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Cheap flights from Louisville to London from $331

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 11/1. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
12:41 pm - 7:40 am
SDF
-
LHR
13h 59m
1 stop
Iberia Logo
7:30 am - 9:35 pm
LHR
-
SDF
18h 05m
2 stops
$860Iberia
Wed, Oct 21 - Fri, Oct 30
Iberia Logo
12:41 pm - 10:35 am
SDF
-
LHR
16h 54m
2 stops
Iberia Logo
6:15 am - 9:35 pm
LHR
-
SDF
19h 20m
2 stops
$868Iberia
Wed, Oct 21 - Fri, Oct 30
Iberia Logo
6:14 pm - 12:15 pm
SDF
-
LHR
13h 01m
1 stop
Iberia Logo
3:00 pm - 9:35 pm
LHR
-
SDF
34h 35m
2 stops
$871Iberia
Tue, Oct 13 - Mon, Oct 26
British Airways Logo
2:47 pm - 6:50 am
SDF
-
LHR
11h 03m
1 stop
British Airways Logo
7:50 am - 11:22 pm
LHR
-
SDF
20h 32m
2 stops
$878British Airways
Tue, Sep 22 - Wed, Sep 30
Iberia Logo
6:14 pm - 10:35 am
SDF
-
LHR
35h 21m
2 stops
Iberia Logo
3:00 pm - 9:35 pm
LHR
-
SDF
34h 35m
2 stops
$879Iberia
Mon, Oct 19 - Thu, Oct 29
British Airways Logo
5:00 pm - 7:00 pm
SDF
-
LHR
21h 00m
1 stop
British Airways Logo
6:15 am - 9:35 pm
LHR
-
SDF
20h 20m
2 stops
$883British Airways
Sat, Nov 7 - Thu, Nov 12
Delta Logo
8:09 am - 6:25 am
SDF
-
LHR
17h 16m
1 stop
Delta Logo
6:30 am - 5:10 pm
LHR
-
SDF
15h 40m
2 stops
$884Delta
Mon, Sep 21 - Fri, Oct 2
Delta Logo
8:09 am - 6:25 am
SDF
-
LHR
17h 16m
1 stop
Delta Logo
6:30 am - 5:10 pm
LHR
-
SDF
15h 40m
2 stops
$885Delta
Mon, Sep 21 - Fri, Oct 2
Lufthansa Logo
1:42 pm - 10:45 am
SDF
-
LHR
16h 03m
2 stops
Lufthansa Logo
8:45 am - 10:30 pm
LHR
-
SDF
18h 45m
2 stops
$888Lufthansa
Wed, Nov 4 - Wed, Nov 11
Delta Logo
9:45 am - 7:10 am
SDF
-
LHR
16h 25m
2 stops
Delta Logo
6:30 am - 5:10 pm
LHR
-
SDF
15h 40m
2 stops
$889Delta
Tue, Sep 22 - Wed, Sep 30

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British Airways flights from Louisville to London Heathrow Airport

Our best British Airways deals on Louisville to London Heathrow Airport flight tickets
British Airways
Sep 22
SDF2:47 pmLouisville Intl
11h 03m
1 stop
LHR6:50 amLondon Heathrow
Sep 30
LHR7:50 amLondon Heathrow
20h 32m
2 stops
SDF11:22 pmLouisville Intl
$878
British Airways
Nov 7
SDF5:00 pmLouisville Intl
21h 00m
1 stop
LHR7:00 pmLondon Heathrow
Nov 12
LHR6:15 amLondon Heathrow
20h 20m
2 stops
SDF9:35 pmLouisville Intl
$883
British Airways
Sep 21
SDF5:59 pmLouisville Intl
11h 51m
1 stop
LHR10:50 amLondon Heathrow
Oct 2
LHR2:25 pmLondon Heathrow
13h 08m
1 stop
SDF10:33 pmLouisville Intl
$891

Delta flights from Louisville to London Heathrow Airport

Our best Delta deals on Louisville to London Heathrow Airport flight tickets
Delta
Sep 21
SDF8:09 amLouisville Intl
17h 16m
1 stop
LHR6:25 amLondon Heathrow
Oct 2
LHR6:30 amLondon Heathrow
15h 40m
2 stops
SDF5:10 pmLouisville Intl
$884
Delta
Sep 21
SDF8:09 amLouisville Intl
17h 16m
1 stop
LHR6:25 amLondon Heathrow
Oct 2
LHR6:30 amLondon Heathrow
15h 40m
2 stops
SDF5:10 pmLouisville Intl
$885
Delta
Sep 22
SDF9:45 amLouisville Intl
16h 25m
2 stops
LHR7:10 amLondon Heathrow
Sep 30
LHR6:30 amLondon Heathrow
15h 40m
2 stops
SDF5:10 pmLouisville Intl
$889

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 July 13, 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

Wed 10/21

12:41 pm-7:40 am

1 stop13h 59m

London Heathrow

Fri 10/30

7:30 am-9:35 pm

2 stops18h 05m

$860

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 10/21

12:41 pm-10:35 am

2 stops16h 54m

London Heathrow

Fri 10/30

6:15 am-9:35 pm

2 stops19h 20m

$868

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 10/13

6:14 pm-12:15 pm

1 stop13h 01m

London Heathrow

Mon 10/26

3:00 pm-9:35 pm

2 stops34h 35m

$871
Quickest round-trip

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/22

2:47 pm-6:50 am

1 stop11h 03m

London Heathrow

Wed 9/30

7:50 am-11:22 pm

2 stops20h 32m

$878

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 10/19

6:14 pm-10:35 am

2 stops35h 21m

London Heathrow

Thu 10/29

3:00 pm-9:35 pm

2 stops34h 35m

$879

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 11/7

5:00 pm-7:00 pm

1 stop21h 00m

London Heathrow

Thu 11/12

6:15 am-9:35 pm

2 stops20h 20m

$883

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/21

8:09 am-6:25 am

1 stop17h 16m

London Heathrow

Fri 10/2

6:30 am-5:10 pm

2 stops15h 40m

$884

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/21

8:09 am-6:25 am

1 stop17h 16m

London Heathrow

Fri 10/2

6:30 am-5:10 pm

2 stops15h 40m

$885

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 11/4

1:42 pm-10:45 am

2 stops16h 03m

London Heathrow

Wed 11/11

8:45 am-10:30 pm

2 stops18h 45m

$888

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/22

9:45 am-7:10 am

2 stops16h 25m

London Heathrow

Wed 9/30

6:30 am-5:10 pm

2 stops15h 40m

$889

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 January is your next best option. Flight prices from Louisville to London Heathrow Airport during January average around $655.

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

You could potentially save up to 25% 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 30m

Direct flights

None
The fastest flight from Louisville to London Heathrow Airport takes 10h 30m
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 10h 30m.

  • 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
1,537 reviews
Search KLM flights
Virgin AtlanticPriceFrom $577Free CancellationRating
7.5
693 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $588Free CancellationRating
7.8
8,466 reviews
Search Delta flights
British AirwaysPriceFrom $606Free CancellationRating
6.7
8,104 reviews
Search British Airways flights
American AirlinesPriceFrom $676Free CancellationRating
7.1
11,816 reviews
Search American Airlines flights
United AirlinesPriceFrom $705Free CancellationRating
7.4
9,982 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
Luton
Hayes
Dover
Crawley
Wembley
Croydon
Stansted
Slough
Stratford-upon-Avon
Harrow
Kingston upon Thames
Watford
Brentwood
Ilford
Cobham
Folkestone
Guildford

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.

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