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$275+ Cheap flights from Cincinnati (CVG) 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — OPO
oct. 19 — oct. 261
dom. 10/19
dom. 10/26
1 adult, Economy
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Cheap flight deals from Cincinnati to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Cincinnati (CVG) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 19, 2025.

Round-trip from

$595
(United Airlines)

One-way from

$275
(Kiwi.com)

Popular in

February

Cheapest in

November

Average price

$959
From Cincinnati Cinci./N. Kentucky to Porto
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One-way flight from Cincinnati Cinci./N. Kentucky to Porto
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Highest demand for flights based on searches. 1% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Cincinnati to Porto

Cheapest flights from Cincinnati to Porto
Explore the most affordable flight options available from Cincinnati to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 19, 2025.

This United Airlines deal was found by Cheapflights users on 9/17. 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.
dom. 11/25:00 amCVG - OPO
2 stops22h 30mUnited Airlines
dom. 11/96:00 amOPO - CVG
2 stops19h 30mUnited Airlines
Deal found 9/17$595
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/243:09 pmCVG - OPO
2 stops19h 21mDelta
mié. 10/16:15 amOPO - CVG
2 stops21h 54mDelta
Deal found 9/17$706
This Delta deal was found by Cheapflights users on 9/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/17:36 pmCVG - OPO
2 stops18h 59mDelta
vie. 10/106:40 amOPO - CVG
2 stops21h 20mDelta
Deal found 9/17$719
This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/247:36 pmCVG - OPO
2 stops14h 59mKLM
mié. 10/14:20 pmOPO - CVG
1 stop27h 55mKLM
Deal found 9/17$721
This Delta deal was found by Cheapflights users on 9/18. 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.
vie. 11/2111:00 amCVG - OPO
2 stops18h 30mDelta
vie. 11/286:30 amOPO - CVG
2 stops32h 48mDelta
Deal found 9/18$784
This Delta deal was found by Cheapflights users on 9/18. 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.
dom. 11/2312:14 pmCVG - OPO
2 stops17h 16mDelta
dom. 11/3011:25 amOPO - CVG
2 stops36h 29mDelta
Deal found 9/18$816
This KLM deal was found by Cheapflights users on 9/18. 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.
mié. 10/12:45 pmCVG - OPO
2 stops14h 55mKLM
vie. 10/104:20 pmOPO - CVG
1 stop27h 55mKLM
Deal found 9/18$836
This United Airlines deal was found by Cheapflights users on 9/18. 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.
dom. 11/232:09 pmCVG - OPO
2 stops14h 21mUnited Airlines
dom. 11/3012:30 pmOPO - CVG
3 stops52h 07mUnited Airlines
Deal found 9/18$944
This Delta deal was found by Cheapflights users on 9/18. 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.
vie. 9/266:00 pmCVG - OPO
2 stops19h 15mDelta
sáb. 10/44:20 pmOPO - CVG
2 stops23h 40mDelta
Deal found 9/18$946

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cincinnati 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 19, 2025.
Use the filters below to find and compare flights from Cincinnati to Porto that are best for you.

Fly from

Cincinnati

Fly to

Porto

Route

Depart

Return

Price

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

dom. 11/2

5:00 am-8:30 am

2 stops22h 30m

Porto

dom. 11/9

6:00 am-8:30 pm

2 stops19h 30m

$595

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

dom. 3/8

6:25 pm-9:30 am

1 stop11h 05m

Porto

dom. 3/15

12:30 pm-4:58 pm

2 stops32h 28m

$597

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

mié. 10/1

7:36 pm-7:35 pm

2 stops18h 59m

Porto

vie. 10/10

6:40 am-11:00 pm

2 stops21h 20m

$719

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

vie. 11/21

11:00 am-10:30 am

2 stops18h 30m

Porto

vie. 11/28

6:30 am-10:18 am

2 stops32h 48m

$784

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

dom. 11/23

12:14 pm-10:30 am

2 stops17h 16m

Porto

dom. 11/30

11:25 am-6:54 pm

2 stops36h 29m

$816

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

mié. 10/1

2:45 pm-10:40 am

2 stops14h 55m

Porto

vie. 10/10

4:20 pm-3:15 pm

1 stop27h 55m

$836

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

dom. 11/23

2:09 pm-9:30 am

2 stops14h 21m

Porto

dom. 11/30

12:30 pm-11:37 am

3 stops52h 07m

$944

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

vie. 10/3

3:58 pm-8:50 am

3 stops59h 52m

$275

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

mié. 10/1

3:32 pm-8:55 am

2 stops36h 23m

$357

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

jue. 10/2

7:26 pm-9:05 am

2 stops56h 39m

$373

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 14 results
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Best time to book a flight from Cincinnati to Porto

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

What is the cheapest month to book a flight from Cincinnati to Porto?

Currently, January is the cheapest month in which you can book a flight from Cincinnati to Porto (average of $523). Flying from Cincinnati 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.

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

Find hourly flight availability from Cincinnati 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 19, 2025.

It’s optimal to fly from Cincinnati to Porto in the morning. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the afternoon.

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 septiembre 19, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Cincinnati to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Cincinnati to Porto. 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 Cincinnati to Porto?

    A quick flight from Cincinnati to Porto can take about 22h 30m. United Airlines provides one of the quickest options available for as low as $595. The distance between Cincinnati and Porto is about 3878 mi.

  • What are the cheapest airlines flying from Cincinnati to Porto round-trip?

    United Airlines, at $652, was found to be the cheapest airline from Cincinnati to Porto.Alternate airlines to your destination round-trip include American Airlines and Delta. United Airlines is currently priced 34% below the average price you’ll pay for this route.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Cincinnati to Porto (average of $523). Flying from Cincinnati 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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Top 3 airlines flying from Cincinnati to Porto

Discover the top 3 airlines that operate flights from Cincinnati 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 septiembre 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$652Average$960FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$783Average$916FlexibilityNo cancel feeOn-time71%
DeltaCheapest$824Average$1,036FlexibilityNo cancel feeOn-timeN/A

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