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$766+ Cheap flights from Portugal 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — OAK
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Portugal to Oakland

Best flights from Portugal to Oakland
Discover carefully curated flight deals from Portugal to Oakland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 1/1411:05 amLIS - OAK
2 stops31h 58mMultiple Airlines
Mon 1/265:17 pmOAK - LIS
2 stops31h 48mMultiple Airlines
Deal found 12/17$766
This Delta deal was found by Cheapflights users on 12/17. 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 2/111:15 amOPO - OAK
2 stops44h 38mDelta
Sun 2/85:55 amOAK - OPO
2 stops20h 35mDelta
Deal found 12/17$775
This British Airways deal was found by Cheapflights users on 12/15. 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.
Thu 1/226:35 pmLIS - OAK
2 stops34h 05mBritish Airways
Mon 1/2611:43 amOAK - LIS
2 stops40h 22mBritish Airways
Deal found 12/15$909
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 2/18:20 amOPO - OAK
3 stops20h 20mMultiple Airlines
Sun 2/811:08 amOAK - OPO
3 stops24h 52mMultiple Airlines
Deal found 12/17$1,147
This British Airways deal was found by Cheapflights users on 12/17. 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 1/117:05 amLIS - OAK
2 stops21h 35mBritish Airways
Sun 1/1811:08 amOAK - LIS
2 stops26h 37mBritish Airways
Deal found 12/17$1,284
This Turkish Airlines deal was found by Cheapflights users on 12/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:05 amLIS - OAK
2 stops25h 34mMultiple Airlines
Sat 4/187:00 amOAK - LIS
2 stops32h 35mMultiple Airlines
Deal found 12/16$1,507

Find flight deals from Portugal to Oakland

Keep the following information in mind while searching for Portugal to Oakland flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$766
(American Airlines)

Popular in

January

Cheapest in

February

Average price

$826
Provider with most accurate pricing for Lisbon Humberto Delgado-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Francisco flights.
Search Deals
From Portugal to Oakland
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal 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 18, 2025.
Use the filters below to find and compare flights from Portugal to Oakland that are best for you.

Fly from

Portugal

Fly to

Oakland

Route

Depart

Return

Price

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 1/14

11:05 am-11:03 am

2 stops31h 58m

Oakland

Mon 1/26

5:17 pm-9:05 am

2 stops31h 48m

$766

PortoOakland

OPO - OAK

OPOOAK

Porto

Sun 2/1

11:15 am-11:53 pm

2 stops44h 38m

Oakland

Sun 2/8

5:55 am-10:30 am

2 stops20h 35m

$775

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Thu 1/22

6:35 pm-8:40 pm

2 stops34h 05m

Oakland

Mon 1/26

11:43 am-12:05 pm

2 stops40h 22m

$909

PortoOakland

OPO - OAK

OPOOAK

Porto

Sun 2/1

8:20 am-8:40 pm

3 stops20h 20m

Oakland

Sun 2/8

11:08 am-8:00 pm

3 stops24h 52m

$1,147

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sun 1/11

7:05 am-8:40 pm

2 stops21h 35m

Oakland

Sun 1/18

11:08 am-9:45 pm

2 stops26h 37m

$1,284

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sat 4/4

6:05 am-11:39 pm

2 stops25h 34m

Oakland

Sat 4/18

7:00 am-11:35 pm

2 stops32h 35m

$1,507

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 1/16

5:30 am-4:14 pm

2 stops18h 44m

$798

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 1/30

5:30 am-4:14 pm

2 stops18h 44m

$799

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 1/28

5:30 am-4:14 pm

2 stops18h 44m

$799

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Mon 1/26

5:30 am-4:14 pm

2 stops18h 44m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 18 results
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Best time to book a flight from Portugal to Oakland

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

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

Currently, January is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $552). Flying from Portugal to Oakland, California in August is currently the most expensive (average of $675). 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 Portugal to Oakland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Oakland from Portugal?

    Oakland (OAK) is the airport you will fly into if you book a flight from Portugal to Oakland. It is only a 7.0 mi journey from Oakland (OAK) to Oakland’s city center.

  • How long is the flight from Portugal to Oakland, California?

    There are many flights that can get you from Portugal to Oakland, California in 34h 05m. Fly via Delta or British Airways to get the fastest option. There are 5653 mi between Portugal and Oakland, California. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $552). Flying from Portugal to Oakland, California in August is currently the most expensive (average of $675). 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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