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

Currently priced at $639, Iberia will fly you from Louisville to London and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and British Airways - these airlines can fly you to your destination from $644 and $651, respectively. These flights start at 35% lower than the current average price 3 months from now.

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

$461 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on WestJet and Aer Lingus, with prices starting from $462 and $564, 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 City or Louisville Intl - London Gatwick as they are the most popular.

What are the most popular airlines that fly from Louisville to London?

Before booking your flight from Louisville to London check out the most popular airlines for this route: American Airlines, British Airways or Delta.

What is the cheapest day to fly round-trip from Louisville to London?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to London. Check prices with Cheapflights to find a great deal for your trip.

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

Find a great deal and save up to 89% by booking at least 14 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Louisville to London within the next two weeks, with the cheapest ticket starting at $632.

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

The best pricing can be found in the month of October. Prices to London from Louisville average $986. You can even find prices in October for less than $986, as users have found deals to London from as low as $597. The month of December appears to be one of the more expensive times to travel to London from Louisville. Flying in the targeted month can save you up to 30%.

Most accurate provider : When it comes to deals on Louisville-London flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Louisville-London flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

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.

$373+ Flights from Louisville to London - Compare & Save Big

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Find cheap flights from Louisville to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Louisville Intl to London are usually found in October or September, booked 74 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Louisville to London

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$639 (Orbitz)
One-way from	$409 (Kiwi.com)
Popular in	December
Cheapest in	October
Average price	$1,124

Provider with most accurate pricing for Louisville Intl-London (LON) flight deals.

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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. 17% potential increase in price ($204 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 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 May 1, 2025.

Mon 9/292:37 pmSDF - LHR

1 stop11h 43mIberia

Mon 10/67:25 pmLHR - SDF

2 stops27h 59mIberia

Deal found 4/30

$639

Tue 9/25:45 pmSDF - LHR

1 stop14h 45mDelta

Thu 9/116:15 amLHR - SDF

2 stops16h 24mDelta

Deal found 4/29

$644

Mon 9/296:34 amSDF - LHR

2 stops25h 41mBritish Airways

Mon 10/67:25 pmLHR - SDF

2 stops32h 38mBritish Airways

Deal found 4/30

$651

Mon 9/112:40 pmSDF - LGW

2 stops16h 20mDelta

Mon 9/812:00 pmLGW - SDF

2 stops15h 30mDelta

Deal found 4/30

$666

Wed 9/39:00 amSDF - LHR

2 stops16h 30mUnited Airlines

Fri 9/122:05 pmLHR - SDF

2 stops28h 12mUnited Airlines

Deal found 4/30

$670

Tue 5/66:15 amSDF - LGW

2 stops19h 20mAmerican Airlines

Tue 5/1312:20 pmLGW - SDF

2 stops16h 58mAmerican Airlines

Deal found 4/29

$686

Sun 8/242:59 pmSDF - LHR

2 stops14h 16mVirgin Atlantic

Sun 8/3111:30 amLHR - SDF

2 stops15h 46mVirgin Atlantic

Deal found 4/30

$700

Sun 10/126:15 amSDF - LHR

2 stops19h 15mAir Canada

Fri 11/142:30 pmLHR - SDF

2 stops27h 47mAir Canada

Deal found 4/30

$710

Mon 9/16:21 pmSDF - LCY

2 stops36h 09mBritish Airways

Mon 9/83:30 pmLCY - SDF

2 stops33h 17mBritish Airways

Deal found 4/30

$712

Fri 9/51:30 pmSDF - LHR

2 stops50h 30mMultiple Airlines

Fri 10/36:30 amLHR - SDF

2 stops20h 54mMultiple Airlines

Deal found 4/28

$725

Tue 10/141:59 pmSDF - LCY

2 stops17h 31mMultiple Airlines

Tue 10/218:45 amLCY - SDF

2 stops16h 48mMultiple Airlines

Deal found 4/30

$725

Mon 6/29:55 amSDF - LGW

2 stops28h 15mMultiple Airlines

Mon 6/92:00 pmLGW - SDF

1 stop27h 03mMultiple Airlines

Deal found 4/28

$726

Best flights from Louisville to London
Discover carefully curated flight deals from Louisville to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Mon 9/292:37 pmSDF - LHR

