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

United Airlines and British Airways can get you from Kentucky to London Heathrow Airport in just under 16h 25m. Your travel time can differ by up to 18h 25m. Kentucky and London Heathrow Airport are separated by a distance of 3995 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.

£243+ Cheap Flights from Kentucky to London Heathrow Airport

Cheap flight deals from Kentucky to Heathrow

Enter your travel dates to find the best prices.

Cheapest

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 12 October 2026.

Tue 10/1113:14 -

1 stop14h 21m

Tue 17/1106:05 -

2 stops20h 31m

Deal found 11/10£667

Mon 9/1111:26 -

1 stop14h 29m

Mon 16/1119:40 -

2 stops33h 08m

Deal found 11/10£682

Tue 8/1213:45 -

1 stop17h 15m

Tue 15/1206:35 -

2 stops22h 21m

Deal found 7/10£689

Tue 10/1118:16 -

1 stop11h 09m

Tue 17/1114:10 -

1 stop14h 28m

Deal found 11/10£692

Tue 8/1207:00 -

2 stops19h 10m

Tue 15/1206:35 -

2 stops20h 57m

Deal found 7/10£692

Wed 2/1206:15 -

1 stop10h 05m

Mon 14/1211:05 -

2 stops37h 30m

Deal found 12/10£698

Wed 18/1110:13 -

1 stop19h 12m

Mon 23/1107:30 -

2 stops19h 07m

Deal found 11/10£705

Thu 26/1111:20 -

1 stop14h 35m

Thu 3/1207:30 -

2 stops21h 21m

Deal found 11/10£705

Thu 3/1219:22 -

1 stop11h 13m

Thu 10/1206:15 -

2 stops22h 36m

Deal found 7/10£706

Mon 12/1017:19 -

1 stop12h 31m

Thu 22/1006:10 -

2 stops20h 25m

Deal found 9/10£708

Thu 26/1113:14 -

2 stops22h 21m

Thu 3/1207:30 -

2 stops19h 07m

Deal found 12/10£711

Thu 26/1113:14 -

1 stop12h 41m

Thu 3/1211:45 -

1 stop16h 09m

Deal found 12/10£713

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 12 October 2026.

Tue 2/315:50 -

1 stop34h 50m

Fri 5/306:50 -

2 stops16h 14m

Deal found 8/10£577

Thu 3/1211:10 -

1 stop16h 25m

Thu 10/1206:15 -

2 stops22h 36m

Deal found 11/10£711

Tue 24/1112:19 -

1 stop14h 56m

Tue 1/1209:55 -

1 stop14h 43m

Deal found 10/10£739

Tue 2/208:50 -

2 stops31h 10m

Tue 16/213:00 -

2 stops29h 02m

Deal found 9/10£671

Fri 6/1118:54 -

1 stop11h 41m

Wed 11/1119:40 -

2 stops33h 08m

Deal found 7/10£720

Tue 23/209:00 -

2 stops31h 00m

Tue 16/307:40 -

1 stop13h 14m

Deal found 9/10£686

Mon 23/1111:20 -

1 stop16h 15m

Mon 30/1119:40 -

2 stops33h 02m

Deal found 9/10£729

Mon 15/213:55 -

1 stop11h 00m

Fri 19/210:25 -

1 stop14h 49m

Deal found 10/10£689

Tue 8/1213:45 -

1 stop17h 15m

Tue 15/1206:35 -

2 stops22h 21m

Deal found 7/10£689

Mon 22/313:55 -

1 stop12h 00m

Tue 6/411:05 -

1 stop14h 09m

Deal found 9/10£693

Sun 21/211:10 -

1 stop15h 45m

Sat 13/306:35 -

2 stops31h 25m

Deal found 11/10£708

Wed 28/1014:10 -

1 stop13h 45m

Fri 13/1106:50 -

2 stops18h 44m

Deal found 10/10£726

Mon 2/1117:57 -

1 stop13h 03m

Fri 13/1106:50 -

2 stops17h 40m

Deal found 10/10£726

Thu 3/1210:50 -

2 stops15h 20m

Thu 10/1209:00 -

2 stops18h 32m

Deal found 7/10£728

Mon 16/1113:49 -

1 stop17h 11m

Wed 18/1106:50 -

2 stops15h 40m

Deal found 9/10£838

Find flight deals from Kentucky to Heathrow

Round-trip from	£575
One-way from	£243
Popular in	June
Cheapest in	January
Average price	£794

United Airlines
6/3-9/3
4 total stops
47h 50m 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 (£105 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£15 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

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 12/1

13:02-09:15

1 stop15h 13m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£243

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 12/1

08:50-21:00

2 stops31h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Sun 31/1

11:55-12:05

2 stops19h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Sun 21/2

09:42-07:20

1 stop16h 38m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£250

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Sun 28/2

09:00-09:10

2 stops19h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Sun 21/2

11:10-06:40

2 stops14h 30m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 9/11

07:30-08:05

2 stops19h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£322

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Tue 24/11

07:30-16:50

2 stops28h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£329

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 9/11

12:40-07:05

1 stop13h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£350

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 23/11

10:01-08:35

1 stop17h 34m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£353

Flights are sorted by cheapest return flights first.

Deals found on 10/10

Showing 1-10 of 33 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.

SDF-LHR

LEX-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

SDF-LHR

LEX-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 £1,120). 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 £842 in March.
The cheapest return price found within the last 5 days was £575 on United Airlines (6 Mar–9 Mar).

Related info for your journey

How long is the flight from Kentucky to London Heathrow Airport?
United Airlines and British Airways can get you from Kentucky to London Heathrow Airport in just under 16h 25m. Your travel time can differ by up to 18h 25m. Kentucky and London Heathrow Airport are separated by a distance of 3995 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 £1,120). 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 £243

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 12 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 12 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 12 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 12 October 2026.

Last-minute flights from Kentucky to HeathrowDiscover last-minute flight deals from Kentucky to Heathrow. Data last updated 12 October 2026 and is based on user searches.

Discover last-minute flight deals from Kentucky to Heathrow. Data last updated 12 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 12 October 2026.

Search for one-way flight options from Kentucky to Heathrow. Find affordable one-way fares based on user searches. Data last updated 12 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 £842 in March.The cheapest return price found within the last 5 days was £575 on United Airlines (6 Mar–9 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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Other flights to Heathrow

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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 12 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 12 October 2026.

Last-minute flights from Kentucky to Heathrow
Discover last-minute flight deals from Kentucky to Heathrow. Data last updated 12 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 12 October 2026.

Kentucky to London Heathrow Airport flights typically cost between £667 and £842 in March.
The cheapest return price found within the last 5 days was £575 on United Airlines (6 Mar–9 Mar).