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$225+ Cheap flights from Raleigh (RDU) 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — OPO
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
1 adult, Economy
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Cheap flight deals from Raleigh to Porto

Best flights from Raleigh to Porto
Discover carefully curated flight deals from Raleigh to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 30, 2025.

This United Airlines deal was found by Cheapflights users on 12/29. 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 4/151:15 pmRDU - OPO
2 stops15h 30mUnited Airlines
Wed 4/226:00 amOPO - RDU
2 stops37h 06mUnited Airlines
Deal found 12/29$491
This FlightHub deal was found by Cheapflights users on 12/28. 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.
Tue 2/172:50 pmRDU - OPO
2 stops18h 55mLufthansa
Tue 3/312:30 pmOPO - RDU
2 stops34h 35mLufthansa
Deal found 12/28$492
This Delta deal was found by Cheapflights users on 12/28. 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.
Wed 2/112:10 pmRDU - OPO
2 stops15h 20mDelta
Wed 2/185:00 amOPO - RDU
2 stops24h 09mDelta
Deal found 12/28$499
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Thu 3/54:15 pmRDU - OPO
1 stop14h 25mUnited Airlines
Fri 3/136:00 amOPO - RDU
2 stops36h 08mUnited Airlines
Deal found 12/30$499
This Delta deal was found by Cheapflights users on 12/30. 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 3/510:00 amRDU - OPO
2 stops19h 30mDelta
Fri 3/135:00 amOPO - RDU
2 stops22h 59mDelta
Deal found 12/30$499
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Thu 3/54:15 pmRDU - OPO
1 stop14h 25mUnited Airlines
Thu 3/126:00 amOPO - RDU
2 stops43h 33mUnited Airlines
Deal found 12/30$499
This United Airlines deal was found by Cheapflights users on 12/28. 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.
Sat 2/281:26 pmRDU - OPO
2 stops15h 04mUnited Airlines
Thu 3/1212:35 pmOPO - RDU
2 stops15h 09mUnited Airlines
Deal found 12/28$500
This United Airlines deal was found by Cheapflights users on 12/29. 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.
Fri 2/278:00 pmRDU - OPO
2 stops32h 30mUnited Airlines
Thu 3/1212:35 pmOPO - RDU
1 stop13h 20mUnited Airlines
Deal found 12/29$500

Find flight deals from Raleigh to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Raleigh (RDU) 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 December 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$491
(FlightHub)

One-way from

$225
(KLM)

Popular in

May

Cheapest in

February

Average price

$709
Provider with most accurate pricing for Raleigh-Durham-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Porto flights.
Search Deals
From Raleigh-Durham to Porto
Search Deals
One-way flight from Raleigh-Durham to Porto
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($280 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Raleigh 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 December 30, 2025.
Use the filters below to find and compare flights from Raleigh to Porto that are best for you.

Fly from

Raleigh

Fly to

Porto

Route

Depart

Return

Price

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 4/15

1:15 pm-9:45 am

2 stops15h 30m

Porto

Wed 4/22

6:00 am-2:06 pm

2 stops37h 06m

$491

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Tue 2/17

2:50 pm-2:45 pm

2 stops18h 55m

Porto

Tue 3/3

12:30 pm-6:05 pm

2 stops34h 35m

$492

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 2/11

2:10 pm-10:30 am

2 stops15h 20m

Porto

Wed 2/18

5:00 am-12:09 am

2 stops24h 09m

$499

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Thu 3/5

4:15 pm-11:40 am

1 stop14h 25m

Porto

Fri 3/13

6:00 am-2:08 pm

2 stops36h 08m

$499

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Thu 3/5

10:00 am-10:30 am

2 stops19h 30m

Porto

Fri 3/13

5:00 am-11:59 pm

2 stops22h 59m

$499

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Thu 3/5

4:15 pm-11:40 am

1 stop14h 25m

Porto

Thu 3/12

6:00 am-9:33 pm

2 stops43h 33m

$499

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sat 2/28

1:26 pm-9:30 am

2 stops15h 04m

Porto

Thu 3/12

12:35 pm-11:44 pm

2 stops15h 09m

$500

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Fri 2/27

8:00 pm-9:30 am

2 stops32h 30m

Porto

Thu 3/12

12:35 pm-9:55 pm

1 stop13h 20m

$500

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 4/19

6:10 pm-10:00 pm

1 stop22h 50m

$225

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 4/19

4:20 pm-8:20 pm

2 stops23h 00m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

Showing 1-10 of 18 results
1
2

Compare providers for flights from Raleigh 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 Raleigh to Porto in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 Raleigh-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Raleigh-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Raleigh-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Raleigh-Porto flights, Cheapflights users trust Expedia the most. Expedia 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 Raleigh-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 Raleigh to Porto

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

How far ahead should I book a flight from Raleigh to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Porto. Price data was last updated on December 26, 2025.

To ensure you get the cheapest price possible for a flight from Raleigh to Porto, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Raleigh to Porto (average of $515). Flying from Raleigh to Porto in September is currently the most expensive (average of $838). 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.

How much does it cost to fly round-trip from Raleigh to Porto?

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 December 30, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Raleigh to Porto to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,015 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,015 reviews
Delta
7.9
Good
8,015 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,123 reviews
Delta
7.9
Good
8,015 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,074 reviews
Delta
7.9
Good
8,015 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,571 reviews
Delta
7.9
Good
8,015 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,665 reviews
Delta
7.9
Good
8,015 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

    United Airlines, Lufthansa, and Delta can get you from Raleigh to Porto in just under 15h 20m. Your travel time can differ by up to 3h 35m. There are 3699 mi between Raleigh and Porto. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    American Airlines, at $558, was found to be the cheapest airline from Raleigh to Porto.Alternate airlines to your destination round-trip include Delta and KLM. These flights start at 42% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Raleigh to Porto (average of $515). Flying from Raleigh to Porto in September is currently the most expensive (average of $838). 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
Vila Nova de Gaia

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Top 7 airlines flying from Raleigh to Porto

Discover the top 7 airlines that operate flights from Raleigh 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 December 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$558Average$872FlexibilityNo cancel feeOn-time71%
DeltaCheapest$597Average$792FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$618Average$948FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$633Average$823FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$638Average$1,294FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$741Average$1,201FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$887Average$1,360FlexibilityNo cancel feeOn-timeN/A

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