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$468+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — OPO
Oct 30 — Nov 61
Thu 10/30
Thu 11/6
1 adult, Economy
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Cheap 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 September 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$576
(United Airlines)

One-way from

$468
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$1,068
Provider with most accurate pricing for Raleigh-Durham-Porto flight deals.
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Provider most trusted by Cheapflights users for Raleigh-Durham-Porto flights.
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From Raleigh-Durham to Porto
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One-way flight from Raleigh-Durham to Porto
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Highest demand for flights based on searches. 20% potential increase in price ($258 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 30, 2025.

This United Airlines deal was found by Cheapflights users on 9/30. 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.
Mon 11/103:35 pmRDU - OPO
1 stop12h 55mUnited Airlines
Wed 11/266:00 amOPO - RDU
2 stops35h 23mUnited Airlines
Deal found 9/30$576
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sun 11/96:39 pmRDU - OPO
1 stop9h 51mUnited Airlines
Tue 11/1812:30 pmOPO - RDU
2 stops16h 10mUnited Airlines
Deal found 9/29$583
This Flighttix deal was found by Cheapflights users on 9/30. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/103:35 pmRDU - OPO
1 stop12h 55mLufthansa
Wed 11/2612:35 pmOPO - RDU
1 stop14h 12mLufthansa
Deal found 9/30$585
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Mon 11/1010:35 amRDU - OPO
2 stops17h 55mUnited Airlines
Tue 11/1812:30 pmOPO - RDU
2 stops16h 10mUnited Airlines
Deal found 9/29$587
This Delta deal was found by Cheapflights users on 9/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:00 pmRDU - OPO
2 stops17h 30mDelta
Mon 11/311:15 amOPO - RDU
2 stops34h 21mDelta
Deal found 9/29$591
This Delta deal was found by Cheapflights users on 9/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:00 amRDU - OPO
2 stops20h 30mDelta
Mon 11/311:15 amOPO - RDU
2 stops34h 21mDelta
Deal found 9/29$597
This Delta deal was found by Cheapflights users on 9/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:55 amRDU - OPO
2 stops19h 35mDelta
Mon 11/1711:25 amOPO - RDU
2 stops35h 11mDelta
Deal found 9/29$610
This KAYAK deal was found by Cheapflights users on 9/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/104:00 pmRDU - OPO
1 stop14h 40mLufthansa
Mon 11/1712:30 pmOPO - RDU
2 stops38h 03mLufthansa
Deal found 9/29$619
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sun 11/96:39 pmRDU - OPO
1 stop9h 51mUnited Airlines
Mon 11/176:00 amOPO - RDU
2 stops20h 49mUnited Airlines
Deal found 9/29$633
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/1310:00 amRDU - OPO
2 stops18h 30mUnited Airlines
Tue 11/1812:30 pmOPO - RDU
2 stops16h 10mUnited Airlines
Deal found 9/30$637
This Delta deal was found by Cheapflights users on 9/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:44 amRDU - OPO
2 stops17h 46mDelta
Sun 11/165:00 amOPO - RDU
2 stops18h 55mDelta
Deal found 9/29$641

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 September 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

Tue 11/11

5:15 pm-9:30 am

1 stop11h 15m

Porto

Tue 11/18

12:30 pm-11:40 pm

2 stops16h 10m

$583

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 2/2

2:00 pm-10:30 am

2 stops15h 30m

Porto

Tue 3/3

6:05 am-11:06 pm

2 stops22h 01m

$591

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 11/9

9:55 am-10:30 am

2 stops19h 35m

Porto

Tue 11/18

6:05 am-10:44 pm

2 stops21h 39m

$591

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 2/8

7:10 am-10:30 am

2 stops22h 20m

Porto

Wed 2/25

6:00 am-11:06 pm

2 stops22h 06m

$591

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Tue 2/3

10:00 am-10:30 am

2 stops19h 30m

Porto

Tue 3/3

6:05 am-11:06 pm

2 stops22h 01m

$591

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 10/27

1:00 pm-10:30 am

2 stops17h 30m

Porto

Mon 11/3

11:15 am-4:36 pm

2 stops34h 21m

$591

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 2/4

2:00 pm-10:30 am

2 stops15h 30m

Porto

Thu 2/26

6:35 am-11:06 pm

2 stops21h 31m

$591

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 2/2

4:15 pm-2:55 pm

1 stop17h 40m

Porto

Wed 2/25

6:00 am-6:03 pm

2 stops17h 03m

$599

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 2/2

4:15 pm-11:40 am

1 stop14h 25m

Porto

Tue 3/3

6:00 am-6:03 pm

2 stops17h 03m

$599

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 2/8

7:10 am-10:30 am

2 stops22h 20m

Porto

Thu 2/26

11:20 am-4:45 pm

1 stop34h 25m

$600

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/28

Showing 1-10 of 12 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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 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 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 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 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 September 26, 2025.

To ensure you get the cheapest price possible for a flight from Raleigh to Porto, you should look to book at least 61 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 $523). Flying from Raleigh to Porto in June is currently the most expensive (average of $1,027). 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.

What is the cheapest time of day to fly from RDU to OPO?

Find hourly flight availability from Raleigh to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 30, 2025.

When flying from Raleigh to Porto, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 24% versus a flight in the afternoon.

What is the cheapest day to fly from Raleigh to Porto?

Use this chart to determine the cheapest time to fly round-trip from Raleigh to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Raleigh to Porto flight should consider departing on Sunday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 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
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,931 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
TAP AIR PORTUGAL
7.1
Good
1,996 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,437 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 and Delta can get you from Raleigh to Porto in just under 11h 15m. Your travel time can differ by up to 4h 15m. 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 KLM and Lufthansa. These flights start at 46% 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 $523). Flying from Raleigh to Porto in June is currently the most expensive (average of $1,027). 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

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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 September 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$558Average$887FlexibilityNo cancel feeOn-time71%
KLMCheapest$618Average$975FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$633Average$1,192FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$638Average$1,294FlexibilityNo cancel feeOn-time67%
DeltaCheapest$650Average$844FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$741Average$1,263FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$887Average$1,360FlexibilityNo cancel feeOn-timeN/A

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