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Cheap flights from Louisville to London from $417

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 5/2. 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 round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:32 pm - 9:00 am
SDF
-
LHR
32h 28m
1 stop
United Airlines Logo
8:45 am - 10:09 pm
LHR
-
SDF
18h 24m
2 stops
$848United Airlines
Sat, Sep 26 - Tue, Sep 29
Scandinavian Airlines Logo
1:00 pm - 6:30 pm
SDF
-
LHR
24h 30m
2 stops
Scandinavian Airlines Logo
6:40 am - 11:59 pm
LHR
-
SDF
22h 19m
2 stops
$858Scandinavian Airlines
Tue, Aug 18 - Fri, Sep 4
Iberia Logo
10:31 am - 7:40 am
SDF
-
LHR
16h 09m
1 stop
Iberia Logo
6:15 am - 10:58 pm
LHR
-
SDF
21h 43m
2 stops
$863Iberia
Mon, Sep 14 - Tue, Sep 29
British Airways Logo
5:56 pm - 12:10 pm
SDF
-
LHR
13h 14m
1 stop
British Airways Logo
7:50 am - 12:07 am
LHR
-
SDF
21h 17m
2 stops
$886British Airways
Wed, Sep 9 - Tue, Sep 22
British Airways Logo
3:43 pm - 9:05 am
SDF
-
LHR
12h 22m
1 stop
British Airways Logo
9:15 am - 7:36 pm
LHR
-
SDF
15h 21m
1 stop
$891British Airways
Mon, Aug 17 - Tue, Aug 25
Multiple Airlines Logo
5:52 pm - 9:05 am
SDF
-
LHR
10h 13m
1 stop
Multiple Airlines Logo
7:50 am - 11:55 pm
LHR
-
SDF
21h 05m
2 stops
$892Multiple Airlines
Mon, Aug 17 - Tue, Aug 25
Multiple Airlines Logo
2:43 pm - 6:50 am
SDF
-
LHR
11h 07m
1 stop
Multiple Airlines Logo
7:50 am - 10:47 pm
LHR
-
SDF
19h 57m
2 stops
$893Multiple Airlines
Mon, Aug 17 - Tue, Aug 25
Iberia Logo
6:11 pm - 10:30 am
SDF
-
LHR
11h 19m
1 stop
Iberia Logo
3:15 pm - 11:01 pm
LHR
-
SDF
12h 46m
1 stop
$896Iberia
Tue, Aug 11 - Tue, Aug 25
British Airways Logo
7:07 pm - 12:15 pm
SDF
-
LHR
12h 08m
1 stop
British Airways Logo
8:00 pm - 12:07 am
LHR
-
SDF
33h 07m
2 stops
$897British Airways
Wed, Sep 9 - Tue, Sep 22
British Airways Logo
7:29 pm - 2:25 pm
SDF
-
LHR
13h 56m
1 stop
British Airways Logo
8:00 pm - 12:07 am
LHR
-
SDF
33h 07m
2 stops
$898British Airways
Wed, Sep 9 - Tue, Sep 22

British Airways flights from Louisville to London Heathrow Airport

Our best British Airways deals on Louisville to London Heathrow Airport flight tickets
British Airways
Sep 9
SDF5:56 pmLouisville Intl
13h 14m
1 stop
LHR12:10 pmLondon Heathrow
Sep 22
LHR7:50 amLondon Heathrow
21h 17m
2 stops
SDF12:07 amLouisville Intl
$886
British Airways
Aug 17
SDF3:43 pmLouisville Intl
12h 22m
1 stop
LHR9:05 amLondon Heathrow
Aug 25
LHR9:15 amLondon Heathrow
15h 21m
1 stop
SDF7:36 pmLouisville Intl
$891
British Airways
Sep 9
SDF7:07 pmLouisville Intl
12h 08m
1 stop
LHR12:15 pmLondon Heathrow
Sep 22
LHR8:00 pmLondon Heathrow
33h 07m
2 stops
SDF12:07 amLouisville Intl
$897

