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Cheap flights from Louisville to London from $397

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 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Virgin Atlantic Logo
2:29 pm - 8:45 amSDF-LHR
13h 16m1 stop
Virgin Atlantic Logo
12:30 pm - 9:31 pmLHR-SDF
14h 01m1 stop
$558Virgin Atlantic
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Tue, Dec 2 - Tue, Dec 9
KLM Logo
3:18 pm - 9:00 amSDF-LHR
12h 42m1 stop
KLM Logo
11:45 am - 9:13 pmLHR-SDF
14h 28m2 stops
$582KLM
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Tue, Dec 2 - Tue, Dec 9
Delta Logo
3:18 pm - 9:00 amSDF-LHR
12h 42m1 stop
Delta Logo
6:20 am - 6:45 pmLHR-SDF
17h 25m2 stops
$590Delta
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Tue, Dec 2 - Tue, Dec 9
Delta Logo
12:55 pm - 7:50 amSDF-LHR
13h 55m1 stop
Delta Logo
6:30 am - 7:04 pmLHR-SDF
17h 34m2 stops
$599Delta
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Wed, Feb 11 - Fri, Feb 20
United Airlines Logo
6:00 am - 9:20 pmSDF-LHR
10h 20m1 stop
United Airlines Logo
4:00 pm - 11:32 pmLHR-SDF
12h 32m1 stop
$647United Airlines
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Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
9:00 am - 7:10 amSDF-LHR
17h 10m3 stops
Multiple Airlines Logo
9:00 am - 11:32 pmLHR-SDF
19h 32m2 stops
$653Multiple Airlines
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Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
6:28 am - 7:10 amSDF-LHR
19h 42m3 stops
Multiple Airlines Logo
12:00 pm - 11:59 pmLHR-SDF
16h 59m2 stops
$661Multiple Airlines
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Wed, Feb 11 - Fri, Feb 20
United Airlines Logo
2:02 pm - 7:10 amSDF-LHR
36h 08m2 stops
United Airlines Logo
9:00 am - 8:44 pmLHR-SDF
16h 44m2 stops
$669United Airlines
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Sat, Nov 15 - Sun, Nov 23
British Airways Logo
4:45 pm - 7:50 amSDF-LHR
10h 05m1 stop
British Airways Logo
11:30 am - 10:48 pmLHR-SDF
16h 18m2 stops
$727British Airways
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Wed, Apr 15 - Wed, Apr 29
British Airways Logo
8:57 pm - 4:20 pmSDF-LHR
14h 23m2 stops
British Airways Logo
10:50 am - 10:48 pmLHR-SDF
16h 58m2 stops
$738British Airways
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Wed, Apr 15 - Wed, Apr 29

Virgin Atlantic flights from Louisville to London Heathrow Airport

Our best Virgin Atlantic deals on Louisville to London Heathrow Airport flight tickets
Virgin Atlantic
Dec 2
SDF2:29 pmLouisville Intl
13h 16m
1 stop
LHR8:45 amLondon Heathrow
Dec 9
LHR12:30 pmLondon Heathrow
14h 01m
1 stop
SDF9:31 pmLouisville Intl
$558
Find similar
Virgin Atlantic
Dec 2
SDF10:44 amLouisville Intl
15h 06m
2 stops
LHR6:50 amLondon Heathrow
Dec 9
LHR6:30 amLondon Heathrow
15h 46m
2 stops
SDF5:16 pmLouisville Intl
$596
Find similar
Virgin Atlantic
Apr 28
SDF2:59 pmLouisville Intl
10h 31m
1 stop
LHR6:30 amLondon Heathrow
May 5
LHR10:55 amLondon Heathrow
13h 06m
1 stop
SDF7:01 pmLouisville Intl
$695
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KLM flights from Louisville to London Heathrow Airport

Our best KLM deals on Louisville to London Heathrow Airport flight tickets
KLM
Dec 2
SDF3:18 pmLouisville Intl
12h 42m
1 stop
LHR9:00 amLondon Heathrow
Dec 9
LHR11:45 amLondon Heathrow
14h 28m
2 stops
SDF9:13 pmLouisville Intl
$582
Find similar
KLM
Dec 2
SDF12:37 pmLouisville Intl
13h 28m
1 stop
LHR7:05 amLondon Heathrow
Dec 9
LHR1:00 pmLondon Heathrow
13h 13m
1 stop
SDF9:13 pmLouisville Intl
$597
Find similar
KLM
Feb 11
SDF3:32 pmLouisville Intl
11h 18m
1 stop
LHR7:50 amLondon Heathrow
Feb 20
LHR10:45 amLondon Heathrow
14h 40m
1 stop
SDF8:25 pmLouisville Intl
$605
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 November 3, 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

Tue 12/2

2:29 pm-8:45 am

1 stop13h 16m

London Heathrow

Tue 12/9

12:30 pm-9:31 pm

1 stop14h 01m

$558

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 12/2

3:18 pm-9:00 am

1 stop12h 42m

London Heathrow

Tue 12/9

11:45 am-9:13 pm

2 stops14h 28m

$582

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 12/2

3:18 pm-9:00 am

1 stop12h 42m

London Heathrow

Tue 12/9

6:20 am-6:45 pm

2 stops17h 25m

$590

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/11

12:55 pm-7:50 am

1 stop13h 55m

London Heathrow

Fri 2/20

6:30 am-7:04 pm

2 stops17h 34m

$599

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 12/2

6:00 am-9:20 pm

1 stop10h 20m

London Heathrow

Tue 12/9

4:00 pm-11:32 pm

1 stop12h 32m

$647

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 12/2

9:00 am-7:10 am

3 stops17h 10m

London Heathrow

Tue 12/9

9:00 am-11:32 pm

2 stops19h 32m

$653

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 2/11

6:28 am-7:10 am

3 stops19h 42m

London Heathrow

Fri 2/20

12:00 pm-11:59 pm

2 stops16h 59m

$661

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 11/15

2:02 pm-7:10 am

2 stops36h 08m

London Heathrow

Sun 11/23

9:00 am-8:44 pm

2 stops16h 44m

$669

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 4/15

4:45 pm-7:50 am

1 stop10h 05m

London Heathrow

Wed 4/29

11:30 am-10:48 pm

2 stops16h 18m

$727

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 4/15

8:57 pm-4:20 pm

2 stops14h 23m

London Heathrow

Wed 4/29

10:50 am-10:48 pm

2 stops16h 58m

$738

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 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 $708.

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 $987 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 $836 on momondo.

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

Direct flights

None
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
1,404 reviews
Search KLM flights
Virgin AtlanticPriceFrom $580Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $598Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
United AirlinesPriceFrom $678Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
DeltaPriceFrom $690Free CancellationRating
7.9
8,001 reviews
Search Delta flights
American AirlinesPriceFrom $692Free CancellationRating
7.2
11,036 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
Crawley
Stratford-upon-Avon
Brentwood
Salisbury
Chelmsford
Folkestone
Romford
Ilford
Swindon
Cobham
Wembley

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.
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