1 stop11h 43mIberia

Mon 10/67:25 pmLHR - SDF

2 stops27h 59mIberia

Deal found 4/30

$639

Tue 9/25:45 pmSDF - LHR

1 stop14h 45mDelta

Thu 9/116:15 amLHR - SDF

2 stops16h 24mDelta

Deal found 4/29

$644

Mon 9/296:34 amSDF - LHR

2 stops25h 41mBritish Airways

Mon 10/67:25 pmLHR - SDF

2 stops32h 38mBritish Airways

Deal found 4/30

$651

Wed 9/39:00 amSDF - LHR

2 stops16h 30mUnited Airlines

Fri 9/122:05 pmLHR - SDF

2 stops28h 12mUnited Airlines

Deal found 4/30

$670

Tue 5/66:15 amSDF - LGW

2 stops19h 20mAmerican Airlines

Tue 5/1312:20 pmLGW - SDF

2 stops16h 58mAmerican Airlines

Deal found 4/29

$686

Sun 8/242:59 pmSDF - LHR

2 stops14h 16mVirgin Atlantic

Sun 8/3111:30 amLHR - SDF

2 stops15h 46mVirgin Atlantic

Deal found 4/30

$700

Sun 10/126:15 amSDF - LHR

2 stops19h 15mAir Canada

Fri 11/142:30 pmLHR - SDF

2 stops27h 47mAir Canada

Deal found 4/30

$710

Fri 9/51:30 pmSDF - LHR

2 stops50h 30mMultiple Airlines

Fri 10/36:30 amLHR - SDF

2 stops20h 54mMultiple Airlines

Deal found 4/28

$725

Tue 10/79:55 amSDF - LCY

2 stops17h 15mLufthansa

Tue 10/148:45 amLCY - SDF

2 stops19h 13mLufthansa

Deal found 4/30

$773

Fri 8/295:45 pmSDF - LHR

1 stop12h 25mKLM

Fri 9/51:05 pmLHR - SDF

1 stop12h 47mKLM

Deal found 4/30

$777

Tue 10/142:59 pmSDF - LHR

2 stops20h 01mScandinavian Airlines

Mon 10/206:40 amLHR - SDF

2 stops22h 16mScandinavian Airlines

Deal found 4/30

$887

Wed 10/12:37 pmSDF - LHR

2 stops17h 48mAer Lingus

Sat 10/49:10 pmLHR - SDF

2 stops26h 14mAer Lingus

Deal found 4/29

$1,124

Last-minute flights from Louisville to London
Discover last-minute flight deals from Louisville to London. Data last updated May 1, 2025 and is based on user searches.

Thu 5/11:32 pmSDF - LGW

1 stop15h 28mMultiple Airlines

Wed 5/72:00 pmLGW - SDF

1 stop25h 18mMultiple Airlines

Deal found 4/30

$809

Sat 5/35:30 pmSDF - LHR

2 stops20h 00mScandinavian Airlines

Mon 5/56:40 amLHR - SDF

2 stops21h 09mScandinavian Airlines

Deal found 4/29

$1,014

Tue 5/66:00 pmSDF - LHR

1 stop9h 55mDelta

Tue 5/1311:30 amLHR - SDF

2 stops14h 56mDelta

Deal found 4/29

$645

Tue 5/66:15 amSDF - LGW

2 stops19h 20mAmerican Airlines

Tue 5/1312:20 pmLGW - SDF

2 stops16h 58mAmerican Airlines

Deal found 4/29

$686

Tue 5/65:17 pmSDF - LHR

1 stop12h 13mIberia

Tue 5/132:25 pmLHR - SDF

1 stop11h 38mIberia

Deal found 4/29

$692

Tue 5/67:00 amSDF - LHR

2 stops18h 30mUnited Airlines

Thu 5/2212:15 pmLHR - SDF

1 stop12h 31mUnited Airlines

Deal found 4/29

$733

Tue 5/65:17 pmSDF - LHR

1 stop12h 13mBritish Airways

Tue 5/136:10 amLHR - SDF

2 stops19h 53mBritish Airways

Deal found 4/29

$735

Tue 5/66:00 amSDF - LHR

2 stops19h 30mAir Canada

Thu 5/228:30 amLHR - SDF

2 stops18h 44mAir Canada

Deal found 4/29

$739

Tue 5/610:08 amSDF - LCY

2 stops17h 02mLufthansa

Tue 5/138:45 amLCY - SDF

2 stops16h 02mLufthansa

Deal found 4/29

$770

Tue 5/611:05 amSDF - LCY

2 stops18h 05mBritish Airways

Tue 5/1311:20 amLCY - SDF

2 stops38h 43mBritish Airways

Deal found 4/29

$846

Tue 5/65:05 amSDF - LGW

3 stops28h 35mMultiple Airlines

Tue 5/136:40 amLGW - SDF

2 stops37h 16mMultiple Airlines

Deal found 4/29

$883

Tue 5/62:41 pmSDF - LCY

2 stops13h 49mDelta

Thu 5/228:40 amLCY - SDF

2 stops14h 49mDelta

Deal found 4/29

$1,167

One-way flights from Louisville to London
Search for one-way flight options from Louisville to London. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Mon 5/129:55 amSDF - LHR