Lufthansa flights from Louisville to London Heathrow Airport

Our best Lufthansa deals on Louisville to London Heathrow Airport flight tickets
Lufthansa
May 6
SDF7:40 pmLouisville Intl
17h 00m
2 stops
LHR5:40 pmLondon Heathrow
May 13
LHR10:50 amLondon Heathrow
16h 40m
2 stops
SDF10:30 pmLouisville Intl
$922
Lufthansa
May 6
SDF7:40 pmLouisville Intl
16h 00m
2 stops
LHR4:40 pmLondon Heathrow
May 13
LHR7:30 amLondon Heathrow
17h 12m
2 stops
SDF7:42 pmLouisville Intl
$931
Lufthansa
Aug 17
SDF7:43 pmLouisville Intl
15h 57m
2 stops
LHR4:40 pmLondon Heathrow
Aug 25
LHR8:30 amLondon Heathrow
15h 49m
2 stops
SDF7:19 pmLouisville Intl
$932

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated April 10, 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 round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 9/26

7:32 pm-9:00 am

1 stop32h 28m

London Heathrow

Tue 9/29

8:45 am-10:09 pm

2 stops18h 24m

$848

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 8/18

1:00 pm-6:30 pm

2 stops24h 30m

London Heathrow

Fri 9/4

6:40 am-11:59 pm

2 stops22h 19m

$858

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/14

10:31 am-7:40 am

1 stop16h 09m

London Heathrow

Tue 9/29

6:15 am-10:58 pm

2 stops21h 43m

$863

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

5:56 pm-12:10 pm

1 stop13h 14m

London Heathrow

Tue 9/22

7:50 am-12:07 am

2 stops21h 17m

$886

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

3:43 pm-9:05 am

1 stop12h 22m

London Heathrow

Tue 8/25

9:15 am-7:36 pm

1 stop15h 21m

$891

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

5:52 pm-9:05 am

1 stop10h 13m

London Heathrow

Tue 8/25

7:50 am-11:55 pm

2 stops21h 05m

$892

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

2:43 pm-6:50 am

1 stop11h 07m

London Heathrow

Tue 8/25

7:50 am-10:47 pm

2 stops19h 57m

$893
Quickest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 8/11

6:11 pm-10:30 am

1 stop11h 19m

London Heathrow

Tue 8/25

3:15 pm-11:01 pm

1 stop12h 46m

$896

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

7:07 pm-12:15 pm

1 stop12h 08m

London Heathrow

Tue 9/22

8:00 pm-12:07 am

2 stops33h 07m

$897

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

7:29 pm-2:25 pm

1 stop13h 56m

London Heathrow

Tue 9/22

8:00 pm-12:07 am

2 stops33h 07m

$898

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 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?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Louisville, with most prices found around $619. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from Louisville to London Heathrow Airport during January average around $645.

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

You are more likely to see cheaper flights to London Heathrow Airport from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $903 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Louisville for as low as $754 on momondo.

Can stopping save me money on Louisville to London Heathrow Airport flights?

You could potentially save up to 20% on your flight if you consider stops on a Louisville to London Heathrow Airport flight.

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 round-trip 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

9h 52m

Direct flights

None
The fastest flight from Louisville to London Heathrow Airport takes 9h 52m
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?

    A flight from Louisville Intl to London Heathrow will travel around 4030.3 mi. By plane, this route typically takes 9h 52m.

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

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

    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 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.

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

Best airlines flying from Louisville to London Heathrow Airport

Compare and see reviews for airlines that fly from Louisville to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom $577Free CancellationRating
7.5
685 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $588Free CancellationRating
7.9
8,397 reviews
Search Delta flights
British AirwaysPriceFrom $589Free CancellationRating
6.7
7,869 reviews
Search British Airways flights
American AirlinesPriceFrom $676Free CancellationRating
7.1
11,563 reviews
Search American Airlines flights
United AirlinesPriceFrom $678Free CancellationRating
7.4
9,562 reviews
Search United Airlines 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
Hayes
Slough
Stratford-upon-Avon
Wembley
Crawley
Stansted
Croydon
Dartford
Brentwood
Cobham
Folkestone
Guildford
Romford
Harrow
Watford

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. momondo allows you to filter the results for Louisville to London flights to just show those with flexible booking policies.

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?

Of course. momondo tracks the price of Louisville to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London Heathrow Airport trip

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