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Cheap flights from Porto to California from $387

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to California departing on 12/12. 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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0 bags

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Find the cheapest flights from Porto to California

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
5:35 pm - 6:50 pmOPO-LAX
33h 15m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:55 pmLAX-OPO
37h 25m1 stop
$583Scandinavian Airlines
Find Deal
Mon, Dec 15 - Wed, Dec 31
Scandinavian Airlines Logo
5:35 pm - 2:35 pmOPO-SFO
29h 00m1 stop
Scandinavian Airlines Logo
4:40 pm - 4:45 pmSFO-OPO
16h 05m1 stop
$602Scandinavian Airlines
Find Deal
Fri, Dec 12 - Sun, Dec 28
TAP AIR PORTUGAL Logo
8:00 pm - 3:00 pmOPO-LAX
27h 00m1 stop
TAP AIR PORTUGAL Logo
4:45 pm - 3:00 pmLAX-OPO
14h 15m1 stop
$614TAP AIR PORTUGAL
Find Deal
Mon, Nov 17 - Tue, Dec 2
TAP AIR PORTUGAL Logo
6:55 am - 3:00 pmOPO-LAX
16h 05m1 stop
TAP AIR PORTUGAL Logo
4:45 pm - 3:00 pmLAX-OPO
14h 15m1 stop
$615TAP AIR PORTUGAL
Find Deal
Sat, Feb 7 - Tue, Feb 10
SWISS Logo
12:05 pm - 4:30 pmOPO-SFO
36h 25m1 stop
SWISS Logo
7:25 pm - 11:15 amSFO-OPO
31h 50m1 stop
$694SWISS
Find Deal
Tue, Nov 18 - Mon, Nov 24
Multiple Airlines Logo
6:30 am - 3:35 pmOPO-SFO
17h 05m1 stop
Multiple Airlines Logo
5:20 pm - 8:30 pmSFO-OPO
19h 10m1 stop
$703Multiple Airlines
Find Deal
Mon, Nov 17 - Mon, Dec 1
Lufthansa Logo
6:15 am - 8:35 pmOPO-SFO
21h 20m1 stop
Lufthansa Logo
2:40 pm - 10:55 pmSFO-OPO
24h 15m1 stop
$705Lufthansa
Find Deal
Sat, Mar 28 - Tue, Apr 7
Multiple Airlines Logo
6:15 am - 8:35 pmOPO-SFO
21h 20m1 stop
Multiple Airlines Logo
7:40 pm - 6:30 pmSFO-OPO
14h 50m1 stop
$710Multiple Airlines
Find Deal
Sat, Mar 28 - Sun, Apr 5
Lufthansa Logo
6:00 am - 8:00 pmOPO-SFO
22h 00m1 stop
Lufthansa Logo
1:45 pm - 11:25 pmSFO-OPO
25h 40m1 stop
$712Lufthansa
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Wed, Apr 1 - Sun, Apr 5
SWISS Logo
12:05 pm - 4:30 pmOPO-SFO
36h 25m1 stop
SWISS Logo
12:50 pm - 11:15 amSFO-OPO
38h 25m2 stops
$713SWISS
Find Deal
Tue, Nov 18 - Mon, Nov 24

Scandinavian Airlines flights from Porto to California

Our best Scandinavian Airlines deals on Porto to California flight tickets
Scandinavian Airlines
Dec 15
OPO5:35 pmPorto
33h 15m
1 stop
LAX6:50 pmLos Angeles
Dec 31
LAX7:30 pmLos Angeles
37h 25m
1 stop
OPO4:55 pmPorto
$583
Find similar
Scandinavian Airlines
Dec 12
OPO5:35 pmPorto
29h 00m
1 stop
SFO2:35 pmSan Francisco
Dec 28
SFO4:40 pmSan Francisco
16h 05m
1 stop
OPO4:45 pmPorto
$602
Find similar
Scandinavian Airlines
Mar 30
OPO11:50 amPorto
34h 50m
1 stop
SFO2:40 pmSan Francisco
Apr 9
SFO4:45 pmSan Francisco
31h 55m
1 stop
OPO8:40 amPorto
$688
Find similar

