$410 Cheap Flights from Raleigh (RDU) to Porto (OPO)

View $410 flight on Mon, Dec 8, 2025Opens in a new window

Popular airlines from Raleigh-Durham International Airport (RDU) to Porto Airport (OPO)

Cheap Flights from Raleigh to Porto (RDU-OPO)

Prices were available within the past 7 days and start at $410 for one-way flights and $529 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 24 - Mon, Dec 8
RDU
Raleigh
OPO
Porto
$529 Roundtrip, found 1 day ago
$529
Roundtrip
found 1 day ago
Select United flight, departing Mon, Nov 24 from Raleigh to Porto, returning Mon, Dec 8, priced at $529 found 1 day ago
United
Mon, Nov 24 - Wed, Dec 3
RDU
Raleigh
OPO
Porto
$533 Roundtrip, found 3 hours ago
$533
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Nov 24 from Raleigh to Porto, returning Wed, Dec 3, priced at $533 found 3 hours ago
Air Canada
Mon, Nov 24 - Mon, Dec 8
RDU
Raleigh
OPO
Porto
$533 Roundtrip, found 1 day ago
$533
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Nov 24 from Raleigh to Porto, returning Mon, Dec 8, priced at $533 found 1 day ago
Air Canada
Sun, Nov 23 - Tue, Dec 9
RDU
Raleigh
OPO
Porto
$534 Roundtrip, found 4 hours ago
$534
Roundtrip
found 4 hours ago
Select Air Canada flight, departing Sun, Nov 23 from Raleigh to Porto, returning Tue, Dec 9, priced at $534 found 4 hours ago
Delta
Fri, Jan 2 - Tue, Jan 13
RDU
Raleigh
OPO
Porto
$536 Roundtrip, found 2 days ago
$536
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Jan 2 from Raleigh to Porto, returning Tue, Jan 13, priced at $536 found 2 days ago
Air Canada
Sun, Nov 23 - Tue, Dec 9
RDU
Raleigh
OPO
Porto
$537 Roundtrip, found 4 hours ago
$537
Roundtrip
found 4 hours ago
Select Air Canada flight, departing Sun, Nov 23 from Raleigh to Porto, returning Tue, Dec 9, priced at $537 found 4 hours ago
Swiss International Air Lines
Tue, Jan 20 - Tue, Jan 27
RDU
Raleigh
OPO
Porto
$538 Roundtrip, found 1 day ago
$538
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, Jan 20 from Raleigh to Porto, returning Tue, Jan 27, priced at $538 found 1 day ago
Lufthansa
Wed, Nov 12 - Thu, Nov 27
RDU
Raleigh
OPO
Porto
$539 Roundtrip, found 12 hours ago
$539
Roundtrip
found 12 hours ago
Select Lufthansa flight, departing Wed, Nov 12 from Raleigh to Porto, returning Thu, Nov 27, priced at $539 found 12 hours ago
Lufthansa
Wed, Nov 12 - Sat, Dec 6
RDU
Raleigh
OPO
Porto
$539 Roundtrip, found 6 days ago
$539
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Nov 12 from Raleigh to Porto, returning Sat, Dec 6, priced at $539 found 6 days ago
Swiss International Air Lines
Wed, Jan 7 - Wed, Jan 14
RDU
Raleigh
OPO
Porto
$545 Roundtrip, found 15 hours ago
$545
Roundtrip
found 15 hours ago
Select Swiss International Air Lines flight, departing Wed, Jan 7 from Raleigh to Porto, returning Wed, Jan 14, priced at $545 found 15 hours ago

Find the cheapest month to fly from Raleigh (RDU) to Porto (OPO)

November is typically the cheapest month to fly

From $511 - $1,195 per traveler.

Alternative airports near Porto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dr. Francisco de Sa Carneiro OPO. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $859
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $859

Frequently asked questions

How much does a flight from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Snag a cheap one-way flight from $410 or cheap return flight from $529 from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
November is the least expensive month to fly from RDU to OPO. Traveling during quieter months is often the key to finding better deals on flights.
What is the cheapest airline that flies from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest RDU to OPO flight.
How many flights per day from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Direct flights from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from RDU to OPO?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
To arrive at Dr. Francisco de Sa Carneiro Airport (OPO) on time, book a flight that leaves Raleigh - Durham Intl. Airport (RDU) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Booking your flight from RDU to OPO right before your getaway is typically more expensive. But if you're flexible with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a RDU to OPO flight and hotel package?
You'll generally save money by securing a RDU to OPO flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Raleigh - Durham Intl. Airport (RDU) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Generally, it's possible to cancel or reschedule your RDU to OPO flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Raleigh - Durham Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$529
Distance
3702 mi

Book with confidence

Raleigh to Porto Flights

The cheapest times to fly from Raleigh 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 Raleigh to Porto are during the month of November. You can find some of the cheapest flights from Raleigh to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Raleigh to Porto

Sunday is one of the best days to book for cheap flights from Raleigh 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 Raleigh 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 Raleigh to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $410 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 Raleigh 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 Raleigh 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.

 

Raleigh to Porto Flights

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*Available to One Key members.