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$307+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — OPO
Jul 29 — Aug 51
Wed 7/29
Wed 8/5
1 adult, Economy
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Cheap flight deals from Raleigh to Porto

Cheapest flights from Raleigh to Porto
Explore the most affordable flight options available from Raleigh to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 29, 2026.

This KLM deal was found by Cheapflights users on 6/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/282:00 pm
RDU
-
OPO
1 stop14h 05m
KLM
Wed 11/45:55 am
OPO
-
RDU
1 stop15h 20m
KLM
Deal found 6/28$716
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 10/2812:45 pm
RDU
-
OPO
1 stop16h 45m
United Airlines
Wed 11/46:00 am
OPO
-
RDU
2 stops20h 42m
United Airlines
Deal found 6/28$717
This Delta deal was found by Cheapflights users on 6/28. 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 10/2810:00 am
RDU
-
OPO
1 stop18h 05m
Delta
Tue 11/35:00 am
OPO
-
RDU
2 stops23h 42m
Delta
Deal found 6/28$718
This Orbitz deal was found by Cheapflights users on 6/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:09 pm
RDU
-
OPO
2 stops26h 46m
Multiple Airlines
Wed 11/47:20 pm
OPO
-
RDU
2 stops30h 13m
Multiple Airlines
Deal found 6/28$719
This Air France deal was found by Cheapflights users on 6/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:00 pm
RDU
-
OPO
2 stops15h 05m
Multiple Airlines
Tue 11/35:00 am
OPO
-
RDU
2 stops18h 02m
Multiple Airlines
Deal found 6/28$723
This Orbitz deal was found by Cheapflights users on 6/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:10 am
RDU
-
OPO
1 stop16h 50m
Multiple Airlines
Wed 10/287:20 pm
OPO
-
RDU
2 stops29h 13m
Multiple Airlines
Deal found 6/28$767
This Air France deal was found by Cheapflights users on 6/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:30 pm
RDU
-
OPO
2 stops15h 05m
Air France
Wed 11/45:55 am
OPO
-
RDU
1 stop15h 20m
Air France
Deal found 6/28$769
This Air France deal was found by Cheapflights users on 6/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:30 pm
RDU
-
OPO
2 stops15h 05m
Multiple Airlines
Wed 11/45:00 am
OPO
-
RDU
2 stops17h 00m
Multiple Airlines
Deal found 6/28$772
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Thu 10/292:52 pm
RDU
-
OPO
1 stop14h 38m
United Airlines
Wed 11/412:35 pm
OPO
-
RDU
1 stop16h 11m
United Airlines
Deal found 6/28$776
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 10/219:00 am
RDU
-
OPO
3 stops17h 00m
United Airlines
Wed 10/286:00 am
OPO
-
RDU
2 stops32h 44m
United Airlines
Deal found 6/28$777

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 June 29, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$716
(KLM)

One-way from

$307
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$948
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. 15% potential increase in price ($172 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 29, 2026.
Use the filters below to find and compare flights from Raleigh to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 10/28

2:00 pm-8:05 am

1 stop14h 05m

Porto

Wed 11/4

5:55 am-4:15 pm

1 stop15h 20m

$716

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Thu 10/29

2:52 pm-9:30 am

1 stop14h 38m

Porto

Wed 11/4

12:35 pm-11:46 pm

1 stop16h 11m

$776

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 10/21

9:00 am-7:00 am

3 stops17h 00m

Porto

Wed 10/28

6:00 am-10:44 am

2 stops32h 44m

$777

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 10/21

9:57 am-10:30 am

2 stops19h 33m

Porto

Sun 10/25

5:00 am-12:29 am

2 stops23h 29m

$839

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 8/10

9:10 am-7:00 am

1 stop16h 50m

Porto

Wed 8/26

11:20 am-4:02 pm

2 stops33h 42m

$862

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 8/12

10:05 am-7:00 am

2 stops15h 55m

Porto

Wed 8/19

11:20 am-6:40 pm

2 stops36h 20m

$867
Quickest round-trip

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 8/10

3:44 pm-10:30 am

2 stops13h 46m

Porto

Wed 8/26

5:55 am-3:55 pm

1 stop15h 00m

$870

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 9/27

4:54 pm-3:30 pm

2 stops17h 36m

Porto

Sat 10/3

5:00 am-4:22 pm

2 stops16h 22m

$894
Cheapest one-way

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Tue 7/21

2:31 pm-9:15 pm

3 stops25h 44m

$331
Quickest one-way

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Fri 10/30

6:17 pm-9:30 am

1 stop11h 13m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 14 resultsSorted by cheapest first
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 June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 Raleigh-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Raleigh-Porto flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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?

To ensure you get the cheapest price possible for a flight from Raleigh to Porto, you should look to book at least 32 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 $492). Flying from Raleigh to Porto in July is currently the most expensive (average of $1,258). 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 June 29, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andTAP AIR PORTUGAL 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
7.8
Good
8,450 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Overall

7.8

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
7.8
Good
8,450 reviews
Delta
7.8
Good
8,450 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Overall

7.8

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
9,895 reviews
Delta
7.8
Good
8,450 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Overall

7.8

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.
TAP AIR PORTUGAL
7.2
Good
2,308 reviews
Delta
7.8
Good
8,450 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Overall

7.8

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
7.1
Good
11,764 reviews
Delta
7.8
Good
8,450 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Overall

7.8

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
8,106 reviews
Delta
7.8
Good
8,450 reviews

Crew

8.5

Entertainment

7.8

Boarding

8.1

Food

7.2

Comfort

7.8

Overall

7.8

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?

    KLM, United Airlines, and Delta can get you from Raleigh to Porto in just under 14h 05m. Your travel time can differ by up to 5h 28m. 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?

    Delta, at $597, was found to be the cheapest airline from Raleigh to Porto.Alternate airlines to your destination round-trip include American Airlines and Lufthansa. These flights start at 34% 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 $492). Flying from Raleigh to Porto in July is currently the most expensive (average of $1,258). 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
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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Top 5 airlines flying from Raleigh to Porto

Discover the top 5 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 June 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$597Average$838FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$608Average$893FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$633Average$892FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$782Average$1,251FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$887Average$1,360FlexibilityNo cancel feeOn-timeN/A

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