2 stops23h 20mMultiple Airlines

Deal found 4/29

$409

Tue 5/132:38 pmSDF - LHR

2 stops15h 22mDelta

Deal found 4/29

$461

Wed 6/47:50 amSDF - LGW

3 stops20h 35mWestJet

Deal found 4/30

$462

Wed 6/43:51 pmSDF - LGW

2 stops22h 04mMultiple Airlines

Deal found 4/30

$489

Sun 5/112:38 pmSDF - LCY

2 stops13h 52mDelta

Deal found 4/29

$501

Mon 5/129:55 amSDF - LCY

3 stops25h 30mMultiple Airlines

Deal found 4/29

$533

Wed 6/43:51 pmSDF - SEN

2 stops23h 59mMultiple Airlines

Deal found 4/30

$561

Wed 5/1411:51 amSDF - LHR

2 stops20h 34mAer Lingus

Deal found 4/30

$564

Wed 5/1411:51 amSDF - LHR

1 stop14h 29mBritish Airways

Deal found 4/29

$599

Sat 5/176:07 pmSDF - LHR

2 stops31h 28mAir Canada

Deal found 4/29

$606

Sat 5/176:07 pmSDF - LHR

1 stop33h 13mUnited Airlines

Deal found 4/29

$612

Wed 6/45:17 pmSDF - LHR

1 stop12h 13mIberia

Deal found 4/30

$692

Cheapflights Fare Finder

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

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/29

2:37 pm-7:20 am

1 stop11h 43m

London Heathrow

Mon 10/6

7:25 pm-6:24 pm

2 stops27h 59m

$639

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 9/2

5:45 pm-1:30 pm

1 stop14h 45m

London Heathrow

Thu 9/11

6:15 am-5:39 pm

2 stops16h 24m

$644

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Mon 9/29

6:34 am-1:15 pm

2 stops25h 41m

London Heathrow

Mon 10/6

7:25 pm-11:03 pm

2 stops32h 38m

$651

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Wed 9/3

9:00 am-6:30 am

2 stops16h 30m

London Heathrow

Fri 9/12

2:05 pm-1:17 pm

2 stops28h 12m

$670

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Tue 5/6

6:15 am-6:35 am

2 stops19h 20m

London Gatwick

Tue 5/13

12:20 pm-12:18 am

2 stops16h 58m

$686

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sun 10/12

6:15 am-6:30 am

2 stops19h 15m

London Heathrow

Fri 11/14

2:30 pm-1:17 pm

2 stops27h 47m

$710

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Mon 9/1

6:21 pm-11:30 am

2 stops36h 09m

London City

Mon 9/8

3:30 pm-7:47 pm

2 stops33h 17m

$712

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Fri 9/5

1:30 pm-9:00 pm

2 stops50h 30m

London Heathrow

Fri 10/3

6:30 am-10:24 pm

2 stops20h 54m

$725

LouisvilleLondon

SDF - LCY

SDFLCY

Louisville Intl

Tue 10/14

1:59 pm-12:30 pm

2 stops17h 31m

London City

Tue 10/21

8:45 am-8:33 pm

2 stops16h 48m

$725

LouisvilleLondon

SDF - LGW

SDFLGW

Louisville Intl

Mon 6/2

9:55 am-7:10 pm

2 stops28h 15m

London Gatwick

Mon 6/9

2:00 pm-12:03 pm

1 stop27h 03m

$726

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 40 results

Compare providers for flights from Louisville to London

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Louisville to London in May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Louisville-London flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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

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 74 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 $1,103). 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?

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?

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.

Rainfall in London by month

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and United Airlines from Louisville to London. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,934 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.4

Good

643 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Scandinavian Airlines

7.3

Good

1,349 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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 $639, Iberia will fly you from Louisville to London and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and British Airways - these airlines can fly you to your destination from $644 and $651, respectively. These flights start at 35% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Louisville to London one-way?
$461 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on WestJet and Aer Lingus, with prices starting from $462 and $564, 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 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, 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 $1,103). 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

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Thornton Heath

Luton

Horley

Canterbury

Harrow

Wembley

Dover

Gatwick

Orpington

Watford

Croydon

Borehamwood

Folkestone

Ilford

Aylesbury

Sutton

Chelmsford

Brentwood

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Louisville to London

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$704	Average$1,038	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$710	Average$984	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$720	Average$905	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$734	Average$996	FlexibilityNo cancel fee	On-time69%
Virgin Atlantic	Cheapest$777	Average$1,242	FlexibilityNo cancel fee	On-time72%

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$373+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Louisville to London with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Louisville Intl to London are usually found in October or September, booked 74 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Louisville to London

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Louisville to London

Cheapest flights from Louisville to LondonExplore 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 May 1, 2025.

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 May 1, 2025.

Cheapflights Fare Finder

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

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 May.

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.

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 April 25, 2025.

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

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 May 1, 2025.

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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

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 May 1, 2025.

Read reviews from past customers who have flown Delta, KLM and United Airlines from Louisville to London. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

What are the most popular routes from Louisville to London?

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

How can I find direct flights from Louisville to London?

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

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

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Alternative routes for Louisville to London

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Top 5 airlines flying from Louisville to London

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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 May 1, 2025.