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Cheap flights from Louisville to London from $330

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 9/20. 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.
United Airlines Logo
1:37 pm - 8:40 pm
SDF
-
LHR
26h 03m
1 stop
United Airlines Logo
5:50 pm - 4:49 pm
LHR
-
SDF
27h 59m
2 stops
$843United Airlines
Tue, Sep 29 - Thu, Oct 1
Iberia Logo
7:07 pm - 12:15 pm
SDF
-
LHR
12h 08m
1 stop
Iberia Logo
6:15 am - 10:58 pm
LHR
-
SDF
21h 43m
2 stops
$867Iberia
Wed, Sep 9 - Tue, Sep 22
Iberia Logo
7:07 pm - 12:15 pm
SDF
-
LHR
12h 08m
1 stop
Iberia Logo
7:50 am - 10:58 pm
LHR
-
SDF
20h 08m
2 stops
$868Iberia
Wed, Sep 9 - Tue, Sep 22
Scandinavian Airlines Logo
3:24 pm - 4:00 pm
SDF
-
LHR
19h 36m
2 stops
Scandinavian Airlines Logo
7:30 pm - 12:02 am
LHR
-
SDF
32h 32m
2 stops
$882Scandinavian Airlines
Tue, Oct 20 - Tue, Oct 27
British Airways Logo
5:08 pm - 9:40 am
SDF
-
LHR
11h 32m
1 stop
British Airways Logo
6:15 am - 7:13 pm
LHR
-
SDF
17h 58m
2 stops
$887British Airways
Sun, Aug 23 - Fri, Dec 4
British Airways Logo
4:55 pm - 9:05 am
SDF
-
LHR
11h 10m
1 stop
British Airways Logo
7:30 am - 7:13 pm
LHR
-
SDF
16h 43m
2 stops
$888British Airways
Sun, Aug 23 - Fri, Dec 4
British Airways Logo
7:08 pm - 12:15 pm
SDF
-
LHR
12h 07m
1 stop
British Airways Logo
11:30 am - 12:49 pm
LHR
-
SDF
30h 19m
2 stops
$894British Airways
Wed, Aug 26 - Wed, Sep 2
British Airways Logo
5:53 pm - 2:25 pm
SDF
-
LHR
15h 32m
1 stop
British Airways Logo
9:15 am - 5:59 pm
LHR
-
SDF
13h 44m
1 stop
$896British Airways
Mon, Aug 17 - Tue, Aug 25
British Airways Logo
5:08 pm - 8:00 am
SDF
-
LHR
9h 52m
1 stop
British Airways Logo
1:10 pm - 9:26 pm
LHR
-
SDF
13h 16m
1 stop
$901British Airways
Wed, Aug 26 - Wed, Sep 2
Iberia Logo
10:31 am - 7:40 am
SDF
-
LHR
16h 09m
1 stop
Iberia Logo
12:20 pm - 10:58 pm
LHR
-
SDF
39h 38m
2 stops
$928Iberia
Tue, Sep 15 - Sun, Sep 20

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United Airlines flights from Louisville to London Heathrow Airport

Our best United Airlines deals on Louisville to London Heathrow Airport flight tickets
United Airlines
Sep 29
SDF1:37 pmLouisville Intl
26h 03m
1 stop
LHR8:40 pmLondon Heathrow
Oct 1
LHR5:50 pmLondon Heathrow
27h 59m
2 stops
SDF4:49 pmLouisville Intl
$843
United Airlines
Sep 12
SDF3:41 pmLouisville Intl
35h 04m
1 stop
LHR7:45 amLondon Heathrow
Sep 26
LHR12:40 pmLondon Heathrow
39h 35m
2 stops
SDF11:15 pmLouisville Intl
$967
United Airlines
Sep 29
SDF1:37 pmLouisville Intl
12h 38m
1 stop
LHR7:15 amLondon Heathrow
Oct 1
LHR5:50 pmLondon Heathrow
27h 59m
2 stops
SDF4:49 pmLouisville Intl
$981

Iberia flights from Louisville to London Heathrow Airport

Our best Iberia deals on Louisville to London Heathrow Airport flight tickets
Iberia
Sep 9
SDF7:07 pmLouisville Intl
12h 08m
1 stop
LHR12:15 pmLondon Heathrow
Sep 22
LHR6:15 amLondon Heathrow
21h 43m
2 stops
SDF10:58 pmLouisville Intl
$867
Iberia
Sep 9
SDF7:07 pmLouisville Intl
12h 08m
1 stop
LHR12:15 pmLondon Heathrow
Sep 22
LHR7:50 amLondon Heathrow
20h 08m
2 stops
SDF10:58 pmLouisville Intl
$868
Iberia
Sep 15
SDF10:31 amLouisville Intl
16h 09m
1 stop
LHR7:40 amLondon Heathrow
Sep 20
LHR12:20 pmLondon Heathrow
39h 38m
2 stops
SDF10:58 pmLouisville Intl
$928

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 May 3, 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

Tue 9/29

1:37 pm-8:40 pm

1 stop26h 03m

London Heathrow

Thu 10/1

5:50 pm-4:49 pm

2 stops27h 59m

$843

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

7:07 pm-12:15 pm

1 stop12h 08m

London Heathrow

Tue 9/22

6:15 am-10:58 pm

2 stops21h 43m

$867

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/9

7:07 pm-12:15 pm

1 stop12h 08m

London Heathrow

Tue 9/22

7:50 am-10:58 pm

2 stops20h 08m

$868

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 10/20

3:24 pm-4:00 pm

2 stops19h 36m

London Heathrow

Tue 10/27

7:30 pm-12:02 am

2 stops32h 32m

$882

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 8/23

5:08 pm-9:40 am

1 stop11h 32m

London Heathrow

Fri 12/4

6:15 am-7:13 pm

2 stops17h 58m

$887

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 8/23

4:55 pm-9:05 am

1 stop11h 10m

London Heathrow

Fri 12/4

7:30 am-7:13 pm

2 stops16h 43m

$888

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/26

7:08 pm-12:15 pm

1 stop12h 07m

London Heathrow

Wed 9/2

11:30 am-12:49 pm

2 stops30h 19m

$894

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 8/17

5:53 pm-2:25 pm

1 stop15h 32m

London Heathrow

Tue 8/25

9:15 am-5:59 pm

1 stop13h 44m

$896
Quickest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 8/26

5:08 pm-8:00 am

1 stop9h 52m

London Heathrow

Wed 9/2

1:10 pm-9:26 pm

1 stop13h 16m

$901

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/15

10:31 am-7:40 am

1 stop16h 09m

London Heathrow

Sun 9/20

12:20 pm-10:58 pm

2 stops39h 38m

$928

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 from Louisville 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 $916 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 $767 on momondo.

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

You could potentially save up to 13% 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

11h 05m

Direct flights

None
The fastest flight from Louisville to London Heathrow Airport takes 11h 05m
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 11h 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
Virgin AtlanticPriceFrom $577Free CancellationRating
7.4
688 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $588Free CancellationRating
7.9
8,460 reviews
Search Delta flights
British AirwaysPriceFrom $589Free CancellationRating
6.7
7,943 reviews
Search British Airways flights
American AirlinesPriceFrom $676Free CancellationRating
7.1
11,674 reviews
Search American Airlines flights
United AirlinesPriceFrom $678Free CancellationRating
7.4
9,683 reviews
Search United Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Stratford-upon-Avon
Crawley
Slough
Wembley
Stansted
Watford
Croydon
Uxbridge
Brentwood
Dartford
Cobham
Folkestone
Romford
Harrow

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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