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$464+ Cheap flights from Oakland, CA (OAK) 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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — OPO
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Oakland to Porto

Cheapest flights from Oakland to Porto
Explore the most affordable flight options available from Oakland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Delta deal was found by Cheapflights users on 1/26. 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 3/85:55 am
OAK
-
OPO
2 stops26h 30m
Delta
Sun 3/1511:15 am
OPO
-
OAK
2 stops43h 31m
Delta
Deal found 1/26$959
This Delta deal was found by Cheapflights users on 1/27. 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 4/55:55 am
OAK
-
OPO
2 stops25h 30m
Delta
Mon 4/1311:25 am
OPO
-
OAK
2 stops44h 29m
Delta
Deal found 1/27$1,047
This Delta deal was found by Cheapflights users on 1/26. 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.
Sat 3/75:55 am
OAK
-
OPO
2 stops20h 35m
Delta
Sun 3/1511:15 am
OPO
-
OAK
2 stops43h 31m
Delta
Deal found 1/26$1,063
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:31 pm
OAK
-
OPO
2 stops38h 14m
Multiple Airlines
Thu 3/192:05 pm
OPO
-
OAK
2 stops40h 38m
Multiple Airlines
Deal found 1/26$1,147
This KAYAK deal was found by Cheapflights users on 1/27. 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.
Sat 3/710:43 am
OAK
-
OPO
2 stops24h 32m
British Airways
Sun 3/158:05 pm
OPO
-
OAK
2 stops33h 44m
British Airways
Deal found 1/27$1,150
This Delta deal was found by Cheapflights users on 1/26. 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 3/85:55 am
OAK
-
OPO
2 stops45h 35m
Delta
Sat 3/1411:25 am
OPO
-
OAK
2 stops55h 26m
Delta
Deal found 1/26$1,262
This KAYAK deal was found by Cheapflights users on 1/26. 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.
Sat 3/710:43 am
OAK
-
OPO
2 stops44h 27m
Multiple Airlines
Sat 3/144:10 pm
OPO
-
OAK
2 stops55h 27m
Multiple Airlines
Deal found 1/26$1,264
This KAYAK deal was found by Cheapflights users on 1/27. 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.
Sun 3/86:15 am
OAK
-
OPO
2 stops44h 35m
Multiple Airlines
Sun 3/154:30 pm
OPO
-
OAK
2 stops47h 44m
Multiple Airlines
Deal found 1/27$1,265
This Expedia deal was found by Cheapflights users on 1/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:24 am
OAK
-
OPO
2 stops29h 01m
Multiple Airlines
Mon 7/1311:15 am
OPO
-
OAK
2 stops39h 41m
Multiple Airlines
Deal found 1/27$1,320
This KAYAK deal was found by Cheapflights users on 1/27. 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.
Sat 3/710:43 am
OAK
-
OPO
2 stops20h 22m
Multiple Airlines
Sun 3/156:15 am
OPO
-
OAK
2 stops24h 43m
Multiple Airlines
Deal found 1/27$1,333

Find flight deals from Oakland to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Oakland (OAK) 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$903
(Delta)

One-way from

$464
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$892
Provider with most accurate pricing for San Francisco-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Porto flights.
Search Deals
From Oakland to Porto
Search Deals
One-way flight from Oakland to Porto
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($255 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oakland 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 January 27, 2026.
Use the filters below to find and compare flights from Oakland to Porto that are best for you.

Fly from

Oakland

Fly to

Porto

Route

Depart

Return

Price

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sun 3/8

5:55 am-3:25 pm

2 stops26h 30m

Porto

Sun 3/15

11:15 am-11:46 pm

2 stops43h 31m

$959

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 3/7

5:55 am-10:30 am

2 stops20h 35m

Porto

Sun 3/15

11:15 am-11:46 pm

2 stops43h 31m

$1,063

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Thu 3/12

5:31 pm-2:45 pm

2 stops38h 14m

Porto

Thu 3/19

2:05 pm-11:43 pm

2 stops40h 38m

$1,147

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 3/7

10:43 am-7:15 pm

2 stops24h 32m

Porto

Sun 3/15

8:05 pm-10:49 pm

2 stops33h 44m

$1,150

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sun 3/8

5:55 am-10:30 am

2 stops45h 35m

Porto

Sat 3/14

11:25 am-11:51 am

2 stops55h 26m

$1,262

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 3/7

10:43 am-3:10 pm

2 stops44h 27m

Porto

Sat 3/14

4:10 pm-4:37 pm

2 stops55h 27m

$1,264

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 7/4

10:24 am-11:25 pm

2 stops29h 01m

Porto

Mon 7/13

11:15 am-6:56 pm

2 stops39h 41m

$1,320

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 3/7

10:43 am-3:05 pm

2 stops20h 22m

Porto

Sun 3/15

6:15 am-11:58 pm

2 stops24h 43m

$1,333

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Fri 3/27

7:00 am-8:45 am

2 stops42h 45m

Porto

Sun 4/5

4:40 pm-5:46 pm

2 stops57h 06m

$1,428

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sun 7/12

6:30 am-6:35 pm

3 stops52h 05m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 11 results
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Best time to book a flight from Oakland to Porto

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

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

Currently, March is the cheapest month in which you can book a flight from Oakland, California to Porto (average of $468). Flying from Oakland, California to Porto in July is currently the most expensive (average of $807). 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 Oakland 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 Oakland, California to Porto?

    Delta can get you from Oakland, California to Porto in just under 21h 35m. Your travel time can differ by up to . Airlines will cover a distance of 5555 mi.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Oakland, California to Porto (average of $468). Flying from Oakland, California to Porto in July is currently the most expensive (average of $807). 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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