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$275+ Cheap flights from Louisville (SDF) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LON
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
1 adult, Economy
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Cheap flight deals from Louisville to London

Cheapest flights from Louisville to London
Explore the most affordable flight options available from Louisville to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:24 pm
SDF
-
LGW
1 stop31h 36m
Multiple Airlines
Wed 8/192:00 pm
LGW
-
SDF
1 stop31h 29m
Multiple Airlines
Deal found 6/7$729
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:24 pm
SDF
-
LGW
1 stop31h 36m
Multiple Airlines
Fri 8/212:00 pm
LGW
-
SDF
2 stops35h 06m
Multiple Airlines
Deal found 6/7$772
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:24 pm
SDF
-
LGW
1 stop31h 36m
Multiple Airlines
Tue 8/182:00 pm
LGW
-
SDF
2 stops29h 16m
Multiple Airlines
Deal found 6/7$802
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:24 pm
SDF
-
LGW
1 stop31h 36m
Multiple Airlines
Wed 8/192:00 pm
LGW
-
SDF
1 stop31h 29m
Multiple Airlines
Deal found 6/7$817
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/99:24 pm
SDF
-
LGW
1 stop31h 36m
Multiple Airlines
Sat 8/152:00 pm
LGW
-
SDF
1 stop29h 40m
Multiple Airlines
Deal found 6/7$820
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:28 pm
SDF
-
LGW
2 stops32h 32m
Multiple Airlines
Wed 8/192:00 pm
LGW
-
SDF
1 stop31h 29m
Multiple Airlines
Deal found 6/7$851
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/78:28 pm
SDF
-
LGW
2 stops32h 32m
Multiple Airlines
Wed 8/192:00 pm
LGW
-
SDF
1 stop31h 29m
Multiple Airlines
Deal found 6/7$859
This Iberia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:29 am
SDF
-
LHR
1 stop19h 21m
Iberia
Tue 9/226:15 am
LHR
-
SDF
2 stops21h 18m
Iberia
Deal found 6/10$865
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:53 pm
SDF
-
LHR
1 stop11h 02m
British Airways
Fri 10/29:15 am
LHR
-
SDF
1 stop14h 55m
British Airways
Deal found 6/9$882
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:38 pm
SDF
-
LHR
1 stop13h 17m
British Airways
Tue 9/2212:30 pm
LHR
-
SDF
1 stop15h 52m
British Airways
Deal found 6/10$890
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:38 pm
SDF
-
LHR
1 stop15h 47m
British Airways
Wed 9/2311:00 am
LHR
-
SDF
1 stop15h 43m
British Airways
Deal found 6/10$892
This Iberia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:59 pm
SDF
-
LHR
1 stop13h 16m
Iberia
Wed 9/236:15 am
LHR
-
SDF
2 stops21h 18m
Iberia
Deal found 6/10$895

Find flight deals from Louisville to London

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$729
(Kiwi.com)

One-way from

$275
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,359
Provider with most accurate pricing for Louisville Intl-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-London (LON) flights.
Search Deals
From Louisville Intl to London (LON)
Search Deals
One-way flight from Louisville Intl to London (LON)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($239 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to London 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2026.
Use the filters below to find and compare flights from Louisville to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Sun 8/9

