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$258+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — OPO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$589
(United Airlines)

One-way from

$258
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$1,294
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. 16% potential increase in price ($211 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/12. 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 10/225:52 pmRDU - OPO
1 stop10h 53mUnited Airlines
Wed 11/56:00 amOPO - RDU
2 stops22h 41mUnited Airlines
Deal found 6/12$589
This Air Canada deal was found by Cheapflights users on 6/10. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/12:00 pmRDU - OPO
2 stops17h 50mAir Canada
Mon 12/86:00 amOPO - RDU
2 stops43h 50mAir Canada
Deal found 6/10$615
This Air France deal was found by Cheapflights users on 6/12. 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 10/226:20 pmRDU - OPO
1 stop16h 10mAir France
Tue 11/411:45 amOPO - RDU
2 stops16h 20mAir France
Deal found 6/12$621
This Delta deal was found by Cheapflights users on 6/12. 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 10/226:20 pmRDU - OPO
1 stop16h 10mDelta
Tue 11/411:45 amOPO - RDU
1 stop33h 25mDelta
Deal found 6/12$623
This Air France deal was found by Cheapflights users on 6/12. 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 10/226:40 pmRDU - OPO
2 stops15h 50mMultiple Airlines
Wed 11/511:15 amOPO - RDU
2 stops16h 37mMultiple Airlines
Deal found 6/12$639
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2312:12 pmRDU - OPO
2 stops14h 23mAmerican Airlines
Tue 11/48:20 amOPO - RDU
2 stops20h 07mAmerican Airlines
Deal found 6/12$657
This Lufthansa deal was found by Cheapflights users on 6/12. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/243:40 pmRDU - OPO
1 stop14h 35mLufthansa
Wed 11/56:00 amOPO - RDU
2 stops20h 47mLufthansa
Deal found 6/12$660
This KLM deal was found by Cheapflights users on 6/12. 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.
Fri 10/241:50 pmRDU - OPO
2 stops15h 50mKLM
Wed 11/511:45 amOPO - RDU
2 stops16h 20mKLM
Deal found 6/12$701
This Travelocity deal was found by Cheapflights users on 6/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1412:49 pmRDU - OPO
2 stops13h 46mIberia
Thu 8/2112:20 pmOPO - RDU
2 stops16h 31mIberia
Deal found 6/9$832
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:47 pmRDU - OPO
2 stops19h 18mTAP AIR PORTUGAL
Mon 9/2910:35 pmOPO - RDU
2 stops26h 12mTAP AIR PORTUGAL
Deal found 6/12$891
This Gotogate deal was found by Cheapflights users on 6/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/251:09 pmRDU - OPO
2 stops21h 46mBritish Airways
Fri 8/111:15 amOPO - RDU
2 stops33h 22mBritish Airways
Deal found 6/9$1,092

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 12, 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 10/22

5:52 pm-9:45 am

1 stop10h 53m

Porto

Wed 11/5

6:00 am-11:41 pm

2 stops22h 41m

$589

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 12/1

2:00 pm-12:50 pm

2 stops17h 50m

Porto

Mon 12/8

6:00 am-8:50 pm

2 stops43h 50m

$615

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 10/22

6:20 pm-3:30 pm

1 stop16h 10m

Porto

Tue 11/4

11:45 am-11:05 pm

2 stops16h 20m

$621

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 10/22

6:20 pm-3:30 pm

1 stop16h 10m

Porto

Tue 11/4

11:45 am-4:10 pm

1 stop33h 25m

$623

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Wed 10/22

6:40 pm-3:30 pm

2 stops15h 50m

Porto

Wed 11/5

11:15 am-10:52 pm

2 stops16h 37m

$639

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Thu 10/23

12:12 pm-7:35 am

2 stops14h 23m

Porto

Tue 11/4

8:20 am-11:27 pm

2 stops20h 07m

$657

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Fri 10/24

3:40 pm-11:15 am

1 stop14h 35m

Porto

Wed 11/5

6:00 am-9:47 pm

2 stops20h 47m

$660

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Fri 10/24

1:50 pm-10:40 am

2 stops15h 50m

Porto

Wed 11/5

11:45 am-11:05 pm

2 stops16h 20m

$701

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Thu 8/14

12:49 pm-7:35 am

2 stops13h 46m

Porto

Thu 8/21

12:20 pm-11:51 pm

2 stops16h 31m

$832

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Tue 9/9

1:47 pm-2:05 pm

2 stops19h 18m

Porto

Mon 9/29

10:35 pm-7:47 pm

2 stops26h 12m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 17 results
1
2

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 June 9, 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 $1,047). 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 June 12, 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.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 12, 2025.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

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!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

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!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

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.

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

    United Airlines, at $589, was found to be the cheapest airline from Raleigh to Porto.Alternate airlines to your destination round-trip include Air Canada and Air France. These flights start at 43% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Raleigh to Porto one-way?

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $569. United Airlines flights start at $583 while deals on Lufthansa start at $661 one-way.

  • 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 $1,047). 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 Raleigh?

Book flights to Raleigh if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Top 6 airlines flying from Raleigh to Porto

Discover the top 6 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$573Average$919FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$583Average$643FlexibilityNo cancel feeOn-time77%
KLMCheapest$609Average$975FlexibilityNo cancel feeOn-time75%
DeltaCheapest$659Average$887FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$741Average$1,275FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$823Average$1,299FlexibilityNo cancel feeOn-time76%

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