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$328+ Cheap flights from Kentucky to Porto (OPO)

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — OPO
oct. 23 — oct. 301
jue. 10/23
jue. 10/30
1 adult, Economy
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Cheap flight deals from Kentucky to Porto

Keep the following information in mind while searching for Kentucky to Porto flight deals. Data was last updated septiembre 23, 2025.

Round-trip from

$645
(United Airlines)

One-way from

$328
(Kiwi.com)
From Kentucky to Porto
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One-way flight from Kentucky to Porto
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Find flight deals from Kentucky to Porto

Cheapest flights from Kentucky to Porto
Explore the most affordable flight options available from Kentucky to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 23, 2025.

This United Airlines deal was found by Cheapflights users on 9/21. 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.
vie. 11/147:05 amLEX - OPO
2 stops21h 25mUnited Airlines
mar. 11/186:00 amOPO - LEX
2 stops19h 54mUnited Airlines
Deal found 9/21$645
This Delta deal was found by Cheapflights users on 9/21. 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.
jue. 12/1111:29 amBNA - OPO
2 stops16h 56mDelta
mar. 12/2311:25 amOPO - BNA
2 stops16h 10mDelta
Deal found 9/21$648
This KLM deal was found by Cheapflights users on 9/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/206:04 pmCVG - OPO
2 stops16h 26mMultiple Airlines
mar. 10/289:55 amOPO - CVG
2 stops16h 38mMultiple Airlines
Deal found 9/21$678
This American Airlines deal was found by Cheapflights users on 9/23. 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.
vie. 11/711:25 amBNA - OPO
2 stops14h 15mAmerican Airlines
vie. 11/1412:25 pmOPO - BNA
2 stops16h 46mAmerican Airlines
Deal found 9/23$708
This KLM deal was found by Cheapflights users on 9/22. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/147:27 pmTRI - OPO
2 stops14h 58mKLM
mar. 11/1811:10 amOPO - TRI
2 stops16h 21mKLM
Deal found 9/22$711
This Delta deal was found by Cheapflights users on 9/21. 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. 10/76:30 pmCVG - OPO
1 stop16h 00mDelta
mar. 10/146:15 amOPO - CVG
2 stops18h 13mDelta
Deal found 9/21$753
This Delta deal was found by Cheapflights users on 9/21. 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. 10/76:30 pmCVG - OPO
1 stop16h 00mDelta
lun. 10/134:20 pmOPO - CVG
1 stop27h 55mDelta
Deal found 9/21$756
This Delta deal was found by Cheapflights users on 9/21. 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. 10/64:53 pmCVG - OPO
2 stops17h 37mDelta
mar. 10/146:15 amOPO - CVG
2 stops18h 13mDelta
Deal found 9/21$758
This Delta deal was found by Cheapflights users on 9/21. 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. 10/66:10 pmCVG - OPO
2 stops16h 20mDelta
lun. 10/134:20 pmOPO - CVG
1 stop27h 55mDelta
Deal found 9/21$760
This Delta deal was found by Cheapflights users on 9/21. 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.
mié. 10/84:00 pmCVG - OPO
2 stops18h 35mDelta
lun. 10/134:20 pmOPO - CVG
1 stop27h 55mDelta
Deal found 9/21$772
This KAYAK deal was found by Cheapflights users on 9/21. 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.
dom. 10/57:41 pmCVG - OPO
2 stops22h 39mLufthansa
mar. 10/146:00 amOPO - CVG
2 stops22h 59mLufthansa
Deal found 9/21$778
This Mytrip deal was found by Cheapflights users on 9/23. 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.
vie. 11/72:06 pmBNA - OPO
3 stops25h 44mMultiple Airlines
vie. 11/146:35 pmOPO - BNA
2 stops24h 26mMultiple Airlines
Deal found 9/23$779

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kentucky to Porto 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 septiembre 23, 2025.
Use the filters below to find and compare flights from Kentucky to Porto that are best for you.

Fly from

Kentucky

Fly to

Porto

Route

Depart

Return

Price

LexingtonPorto

LEX - OPO

LEXOPO

Lexington Blue Grass

vie. 11/14

7:05 am-9:30 am

2 stops21h 25m

Porto

mar. 11/18

6:00 am-8:54 pm

2 stops19h 54m

$645

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

jue. 12/11

11:29 am-10:25 am

2 stops16h 56m

Porto

mar. 12/23

11:25 am-9:35 pm

2 stops16h 10m

$648

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

dom. 3/8

4:15 pm-9:30 am

2 stops13h 15m

Porto

dom. 3/15

6:00 am-8:17 pm

2 stops42h 17m

$651

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

lun. 10/20

6:04 pm-3:30 pm

2 stops16h 26m

Porto

mar. 10/28

9:55 am-10:33 pm

2 stops16h 38m

$678

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

vie. 11/7

11:25 am-7:40 am

2 stops14h 15m

Porto

vie. 11/14

12:25 pm-11:11 pm

2 stops16h 46m

$708

BlountvillePorto

TRI - OPO

TRIOPO

Blountville Tri Cities TN/VA

vie. 11/14

7:27 pm-3:25 pm

2 stops14h 58m

Porto

mar. 11/18

11:10 am-10:31 pm

2 stops16h 21m

$711

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

mar. 10/7

6:30 pm-3:30 pm

1 stop16h 00m

Porto

mar. 10/14

6:15 am-7:28 pm

2 stops18h 13m

$753

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

mar. 10/7

6:30 pm-3:30 pm

1 stop16h 00m

Porto

lun. 10/13

4:20 pm-3:15 pm

1 stop27h 55m

$756

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

lun. 10/6

4:53 pm-3:30 pm

2 stops17h 37m

Porto

mar. 10/14

6:15 am-7:28 pm

2 stops18h 13m

$758

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

lun. 10/6

6:10 pm-3:30 pm

2 stops16h 20m

Porto

lun. 10/13

4:20 pm-3:15 pm

1 stop27h 55m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/22

Showing 1-10 of 20 results
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Best time to book a flight from Kentucky to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

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

Find hourly flight availability from Kentucky to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 23, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kentucky to Porto as you normally would.

Related info for your journey

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

  • What airport do you fly into for flights to Porto from Kentucky?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Kentucky to Porto.

  • How long is the flight from Kentucky to Porto?

    There are many flights that can get you from Kentucky to Porto in 14h 15m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. The distance between Kentucky and Porto is about 4074 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Kentucky to Porto?

    Most travelers choose Nashville Intl - Porto, Cincinnati Cinci./N. Kentucky - Porto or Lexington Blue Grass - Porto when deciding on the best route from Kentucky to Porto.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Kentucky to Porto (average of $523). Flying from Kentucky to Porto in June is currently the most expensive (average of $1,028). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

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