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$579+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — OPO
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$717
(American Airlines)

One-way from

$579
(United Airlines)

Popular in

May

Cheapest in

December

Average price

$1,418
From Kentucky to Porto
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One-way flight from Kentucky to Porto
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Highest demand for flights based on searches. 18% potential increase in price ($239 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This American Airlines deal was found by Cheapflights users on 4/30. 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 10/111:37 amCVG - OPO
2 stops14h 58mAmerican Airlines
Wed 10/88:15 amOPO - CVG
2 stops16h 19mAmerican Airlines
Deal found 4/30$717
This Air Canada deal was found by Cheapflights users on 4/30. 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 9/248:15 amBNA - OPO
1 stop19h 05mMultiple Airlines
Thu 10/166:00 amOPO - BNA
2 stops33h 23mMultiple Airlines
Deal found 4/30$740
This United Airlines deal was found by Cheapflights users on 4/30. 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 10/711:23 amCVG - OPO
2 stops17h 22mUnited Airlines
Wed 10/2212:35 pmOPO - CVG
2 stops16h 13mUnited Airlines
Deal found 4/30$756
This Delta deal was found by Cheapflights users on 4/30. 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.
Tue 10/76:30 pmCVG - OPO
1 stop16h 00mDelta
Wed 10/226:15 amOPO - CVG
2 stops21h 05mDelta
Deal found 4/30$800
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/98:15 amBNA - OPO
2 stops28h 15mAir Canada
Wed 10/156:00 amOPO - BNA
2 stops21h 00mAir Canada
Deal found 4/30$813
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Sat 10/114:25 pmBNA - OPO
2 stops36h 45mScandinavian Airlines
Fri 10/175:55 pmOPO - BNA
2 stops33h 43mScandinavian Airlines
Deal found 4/30$864
This Air Canada deal was found by Cheapflights users on 5/1. 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.
Sat 9/201:30 pmCVG - OPO
1 stop15h 05mAir Canada
Sat 10/118:40 amOPO - CVG
2 stops40h 32mAir Canada
Deal found 5/1$868
This United Airlines deal was found by Cheapflights users on 4/30. 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 8/2712:36 pmBNA - OPO
2 stops14h 44mUnited Airlines
Wed 9/312:35 pmOPO - BNA
1 stop14h 33mUnited Airlines
Deal found 4/30$937
This Delta deal was found by Cheapflights users on 4/30. 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.
Thu 10/95:50 pmBNA - OPO
2 stops15h 40mDelta
Fri 10/179:20 amOPO - BNA
2 stops17h 48mDelta
Deal found 4/30$990
This Air France deal was found by Cheapflights users on 5/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:20 pmCVG - OPO
1 stop16h 10mAir France
Sat 8/169:20 amOPO - CVG
2 stops16h 46mAir France
Deal found 5/1$1,021
This United deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:05 pmCVG - OPO
1 stop16h 40mMultiple Airlines
Wed 10/88:40 amOPO - CVG
2 stops16h 32mMultiple Airlines
Deal found 4/30$1,052
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1111:20 amBNA - OPO
1 stop17h 35mTAP AIR PORTUGAL
Wed 10/156:05 pmOPO - BNA
2 stops34h 17mTAP AIR PORTUGAL
Deal found 4/30$1,086

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 May 1, 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

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Wed 10/1

11:37 am-7:35 am

2 stops14h 58m

Porto

Wed 10/8

8:15 am-7:34 pm

2 stops16h 19m

$717

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Wed 9/24

8:15 am-9:20 am

1 stop19h 05m

Porto

Thu 10/16

6:00 am-9:23 am

2 stops33h 23m

$740

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Tue 10/7

11:23 am-9:45 am

2 stops17h 22m

Porto

Wed 10/22

12:35 pm-11:48 pm

2 stops16h 13m

$756

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Tue 10/7

6:30 pm-3:30 pm

1 stop16h 00m

Porto

Wed 10/22

6:15 am-10:20 pm

2 stops21h 05m

$800

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Thu 10/9

8:15 am-6:30 pm

2 stops28h 15m

Porto

Wed 10/15

6:00 am-9:00 pm

2 stops21h 00m

$813

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Sat 10/11

4:25 pm-11:10 am

2 stops36h 45m

Porto

Fri 10/17

5:55 pm-9:38 pm

2 stops33h 43m

$864

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Sat 9/20

1:30 pm-9:35 am

1 stop15h 05m

Porto

Sat 10/11

8:40 am-8:12 pm

2 stops40h 32m

$868

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Wed 8/27

12:36 pm-9:20 am

2 stops14h 44m

Porto

Wed 9/3

12:35 pm-9:08 pm

1 stop14h 33m

$937

NashvillePorto

BNA - OPO

BNAOPO

Nashville Intl

Thu 10/9

5:50 pm-3:30 pm

2 stops15h 40m

Porto

Fri 10/17

9:20 am-9:08 pm

2 stops17h 48m

$990

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Wed 8/6

6:20 pm-3:30 pm

1 stop16h 10m

Porto

Sat 8/16

9:20 am-9:06 pm

2 stops16h 46m

$1,021

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 20 results
1
2

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 May 1, 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.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated May 1, 2025.
See what other customers who have flown with Delta, KLM and SWISS from Kentucky to Porto have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,589 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Kentucky to Porto one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $579. SWISS flights start at $2,005 while deals on KLM start at $5,957 one-way.

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

    Most travelers choose Cincinnati Cinci./N. Kentucky - Porto, Nashville Intl - 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 $1,071). 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 Kentucky?

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

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Alternative routes for Kentucky to Porto

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 Porto

Discover the top 2 airlines that operate flights from Kentucky to Porto. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$677Average$1,156FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,015Average$1,522FlexibilityNo cancel feeOn-time69%

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