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Cheap flights from Louisville to London from $221

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 3/25. 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.
Lufthansa Logo
1:50 pm - 6:20 am
SDF
-
LHR
11h 30m1 stop
Lufthansa Logo
7:40 am - 10:30 pm
LHR
-
SDF
19h 50m2 stops
$560Lufthansa
Sat, Jan 10 - Sat, Jan 17
Lufthansa Logo
2:05 pm - 5:55 am
SDF
-
LHR
10h 50m1 stop
Lufthansa Logo
7:40 am - 10:30 pm
LHR
-
SDF
19h 50m2 stops
$561Lufthansa
Sat, Jan 10 - Sat, Jan 17
Lufthansa Logo
2:10 pm - 6:40 am
SDF
-
LHR
11h 30m1 stop
Lufthansa Logo
8:30 am - 7:43 pm
LHR
-
SDF
16h 13m2 stops
$570Lufthansa
Sun, Jan 18 - Sun, Jan 25
Finnair Logo
2:04 pm - 11:40 am
SDF
-
LHR
16h 36m1 stop
Finnair Logo
8:20 am - 8:02 pm
LHR
-
SDF
16h 42m1 stop
$590Finnair
Wed, Feb 18 - Wed, Feb 25
Lufthansa Logo
1:50 pm - 11:05 am
SDF
-
LHR
16h 15m1 stop
Lufthansa Logo
6:35 am - 7:42 pm
LHR
-
SDF
18h 07m2 stops
$595Lufthansa
Wed, Feb 18 - Wed, Feb 25
British Airways Logo
3:51 pm - 9:05 am
SDF
-
LHR
12h 14m1 stop
British Airways Logo
4:15 pm - 8:55 pm
LHR
-
SDF
33h 40m2 stops
$599British Airways
Wed, Apr 8 - Mon, Apr 13
Lufthansa Logo
1:40 pm - 6:20 am
SDF
-
LHR
11h 40m1 stop
Lufthansa Logo
3:10 pm - 11:23 pm
LHR
-
SDF
13h 13m1 stop
$601Lufthansa
Sun, Jan 18 - Sun, Jan 25
Virgin Atlantic Logo
5:47 pm - 11:40 am
SDF
-
LHR
12h 53m1 stop
Virgin Atlantic Logo
11:45 am - 9:15 pm
LHR
-
SDF
14h 30m2 stops
$602Virgin Atlantic
Mon, Jan 19 - Sun, Jan 25
British Airways Logo
1:32 pm - 8:15 am
SDF
-
LHR
13h 43m1 stop
British Airways Logo
7:30 am - 10:12 pm
LHR
-
SDF
19h 42m2 stops
$603British Airways
Fri, Jan 16 - Fri, Jan 23
Virgin Atlantic Logo
10:18 am - 6:50 am
SDF
-
LHR
15h 32m2 stops
Virgin Atlantic Logo
11:45 am - 9:14 pm
LHR
-
SDF
14h 29m2 stops
$604Virgin Atlantic
Wed, Feb 18 - Wed, Feb 25

Lufthansa flights from Louisville to London Heathrow Airport

Our best Lufthansa deals on Louisville to London Heathrow Airport flight tickets
Lufthansa
Jan 10
SDF1:50 pmLouisville Intl
11h 30m
1 stop
LHR6:20 amLondon Heathrow
Jan 17
LHR7:40 amLondon Heathrow
19h 50m
2 stops
SDF10:30 pmLouisville Intl
$560
Find similar
Lufthansa
Jan 10
SDF2:05 pmLouisville Intl
10h 50m
1 stop
LHR5:55 amLondon Heathrow
Jan 17
LHR7:40 amLondon Heathrow
19h 50m
2 stops
SDF10:30 pmLouisville Intl
$561
Find similar
Lufthansa
Jan 18
SDF2:05 pmLouisville Intl
10h 50m
1 stop
LHR5:55 amLondon Heathrow
Jan 25
LHR8:30 amLondon Heathrow
16h 13m
2 stops
SDF7:43 pmLouisville Intl
$568
Find similar

