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$211+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LON
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to London are usually found in August or October, booked 90 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap 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 julio 3, 2025.

Round-trip from

$570
(Delta)

One-way from

$211
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$1,179
From Louisville Intl to London (LON)
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One-way flight from Louisville Intl to London (LON)
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Highest demand for flights based on searches. 18% potential increase in price ($227 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julio 3, 2025.

This Delta deal was found by Cheapflights users on 7/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/274:20 pmSDF - LHR
1 stop10h 45mDelta
mié. 9/311:30 amLHR - SDF
2 stops17h 26mDelta
Deal found 7/3$570
This Virgin Atlantic deal was found by Cheapflights users on 7/3. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/2712:45 pmSDF - LHR
2 stops13h 30mVirgin Atlantic
mié. 9/311:30 amLHR - SDF
2 stops16h 12mVirgin Atlantic
Deal found 7/3$575
This KLM deal was found by Cheapflights users on 7/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/273:11 pmSDF - LHR
1 stop10h 34mKLM
mié. 9/33:15 pmLHR - SDF
1 stop13h 41mKLM
Deal found 7/3$579
This Mytrip deal was found by Cheapflights users on 7/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/57:45 amSDF - LGW
2 stops17h 35mMultiple Airlines
vie. 9/122:00 pmLGW - SDF
1 stop14h 35mMultiple Airlines
Deal found 7/3$583
This Gotogate deal was found by Cheapflights users on 7/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/239:05 amSDF - LHR
2 stops16h 25mMultiple Airlines
mar. 10/79:30 amLHR - SDF
2 stops15h 57mMultiple Airlines
Deal found 7/3$619
This United Airlines deal was found by Cheapflights users on 7/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/211:00 pmSDF - LHR
2 stops15h 35mUnited Airlines
mar. 9/302:05 pmLHR - SDF
2 stops26h 28mUnited Airlines
Deal found 7/3$632
This Justfly.com deal was found by Cheapflights users on 7/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/24:51 pmSDF - LHR
1 stop14h 54mBritish Airways
jue. 9/1112:00 pmLHR - SDF
1 stop13h 50mBritish Airways
Deal found 7/2$643
This Finnair deal was found by Cheapflights users on 7/1. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/156:08 pmSDF - LHR
1 stop13h 07mFinnair
vie. 8/228:20 amLHR - SDF
1 stop16h 42mFinnair
Deal found 7/1$704
This Mytrip deal was found by Cheapflights users on 7/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/237:36 pmSDF - LCY
2 stops17h 59mLufthansa
mar. 10/78:45 amLCY - SDF
2 stops17h 03mLufthansa
Deal found 7/3$710
This Iberia deal was found by Cheapflights users on 7/1. 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.
mié. 7/1610:04 amSDF - LHR
1 stop16h 16mIberia
jue. 7/242:25 pmLHR - SDF
1 stop13h 45mIberia
Deal found 7/1$714
This Air Canada deal was found by Cheapflights users on 7/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/129:55 amSDF - LHR
2 stops16h 15mAir Canada
lun. 11/171:00 pmLHR - SDF
2 stops28h 29mAir Canada
Deal found 7/3$732
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/412:45 pmSDF - LGW
2 stops16h 15mDelta
lun. 9/812:00 pmLGW - SDF
2 stops16h 56mDelta
Deal found 7/1$760

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 julio 3, 2025.
Use the filters below to find and compare flights from Louisville to London that are best for you.

Fly from

Louisville

Fly to

London

Route

Depart

Return

Price

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mié. 8/27

4:20 pm-8:05 am

1 stop10h 45m

London Heathrow

mié. 9/3

11:30 am-11:56 pm

2 stops17h 26m

$570

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mié. 8/27

12:45 pm-7:15 am

2 stops13h 30m

London Heathrow

mié. 9/3

11:30 am-10:42 pm

2 stops16h 12m

$575

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mié. 8/27

3:11 pm-6:45 am

1 stop10h 34m

London Heathrow

mié. 9/3

3:15 pm-11:56 pm

1 stop13h 41m

$579

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

vie. 9/5

7:45 am-6:20 am

2 stops17h 35m

London Gatwick

vie. 9/12

2:00 pm-11:35 pm

1 stop14h 35m

$583

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mar. 9/23

9:05 am-6:30 am

2 stops16h 25m

London Heathrow

mar. 10/7

9:30 am-8:27 pm

2 stops15h 57m

$619

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

dom. 9/21

1:59 pm-8:20 am

1 stop13h 21m

London Heathrow

mar. 9/30

2:05 pm-11:33 am

2 stops26h 28m

$632

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mar. 9/2

4:51 pm-12:45 pm

1 stop14h 54m

London Heathrow

jue. 9/11

12:00 pm-8:50 pm

1 stop13h 50m

$643

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

vie. 8/15

6:08 pm-12:15 pm

1 stop13h 07m

London Heathrow

vie. 8/22

10:30 am-8:02 pm

1 stop14h 32m

$704

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

mar. 9/23

7:36 pm-6:35 pm

2 stops17h 59m

London City

mar. 10/7

8:45 am-8:48 pm

2 stops17h 03m

$710

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

mié. 7/16

10:04 am-7:20 am

1 stop16h 16m

London Heathrow

jue. 7/24

2:25 pm-11:10 pm

1 stop13h 45m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 34 results
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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

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to London. Price data was last updated on June 27, 2025.

To ensure you get the cheapest price possible for a flight from Louisville to London, you should look to book at least 89 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.

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

Currently, November is the cheapest month in which you can book a flight from Louisville to London (average of $661). Flying from Louisville to London in June is currently the most expensive (average of $1,098). 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.

What is the cheapest time of day to fly from SDF to LON?

Find hourly flight availability from Louisville to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 3, 2025.

It’s typically best to fly out from Louisville to London in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Louisville to London?

Use this chart to determine the cheapest time to fly round-trip from Louisville to London. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Louisville to London flight should consider departing on Saturday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 julio 3, 2025.
Read through reviews of airlines operating flights from Louisville to London, such as Delta, KLM, and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,970 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,366 reviews
Delta
8.0
Very good
7,970 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,306 reviews
Delta
8.0
Very good
7,970 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,845 reviews
Delta
8.0
Very good
7,970 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very good
7,970 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 5 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.

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

    Currently priced at $570, Delta will fly you from Louisville to London and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and KLM - these airlines can fly you to your destination from $575 and $579, respectively. These flights start at 41% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Louisville to London one-way?

    $411 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Iberia and KLM, with prices starting from $415 and $437, respectively.

  • 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 Gatwick or Louisville Intl - London City 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, November is the cheapest month in which you can book a flight from Louisville to London (average of $661). Flying from Louisville to London in June is currently the most expensive (average of $1,098). 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 Louisville?

Book flights to Louisville if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Aylesbury
Chelmsford
Brentwood
Chichester
Arundel
Milton Keynes
Bishop's Stortford
Dartford

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Top 5 airlines flying from Louisville to London

Discover the top 5 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$619Average$796FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$692Average$926FlexibilityNo cancel feeOn-time71%
DeltaCheapest$713Average$1,038FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$734Average$996FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$776Average$1,343FlexibilityNo cancel feeOn-time72%

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