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$584+ Cheap flights from Portugal to Oakland, CA (OAK)

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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — OAK
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Portugal to Oakland

Keep the following information in mind while searching for Portugal to Oakland flight deals. Data was last updated November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$730
(KLM)

One-way from

$584
(British Airways)

Popular in

January

Cheapest in

February

Average price

$825
Provider with most accurate pricing for Lisbon Humberto Delgado-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Francisco flights.
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From Portugal to Oakland
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One-way flight from Portugal to Oakland
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Portugal to Oakland

Cheapest flights from Portugal to Oakland
Explore the most affordable flight options available from Portugal to Oakland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This KLM deal was found by Cheapflights users on 11/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2111:25 amLIS - OAK
2 stops36h 46mMultiple Airlines
Wed 11/265:55 amOAK - LIS
2 stops21h 25mMultiple Airlines
Deal found 11/3$730
This KLM deal was found by Cheapflights users on 11/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:30 pmLIS - OAK
2 stops32h 41mMultiple Airlines
Tue 11/255:55 amOAK - LIS
2 stops25h 15mMultiple Airlines
Deal found 11/1$731
This Virgin Atlantic deal was found by Cheapflights users on 11/2. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:40 amLIS - OAK
2 stops21h 23mVirgin Atlantic
Tue 11/255:55 amOAK - LIS
2 stops42h 05mVirgin Atlantic
Deal found 11/2$944
This British Airways deal was found by Cheapflights users on 11/2. 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 12/225:30 pmOPO - OAK
2 stops38h 29mBritish Airways
Tue 1/69:49 amOAK - OPO
2 stops23h 56mBritish Airways
Deal found 11/2$945
This Delta deal was found by Cheapflights users on 11/2. 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.
Thu 12/1811:20 amOPO - OAK
2 stops44h 48mDelta
Wed 1/75:55 amOAK - OPO
2 stops25h 30mDelta
Deal found 11/2$974
This British Airways deal was found by Cheapflights users on 11/2. 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 12/225:30 pmOPO - OAK
2 stops38h 29mBritish Airways
Mon 1/53:01 pmOAK - OPO
2 stops42h 44mBritish Airways
Deal found 11/2$991
This Delta deal was found by Cheapflights users on 11/2. 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 12/2111:15 amOPO - OAK
2 stops36h 49mDelta
Wed 1/74:54 pmOAK - OPO
2 stops38h 31mDelta
Deal found 11/2$1,016
This Delta deal was found by Cheapflights users on 11/2. 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 12/206:00 amOPO - OAK
2 stops42h 04mDelta
Tue 1/64:54 pmOAK - OPO
2 stops38h 31mDelta
Deal found 11/2$1,091
This British Airways deal was found by Cheapflights users on 11/2. 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 12/185:35 pmOPO - OAK
2 stops38h 24mBritish Airways
Mon 1/53:01 pmOAK - OPO
2 stops42h 44mBritish Airways
Deal found 11/2$1,153
This British Airways deal was found by Cheapflights users on 11/2. 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.
Fri 12/196:05 pmOPO - OAK
2 stops37h 54mBritish Airways
Tue 1/69:49 amOAK - OPO
2 stops23h 56mBritish Airways
Deal found 11/2$1,164
This British Airways deal was found by Cheapflights users on 11/2. 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.
Fri 12/196:05 pmOPO - OAK
2 stops37h 54mBritish Airways
Mon 1/53:01 pmOAK - OPO
2 stops42h 44mBritish Airways
Deal found 11/2$1,210
This British Airways deal was found by Cheapflights users on 11/2. 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 12/225:30 pmOPO - OAK
2 stops38h 29mBritish Airways
Sat 1/33:01 pmOAK - OPO
2 stops20h 14mBritish Airways
Deal found 11/2$1,249

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 November 3, 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

Fri 11/21

11:25 am-4:11 pm

2 stops36h 46m

Oakland

Wed 11/26

5:55 am-11:20 am

2 stops21h 25m

$730

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Thu 11/20

3:30 pm-4:11 pm

2 stops32h 41m

Oakland

Tue 11/25

5:55 am-3:10 pm

2 stops25h 15m

$731

PortoOakland

OPO - OAK

OPOOAK

Porto

Wed 4/1

5:00 am-11:53 pm

2 stops26h 53m

Oakland

Sun 4/5

5:55 am-6:10 pm

2 stops28h 15m

$756

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 4/1

11:40 am-11:53 pm

2 stops20h 13m

Oakland

Sun 4/5

5:55 am-2:50 pm

2 stops24h 55m

$759

PortoOakland

OPO - OAK

OPOOAK

Porto

Wed 4/1

11:25 am-4:34 pm

2 stops37h 09m

Oakland

Sun 4/5

1:15 pm-6:10 pm

2 stops20h 55m

$812

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Thu 11/20

10:40 am-12:03 am

2 stops21h 23m

Oakland

Tue 11/25

5:55 am-8:00 am

2 stops42h 05m

$944

PortoOakland

OPO - OAK

OPOOAK

Porto

Mon 12/22

5:30 pm-11:59 pm

2 stops38h 29m

Oakland

Tue 1/6

9:49 am-5:45 pm

2 stops23h 56m

$945

PortoOakland

OPO - OAK

OPOOAK

Porto

Thu 12/18

11:20 am-12:08 am

2 stops44h 48m

Oakland

Wed 1/7

5:55 am-3:25 pm

2 stops25h 30m

$974

PortoOakland

OPO - OAK

OPOOAK

Porto

Mon 12/22

11:25 am-11:58 pm

2 stops44h 33m

Oakland

Wed 1/7

4:54 pm-10:25 pm

2 stops45h 31m

$974

PortoOakland

OPO - OAK

OPOOAK

Porto

Thu 12/18

11:20 am-12:08 am

2 stops44h 48m

Oakland

Tue 1/6

4:54 pm-3:25 pm

2 stops38h 31m

$974

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 32 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, February is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $554). 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 26h 53m. Fly via Delta, KLM, or British Airways to get the fastest option. There are 5555 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, February is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $554). 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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