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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
2:05 pm - 5:55 amSDF-LHR
10h 50m1 stop
Lufthansa Logo
7:40 am - 8:28 pmLHR-SDF
17h 48m2 stops
$558Lufthansa
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Sat, Jan 10 - Sat, Jan 17
Scandinavian Airlines Logo
12:30 pm - 9:20 amSDF-LHR
15h 50m2 stops
Scandinavian Airlines Logo
6:40 am - 10:37 pmLHR-SDF
19h 57m2 stops
$598Scandinavian Airlines
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Thu, Mar 5 - Mon, Mar 16
Multiple Airlines Logo
8:29 am - 7:10 amSDF-LHR
17h 41m2 stops
Multiple Airlines Logo
11:10 am - 10:30 pmLHR-SDF
16h 20m2 stops
$615Multiple Airlines
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Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
6:12 pm - 11:15 amSDF-LHR
12h 03m1 stop
United Airlines Logo
6:50 am - 7:31 pmLHR-SDF
17h 41m2 stops
$624United Airlines
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Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
2:05 pm - 9:10 amSDF-LHR
14h 05m2 stops
United Airlines Logo
6:50 am - 7:43 pmLHR-SDF
17h 53m2 stops
$629United Airlines
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Fri, Jan 9 - Fri, Jan 16
Lufthansa Logo
2:05 pm - 5:55 amSDF-LHR
10h 50m1 stop
Lufthansa Logo
3:10 pm - 11:23 pmLHR-SDF
13h 13m1 stop
$637Lufthansa
Find Deal
Sat, Jan 10 - Sat, Jan 17
Lufthansa Logo
2:05 pm - 5:55 amSDF-LHR
10h 50m1 stop
Lufthansa Logo
6:30 pm - 5:19 pmLHR-SDF
27h 49m2 stops
$638Lufthansa
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Sat, Feb 14 - Fri, Feb 20
Multiple Airlines Logo
9:30 am - 7:10 amSDF-LHR
16h 40m2 stops
Multiple Airlines Logo
6:30 pm - 5:19 pmLHR-SDF
27h 49m2 stops
$644Multiple Airlines
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Sat, Feb 14 - Fri, Feb 20
British Airways Logo
6:38 pm - 12:15 pmSDF-LHR
12h 37m1 stop
British Airways Logo
2:55 pm - 12:27 amLHR-SDF
37h 32m2 stops
$647British Airways
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Wed, Mar 4 - Wed, Mar 18
Virgin Atlantic Logo
3:32 pm - 7:50 amSDF-LHR
11h 18m1 stop
Virgin Atlantic Logo
10:45 am - 11:50 pmLHR-SDF
18h 05m1 stop
$652Virgin Atlantic
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Wed, Feb 4 - Sun, Feb 8

Virgin Atlantic flights from Louisville to London Heathrow Airport

Our best Virgin Atlantic deals on Louisville to London Heathrow Airport flight tickets
Virgin Atlantic
Feb 4
SDF5:47 pmLouisville Intl
12h 53m
1 stop
LHR11:40 amLondon Heathrow
Feb 8
LHR6:30 amLondon Heathrow
15h 31m
2 stops
SDF5:01 pmLouisville Intl
$601
Find similar
Virgin Atlantic
Feb 4
SDF3:32 pmLouisville Intl
15h 08m
1 stop
LHR11:40 amLondon Heathrow
Feb 8
LHR10:45 amLondon Heathrow
13h 54m
1 stop
SDF7:39 pmLouisville Intl
$628
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Virgin Atlantic
Feb 4
SDF3:32 pmLouisville Intl
11h 18m
1 stop
LHR7:50 amLondon Heathrow
Feb 8
LHR10:45 amLondon Heathrow
18h 05m
1 stop
SDF11:50 pmLouisville Intl
$652
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Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets
Delta
Mar 13
SDF12:03 pmLouisville Intl
14h 17m
1 stop
LHR6:20 amLondon Heathrow
Mar 19
LHR6:30 amLondon Heathrow
14h 41m
2 stops
SDF5:11 pmLouisville Intl
$648
Find similar
Delta
Mar 13
SDF6:35 amLouisville Intl
20h 20m
1 stop
LHR6:55 amLondon Heathrow
Mar 20
LHR8:55 amLondon Heathrow
16h 05m
1 stop
SDF9:00 pmLouisville Intl
$653
Find similar
Delta
Mar 13
SDF10:13 amLouisville Intl
16h 07m
2 stops
LHR6:20 amLondon Heathrow
Mar 17
LHR1:00 pmLondon Heathrow
12h 15m
1 stop
SDF9:15 pmLouisville Intl
$657
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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 November 26, 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

2:05 pm-5:55 am

1 stop10h 50m

London Heathrow

Sat 1/17

7:40 am-8:28 pm

2 stops17h 48m

$558

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 3/5

12:30 pm-9:20 am

2 stops15h 50m

London Heathrow

Mon 3/16

6:40 am-10:37 pm

2 stops19h 57m

$598

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 1/8

8:29 am-7:10 am

2 stops17h 41m

London Heathrow

Thu 1/15

11:10 am-10:30 pm

2 stops16h 20m

$615

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Thu 1/8

6:12 pm-11:15 am

1 stop12h 03m

London Heathrow

Thu 1/15

6:50 am-7:31 pm

2 stops17h 41m

$624

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 1/9

2:05 pm-9:10 am

2 stops14h 05m

London Heathrow

Fri 1/16

6:50 am-7:43 pm

2 stops17h 53m

$629

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 1/10

2:05 pm-5:55 am

1 stop10h 50m

London Heathrow

Sat 1/17

3:10 pm-11:23 pm

1 stop13h 13m

$637

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 2/14

2:05 pm-5:55 am

1 stop10h 50m

London Heathrow

Fri 2/20

6:30 pm-5:19 pm

2 stops27h 49m

$638

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 2/14

9:30 am-7:10 am

2 stops16h 40m

London Heathrow

Fri 2/20

6:30 pm-5:19 pm

2 stops27h 49m

$644

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 3/4

6:38 pm-12:15 pm

1 stop12h 37m

London Heathrow

Wed 3/18

2:55 pm-12:27 am

2 stops37h 32m

$647

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/4

3:32 pm-7:50 am

1 stop11h 18m

London Heathrow

Sun 2/8

10:45 am-11:50 pm

1 stop18h 05m

$652

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 20m

Direct flights

None
The fastest flight from Louisville to London Heathrow Airport takes 10h 20m
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 05m.

  • 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
1,423 reviews
Search KLM flights
Virgin AtlanticPriceFrom $580Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $598Free CancellationRating
6.7
7,539 reviews
Search British Airways flights
United AirlinesPriceFrom $678Free CancellationRating
7.4
9,050 reviews
Search United Airlines flights
DeltaPriceFrom $690Free CancellationRating
7.9
8,003 reviews
Search Delta flights
American AirlinesPriceFrom $692Free CancellationRating
7.2
11,039 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
Chelmsford
Salisbury
Wembley
Romford
Watford
Ilford
Swindon
Cobham

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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