9:24 pm-10:00 am

1 stop31h 36m

London Gatwick

Fri 8/21

2:00 pm-8:06 pm

2 stops35h 06m

$772

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/14

12:50 pm-9:15 am

1 stop15h 25m

London Heathrow

Wed 9/23

11:45 am-11:59 pm

2 stops17h 14m

$905

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/21

6:00 am-7:15 am

1 stop20h 15m

London Heathrow

Fri 10/2

6:30 am-7:06 pm

2 stops17h 36m

$905

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Sat 8/8

8:06 pm-10:00 am

2 stops32h 54m

London Gatwick

Wed 8/19

2:00 pm-4:29 pm

1 stop31h 29m

$906

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Mon 9/21

5:30 pm-4:00 pm

2 stops17h 30m

London Gatwick

Fri 10/2

10:25 am-11:59 pm

2 stops18h 34m

$915

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Sun 11/8

1:00 pm-9:00 am

2 stops15h 00m

London Gatwick

Tue 11/17

10:00 am-8:51 pm

2 stops15h 51m

$915

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Mon 9/21

12:31 pm-9:40 am

2 stops16h 09m

London Gatwick

Fri 10/2

10:25 am-11:59 pm

2 stops18h 34m

$915

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Tue 9/22

1:15 pm-9:25 am

2 stops15h 10m

London Gatwick

Wed 10/7

10:25 am-8:51 pm

2 stops15h 26m

$916

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 9/14

2:42 pm-9:30 am

2 stops13h 48m

London City

Wed 9/23

9:20 am-9:12 pm

2 stops16h 52m

$932

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Fri 8/7

8:28 pm-10:00 am

2 stops32h 32m

London Gatwick

Sat 8/15

2:00 pm-2:40 pm

1 stop29h 40m

$950

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/7

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Louisville to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to London in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Louisville-London flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Louisville-London flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Louisville-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Louisville-London flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Louisville-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Louisville to London

Have a flexible travel schedule? Discover the best time to fly to London from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Louisville to London

What is the cheapest month to book a flight from Louisville to London?

Currently, April is the cheapest month in which you can book a flight from Louisville to London (average of $451). Flying from Louisville to London in June is currently the most expensive (average of $948). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Louisville to London?

What’s the top layover airport for flights from Louisville to London?

Share of 1-stop round-trip flights from Louisville to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Atlanta (ATL) – chosen by Cheapflights users on 38% of 1-stop itineraries from Louisville to London on Cheapflights.

What’s the cheapest layover airport for flights from Louisville to London?

Average round-trip fare for 1-stop flights from Louisville to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Charlotte (CLT) is the most affordable 1-stop option, with an average round-trip price of $620.

What’s the fastest layover option from Louisville to London?

Shortest average travel time for 1-stop one-way flights from Louisville to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Charlotte (CLT) have the shortest average one-way travel time for 1-stop routes: 10h 13m.

Which airport typically offers the quickest layover for flights from Louisville to London?

Average layover duration for 1-stop one-way flights from Louisville to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average layover time of 1h 22m.

How far ahead should I book a flight from Louisville to London?

To ensure you get the cheapest price possible for a flight from Louisville to London, you should look to book at least 28 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated June 12, 2026.
Read through reviews of airlines operating flights from Louisville to London, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,401 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,401 reviews
Delta
7.9
Good
8,401 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,812 reviews
Delta
7.9
Good
8,401 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,645 reviews
Delta
7.9
Good
8,401 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
British Airways
6.7
Okay
8,046 reviews
Delta
7.9
Good
8,401 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Louisville to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to London?

    Louisville Intl (SDF) is the airport you will fly out of if you book a flight from Louisville to London. You should not have trouble finding flights to London from Louisville Intl; the airport handles an average of 0 outbound flights to London per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Louisville airport to London. It is only a 5.3 mi journey to Louisville Intl (SDF) from Louisville’s city center.

  • How long is the flight from Louisville to London?

    Departing from Louisville to London will take you 15h 25m. Airlines will cover a distance of 4033 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Louisville to London round-trip?

    Currently priced at $574, KLM will fly you from Louisville to London and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and Delta - these airlines can fly you to your destination from $577 and $588, respectively. These flights start at 40% lower than the current average price 3 months from now.

  • What are the most popular routes from Louisville to London?

    When deciding which route to take from Louisville to London consider Louisville Intl - London Heathrow, Louisville Intl - London City or Louisville Intl - London Gatwick as they are the most popular.

  • Can I find deals for flights from Louisville to London that include hotel bookings?

    Yes. In addition to deals on Louisville to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to London.

  • Can I find deals for business class flights from Louisville to London?

    Yes. Cheapflights offers flight deals from Louisville to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Louisville to London?

    Currently, April is the cheapest month in which you can book a flight from Louisville to London (average of $451). Flying from Louisville to London in June is currently the most expensive (average of $948). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Stansted

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Louisville to London

Discover the top 6 airlines that operate flights from Louisville to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$574Average$716FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$577Average$774FlexibilityNo cancel feeOn-time72%
DeltaCheapest$588Average$859FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$589Average$982FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$655Average$999FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$678Average$1,091FlexibilityNo cancel feeOn-time69%

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