How long is the flight from Kentucky to London Heathrow Airport?

United Airlines, Delta, and British Airways can get you from Kentucky to London Heathrow Airport in just under 15h 29m. Your travel time can differ by up to 19h 21m. Kentucky and London Heathrow Airport are separated by a distance of 4033 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Kentucky to London Heathrow Airport?

When deciding which route to take from Kentucky to London Heathrow Airport consider Nashville Intl - London Heathrow, Cincinnati Cinci./N. Kentucky - London Heathrow or Louisville Intl - London Heathrow as they are the most popular.

What is the cheapest time of day to fly from KY to LHR?

When flying from Kentucky to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Kentucky to Heathrow that include hotel bookings?

Yes. In addition to deals on Kentucky to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Kentucky to Heathrow?

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

Can I find deals for business class flights from Kentucky to Heathrow?

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

£244+ Cheap Flights from Kentucky to London Heathrow Airport

Cheap flight deals from Kentucky to Heathrow

Enter your travel dates to find the best prices.

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Best

Last-minute

One-way

Cheapest flights from Kentucky to Heathrow
Explore the most affordable flight options available from Kentucky to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2026.

Mon 2/1110:13 -

1 stop17h 22m

Tue 17/1107:30 -

2 stops19h 06m

Deal found 30/9£649

Wed 11/1113:14 -

1 stop16h 11m

Wed 18/1106:15 -

2 stops20h 21m

Deal found 29/9£650

Mon 2/1118:31 -

1 stop10h 54m

Tue 17/1112:15 -

1 stop14h 12m

Deal found 30/9£666

Wed 28/1011:15 -

1 stop15h 05m

Fri 13/1106:50 -

2 stops15h 47m

Deal found 29/9£667

Wed 4/1111:17 -

2 stops14h 53m

Wed 11/1109:00 -

2 stops18h 30m

Deal found 30/9£669

Mon 2/1110:27 -

2 stops15h 13m

Tue 17/1109:00 -

2 stops18h 30m

Deal found 1/10£669

Wed 28/1010:27 -

2 stops16h 43m

Wed 11/1111:10 -

2 stops16h 20m

Deal found 28/9£670

Wed 28/1013:59 -

2 stops13h 46m

Fri 13/1111:45 -

2 stops14h 28m

Deal found 29/9£671

Thu 12/1111:26 -

1 stop17h 59m

Thu 19/1107:30 -

2 stops21h 12m

Deal found 28/9£688

Tue 27/1013:50 -

1 stop14h 05m

Tue 3/1107:40 -

1 stop14h 50m

Deal found 29/9£690

Fri 13/1111:23 -

1 stop14h 32m

Fri 20/1106:15 -

2 stops22h 27m

Deal found 29/9£692

Thu 3/1211:10 -

1 stop16h 25m

Thu 10/1206:15 -

2 stops22h 36m

Deal found 30/9£694

Best flights from Kentucky to Heathrow
Discover carefully curated flight deals from Kentucky to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 October 2026.

