Find flights
Deals
When to book
FAQs

Cheap flights from Kentucky to London Heathrow Airport from £228

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
14 Jun — 21 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Kentucky to Heathrow

Enter your travel dates to find the best prices.

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 15 May 2026.

Mon 16/1119:00
TRI
-
LHR
2 stops20h 35m
United Airlines
Wed 18/1113:45
LHR
-
TRI
2 stops39h 29m
United Airlines
Deal found 14/5£614
Tue 10/1115:50
SDF
-
LHR
1 stop13h 25m
United Airlines
Thu 12/1106:50
LHR
-
SDF
2 stops14h 59m
United Airlines
Deal found 11/5£622
Tue 10/1111:10
LEX
-
LHR
1 stop15h 45m
United Airlines
Thu 12/1106:50
LHR
-
LEX
2 stops18h 33m
United Airlines
Deal found 11/5£622
Tue 10/1117:20
SDF
-
LHR
1 stop10h 15m
Iberia
Fri 20/1110:45
LHR
-
SDF
2 stops17h 14m
Iberia
Deal found 15/5£643
Wed 9/919:07
SDF
-
LHR
1 stop10h 43m
Iberia
Tue 22/907:50
LHR
-
SDF
2 stops20h 08m
Iberia
Deal found 11/5£644
Sun 23/819:15
SDF
-
LHR
1 stop12h 00m
Iberia
Mon 7/919:25
LHR
-
SDF
2 stops31h 01m
Iberia
Deal found 15/5£646
Tue 10/1113:00
SDF
-
LHR
2 stops27h 40m
Scandinavian Airlines
Fri 20/1106:40
LHR
-
SDF
2 stops22h 22m
Scandinavian Airlines
Deal found 15/5£650
Mon 30/1115:55
TYS
-
LHR
2 stops20h 45m
Scandinavian Airlines
Wed 9/1206:40
LHR
-
TYS
2 stops22h 06m
Scandinavian Airlines
Deal found 14/5£651
Wed 21/1013:00
SDF
-
LHR
2 stops15h 20m
Scandinavian Airlines
Sun 25/1006:40
LHR
-
SDF
2 stops21h 22m
Scandinavian Airlines
Deal found 11/5£651
Wed 11/1111:04
LEX
-
LHR
1 stop18h 21m
British Airways
Wed 18/1107:35
LHR
-
LEX
2 stops21h 03m
British Airways
Deal found 12/5£651
Tue 3/1110:30
BNA
-
LHR
2 stops23h 30m
Scandinavian Airlines
Tue 10/1106:40
LHR
-
BNA
2 stops20h 05m
Scandinavian Airlines
Deal found 12/5£651
Tue 20/1015:24
SDF
-
LHR
2 stops19h 36m
Scandinavian Airlines
Fri 30/1006:40
LHR
-
SDF
2 stops21h 22m
Scandinavian Airlines
Deal found 12/5£651

Find flight deals from Kentucky to Heathrow

Keep the following information in mind while searching for Kentucky to Heathrow flight deals. Data was last updated 15 May 2026.

Round-trip from

£622

One-way from

£228

Popular in

June

Cheapest in

October

Average price

£826
United Airlines
  • United Airlines
  • 10/11-12/11
  • 3 total stops
  • 28h 24m total
  • Kentucky to London
Search Deals
British Airways
  • British Airways
  • 10/8
  • 1 total stop
  • 13h 56m total
  • Kentucky to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£132 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Kentucky to Heathrow 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 858,174 searches. Data last updated 15 May 2026.
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 - LHR

