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Cheap flights from Louisville to London from $291

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 11/17. 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

Delta Logo
10:30 am - 8:55 amSDF-LHR
17h 25m1 stop
Delta Logo
11:30 am - 12:01 amLHR-SDF
17h 31m2 stops
$568Delta
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lun., oct. 13 - mié., oct. 22
Air France Logo
7:33 pm - 1:30 pmSDF-LHR
12h 57m1 stop
Air France Logo
1:05 pm - 9:48 pmLHR-SDF
13h 43m1 stop
$569Air France
Find Deal
dom., sep. 28 - mar., oct. 14
Delta Logo
7:33 pm - 1:30 pmSDF-LHR
12h 57m1 stop
Delta Logo
8:40 am - 9:15 pmLHR-SDF
17h 35m2 stops
$570Delta
Find Deal
dom., sep. 28 - mar., oct. 14
KLM Logo
6:05 pm - 8:55 amSDF-LHR
9h 50m1 stop
KLM Logo
11:45 am - 9:15 pmLHR-SDF
14h 30m1 stop
$576KLM
Find Deal
lun., oct. 13 - mié., oct. 22
KLM Logo
5:45 pm - 11:40 amSDF-LHR
12h 55m1 stop
KLM Logo
3:50 pm - 11:56 pmLHR-SDF
13h 06m1 stop
$584KLM
Find Deal
mié., feb. 4 - vie., feb. 13
Virgin Atlantic Logo
12:39 pm - 7:05 amSDF-LHR
14h 26m1 stop
Virgin Atlantic Logo
8:55 am - 5:13 pmLHR-SDF
13h 18m1 stop
$632Virgin Atlantic
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jue., oct. 30 - jue., nov. 6
Virgin Atlantic Logo
2:59 pm - 6:25 amSDF-LHR
10h 26m1 stop
Virgin Atlantic Logo
10:55 am - 7:01 pmLHR-SDF
13h 06m1 stop
$651Virgin Atlantic
Find Deal
jue., feb. 12 - mié., may. 20
United Airlines Logo
7:10 am - 10:15 amSDF-LHR
23h 05m1 stop
United Airlines Logo
1:25 pm - 2:45 pmLHR-SDF
30h 20m2 stops
$698United Airlines
Find Deal
vie., oct. 31 - vie., nov. 7
British Airways Logo
6:12 pm - 12:15 pmSDF-LHR
13h 03m1 stop
British Airways Logo
3:00 pm - 10:31 pmLHR-SDF
12h 31m1 stop
$700British Airways
Find Deal
lun., sep. 29 - lun., oct. 6
United Airlines Logo
9:00 am - 5:55 amSDF-LHR
16h 55m1 stop
United Airlines Logo
9:00 am - 10:29 pmLHR-SDF
18h 29m2 stops
$703United Airlines
Find Deal
jue., oct. 30 - jue., nov. 6

Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets
Delta
Oct 13
SDF10:30 amLouisville Intl
17h 25m
1 stop
LHR8:55 amLondon Heathrow
Oct 22
LHR11:30 amLondon Heathrow
17h 31m
2 stops
SDF12:01 amLouisville Intl
$568
Find similar
Delta
Sep 28
SDF7:33 pmLouisville Intl
12h 57m
1 stop
LHR1:30 pmLondon Heathrow
Oct 14
LHR8:40 amLondon Heathrow
17h 35m
2 stops
SDF9:15 pmLouisville Intl
$570
Find similar
Delta
Nov 4
SDF12:39 pmLouisville Intl
13h 26m
1 stop
LHR7:05 amLondon Heathrow
Nov 9
LHR11:30 amLondon Heathrow
17h 36m
2 stops
SDF12:06 amLouisville Intl
$618
Find similar

KLM flights from Louisville to London Heathrow Airport

Our best KLM deals on Louisville to London Heathrow Airport flight tickets
KLM
Oct 13
SDF6:05 pmLouisville Intl
9h 50m
1 stop
LHR8:55 amLondon Heathrow
Oct 22
LHR11:45 amLondon Heathrow
14h 30m
1 stop
SDF9:15 pmLouisville Intl
$576
Find similar
KLM
Feb 4
SDF5:45 pmLouisville Intl
12h 55m
1 stop
LHR11:40 amLondon Heathrow
Feb 13
LHR3:50 pmLondon Heathrow
13h 06m
1 stop
SDF11:56 pmLouisville Intl
$584
Find similar
KLM
Oct 2
SDF5:53 pmLouisville Intl
12h 17m
1 stop
LHR11:10 amLondon Heathrow
Oct 7
LHR3:15 pmLondon Heathrow
13h 46m
1 stop
SDF12:01 amLouisville Intl
$626
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 septiembre 17, 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

lun. 10/13

10:30 am-8:55 am

1 stop17h 25m

London Heathrow

mié. 10/22

11:30 am-12:01 am

2 stops17h 31m

$568

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

dom. 9/28

7:33 pm-1:30 pm

1 stop12h 57m

London Heathrow

mar. 10/14

1:05 pm-9:48 pm

1 stop13h 43m

$569

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

dom. 9/28

7:33 pm-1:30 pm

1 stop12h 57m

London Heathrow

mar. 10/14

8:40 am-9:15 pm

2 stops17h 35m

$570

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

lun. 10/13

6:05 pm-8:55 am

1 stop9h 50m

London Heathrow

mié. 10/22

11:45 am-9:15 pm

1 stop14h 30m

$576

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mié. 2/4

5:45 pm-11:40 am

1 stop12h 55m

London Heathrow

vie. 2/13

3:50 pm-11:56 pm

1 stop13h 06m

$584

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

jue. 10/30

12:39 pm-7:05 am

1 stop14h 26m

London Heathrow

jue. 11/6

8:55 am-5:13 pm

1 stop13h 18m

$632

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

jue. 2/12

2:59 pm-6:25 am

1 stop10h 26m

London Heathrow

mié. 5/20

10:55 am-7:01 pm

1 stop13h 06m

$651

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

vie. 10/31

7:10 am-10:15 am

1 stop23h 05m

London Heathrow

vie. 11/7

1:25 pm-2:45 pm

2 stops30h 20m

$698

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

lun. 9/29

6:12 pm-12:15 pm

1 stop13h 03m

London Heathrow

lun. 10/6

3:00 pm-10:31 pm

1 stop12h 31m

$700

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

jue. 10/30

9:00 am-5:55 am

1 stop16h 55m

London Heathrow

jue. 11/6

9:00 am-10:29 pm

2 stops18h 29m

$703

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 $741. If you’re not able to fly to London Heathrow Airport in February, then September is your next best option. Flight prices from Louisville to London Heathrow Airport during September average around $782.

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 $975 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 $833 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 9h 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
7.8
1,386 reviews
Search KLM flights
Virgin AtlanticPriceFrom $580Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $598Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
United AirlinesPriceFrom $684Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $692Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $694Free CancellationRating
7.9
7,961 reviews
Search Delta flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Salisbury
Brentwood
Ilford
Folkestone
Colchester
Swindon
Stratford-upon-Avon
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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