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Cheap flights from Portugal to San Francisco from $642

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to San Francisco departing on 6/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portugal to San Francisco

Recent round-trip flight deals from Portugal to San Francisco

Enter your travel dates to find the best prices.
British Airways Logo
4:25 pm - 10:54 pm
LIS
-
OAK
38h 29m
2 stops
British Airways Logo
2:14 pm - 12:55 pm
OAK
-
LIS
38h 41m
2 stops
$1,127British Airways
Wed, Sep 16 - Sun, Sep 20
British Airways Logo
7:20 am - 10:54 pm
LIS
-
OAK
47h 34m
2 stops
British Airways Logo
2:14 pm - 11:05 pm
OAK
-
LIS
24h 51m
2 stops
$1,130British Airways
Wed, Sep 16 - Sun, Sep 20
British Airways Logo
7:20 am - 10:54 pm
LIS
-
OAK
47h 34m
2 stops
British Airways Logo
2:14 pm - 11:05 pm
OAK
-
LIS
24h 51m
2 stops
$1,131British Airways
Wed, Sep 16 - Sun, Sep 20
British Airways Logo
6:50 pm - 10:54 pm
LIS
-
OAK
36h 04m
2 stops
British Airways Logo
7:00 am - 3:20 pm
OAK
-
LIS
25h 20m
2 stops
$6,271British Airways
Sun, Aug 23 - Sat, Mar 27
British Airways Logo
11:00 am - 9:28 pm
LIS
-
OAK
18h 28m
2 stops
British Airways Logo
10:05 am - 4:25 pm
OAK
-
LIS
22h 20m
2 stops
$12,989British Airways
Sat, Aug 22 - Sun, Aug 23

British Airways flights from Portugal to Oakland, California

Our best British Airways deals on Portugal to Oakland, California flight tickets
British Airways
Sep 16
LIS4:25 pmLisbon Humberto Delgado
38h 29m
2 stops
OAK10:54 pmOakland
Sep 20
OAK2:14 pmOakland
38h 41m
2 stops
LIS12:55 pmLisbon Humberto Delgado
$1,127
British Airways
Sep 16
LIS7:20 amLisbon Humberto Delgado
47h 34m
2 stops
OAK10:54 pmOakland
Sep 20
OAK2:14 pmOakland
24h 51m
2 stops
LIS11:05 pmLisbon Humberto Delgado
$1,130
British Airways
Sep 16
LIS7:20 amLisbon Humberto Delgado
47h 34m
2 stops
OAK10:54 pmOakland
Sep 20
OAK2:14 pmOakland
24h 51m
2 stops
LIS11:05 pmLisbon Humberto Delgado
$1,131

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to Oakland, California 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, momondo users made 832,500 searches. Data last updated May 13, 2026.
Use the filters below to find and compare flights from Portugal to Oakland, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 9/16

4:25 pm-10:54 pm

2 stops38h 29m

Oakland

Sun 9/20

2:14 pm-12:55 pm

2 stops38h 41m

$1,127

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 9/16

7:20 am-10:54 pm

2 stops47h 34m

Oakland

Sun 9/20

2:14 pm-11:05 pm

2 stops24h 51m

$1,130

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 9/16

7:20 am-10:54 pm

2 stops47h 34m

Oakland

Sun 9/20

2:14 pm-11:05 pm

2 stops24h 51m

$1,131

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sun 8/23

6:50 pm-10:54 pm

2 stops36h 04m

Oakland

Sat 3/27

7:00 am-3:20 pm

2 stops25h 20m

$6,271
Quickest round-trip

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sat 8/22

11:00 am-9:28 pm

2 stops18h 28m

Oakland

Sun 8/23

10:05 am-4:25 pm

2 stops22h 20m

$12,989
Cheapest one-way

PortoOakland

OPO - OAK

OPOOAK

Porto

Mon 6/1

1:30 pm-6:21 pm

3 stops36h 51m

$642

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Wed 10/7

6:45 pm-6:54 pm

2 stops32h 09m

$693

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 10/9

6:55 pm-6:54 pm

2 stops31h 59m

$694

PortoOakland

OPO - OAK

OPOOAK

Porto

Mon 6/1

1:30 pm-6:34 pm

2 stops37h 04m

$708

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 9/25

7:20 am-9:26 pm

2 stops22h 06m

$717

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Portugal to Oakland, California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Portugal to Oakland?

British Airways and Finnair are the most popular carriers operating from Portugal to Oakland

What airlines fly to Oakland, California?

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Oakland, California from Portugal according to our data. TAP AIR PORTUGAL is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Oakland, California. Keep in mind that there are 7 different airlines that fly to Oakland, California on a routine basis, so you have a few additional options to choose from.

Cheap Portugal to Oakland, California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portugal to Oakland, California

Fastest flight time

18h 28m

Direct flights

None
The fastest flight from Portugal to Oakland, California takes 18h 28m
There are no direct flights from Portugal to Oakland, California. There are no popular flight routes from Portugal to Oakland, California.
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Frequently asked questions about flying from Portugal to Oakland, California

  • When did momondo last update prices for flights from Portugal to Oakland Airport?

    Prices for flights from Portugal to Oakland Airport are updated daily.

  • How old do you have to be to fly from Portugal to Oakland Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to Oakland Airport.

  • What documentation or ID do you need to fly to Oakland Airport?

    The necessary travel and health documents for your Oakland Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to Oakland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portugal to Oakland. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portugal to Oakland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portugal to Oakland flights to just show those with flexible booking policies.

How can momondo help me find flights from Portugal to Oakland?

Once you have performed a search for Portugal to Oakland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portugal to Oakland right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Oakland from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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