SDFLHR

Louisville Intl

Tue 10/11

11:00-07:10

2 stops15h 10m

London Heathrow

Thu 12/11

06:50-16:49

2 stops14h 59m

£624

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Tue 10/11

13:00-14:35

3 stops20h 35m

London Heathrow

Fri 20/11

07:05-00:02

3 stops21h 57m

£660

EvansvilleLondon

EVV - LHR

EVVLHR

Evansville Dress Regional

Thu 1/10

10:05-07:15

2 stops15h 10m

London Heathrow

Tue 6/10

09:55-22:03

2 stops18h 08m

£692

EvansvilleLondon

EVV - LHR

EVVLHR

Evansville Dress Regional

Thu 1/10

18:04-11:15

1 stop11h 11m

London Heathrow

Tue 6/10

12:55-23:28

1 stop16h 33m

£702

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Sun 1/11

14:30-09:00

1 stop13h 30m

London Heathrow

Wed 4/11

11:45-21:34

2 stops14h 49m

£718

BlountvilleLondon

TRI - LHR

TRILHR

Blountville Tri Cities TN/VA

Mon 7/9

15:50-11:20

1 stop14h 30m

London Heathrow

Wed 16/9

08:40-22:28

2 stops18h 48m

£718

BlountvilleLondon

TRI - LHR

TRILHR

Blountville Tri Cities TN/VA

Tue 1/9

12:49-06:25

1 stop12h 36m

London Heathrow

Fri 25/9

09:55-22:28

2 stops17h 33m

£719

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 2/9

07:00-06:30

2 stops18h 30m

London Heathrow

Wed 9/9

06:50-16:59

2 stops15h 09m

£720

LouisvilleLondon

SDF - LHR

SDFLHR

Louisville Intl

Sat 10/10

06:30-06:30

2 stops43h 00m

London Heathrow

Thu 15/10

07:25-00:05

2 stops21h 40m

£722

KnoxvilleLondon

TYS - LHR

TYSLHR

Knoxville McGhee Tyson

Wed 12/8

10:28-07:10

2 stops15h 42m

London Heathrow

Fri 21/8

06:30-17:19

2 stops15h 49m

£722

Flights are sorted by cheapest return flights first.

Deals found on 13/5

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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.
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

How far ahead should I book a flight from Kentucky to London Heathrow Airport?

The price you pay for your flight from Kentucky to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from Kentucky to London Heathrow Airport (average of £335). Flying from Kentucky to London Heathrow Airport in June is currently the most expensive (average of £703). 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?

Related info for your journey

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

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

    United Airlines, Scandinavian Airlines, and Delta can get you from Kentucky to London Heathrow Airport in just under 15h 10m. Your travel time can differ by up to 7h 50m. Kentucky and London Heathrow Airport are separated by a distance of 4111 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, April is the cheapest month in which you can book a flight from Kentucky to London Heathrow Airport (average of £335). Flying from Kentucky to London Heathrow Airport in June is currently the most expensive (average of £703). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Hounslow
Croydon
Wembley
Northampton
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kentucky to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
Newark to Gatwick flights
John F Kennedy Intl to Stansted flights
John F Kennedy Intl to London City flights
LaGuardia to Heathrow flights
Dulles Intl to Heathrow flights
LaGuardia to Gatwick flights
Boston to Heathrow flights
Los Angeles to Heathrow flights
Baltimore to Heathrow flights
Newark to London City flights
Newark to Stansted flights
Newark to Luton flights
San Francisco to Heathrow flights
Boston to Gatwick flights
O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Seattle to Heathrow flights
LaGuardia to Stansted flights
Hobby to Heathrow flights
Orlando to Heathrow flights
Philadelphia to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Atlanta to Heathrow flights
Dulles Intl to London City flights
Boston to London City flights
Los Angeles to Gatwick flights
George Bush Intcntl to Heathrow flights
Miami to Heathrow flights
Boston to Stansted flights
Baltimore to Gatwick flights
Los Angeles to Stansted flights
Reagan-National to Gatwick flights
Los Angeles to London City flights
Denver to Heathrow flights
O'Hare Intl to Gatwick flights
San Francisco to Gatwick flights
O'Hare Intl to Stansted flights
San Francisco to London City flights
O'Hare Intl to London City flights
Orlando to Gatwick flights
San Francisco to Stansted flights
Tampa to Heathrow flights
Dulles Intl to Luton flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.