:40

2 stops15h 50m

£661

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 19/10

13:50-08:30

1 stop13h 40m

London Heathrow

Mon 2/11

12:05-20:41

2 stops37h 36m

£662

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 27/10

13:47-07:10

2 stops13h 23m

London Heathrow

Tue 3/11

06:50-19:01

2 stops17h 11m

£663

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 5/10

11:13-06:55

2 stops14h 42m

London Heathrow

Wed 14/10

10:50-23:59

2 stops18h 09m

£664
Fastest return journey

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 21/9

17:59-10:50

1 stop11h 51m

London Heathrow

Fri 2/10

14:25-22:33

1 stop13h 08m

£665

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Louisville to London Heathrow Airport

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 Heathrow Airport?

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

In general, February is the cheapest month to fly from Louisville to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £471. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Louisville averaging around £490.

When to book flights from Louisville to London Heathrow Airport

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

Cheap Louisville to London Heathrow Airport (SDF to LHR) flight deals and tips

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

Fastest flight time

11h 00m

Direct flights

None
The fastest flight from Louisville to London Heathrow Airport takes 11h 00m
There are no direct flights from Louisville to London Heathrow Airport. There are no popular flight routes from Louisville to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Louisville to London Heathrow Airport

  • How far is Louisville Intl to London Heathrow by plane?

    Louisville Intl and London Heathrow are 4030.3 mi apart from one another. In terms of flight time, this usually takes a little over 11h 00m.

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

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

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

    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 Heathrow Airport.

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

    The travel and health documents you'll need for your trip to London Heathrow Airport 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 Heathrow Airport. 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
Wembley
Gatwick
Milton Keynes
Luton
Stratford-upon-Avon
Southend-on-Sea
Slough
Northampton
Maidstone
Ipswich
Swindon
Ilford
Folkestone
Canterbury
Poole
Guildford
Hayes
Hastings
Chichester

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?

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 you have performed a search for Louisville to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Louisville to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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