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Cheap flights from Kentucky to London Heathrow Airport from £137

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LHR
4 Sep — 11 Sep1
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 5 August 2026.

Mon 2/1119:49 -
2 stops30h 21m
Wed 4/1113:45 -
2 stops39h 04m
Deal found 3/8£567
Mon 2/1115:45 -
1 stop12h 25m
Wed 4/1106:50 -
2 stops17h 46m
Deal found 2/8£575
Sun 1/1118:30 -
1 stop11h 35m
Tue 3/1106:50 -
2 stops15h 07m
Deal found 2/8£575
Wed 2/1219:33 -
1 stop11h 27m
Fri 4/1209:00 -
2 stops16h 23m
Deal found 31/7£579
Wed 2/1219:33 -
2 stops16h 17m
Fri 4/1207:40 -
2 stops19h 50m
Deal found 3/8£583
Wed 28/1017:35 -
1 stop12h 50m
Fri 6/1107:30 -
2 stops19h 07m
Deal found 4/8£621
Mon 19/1018:14 -
1 stop13h 01m
Wed 28/1006:15 -
2 stops19h 20m
Deal found 1/8£639
Mon 21/917:59 -
1 stop13h 16m
Tue 6/1006:15 -
2 stops20h 20m
Deal found 3/8£642
Mon 14/920:55 -
1 stop17h 25m
Mon 28/920:50 -
3 stops26h 15m
Deal found 3/8£642
Wed 28/1015:45 -
2 stops17h 15m
Wed 4/1111:10 -
2 stops17h 49m
Deal found 3/8£644
Sat 19/912:55 -
2 stops13h 40m
Sat 26/914:10 -
2 stops25h 14m
Deal found 3/8£645
Sun 15/1108:00 -
1 stop16h 30m
Sun 22/1106:00 -
2 stops19h 38m
Deal found 31/7£645

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 5 August 2026.

Round-trip from

£567

One-way from

£137

Popular in

June

Cheapest in

November

Average price

£806
United Airlines
  • United Airlines
  • 2/11-4/11
  • 4 total stops
  • 69h 25m total
  • Kentucky to London
Search Deals
Aer Lingus
  • Aer Lingus
  • 29/9
  • 2 total stops
  • 15h 40m total
  • Kentucky to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£138 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 5 August 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

KnoxvilleLondon

TYS Knoxville McGhee Tyson - LHR London Heathrow

TYSLHR

Knoxville McGhee Tyson

Mon 2/11

15:45-09:10

1 stop12h 25m

London Heathrow

Wed 4/11

06:50-19:36

2 stops17h 46m

£575

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Sun 1/11

18:30-11:05

1 stop11h 35m

London Heathrow

Tue 3/11

06:50-16:57

2 stops15h 07m

£575

LouisvilleLondon

SDF Louisville Intl - LHR London Heathrow

SDFLHR

Louisville Intl

Mon 21/9

08:09-07:15

1 stop18h 06m

London Heathrow

Fri 2/10

08:40-20:33

2 stops16h 53m

£657

KnoxvilleLondon

TYS Knoxville McGhee Tyson - LHR London Heathrow

TYSLHR

Knoxville McGhee Tyson

Tue 13/10

18:23-13:05

2 stops13h 42m

London Heathrow

Fri 23/10

08:40-21:37

2 stops17h 57m

£660

KnoxvilleLondon

TYS Knoxville McGhee Tyson - LHR London Heathrow

TYSLHR

Knoxville McGhee Tyson

Mon 12/10

17:18-12:05

2 stops13h 47m

London Heathrow

Thu 22/10

06:30-17:27

2 stops15h 57m

£660

NashvilleLondon

BNA Nashville Intl - LHR London Heathrow

BNALHR

Nashville Intl

Mon 24/8

09:10-06:30

1 stop15h 20m

London Heathrow

Wed 26/8

08:40-18:49

1 stop16h 09m

£665

BlountvilleLondon

TRI Blountville Tri Cities TN/VA - LHR London Heathrow

TRILHR

Blountville Tri Cities TN/VA

Fri 18/9

13:25-13:35

2 stops19h 10m

London Heathrow

Sun 20/9

06:40-22:20

3 stops20h 40m

£677

NashvilleLondon

BNA Nashville Intl - LHR London Heathrow

BNALHR

Nashville Intl

Tue 25/8

17:58-20:45

1 stop20h 47m

London Heathrow

Sat 5/9

08:40-18:52

1 stop16h 12m

£679

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Mon 21/9

13:57-06:45

1 stop11h 48m

London Heathrow

Fri 2/10

14:10-23:55

1 stop14h 45m

£679

LexingtonLondon

LEX Lexington Blue Grass - LHR London Heathrow

LEXLHR

Lexington Blue Grass

Tue 8/12

07:00-05:55

1 stop17h 55m

London Heathrow

Wed 9/12

18:00-22:30

2 stops33h 30m

£682

Flights are sorted by cheapest return flights first.

Deals found on 31/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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 £468). Flying from Kentucky to London Heathrow Airport in June is currently the most expensive (average of £1,093). 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 £629 and £875 in November.
The cheapest return price found within the last 5 days was £575 on United Airlines (1 Nov–3 Nov).

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, Delta, and JetBlue can get you from Kentucky to London Heathrow Airport in just under 15h 20m. Your travel time can differ by up to 15h 01m. Kentucky and London Heathrow Airport are separated by a distance of 4169 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 Knoxville McGhee Tyson - 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 £468). Flying from Kentucky to London Heathrow Airport in June is currently the most expensive (average of £1,093). 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
Hounslow
Milton Keynes
Gatwick
Luton
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Northampton
Watford
Swindon
Southend-on-Sea
Enfield
Kingston upon Thames
Southall
Poole

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Alternative routes for Kentucky to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Atlanta to Heathrow flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Boston to Gatwick flights
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Newark to London City flights
Newark to Luton flights
Denver to Heathrow flights
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Miami to Heathrow flights
Dulles Intl to London City flights
Boston to London City flights
Los Angeles to Gatwick flights
Baltimore to Gatwick flights
Boston to Stansted flights
Los Angeles to Stansted flights
Reagan-National to Gatwick flights
Philadelphia to Heathrow flights
George Bush Intcntl to Heathrow flights
San Francisco to Gatwick flights
O'Hare Intl to Gatwick flights
Raleigh to Heathrow flights
Sky Harbor Intl to Heathrow flights
Los Angeles to London City flights
Charlotte to Heathrow flights
Minneapolis to Heathrow flights
O'Hare Intl to Stansted flights
O'Hare Intl to London City flights
Orlando to Gatwick flights
San Francisco to Stansted 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.

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