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Portugal

$284+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — LIS
Aug 12 — Aug 191
Wed 8/12
Wed 8/19
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 July 13, 2026.

This Gotogate deal was found by Cheapflights users on 7/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:00 am
BNA
-
LIS
1 stop19h 20m
Multiple Airlines
Wed 11/185:00 am
LIS
-
BNA
2 stops20h 38m
Multiple Airlines
Deal found 7/12$691
This Mytrip deal was found by Cheapflights users on 7/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:55 pm
BNA
-
LIS
2 stops17h 55m
Multiple Airlines
Wed 9/29:10 pm
LIS
-
BNA
3 stops26h 33m
Multiple Airlines
Deal found 7/8$696
This United Airlines deal was found by Cheapflights users on 7/11. 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 10/268:30 am
BNA
-
LIS
1 stop20h 50m
United Airlines
Tue 11/312:50 pm
LIS
-
BNA
1 stop32h 07m
United Airlines
Deal found 7/11$701
This FlightHub deal was found by Cheapflights users on 7/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:10 pm
BNA
-
LIS
1 stop10h 45m
Air Canada
Thu 11/268:55 am
LIS
-
BNA
2 stops34h 59m
Air Canada
Deal found 7/11$705
This United Airlines deal was found by Cheapflights users on 7/11. 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 10/268:30 am
BNA
-
LIS
1 stop20h 50m
United Airlines
Thu 11/510:55 am
LIS
-
BNA
1 stop32h 19m
United Airlines
Deal found 7/11$706
This United Airlines deal was found by Cheapflights users on 7/11. 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.
Sun 10/256:00 am
BNA
-
LIS
1 stop21h 10m
United Airlines
Tue 11/312:50 pm
LIS
-
BNA
1 stop32h 07m
United Airlines
Deal found 7/11$707
This Air Canada deal was found by Cheapflights users on 7/11. 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.
Mon 10/269:42 am
BNA
-
LIS
2 stops19h 58m
Air Canada
Fri 11/611:20 am
LIS
-
BNA
2 stops34h 01m
Air Canada
Deal found 7/11$709
This United Airlines deal was found by Cheapflights users on 7/11. 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.
Sun 10/256:00 am
BNA
-
LIS
1 stop21h 10m
United Airlines
Thu 11/510:55 am
LIS
-
BNA
1 stop32h 19m
United Airlines
Deal found 7/11$711
This United Airlines deal was found by Cheapflights users on 7/10. 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 11/2310:20 am
CVG
-
LIS
1 stop19h 00m
United Airlines
Thu 12/35:00 am
LIS
-
CVG
2 stops20h 39m
United Airlines
Deal found 7/10$713
This Gotogate deal was found by Cheapflights users on 7/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/131:55 pm
CVG
-
LIS
1 stop14h 25m
Multiple Airlines
Tue 10/206:45 am
LIS
-
CVG
2 stops18h 45m
Multiple Airlines
Deal found 7/12$719
This United Airlines deal was found by Cheapflights users on 7/11. 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.
Sun 11/16:20 am
SDF
-
LIS
1 stop20h 50m
United Airlines
Tue 11/1712:50 pm
LIS
-
SDF
2 stops36h 43m
United Airlines
Deal found 7/11$726
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:46 pm
TRI
-
LIS
2 stops16h 24m
American Airlines
Thu 12/109:40 am
LIS
-
TRI
2 stops19h 17m
American Airlines
Deal found 7/10$727

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 July 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$696
(Mytrip)

One-way from

$284
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$1,217
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. 23% potential increase in price ($285 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 13, 2026.
Use the filters below to find and compare flights from Kentucky to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Wed 11/18

7:00 am-6:55 am

3 stops17h 55m

Lisbon Humberto Delgado

Fri 11/27

12:25 pm-8:29 am

2 stops26h 04m

$717

BlountvilleLisbon

TRI - LIS

TRILIS

Blountville Tri Cities TN/VA

Wed 12/2

2:46 pm-12:10 pm

2 stops16h 24m

Lisbon Humberto Delgado

Thu 12/10

9:40 am-11:57 pm

2 stops19h 17m

$727

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Tue 11/10

7:20 pm-10:05 am

1 stop9h 45m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-11:56 pm

2 stops23h 56m

$734

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 11/15

2:00 pm-10:05 am

1 stop15h 05m

Lisbon Humberto Delgado

Tue 11/17

12:50 pm-2:43 pm

2 stops30h 53m

$745

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 11/15

2:00 pm-10:05 am

1 stop15h 05m

Lisbon Humberto Delgado

Tue 11/17

12:50 pm-5:02 pm

2 stops33h 12m

$745

BlountvilleLisbon

TRI - LIS

TRILIS

Blountville Tri Cities TN/VA

Tue 12/8

11:00 am-8:10 am

2 stops16h 10m

Lisbon Humberto Delgado

Wed 12/16

11:20 am-12:14 am

2 stops41h 54m

$745

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Wed 11/18

8:41 am-9:30 am

1 stop18h 49m

Porto

Wed 11/25

6:00 am-9:32 pm

2 stops21h 32m

$745

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Wed 11/11

1:14 pm-9:30 am

1 stop14h 16m

Porto

Fri 11/13

12:35 pm-8:29 am

2 stops25h 54m

$745

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Mon 11/2

1:24 pm-12:05 pm

2 stops16h 41m

Lisbon Humberto Delgado

Mon 11/30

8:45 pm-10:22 am

2 stops19h 37m

$753

NashvilleLisbon

BNA - LIS

BNALIS

Nashville Intl

Sat 10/24

7:45 pm-9:10 am

1 stop31h 25m

Lisbon Humberto Delgado

Sun 11/8

10:40 am-1:14 pm

2 stops32h 34m

$765

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 60 resultsSorted by cheapest first
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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 $449). Flying from Kentucky to Portugal in June is currently the most expensive (average of $1,052). 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 16h 24m. Fly via United Airlines, American Airlines, or Delta to get the fastest option. The distance between Kentucky and Portugal is about 3897 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 $449). Flying from Kentucky to Portugal in June is currently the most expensive (average of $1,052). 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

Browse thousands of different options on Cheapflights for your next trip

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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 3 airlines flying from Kentucky to Portugal

Discover the top 3 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 July 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$543Average$958FlexibilityNo cancel feeOn-time69%
DeltaCheapest$587Average$1,187FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$604Average$949FlexibilityNo cancel feeOn-time71%

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