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$733+ 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — OPO
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This Air France deal was found by Cheapflights users on 4/24. 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.
Mon 4/275:55 am
OAK
-
OPO
2 stops32h 05m
Multiple Airlines
Wed 5/137:10 pm
OPO
-
OAK
2 stops29h 15m
Multiple Airlines
Deal found 4/24$917
This Delta deal was found by Cheapflights users on 4/25. 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 5/136:00 am
OAK
-
OPO
2 stops42h 30m
Delta
Tue 5/265:00 am
OPO
-
OAK
2 stops19h 25m
Delta
Deal found 4/25$1,060
This Delta deal was found by Cheapflights users on 4/25. 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 5/125:05 pm
OAK
-
OPO
2 stops55h 25m
Delta
Tue 5/265:00 am
OPO
-
OAK
2 stops26h 57m
Delta
Deal found 4/25$1,066
This British Airways deal was found by Cheapflights users on 4/23. 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.
Tue 6/2310:22 am
OAK
-
OPO
2 stops25h 08m
British Airways
Mon 6/299:25 pm
OPO
-
OAK
2 stops30h 08m
British Airways
Deal found 4/23$1,410
This British Airways deal was found by Cheapflights users on 4/23. 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.
Mon 6/2210:22 am
OAK
-
OPO
2 stops25h 43m
British Airways
Tue 6/308:55 pm
OPO
-
OAK
2 stops30h 38m
British Airways
Deal found 4/23$1,477
This British Airways deal was found by Cheapflights users on 4/23. 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.
Mon 6/2210:22 am
OAK
-
OPO
2 stops25h 43m
British Airways
Thu 7/27:55 pm
OPO
-
OAK
2 stops31h 38m
British Airways
Deal found 4/23$1,544
This British Airways deal was found by Cheapflights users on 4/23. 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.
Sat 6/2010:22 am
OAK
-
OPO
2 stops26h 18m
British Airways
Tue 6/308:55 pm
OPO
-
OAK
2 stops30h 38m
British Airways
Deal found 4/23$1,547
This British Airways deal was found by Cheapflights users on 4/23. 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 6/2110:20 am
OAK
-
OPO
2 stops26h 15m
British Airways
Tue 6/308:55 pm
OPO
-
OAK
2 stops30h 38m
British Airways
Deal found 4/23$1,555
This British Airways deal was found by Cheapflights users on 4/23. 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.
Sat 6/2010:22 am
OAK
-
OPO
2 stops26h 18m
British Airways
Thu 7/27:55 pm
OPO
-
OAK
2 stops31h 38m
British Airways
Deal found 4/23$1,614
This British Airways deal was found by Cheapflights users on 4/23. 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 6/2110:20 am
OAK
-
OPO
2 stops26h 15m
British Airways
Thu 7/27:55 pm
OPO
-
OAK
2 stops31h 38m
British Airways
Deal found 4/23$1,622
This Delta deal was found by Cheapflights users on 4/25. 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 5/116:00 am
OAK
-
OPO
2 stops25h 25m
Delta
Tue 5/265:00 am
OPO
-
OAK
2 stops19h 25m
Delta
Deal found 4/25$1,640
This British Airways deal was found by Cheapflights users on 4/23. 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.
Tue 6/2310:22 am
OAK
-
OPO
2 stops25h 08m
British Airways
Wed 7/18:20 pm
OPO
-
OAK
2 stops31h 13m
British Airways
Deal found 4/23$1,646

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,060
(Delta)

One-way from

$733
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$683
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. 25% potential increase in price ($308 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 28, 2026.
Use the filters below to find and compare flights from Oakland to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Tue 5/12

5:05 pm-8:30 am

2 stops55h 25m

Porto

Tue 5/26

5:00 am-11:57 pm

2 stops26h 57m

$1,066

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Tue 6/23

10:22 am-7:30 pm

2 stops25h 08m

Porto

Mon 6/29

9:25 pm-7:33 pm

2 stops30h 08m

$1,410

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Wed 6/24

10:22 am-7:05 pm

2 stops24h 43m

Porto

Tue 6/30

8:55 pm-7:33 pm

2 stops30h 38m

$1,410

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Wed 6/24

10:22 am-7:05 pm

2 stops24h 43m

Porto

Thu 7/2

7:55 pm-7:33 pm

2 stops31h 38m

$1,477

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Mon 6/22

10:22 am-8:05 pm

2 stops25h 43m

Porto

Thu 7/2

7:55 pm-7:33 pm

2 stops31h 38m

$1,544
Quickest round-trip

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Mon 5/11

6:00 am-3:25 pm

2 stops25h 25m

Porto

Tue 5/26

5:00 am-4:25 pm

2 stops19h 25m

$1,640

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Thu 6/11

6:22 am-11:25 pm

2 stops33h 03m

Porto

Thu 6/18

6:20 am-9:26 am

2 stops35h 06m

$1,708

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sun 6/21

10:20 am-8:35 pm

2 stops26h 15m

Porto

Fri 6/26

11:15 am-7:46 pm

2 stops40h 31m

$1,920

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sun 6/21

10:20 am-8:35 pm

2 stops26h 15m

Porto

Sat 6/27

10:40 am-7:33 pm

2 stops40h 53m

$2,264
Cheapest one-way

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 6/27

8:22 pm-3:15 pm

3 stops34h 53m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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.

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 and British Airways can get you from Oakland, California to Porto in just under 25h 08m. Your travel time can differ by up to 30h 17m. Airlines will cover a distance of 5555 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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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