TAP AIR PORTUGAL flights from Porto to California

Our best TAP AIR PORTUGAL deals on Porto to California flight tickets
TAP AIR PORTUGAL
Nov 17
OPO8:00 pmPorto
27h 00m
1 stop
LAX3:00 pmLos Angeles
Dec 2
LAX4:45 pmLos Angeles
14h 15m
1 stop
OPO3:00 pmPorto
$614
Find similar
TAP AIR PORTUGAL
Feb 7
OPO6:55 amPorto
16h 05m
1 stop
LAX3:00 pmLos Angeles
Feb 10
LAX4:45 pmLos Angeles
14h 15m
1 stop
OPO3:00 pmPorto
$615
Find similar
TAP AIR PORTUGAL
Jan 23
OPO9:00 amPorto
15h 05m
1 stop
SFO4:05 pmSan Francisco
Jan 31
SFO4:35 pmSan Francisco
14h 25m
1 stop
OPO3:00 pmPorto
$625
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Porto to 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 November 2, 2025.
Use the filters below to find and compare flights from Porto to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Mon 12/15

5:35 pm-6:50 pm

1 stop33h 15m

Los Angeles

Wed 12/31

7:30 pm-4:55 pm

1 stop37h 25m

$583

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 12/12

5:35 pm-2:35 pm

1 stop29h 00m

San Francisco

Sun 12/28

4:40 pm-4:45 pm

1 stop16h 05m

$602

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Mon 11/17

8:00 pm-3:00 pm

1 stop27h 00m

Los Angeles

Tue 12/2

4:45 pm-3:00 pm

1 stop14h 15m

$614

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Sat 2/7

6:55 am-3:00 pm

1 stop16h 05m

Los Angeles

Tue 2/10

4:45 pm-3:00 pm

1 stop14h 15m

$615

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Tue 11/18

12:05 pm-4:30 pm

1 stop36h 25m

San Francisco

Mon 11/24

7:25 pm-11:15 am

1 stop31h 50m

$694

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 11/17

6:30 am-3:35 pm

1 stop17h 05m

San Francisco

Mon 12/1

5:20 pm-8:30 pm

1 stop19h 10m

$703

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sat 3/28

6:15 am-8:35 pm

1 stop21h 20m

San Francisco

Tue 4/7

2:40 pm-10:55 pm

1 stop24h 15m

$705

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sat 3/28

6:15 am-8:35 pm

1 stop21h 20m

San Francisco

Sun 4/5

7:40 pm-6:30 pm

1 stop14h 50m

$710

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Wed 4/1

6:00 am-8:00 pm

1 stop22h 00m

San Francisco

Sun 4/5

1:45 pm-11:25 pm

1 stop25h 40m

$712

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Tue 11/18

12:05 pm-4:30 pm

1 stop36h 25m

San Francisco

Mon 11/24

12:50 pm-11:15 am

2 stops38h 25m

$713

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 California from

How to get the cheapest flight ticket from Porto to 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 month to fly to California?

The month of January is another great option to travel to California, with average flight prices from Porto averaging around $770.

What is the cheapest day to depart on your flight to California?

The cheapest day to depart from Porto to California is on a Tuesday. Travelers who choose to depart for California on a Tuesday will often find tickets for as low as $712. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to California on Friday is $1,031.

What is the cheapest time of day to depart on your flight to California?

The cheapest time of day to fly to California is in the afternoon when flights can be purchased for as low as $802. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $857 on average. Flights to California from Porto in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to California?

You are more likely to see cheaper flights to California from Porto when booking weeks ahead of your departure date. In general, you can expect to find flights to California for around $875 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to California from Porto for as low as $722 on momondo.

Can stopping save me money on Porto to California flights?

You could potentially save up to 29% on your flight if you consider stops on a Porto to California flight.

Cheap Porto to California flight deals and tips

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

Direct flights

None
There are no direct flights from Porto to California. There are no popular flight routes from Porto to California.
Search flight deals

  • When did momondo last update prices for flights from Porto Airport to California?

    Prices for flights from Porto Airport to California are refreshed on a daily basis.

  • How many operators does momondo search for flights from Porto Airport to California?

  • How old do you have to be to fly from Porto Airport to California?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Porto Airport to California.

  • What documentation or ID do you need to fly to California?

    The travel and health documents you'll need for your trip to California may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at California. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Porto to California

Compare and see reviews for airlines that fly from Porto to California with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $670Free CancellationRating
6.8
7,544 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $675Free CancellationRating
7.1
2,042 reviews
Search TAP AIR PORTUGAL flights

Why use momondo?

Why should I use momondo to find a flight deal from Porto to California?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Porto to California for you.

Can I find flights from Porto to California with flexible booking policies on momondo?

Flights from Porto to California with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Porto to California?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to California from Porto.

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

If you are not ready to book a flight from Porto to California now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to California and let you know when they change.

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