Tue 2/315:50 -

1 stop34h 50m

Fri 5/306:50 -

2 stops15h 04m

Deal found 29/9£577

Wed 17/210:05 -

1 stop17h 55m

Wed 17/306:30 -

2 stops18h 51m

Deal found 1/10£681

Wed 10/310:26 -

1 stop15h 29m

Wed 14/412:55 -

1 stop15h 16m

Deal found 29/9£692

Thu 29/1017:35 -

1 stop12h 50m

Thu 5/1110:05 -

1 stop15h 54m

Deal found 29/9£712

Tue 16/317:00 -

1 stop12h 15m

Sat 17/411:10 -

1 stop17h 38m

Deal found 1/10£730

Mon 23/1110:01 -

2 stops17h 04m

Fri 27/1108:50 -

2 stops19h 10m

Deal found 27/9£784

Thu 3/1213:30 -

2 stops24h 00m

Sun 6/1206:40 -

2 stops19h 14m

Deal found 29/9£792

Wed 28/1014:10 -

1 stop13h 45m

Fri 13/1106:50 -

2 stops18h 44m

Deal found 30/9£668

Wed 17/211:13 -

2 stops19h 52m

Wed 17/307:35 -

2 stops20h 14m

Deal found 1/10£710

Mon 23/1106:00 -

1 stop19h 25m

Tue 1/1216:00 -

1 stop13h 04m

Deal found 27/9£750

Tue 27/1013:50 -

1 stop14h 05m

Tue 3/1107:40 -

1 stop14h 50m

Deal found 29/9£690

Wed 17/213:00 -

1 stop14h 25m

Wed 17/307:40 -

1 stop13h 14m

Deal found 1/10£691

Sat 26/1207:05 -

1 stop18h 20m

Thu 7/106:30 -

2 stops15h 39m

Deal found 30/9£836

Thu 29/1009:02 -

1 stop16h 53m

Thu 5/1106:50 -

2 stops15h 12m

Deal found 1/10£706

Thu 29/1011:05 -

2 stops16h 35m

Thu 5/1106:50 -

2 stops18h 45m

Deal found 1/10£709

Sat 14/1118:15 -

1 stop30h 40m

Sat 21/1113:45 -

2 stops49h 28m

Deal found 30/9£712

Fri 13/1113:49 -

1 stop13h 06m

Fri 20/1107:40 -

1 stop16h 30m

Deal found 29/9£728

Fri 6/1109:55 -

2 stops15h 25m

Tue 10/1109:00 -

2 stops16h 52m

Deal found 28/9£730

Tue 24/1111:05 -

2 stops14h 35m

Tue 1/1209:00 -

2 stops18h 32m

Deal found 27/9£730

Fri 20/1113:45 -

1 stop11h 35m

Fri 27/1107:30 -

2 stops18h 22m

Deal found 27/9£781

Sat 5/1206:10 -

1 stop10h 10m

Mon 7/1210:00 -

1 stop16h 59m

Deal found 30/9£788

Sat 14/1118:15 -

2 stops31h 55m

Sun 29/1118:00 -

2 stops31h 37m

Deal found 29/9£804

Find flight deals from Kentucky to Heathrow

Round-trip from	£577
One-way from	£244
Popular in	June
Cheapest in	January
Average price	£843

United Airlines
2/3-5/3
3 total stops
49h 54m total
Kentucky to London

Search Deals

British Airways
12/1-31/12
1 total stop
15h 13m total
Kentucky to London

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£107 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£16 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Tue 5/1

11:17-06:55

1 stop14h 38m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£250

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 13/1

10:12-08:35

1 stop17h 23m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£250

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 13/1

10:43-07:15

2 stops15h 32m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 22/2

13:55-08:25

2 stops13h 30m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Tue 5/1

11:00-08:05

2 stops16h 05m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sat 16/1

18:29-06:55

1 stop31h 26m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£254

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 12/1

08:55-07:10

3 stops17h 15m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£260

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sat 10/10

17:19-09:05

2 stops34h 46m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£339

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Wed 4/11

10:37-05:55

1 stop14h 18m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£350

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sat 10/10

20:19-06:55

1 stop29h 36m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£365

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Showing 1-10 of 35 resultsSorted by cheapest first

Best time to book a flight from Kentucky to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Kentucky with our price prediction graph.

LEX-LHR

SDF-LHR

Estimated return 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 Kentucky to London Heathrow Airport

USKY-LHR

LEX-LHR

SDF-LHR

What is the cheapest month to book a flight from Kentucky to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from Kentucky to London Heathrow Airport (average of £486). Flying from Kentucky to London Heathrow Airport in June is currently the most expensive (average of £1,121). 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 for a return flight from Kentucky to London Heathrow Airport?

Airfare is below average for this route at the moment.

Kentucky to London Heathrow Airport flights typically cost between £667 and £843 in March.
The cheapest return price found within the last 5 days was £577 on United Airlines (2 Mar–5 Mar).

