Porto

$288+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — OPO
Aug 19 — Aug 261
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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 August 14, 2025.

Round-trip from

$589
(United Airlines)

One-way from

$288
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$1,145
From Raleigh-Durham to Porto
One-way flight from Raleigh-Durham to Porto
Highest demand for flights based on searches. 19% potential increase in price ($254 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Average for round-trip flights in August 2025

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 August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/13. 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.
Tue 10/285:15 pmRDU - OPO
1 stop12h 15mUnited Airlines
Fri 11/76:00 amOPO - RDU
2 stops22h 41mUnited Airlines
Deal found 8/13$589
This United Airlines deal was found by Cheapflights users on 8/13. 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 11/35:15 pmRDU - OPO
1 stop11h 15mUnited Airlines
Mon 11/106:00 amOPO - RDU
2 stops40h 23mUnited Airlines
Deal found 8/13$609
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:36 pmRDU - OPO
1 stop10h 54mUnited Airlines
Sun 11/96:00 amOPO - RDU
2 stops22h 41mUnited Airlines
Deal found 8/13$647
This Iberia deal was found by Cheapflights users on 8/13. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/263:04 pmRDU - OPO
2 stops12h 36mIberia
Sun 11/912:25 pmOPO - RDU
2 stops33h 28mIberia
Deal found 8/13$649
This United deal was found by Cheapflights users on 8/13. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/34:00 pmRDU - OPO
1 stop14h 40mMultiple Airlines
Mon 11/1012:35 pmOPO - RDU
1 stop15h 55mMultiple Airlines
Deal found 8/13$664
This Mytrip deal was found by Cheapflights users on 8/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:00 amRDU - OPO
2 stops22h 00mMultiple Airlines
Fri 10/37:10 amOPO - RDU
2 stops18h 13mMultiple Airlines
Deal found 8/11$681
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/293:40 pmRDU - OPO
1 stop13h 50mMultiple Airlines
Wed 10/811:00 amOPO - RDU
2 stops26h 18mMultiple Airlines
Deal found 8/11$691
This British Airways deal was found by Cheapflights users on 8/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:50 pmRDU - OPO
1 stop14h 50mBritish Airways
Sun 11/98:05 pmOPO - RDU
1 stop26h 30mBritish Airways
Deal found 8/13$696
This Air Canada deal was found by Cheapflights users on 8/11. 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 9/294:00 pmRDU - OPO
1 stop12h 35mAir Canada
Tue 10/76:00 amOPO - RDU
2 stops43h 23mAir Canada
Deal found 8/11$742

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 August 14, 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 10/28

5:15 pm-9:30 am

1 stop12h 15m

Porto

Fri 11/7

6:00 am-11:41 pm

2 stops22h 41m

$589

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 11/3

5:15 pm-9:30 am

1 stop11h 15m

Porto

Mon 11/10

6:00 am-5:23 pm

2 stops40h 23m

$609

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 10/26

6:36 pm-9:30 am

1 stop10h 54m

Porto

Sun 11/9

6:00 am-11:41 pm

2 stops22h 41m

$647

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Tue 10/28

3:15 pm-9:30 am

1 stop14h 15m

Porto

Fri 11/7

12:30 pm-2:05 pm

1 stop30h 35m

$649

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 10/26

3:04 pm-7:40 am

2 stops12h 36m

Porto

Sun 11/9

12:25 pm-4:53 pm

2 stops33h 28m

$649

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 11/3

4:00 pm-11:40 am

1 stop14h 40m

Porto

Mon 11/10

12:35 pm-11:30 pm

1 stop15h 55m

$664

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Fri 9/26

9:00 am-12:00 pm

2 stops22h 00m

Porto

Fri 10/3

7:10 am-8:23 pm

2 stops18h 13m

$681

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Mon 9/29

3:40 pm-10:30 am

1 stop13h 50m

Porto

Wed 10/8

11:00 am-8:18 am

2 stops26h 18m

$691

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Sun 10/26

9:50 pm-4:40 pm

1 stop14h 50m

Porto

Sun 11/9

8:05 pm-5:35 pm

1 stop26h 30m

$696

RaleighPorto

RDU - OPO

RDUOPO

Raleigh-Durham

Tue 9/2

2:46 pm-6:25 pm

2 stops22h 39m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 13 results
1
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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 August 8, 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 $1,029). 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 August 14, 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 August 14, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United 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.
8.0
Very good

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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!
8.0
Very good
8.0
Very good

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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!
8.0
Very good

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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!
8.0
Very good

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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!
8.0
Very good

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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!
8.0
Very good

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

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

    American Airlines, at $608, 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 40% 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 $1,029). 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

Browse thousands of different options on Cheapflights for your next trip

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$608Average$887FlexibilityNo cancel feeOn-time71%
KLMCheapest$609Average$975FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$633Average$1,192FlexibilityNo cancel feeOn-time76%
DeltaCheapest$650Average$844FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$741Average$1,281FlexibilityNo cancel feeOn-time69%
TAP AIR PORTUGALCheapest$887Average$1,360FlexibilityNo cancel feeOn-timeN/A

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