British Airways flights from Louisville to London Heathrow Airport

Our best British Airways deals on Louisville to London Heathrow Airport flight tickets
British Airways
Apr 8
SDF3:51 pmLouisville Intl
12h 14m
1 stop
LHR9:05 amLondon Heathrow
Apr 13
LHR4:15 pmLondon Heathrow
33h 40m
2 stops
SDF8:55 pmLouisville Intl
$599
Find similar
British Airways
Jan 16
SDF1:32 pmLouisville Intl
13h 43m
1 stop
LHR8:15 amLondon Heathrow
Jan 23
LHR7:30 amLondon Heathrow
19h 42m
2 stops
SDF10:12 pmLouisville Intl
$603
Find similar
British Airways
Jan 10
SDF7:11 pmLouisville Intl
31h 09m
1 stop
LHR7:20 amLondon Heathrow
Jan 18
LHR2:45 pmLondon Heathrow
12h 27m
1 stop
SDF10:12 pmLouisville Intl
$635
Find similar

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 December 4, 2025.
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

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 1/10

1:50 pm-6:20 am

1 stop11h 30m

London Heathrow

Sat 1/17

7:40 am-10:30 pm

2 stops19h 50m

$560

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 1/10

2:05 pm-5:55 am

1 stop10h 50m

London Heathrow

Sat 1/17

7:40 am-10:30 pm

2 stops19h 50m

$561

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 1/18

2:10 pm-6:40 am

1 stop11h 30m

London Heathrow

Sun 1/25

8:30 am-7:43 pm

2 stops16h 13m

$570

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/18

2:04 pm-11:40 am

1 stop16h 36m

London Heathrow

Wed 2/25

8:20 am-8:02 pm

1 stop16h 42m

$590

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/18

1:50 pm-11:05 am

1 stop16h 15m

London Heathrow

Wed 2/25

6:35 am-7:42 pm

2 stops18h 07m

$595

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 4/8

3:51 pm-9:05 am

1 stop12h 14m

London Heathrow

Mon 4/13

4:15 pm-8:55 pm

2 stops33h 40m

$599

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 1/18

1:40 pm-6:20 am

1 stop11h 40m

London Heathrow

Sun 1/25

3:10 pm-11:23 pm

1 stop13h 13m

$601

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 1/19

5:47 pm-11:40 am

1 stop12h 53m

London Heathrow

Sun 1/25

11:45 am-9:15 pm

2 stops14h 30m

$602

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 1/16

1:32 pm-8:15 am

1 stop13h 43m

London Heathrow

Fri 1/23

7:30 am-10:12 pm

2 stops19h 42m

$603

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/18

10:18 am-6:50 am

2 stops15h 32m

London Heathrow

Wed 2/25

11:45 am-9:14 pm

2 stops14h 29m

$604

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 $630. If you’re not able to fly to London Heathrow Airport in February, then October is your next best option. Flight prices from Louisville to London Heathrow Airport during October average around $694.

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $803. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $1,071.

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

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Louisville to London Heathrow Airport in the evening for as low as $882. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,038.

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 $990 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 $749 on momondo.

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

You could potentially save up to 19% 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

10h 01m

Direct flights

None
The fastest flight from Louisville to London Heathrow Airport takes 10h 01m
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

  • 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 10h 50m.

  • 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
KLMPriceFrom $574Free CancellationRating
7.7
1,430 reviews
Search KLM flights
Virgin AtlanticPriceFrom $580Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $598Free CancellationRating
6.7
7,562 reviews
Search British Airways flights
DeltaPriceFrom $675Free CancellationRating
7.9
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $678Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
American AirlinesPriceFrom $692Free CancellationRating
7.2
11,047 reviews
Search American 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
Dover
Luton
Slough
Guildford
Hayes
Dartford
Stratford-upon-Avon
Crawley
Brentwood
Salisbury
Wembley
Romford
Watford
Ilford
Cobham
Folkestone
Uxbridge

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

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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