HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$301+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
CVG — OPO
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Cincinnati to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 July 18, 2026.

This Delta deal was found by Cheapflights users on 7/13. 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 10/278:15 pm
CVG
-
OPO
1 stop21h 45m
Delta
Thu 11/55:55 am
OPO
-
CVG
1 stop15h 15m
Delta
Deal found 7/13$743
This Delta deal was found by Cheapflights users on 7/14. 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.
Mon 11/210:00 am
CVG
-
OPO
2 stops19h 35m
Delta
Thu 11/125:55 am
OPO
-
CVG
1 stop15h 15m
Delta
Deal found 7/14$747
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Mon 11/26:40 pm
CVG
-
OPO
2 stops15h 40m
United Airlines
Thu 11/56:00 am
OPO
-
CVG
2 stops16h 15m
United Airlines
Deal found 7/15$767
This oojo deal was found by Cheapflights users on 7/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:55 pm
CVG
-
OPO
2 stops27h 30m
Lufthansa
Sun 11/16:00 am
OPO
-
CVG
2 stops22h 56m
Lufthansa
Deal found 7/15$775
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:55 pm
CVG
-
OPO
1 stop12h 05m
Multiple Airlines
Sun 11/16:00 am
OPO
-
CVG
2 stops16h 15m
Multiple Airlines
Deal found 7/12$789
This KLM deal was found by Cheapflights users on 7/14. 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.
Sun 11/156:00 pm
CVG
-
OPO
1 stop10h 05m
Multiple Airlines
Sat 11/215:55 am
OPO
-
CVG
1 stop15h 15m
Multiple Airlines
Deal found 7/14$793
This United Airlines deal was found by Cheapflights users on 7/14. 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 11/155:00 pm
CVG
-
OPO
1 stop11h 30m
United Airlines
Sat 11/216:00 am
OPO
-
CVG
2 stops22h 56m
United Airlines
Deal found 7/14$795

Find 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 July 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$743
(Delta)

One-way from

$301
(Kiwi.com)

Popular in

August

Cheapest in

April

Average price

$1,196
Provider with most accurate pricing for Cincinnati Cinci./N. Kentucky-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cincinnati Cinci./N. Kentucky-Porto flights.
Search Deals
From Cincinnati Cinci./N. Kentucky to Porto
Search Deals
One-way flight from Cincinnati Cinci./N. Kentucky to Porto
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($182 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 July 2026
Search Deals

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 July 18, 2026.
Use the filters below to find and compare flights from Cincinnati to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Tue 10/27

8:15 pm-10:00 pm

1 stop21h 45m

Porto

Thu 11/5

11:15 am-12:24 am

2 stops18h 09m

$746

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Mon 11/2

11:05 am-10:35 am

2 stops18h 30m

Porto

Thu 11/12

5:00 am-8:38 pm

2 stops20h 38m

$750

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Mon 11/2

6:40 pm-3:20 pm

2 stops15h 40m

Porto

Thu 11/5

6:00 am-5:15 pm

2 stops16h 15m

$767

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Wed 10/21

5:30 am-7:00 am

2 stops20h 30m

Porto

Sun 11/1

6:00 am-5:15 pm

2 stops16h 15m

$798

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Sun 11/15

10:20 am-9:30 am

2 stops18h 10m

Porto

Sat 11/21

6:00 am-7:16 pm

2 stops18h 16m

$799

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Wed 8/12

11:48 am-6:55 am

1 stop14h 07m

Porto

Tue 8/18

6:00 am-7:12 pm

2 stops42h 12m

$920

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Mon 11/2

1:15 pm-9:30 am

1 stop15h 15m

Porto

Thu 11/12

12:35 pm-11:48 pm

1 stop16h 13m

$922

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Tue 9/15

7:52 pm-6:55 am

2 stops30h 03m

Porto

Tue 10/20

11:15 am-4:04 pm

2 stops33h 49m

$930
Quickest round-trip

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Wed 8/12

5:10 pm-3:25 pm

1 stop17h 15m

Porto

Tue 8/18

6:15 am-3:05 pm

1 stop13h 50m

$935
Cheapest one-way

CincinnatiPorto

CVG - OPO

CVGOPO

Cincinnati Cinci./N. Kentucky

Sat 8/22

11:29 am-2:10 pm

3 stops45h 41m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Cincinnati to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Cincinnati to Porto in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Cincinnati-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cincinnati-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cincinnati-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cincinnati-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cincinnati-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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 July 18, 2026.
See what other customers who have flown with United 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.
United Airlines
7.4
Good
9,997 reviews

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
9,997 reviews
United Airlines
7.4
Good
9,997 reviews

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

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 15h 40m. Delta provides one of the quickest options available for as low as $767. The distance between Cincinnati and Porto is about 3878 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Cincinnati to Porto round-trip?

    United Airlines, at $531, was found to be the cheapest airline from Cincinnati to Porto.. United Airlines is currently priced 41% 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.

See more FAQs

Traveling to a place near Porto?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Cincinnati to Porto

Discover the top airline 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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$531Average$867FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights