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Cheap flights from Portugal to San Francisco from $627

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 1/22. 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.
KLM Logo
3:30 pm - 4:14 pmLIS-OAK
32h 44m2 stops
KLM Logo
5:55 am - 6:45 pmOAK-LIS
28h 50m2 stops
$681KLM
Find Deal
Thu, Jan 15 - Thu, Jan 22
Delta Logo
6:00 am - 11:53 pmOPO-OAK
49h 53m2 stops
Delta Logo
4:54 pm - 3:25 pmOAK-OPO
38h 31m2 stops
$697Delta
Find Deal
Wed, Jan 21 - Sun, Jan 25
Delta Logo
6:00 am - 11:52 amOPO-OAK
61h 52m2 stops
Delta Logo
5:55 am - 10:30 amOAK-OPO
44h 35m2 stops
$698Delta
Find Deal
Wed, Jan 21 - Sun, Jan 25
Delta Logo
11:25 am - 9:38 pmLIS-OAK
42h 13m2 stops
Delta Logo
5:55 am - 3:10 pmOAK-LIS
25h 15m2 stops
$699Delta
Find Deal
Fri, Jan 16 - Tue, Jan 20
Delta Logo
11:25 am - 9:38 pmLIS-OAK
42h 13m2 stops
Delta Logo
5:55 am - 8:00 amOAK-LIS
42h 05m2 stops
$703Delta
Find Deal
Fri, Jan 16 - Tue, Jan 20
British Airways Logo
7:05 am - 4:28 pmLIS-OAK
41h 23m2 stops
British Airways Logo
11:43 am - 5:40 pmOAK-LIS
21h 57m2 stops
$911British Airways
Find Deal
Fri, Jan 16 - Tue, Jan 20
Multiple Airlines Logo
5:05 am - 11:39 pmLIS-OAK
26h 34m2 stops
Multiple Airlines Logo
7:00 am - 10:10 pmOAK-LIS
31h 10m2 stops
$1,168Multiple Airlines
Find Deal
Sun, Apr 19 - Fri, Apr 24
Multiple Airlines Logo
7:25 am - 11:39 pmLIS-OAK
24h 14m2 stops
Multiple Airlines Logo
7:00 am - 10:10 pmOAK-LIS
31h 10m2 stops
$1,199Multiple Airlines
Find Deal
Tue, May 5 - Fri, May 8
Multiple Airlines Logo
5:05 am - 11:39 pmLIS-OAK
26h 34m2 stops
Multiple Airlines Logo
7:00 am - 10:10 pmOAK-LIS
31h 10m2 stops
$1,284Multiple Airlines
Find Deal
Sat, May 2 - Sun, May 10
Multiple Airlines Logo
5:05 am - 10:11 pmLIS-OAK
25h 06m2 stops
Multiple Airlines Logo
12:48 pm - 10:10 pmOAK-LIS
25h 22m2 stops
$1,753Multiple Airlines
Find Deal
Sun, May 24 - Fri, Jun 5

Delta flights from Portugal to Oakland, California

Our best Delta deals on Portugal to Oakland, California flight tickets
Delta
Jan 21
OPO6:00 amPorto
49h 53m
2 stops
OAK11:53 pmOakland
Jan 25
OAK4:54 pmOakland
38h 31m
2 stops
OPO3:25 pmPorto
$697
Find similar
Delta
Jan 21
OPO6:00 amPorto
61h 52m
2 stops
OAK11:52 amOakland
Jan 25
OAK5:55 amOakland
44h 35m
2 stops
OPO10:30 amPorto
$698
Find similar
Delta
Jan 16
LIS11:25 amLisbon Humberto Delgado
42h 13m
2 stops
OAK9:38 pmOakland
Jan 20
OAK5:55 amOakland
25h 15m
2 stops
LIS3:10 pmLisbon Humberto Delgado
$699
Find similar

British Airways flights from Portugal to Oakland, California

Our best British Airways deals on Portugal to Oakland, California flight tickets
British Airways
Jan 16
LIS7:05 amLisbon Humberto Delgado
41h 23m
2 stops
OAK4:28 pmOakland
Jan 20
OAK11:43 amOakland
21h 57m
2 stops
LIS5:40 pmLisbon Humberto Delgado
$911
Find similar
British Airways
Dec 10
LIS10:40 amLisbon Humberto Delgado
21h 19m
2 stops
OAK11:59 pmOakland
Dec 17
OAK2:31 pmOakland
19h 09m
2 stops
LIS5:40 pmLisbon Humberto Delgado
$3,558
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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 December 3, 2025.
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

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Thu 1/15

3:30 pm-4:14 pm

2 stops32h 44m

Oakland

Thu 1/22

5:55 am-6:45 pm

2 stops28h 50m

$681

PortoOakland

OPO - OAK

OPOOAK

Porto

Wed 1/21

6:00 am-11:53 pm

2 stops49h 53m

Oakland

Sun 1/25

4:54 pm-3:25 pm

2 stops38h 31m

$697

PortoOakland

OPO - OAK

OPOOAK

Porto

Wed 1/21

6:00 am-11:52 am

2 stops61h 52m

Oakland

Sun 1/25

5:55 am-10:30 am

2 stops44h 35m

$698

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 1/16

11:25 am-9:38 pm

2 stops42h 13m

Oakland

Tue 1/20

5:55 am-3:10 pm

2 stops25h 15m

$699

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 1/16

11:25 am-9:38 pm

2 stops42h 13m

Oakland

Tue 1/20

5:55 am-8:00 am

2 stops42h 05m

$703

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Fri 1/16

7:05 am-4:28 pm

2 stops41h 23m

Oakland

Tue 1/20

11:43 am-5:40 pm

2 stops21h 57m

$911

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sun 4/19

5:05 am-11:39 pm

2 stops26h 34m

Oakland

Fri 4/24

7:00 am-10:10 pm

2 stops31h 10m

$1,168

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Tue 5/5

7:25 am-11:39 pm

2 stops24h 14m

Oakland

Fri 5/8

7:00 am-10:10 pm

2 stops31h 10m

$1,199

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sat 5/2

5:05 am-11:39 pm

2 stops26h 34m

Oakland

Sun 5/10

7:00 am-10:10 pm

2 stops31h 10m

$1,284

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

Sun 5/24

5:05 am-10:11 pm

2 stops25h 06m

Oakland

Fri 6/5

12:48 pm-10:10 pm

2 stops25h 22m

$1,753

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

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

What airlines fly to Oakland, California?

TAP AIR PORTUGAL, British Airways 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 45% of people opting to fly with this airline when traveling to Oakland, California. Keep in mind that there are 8 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

22h 41m

Direct flights

None
The fastest flight from Portugal to Oakland, California takes 22h 41m
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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  • 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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