$399 Cheap Flights from Columbus (CMH) to Porto (OPO)

View $399 flight on Mon, Mar 2, 2026Opens in a new window

Popular airlines from John Glenn Columbus Intl. Airport (CMH) to Porto Airport (OPO)

Cheap Flights from Columbus to Porto (CMH-OPO)

Prices were available within the past 7 days and start at $399 for one-way flights and $486 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Mon, Mar 2 - Tue, Mar 10
CMH
Columbus
OPO
Porto
$486 Roundtrip, just found
$486
Roundtrip
just found
Select Lufthansa flight, departing Mon, Mar 2 from Columbus to Porto, returning Tue, Mar 10, priced at $486 just found
Lufthansa
Tue, Jan 13 - Tue, Jan 27
CMH
Columbus
OPO
Porto
$490 Roundtrip, found 4 days ago
$490
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Tue, Jan 13 from Columbus to Porto, returning Tue, Jan 27, priced at $490 found 4 days ago
United
Mon, Mar 9 - Wed, Mar 25
CMH
Columbus
OPO
Porto
$490 Roundtrip, found 1 day ago
$490
Roundtrip
found 1 day ago
Select United flight, departing Mon, Mar 9 from Columbus to Porto, returning Wed, Mar 25, priced at $490 found 1 day ago
Delta
Tue, Mar 3 - Mon, Mar 16
CMH
Columbus
OPO
Porto
$492 Roundtrip, found 1 day ago
$492
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 3 from Columbus to Porto, returning Mon, Mar 16, priced at $492 found 1 day ago
Delta
Tue, Mar 10 - Mon, Mar 16
CMH
Columbus
OPO
Porto
$492 Roundtrip, found 1 day ago
$492
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Mar 10 from Columbus to Porto, returning Mon, Mar 16, priced at $492 found 1 day ago
Lufthansa
Mon, Mar 2 - Tue, Mar 10
CMH
Columbus
OPO
Porto
$493 Roundtrip, just found
$493
Roundtrip
just found
Select Lufthansa flight, departing Mon, Mar 2 from Columbus to Porto, returning Tue, Mar 10, priced at $493 just found
United
Sat, Jan 10 - Sun, Jan 18
CMH
Columbus
OPO
Porto
$494 Roundtrip, found 1 day ago
$494
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jan 10 from Columbus to Porto, returning Sun, Jan 18, priced at $494 found 1 day ago
Lufthansa
Tue, Jan 20 - Fri, Feb 13
CMH
Columbus
OPO
Porto
$495 Roundtrip, found 4 days ago
$495
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Tue, Jan 20 from Columbus to Porto, returning Fri, Feb 13, priced at $495 found 4 days ago
Brussels Airlines
Tue, Jan 20 - Fri, Feb 13
CMH
Columbus
OPO
Porto
$496 Roundtrip, found 4 days ago
$496
Roundtrip
found 4 days ago
Select Brussels Airlines flight, departing Tue, Jan 20 from Columbus to Porto, returning Fri, Feb 13, priced at $496 found 4 days ago
British Airways
Mon, Mar 2 - Tue, Mar 10
CMH
Columbus
OPO
Porto
$501 Roundtrip, just found
$501
Roundtrip
just found
Select British Airways flight, departing Mon, Mar 2 from Columbus to Porto, returning Tue, Mar 10, priced at $501 just found
Flights from Columbus (CMH) to Porto (OPO)
Origin airport
John Glenn Columbus Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Turkish Airlines, United
Roundtrip price
$485
Distance
3766 mi

Columbus to Porto Flights

The cheapest times to fly from Columbus to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Columbus to Porto are during the month of March. You can find some of the cheapest flights from Columbus to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Columbus to Porto

Sunday is one of the best days to book for cheap flights from Columbus to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Columbus to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Columbus to Porto in 2026. You can also book with separate airlines for your outbound and return journeys, from $399 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Columbus to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Columbus to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Get a cheap one-way flight from $399 or cheap return flight from $486 from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Planning your getaway for March may help you find better deals, as it's the cheapest month for flights between CMH and OPO. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from CMH to OPO. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
You'll need to take a flight with a layover if you're traveling from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from CMH to OPO?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Choose a flight from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Booking your flight from CMH to OPO shortly before your trip is typically more expensive. However, if you're flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a CMH to OPO flight and hotel package?
You'll typically save money by booking a CMH to OPO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your preferred flights and accommodations, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from John Glenn Columbus Intl. Airport (CMH) to Dr. Francisco de Sa Carneiro Airport (OPO)?
If you reserved your CMH to OPO flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.