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$272+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/258:30 amBNA - LIS
1 stop19h 45mUnited Airlines
Wed 12/316:10 amLIS - BNA
2 stops19h 21mUnited Airlines
Deal found 12/16$807
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/246:05 pmBNA - LIS
1 stop10h 10mUnited Airlines
Sun 1/1111:20 amLIS - BNA
2 stops32h 30mUnited Airlines
Deal found 12/16$859
This Expedia deal was found by Cheapflights users on 12/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:22 pmBNA - LIS
1 stop14h 53mMultiple Airlines
Sat 1/107:55 pmLIS - BNA
2 stops25h 10mMultiple Airlines
Deal found 12/17$891
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/249:00 amCVG - LIS
2 stops18h 10mUnited Airlines
Sun 12/2811:55 amLIS - CVG
2 stops26h 44mUnited Airlines
Deal found 12/17$928
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:22 pmBNA - LIS
1 stop14h 53mLufthansa
Sat 1/1010:15 amLIS - BNA
1 stop18h 20mLufthansa
Deal found 12/17$974
This KAYAK deal was found by Cheapflights users on 12/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:05 pmBNA - LIS
1 stop10h 10mLufthansa
Sun 1/1110:15 amLIS - BNA
1 stop17h 54mLufthansa
Deal found 12/16$975
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:15 amBNA - LIS
2 stops26h 10mAir Canada
Thu 1/812:40 pmLIS - BNA
2 stops37h 10mAir Canada
Deal found 12/16$979
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/246:05 pmBNA - LIS
1 stop10h 10mUnited Airlines
Wed 1/77:50 pmLIS - BNA
2 stops30h 00mUnited Airlines
Deal found 12/16$980
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/298:30 amBNA - LIS
1 stop19h 45mUnited Airlines
Sat 1/1010:15 amLIS - BNA
2 stops29h 16mUnited Airlines
Deal found 12/17$1,015
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Tue 12/162:35 pmBNA - LIS
1 stop11h 35mUnited Airlines
Tue 12/2311:20 amLIS - BNA
2 stops38h 11mUnited Airlines
Deal found 12/15$1,031
This Booking.com deal was found by Cheapflights users on 12/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:05 amSDF - LIS
2 stops18h 50mAir Canada
Tue 1/611:20 amLIS - SDF
2 stops37h 23mAir Canada
Deal found 12/17$1,094
This Booking.com deal was found by Cheapflights users on 12/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:19 pmCVG - LIS
2 stops19h 16mMultiple Airlines
Tue 1/611:20 amLIS - CVG
2 stops31h 59mMultiple Airlines
Deal found 12/17$1,152

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$452
(Kiwi.com)

One-way from

$272
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$641
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.
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From Kentucky to Portugal
Search Deals
One-way flight from Kentucky to Portugal
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($185 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 December 2025
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 December 18, 2025.
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

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Wed 1/28

1:09 pm-8:10 am

1 stop13h 01m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-7:33 pm

2 stops38h 13m

$487

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Thu 1/22

10:55 am-8:10 am

2 stops15h 15m

Lisbon Humberto Delgado

Fri 2/6

6:10 am-10:35 pm

2 stops22h 25m

$488

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Tue 1/27

2:25 pm-11:15 am

2 stops38h 50m

Porto

Sat 2/7

6:00 am-7:33 pm

2 stops19h 33m

$489

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Sat 1/31

2:25 pm-12:05 pm

2 stops15h 40m

Porto

Sat 2/7

6:00 am-7:33 pm

2 stops19h 33m

$489

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Fri 1/30

1:09 pm-8:10 am

1 stop13h 01m

Lisbon Humberto Delgado

Wed 2/4

11:20 am-1:50 pm

2 stops32h 30m

$490

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Fri 1/16

6:45 am-8:10 am

2 stops20h 25m

Lisbon Humberto Delgado

Tue 1/20

11:20 am-4:53 pm

2 stops34h 33m

$491

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Fri 1/30

10:43 am-8:10 am

2 stops15h 27m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-9:42 pm

2 stops40h 22m

$491

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

Fri 1/30

11:15 am-8:10 am

2 stops15h 55m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-3:30 pm

2 stops33h 10m

$491

CincinnatiLisbon

CVG - LIS

CVGLIS

Cincinnati Cinci./N. Kentucky

Sun 2/1

6:42 am-8:00 am

1 stop20h 18m

Lisbon Humberto Delgado

Sat 2/28

5:30 am-3:20 pm

1 stop14h 50m

$492

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Thu 1/29

6:50 am-10:25 am

2 stops21h 35m

Porto

Thu 2/5

5:00 am-5:04 pm

2 stops18h 04m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 58 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, December is the cheapest month in which you can book a flight from Kentucky to Portugal (average of $492). 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.

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

Find hourly flight availability from Kentucky to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from Kentucky to Portugal in the evening. By choosing this option you can save up to 53% on the cost of your flight, compared to a flight in the afternoon.

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 13h 01m. Fly via United Airlines, Delta, or Lufthansa to get the fastest option. The distance between Kentucky and Portugal is about 4120 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, December is the cheapest month in which you can book a flight from Kentucky to Portugal (average of $492). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$596Average$898FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$604Average$916FlexibilityNo cancel feeOn-time71%

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