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Oakland

$774+ Cheap flights from Porto (OPO) to Oakland, CA (OAK)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — OAK
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Porto to Oakland

Best flights from Porto to Oakland
Discover carefully curated flight deals from Porto to Oakland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2011:15 amOPO - OAK
2 stops44h 38mDelta
Sun 1/255:55 amOAK - OPO
2 stops20h 35mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2011:15 amOPO - OAK
2 stops56h 37mDelta
Mon 1/2612:33 pmOAK - OPO
2 stops37h 57mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1611:15 amOPO - OAK
2 stops42h 23mDelta
Tue 1/275:55 amOAK - OPO
2 stops20h 35mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1911:15 amOPO - OAK
2 stops36h 59mDelta
Sun 1/255:55 amOAK - OPO
2 stops20h 35mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1911:15 amOPO - OAK
2 stops36h 59mDelta
Mon 1/2612:33 pmOAK - OPO
2 stops37h 57mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1611:15 amOPO - OAK
2 stops42h 23mDelta
Mon 1/2612:33 pmOAK - OPO
2 stops37h 57mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/166:30 amOPO - OAK
2 stops61h 27mDelta
Sun 1/255:55 amOAK - OPO
2 stops20h 35mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2011:15 amOPO - OAK
2 stops56h 37mDelta
Tue 1/275:55 amOAK - OPO
2 stops20h 35mDelta
Deal found 12/10$774
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/166:30 amOPO - OAK
2 stops47h 08mDelta
Wed 1/285:55 amOAK - OPO
2 stops32h 30mDelta
Deal found 12/10$780
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/166:30 amOPO - OAK
2 stops47h 08mDelta
Thu 1/295:55 amOAK - OPO
2 stops44h 35mDelta
Deal found 12/10$780
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1911:15 amOPO - OAK
2 stops36h 59mDelta
Thu 1/294:54 pmOAK - OPO
2 stops45h 26mDelta
Deal found 12/10$780
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2011:15 amOPO - OAK
2 stops44h 38mDelta
Thu 1/294:54 pmOAK - OPO
2 stops45h 26mDelta
Deal found 12/10$780

Find flight deals from Porto to Oakland

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Oakland (OAK). 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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$774
(Delta)

Popular in

October

Cheapest in

September

Average price

$771
Provider with most accurate pricing for Porto-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto-San Francisco flights.
Search Deals
From Porto to Oakland
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 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 Porto to Oakland 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 12, 2025.
Use the filters below to find and compare flights from Porto to Oakland that are best for you.

Fly from

Porto

Fly to

Oakland

Route

Depart

Return

Price

PortoOakland

OPO - OAK

OPOOAK

Porto

Tue 1/20

11:15 am-11:53 pm

2 stops44h 38m

Oakland

Sun 1/25

5:55 am-10:30 am

2 stops20h 35m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Tue 1/20

11:15 am-11:52 am

2 stops56h 37m

Oakland

Mon 1/26

12:33 pm-10:30 am

2 stops37h 57m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Fri 1/16

11:15 am-9:38 pm

2 stops42h 23m

Oakland

Tue 1/27

5:55 am-10:30 am

2 stops20h 35m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Mon 1/19

11:15 am-4:14 pm

2 stops36h 59m

Oakland

Sun 1/25

5:55 am-10:30 am

2 stops20h 35m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Mon 1/19

11:15 am-4:14 pm

2 stops36h 59m

Oakland

Mon 1/26

12:33 pm-10:30 am

2 stops37h 57m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Fri 1/16

11:15 am-9:38 pm

2 stops42h 23m

Oakland

Mon 1/26

12:33 pm-10:30 am

2 stops37h 57m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Fri 1/16

6:30 am-11:57 am

2 stops61h 27m

Oakland

Sun 1/25

5:55 am-10:30 am

2 stops20h 35m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Tue 1/20

11:15 am-11:52 am

2 stops56h 37m

Oakland

Tue 1/27

5:55 am-10:30 am

2 stops20h 35m

$774

PortoOakland

OPO - OAK

OPOOAK

Porto

Fri 1/16

6:30 am-9:38 pm

2 stops47h 08m

Oakland

Wed 1/28

5:55 am-10:25 pm

2 stops32h 30m

$780

PortoOakland

OPO - OAK

OPOOAK

Porto

Fri 1/16

6:30 am-9:38 pm

2 stops47h 08m

Oakland

Thu 1/29

5:55 am-10:30 am

2 stops44h 35m

$780

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 12 results
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Best time to book a flight from Porto to Oakland

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

What is the cheapest month to book a flight from Porto to Oakland, California?

Currently, January is the cheapest month in which you can book a flight from Porto to Oakland, California (average of $552). Flying from Porto to Oakland, California in July is currently the most expensive (average of $824). 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.

Related info for your journey

Find useful and relevant information for your journey from Porto to Oakland. 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 Porto to Oakland, California?

    Airlines like Delta fly from Porto to Oakland, California in about 42h 23m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 5555 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto to Oakland 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 Porto to Oakland, California?

    Currently, January is the cheapest month in which you can book a flight from Porto to Oakland, California (average of $552). Flying from Porto to Oakland, California in July is currently the most expensive (average of $824). 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

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