Related info for your journey

How long is the flight from Kentucky to London Heathrow Airport?
United Airlines, Delta, and British Airways can get you from Kentucky to London Heathrow Airport in just under 15h 29m. Your travel time can differ by up to 19h 21m. Kentucky and London Heathrow Airport are separated by a distance of 4033 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from Kentucky to London Heathrow Airport?
When deciding which route to take from Kentucky to London Heathrow Airport consider Nashville Intl - London Heathrow, Cincinnati Cinci./N. Kentucky - London Heathrow or Louisville Intl - London Heathrow as they are the most popular.
Can I find deals for flights from Kentucky to Heathrow that include hotel bookings?
Yes. In addition to deals on Kentucky to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Kentucky to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kentucky to Heathrow.
Can I find deals for business class flights from Kentucky to Heathrow?
Yes. Cheapflights offers flight deals from Kentucky to Heathrow 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 Kentucky to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Kentucky to London Heathrow Airport (average of £486). Flying from Kentucky to London Heathrow Airport in June is currently the most expensive (average of £1,121). 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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How does Cheapflights help users find flights from Kentucky to Heathrow?

Deals for Kentucky to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Kentucky to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Kentucky to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Kentucky to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Kentucky? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Kentucky to Heathrow become cheaper?

Not ready to book yet? You can track prices for flights from Kentucky to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Kentucky to London Heathrow Airport from £244

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Kentucky to Heathrow

Cheapest flights from Kentucky to HeathrowExplore the most affordable flight options available from Kentucky to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2026.

Explore the most affordable flight options available from Kentucky to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2026.

Best flights from Kentucky to HeathrowDiscover carefully curated flight deals from Kentucky to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 October 2026.

Discover carefully curated flight deals from Kentucky to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 October 2026.

Last-minute flights from Kentucky to HeathrowDiscover last-minute flight deals from Kentucky to Heathrow. Data last updated 2 October 2026 and is based on user searches.

Discover last-minute flight deals from Kentucky to Heathrow. Data last updated 2 October 2026 and is based on user searches.

One-way flights from Kentucky to HeathrowSearch for one-way flight options from Kentucky to Heathrow. Find affordable one-way fares based on user searches. Data last updated 2 October 2026.

Search for one-way flight options from Kentucky to Heathrow. Find affordable one-way fares based on user searches. Data last updated 2 October 2026.

Find flight deals from Kentucky to Heathrow

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

Best time to book a flight from Kentucky to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Kentucky with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Kentucky to London Heathrow Airport?

How much does it cost for a return flight from Kentucky to London Heathrow Airport?

Airfare is below average for this route at the moment.

Kentucky to London Heathrow Airport flights typically cost between £667 and £843 in March.The cheapest return price found within the last 5 days was £577 on United Airlines (2 Mar–5 Mar).

Related info for your journey

How long is the flight from Kentucky to London Heathrow Airport?

What are the most popular routes from Kentucky to London Heathrow Airport?

Can I find deals for flights from Kentucky to Heathrow that include hotel bookings?

How can I find direct flights from Kentucky to Heathrow?

Can I find deals for business class flights from Kentucky to Heathrow?

What is the cheapest month to book a flight from Kentucky to London Heathrow Airport?

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kentucky to Heathrow

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Complete your trip

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Search flights from Kentucky to Heathrow by cabin class

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Other flights to Heathrow

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How does Cheapflights help users find flights from Kentucky to Heathrow?

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Can Cheapflights find flights from Kentucky to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Kentucky to Heathrow become cheaper?

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Cheapest flights from Kentucky to Heathrow
Explore the most affordable flight options available from Kentucky to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2026.

Best flights from Kentucky to Heathrow
Discover carefully curated flight deals from Kentucky to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 October 2026.

Last-minute flights from Kentucky to Heathrow
Discover last-minute flight deals from Kentucky to Heathrow. Data last updated 2 October 2026 and is based on user searches.

One-way flights from Kentucky to Heathrow
Search for one-way flight options from Kentucky to Heathrow. Find affordable one-way fares based on user searches. Data last updated 2 October 2026.

Kentucky to London Heathrow Airport flights typically cost between £667 and £843 in March.
The cheapest return price found within the last 5 days was £577 on United Airlines (2 Mar–5 Mar).