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$269+ Cheap flights from Kentucky to Portugal

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
févr. 28 — mars 71
sam. 2/28
sam. 3/7
1 adult, Economy
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Cheap flight deals from Kentucky to Portugal

Cheapest flights from Kentucky to Portugal
Explore the most affordable flight options available from Kentucky to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 29, 2026.

This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/136:25 pm
CVG
-
OPO
1 stop16h 00m
Delta
mar. 4/216:15 am
OPO
-
CVG
1 stop14h 00m
Delta
Deal found 1/28$486
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 4/126:25 pm
CVG
-
OPO
1 stop22h 35m
Delta
mar. 4/216:15 am
OPO
-
CVG
1 stop14h 00m
Delta
Deal found 1/28$487
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 2/2610:20 am
CVG
-
LIS
1 stop18h 55m
United Airlines
jeu. 3/125:00 am
LIS
-
CVG
2 stops17h 50m
United Airlines
Deal found 1/27$489
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/136:25 pm
CVG
-
OPO
1 stop16h 00m
Delta
mer. 4/225:00 am
OPO
-
CVG
2 stops18h 11m
Delta
Deal found 1/28$489
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/29:40 am
TYS
-
LIS
1 stop19h 35m
United Airlines
mar. 3/175:00 am
LIS
-
TYS
2 stops19h 47m
United Airlines
Deal found 1/28$490
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 4/126:25 pm
CVG
-
OPO
1 stop22h 35m
Delta
mer. 4/225:00 am
OPO
-
CVG
2 stops18h 11m
Delta
Deal found 1/28$490
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/286:00 am
CVG
-
LIS
2 stops22h 20m
United Airlines
lun. 5/411:25 am
LIS
-
CVG
2 stops32h 53m
United Airlines
Deal found 1/27$491
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/146:02 am
CVG
-
LIS
2 stops22h 18m
United Airlines
mar. 4/2111:25 am
LIS
-
CVG
2 stops38h 04m
United Airlines
Deal found 1/28$492
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/2111:32 am
BNA
-
OPO
2 stops16h 13m
United Airlines
mar. 4/286:00 am
OPO
-
BNA
2 stops19h 56m
United Airlines
Deal found 1/27$492
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/252:10 pm
CVG
-
OPO
2 stops14h 20m
United Airlines
mer. 3/412:30 pm
OPO
-
CVG
2 stops16h 19m
United Airlines
Deal found 1/28$492
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/146:25 pm
CVG
-
LIS
1 stop15h 30m
Delta
jeu. 4/235:35 am
LIS
-
CVG
1 stop14h 40m
Delta
Deal found 1/28$494
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/251:30 pm
BNA
-
LIS
1 stop14h 45m
United Airlines
dim. 3/15:00 am
LIS
-
BNA
2 stops20h 01m
United Airlines
Deal found 1/26$495

Find flight deals from Kentucky to Portugal

Keep the following information in mind while searching for Kentucky to Portugal flight deals. Data was last updated janvier 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$486
(Delta)

One-way from

$269
(Kiwi.com)

Popular in

May

Cheapest in

December

Average price

$659
Provider with most accurate pricing for Louisville Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Lisbon Humberto Delgado flights.
Search Deals
From Kentucky to Portugal
Search Deals
One-way flight from Kentucky to Portugal
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kentucky to Portugal 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 2,558,603 searches. Data last updated janvier 29, 2026.
Use the filters below to find and compare flights from Kentucky to Portugal that are best for you.

Fly from

Kentucky

Fly to

Portugal

Route

Depart

Return

Price

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

lun. 3/2

9:40 am-10:15 am

1 stop19h 35m

Lisbon Humberto Delgado

mar. 3/17

5:00 am-8:47 pm

2 stops19h 47m

$490

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

mer. 4/15

6:25 pm-10:00 pm

1 stop22h 35m

Porto

mer. 4/22

5:00 am-6:11 pm

2 stops18h 11m

$490

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

mar. 4/28

6:00 am-9:20 am

2 stops22h 20m

Lisbon Humberto Delgado

lun. 5/4

11:25 am-3:18 pm

2 stops32h 53m

$491

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

mar. 4/14

6:02 am-9:20 am

2 stops22h 18m

Lisbon Humberto Delgado

mar. 4/21

11:25 am-8:29 pm

2 stops38h 04m

$492

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

mar. 4/21

11:32 am-9:45 am

2 stops16h 13m

Porto

mar. 4/28

6:00 am-7:56 pm

2 stops19h 56m

$492

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

mer. 3/4

6:44 am-8:40 am

1 stop20h 56m

Lisbon Humberto Delgado

mar. 3/17

5:30 am-4:15 pm

1 stop14h 45m

$494

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

lun. 4/13

6:25 pm-5:50 pm

1 stop18h 25m

Lisbon Humberto Delgado

ven. 4/24

5:35 am-3:15 pm

1 stop14h 40m

$494

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

mer. 4/29

10:30 am-8:00 am

1 stop16h 30m

Lisbon Humberto Delgado

jeu. 5/7

5:35 am-3:00 pm

1 stop14h 25m

$494

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

lun. 4/13

6:25 pm-3:25 pm

1 stop16h 00m

Porto

mar. 4/21

4:20 pm-11:19 am

2 stops23h 59m

$496

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

mer. 2/25

1:30 pm-10:15 am

1 stop14h 45m

Lisbon Humberto Delgado

dim. 3/1

5:00 am-7:01 pm

2 stops44h 01m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
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Best time to book a flight from Kentucky to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Kentucky 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 Kentucky to Portugal

What is the cheapest month to book a flight from Kentucky to Portugal?

Currently, February is the cheapest month in which you can book a flight from Kentucky to Portugal (average of $460). Flying from Kentucky to Portugal in June is currently the most expensive (average of $1,023). 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.

Related info for your journey

Find useful and relevant information for your journey from Kentucky to Portugal. 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 Portugal?

    There are many flights that can get you from Kentucky to Portugal in 12h 06m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. The distance between Kentucky and Portugal is about 4008 mi. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Kentucky to Portugal?

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

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

    Yes. Cheapflights offers flight deals from Kentucky to Portugal 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 Portugal?

    Currently, February is the cheapest month in which you can book a flight from Kentucky to Portugal (average of $460). Flying from Kentucky to Portugal in June is currently the most expensive (average of $1,023). 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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Alternative routes for Kentucky to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Kentucky to Portugal

Discover the top 2 airlines that operate flights from Kentucky to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated janvier 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$595Average$909FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$606Average$957FlexibilityNo cancel feeOn-time71%

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