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$627+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — OAK
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap 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 February 4, 2026.

This KLM deal was found by Cheapflights users on 2/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/911:25 am
LIS
-
OAK
2 stops36h 49m
Multiple Airlines
Sun 2/155:55 am
OAK
-
LIS
2 stops25h 15m
Multiple Airlines
Deal found 2/2$772
This Delta deal was found by Cheapflights users on 2/2. 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.
Wed 2/1811:15 am
OPO
-
OAK
2 stops44h 36m
Delta
Sun 2/225:55 am
OAK
-
OPO
2 stops20h 35m
Delta
Deal found 2/2$783
This British Airways deal was found by Cheapflights users on 2/3. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/177:40 pm
LIS
-
OAK
2 stops35h 09m
British Airways
Sat 2/216:15 am
OAK
-
LIS
2 stops32h 15m
British Airways
Deal found 2/3$1,050
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/203:30 pm
LIS
-
OAK
2 stops37h 13m
Multiple Airlines
Fri 3/275:55 am
OAK
-
LIS
2 stops34h 15m
Multiple Airlines
Deal found 2/3$1,079
This Gurufare deal was found by Cheapflights users on 2/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/195:00 am
LIS
-
OAK
2 stops25h 43m
Multiple Airlines
Thu 3/2611:47 am
OAK
-
LIS
2 stops20h 18m
Multiple Airlines
Deal found 2/2$1,294
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:30 am
OPO
-
OAK
3 stops24h 19m
Multiple Airlines
Sun 2/229:54 am
OAK
-
OPO
3 stops29h 51m
Multiple Airlines
Deal found 2/2$2,034

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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$783
(Delta)

One-way from

$627
(British Airways)

Popular in

July

Cheapest in

February

Average price

$654
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
Search Deals
One-way flight from Portugal to Oakland
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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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 February 4, 2026.
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

PortoOakland

OPO - OAK

OPOOAK

Porto

Wed 2/18

11:15 am-11:51 pm

2 stops44h 36m

Oakland

Sun 2/22

5:55 am-10:30 am

2 stops20h 35m

$783

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Tue 2/17

7:40 pm-10:49 pm

2 stops35h 09m

Oakland

Sat 2/21

6:15 am-10:30 pm

2 stops32h 15m

$1,050

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 3/20

3:30 pm-9:43 pm

2 stops37h 13m

Oakland

Fri 3/27

5:55 am-11:10 pm

2 stops34h 15m

$1,079

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Thu 3/19

5:00 am-11:43 pm

2 stops25h 43m

Oakland

Thu 3/26

11:47 am-3:05 pm

2 stops20h 18m

$1,294

PortoOakland

OPO - OAK

OPOOAK

Porto

Wed 2/18

6:30 am-10:49 pm

3 stops24h 19m

Oakland

Sun 2/22

9:54 am-11:45 pm

3 stops29h 51m

$2,034

PortoOakland

OPO - OAK

OPOOAK

Porto

Fri 4/24

9:10 pm-10:32 pm

2 stops33h 22m

$627

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Tue 5/19

6:45 pm-7:05 pm

2 stops32h 20m

$637

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sun 4/12

7:20 am-11:43 pm

2 stops48h 23m

$641

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 4/17

6:55 pm-11:43 pm

2 stops36h 48m

$642

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Mon 4/13

6:45 pm-11:43 pm

2 stops36h 58m

$642

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 19 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, March is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $558). Flying from Portugal to Oakland, California in August is currently the most expensive (average of $679). 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 35h 09m. 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, March is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $558). Flying from Portugal to Oakland, California in August is currently the most expensive (average of $679). 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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