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Cheap flights from Porto to California from $311

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 3/16. 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

Scandinavian Airlines Logo
5:35 pm - 5:00 pmOPO-LAX
31h 25m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:55 pmLAX-OPO
37h 25m1 stop
$478Scandinavian Airlines
Find Deal
Mon, Nov 10 - Wed, Nov 26
Scandinavian Airlines Logo
5:35 pm - 5:00 pmOPO-LAX
31h 25m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:55 pmLAX-OPO
37h 25m1 stop
$486Scandinavian Airlines
Find Deal
Mon, Nov 10 - Wed, Nov 26
Multiple Airlines Logo
8:50 am - 10:12 pmOPO-LAS
20h 22m1 stop
Multiple Airlines Logo
11:25 pm - 7:05 amLAS-OPO
24h 40m1 stop
$621Multiple Airlines
Find Deal
Thu, Mar 12 - Thu, Mar 26
Multiple Airlines Logo
8:50 am - 10:12 pmOPO-LAS
20h 22m1 stop
Multiple Airlines Logo
7:05 pm - 7:05 amLAS-OPO
29h 00m2 stops
$623Multiple Airlines
Find Deal
Thu, Mar 12 - Thu, Mar 26
Iberia Logo
8:40 pm - 9:21 amOPO-SFO
20h 41m2 stops
Iberia Logo
7:00 am - 7:40 amSFO-OPO
16h 40m2 stops
$661Iberia
Find Deal
Fri, Dec 5 - Thu, Dec 11
KLM Logo
6:30 am - 11:45 amOPO-SFO
37h 15m1 stop
KLM Logo
3:05 pm - 3:30 pmSFO-OPO
16h 25m1 stop
$665KLM
Find Deal
Mon, Oct 6 - Sun, Oct 19
KLM Logo
8:10 pm - 11:45 amOPO-SFO
23h 35m1 stop
KLM Logo
3:05 pm - 3:30 pmSFO-OPO
16h 25m1 stop
$667KLM
Find Deal
Wed, Oct 15 - Thu, Oct 23
Iberia Logo
10:00 pm - 10:59 pmOPO-LAX
32h 59m2 stops
Iberia Logo
5:45 pm - 7:40 amLAX-OPO
29h 55m2 stops
$791Iberia
Find Deal
Thu, Oct 2 - Fri, Nov 14
Lufthansa Logo
4:15 pm - 8:15 pmOPO-LAS
36h 00m2 stops
Lufthansa Logo
4:25 pm - 3:15 pmLAS-OPO
14h 50m1 stop
$860Lufthansa
Find Deal
Wed, Feb 18 - Sun, Feb 22
Lufthansa Logo
4:15 pm - 8:15 pmOPO-LAS
36h 00m2 stops
Lufthansa Logo
4:25 pm - 3:15 pmLAS-OPO
14h 50m1 stop
$896Lufthansa
Find Deal
Wed, Feb 18 - Sun, Feb 22

Scandinavian Airlines flights from Porto to California

Our best Scandinavian Airlines deals on Porto to California flight tickets
Scandinavian Airlines
Nov 10
OPO5:35 pmPorto
31h 25m
1 stop
LAX5:00 pmLos Angeles
Nov 26
LAX7:30 pmLos Angeles
37h 25m
1 stop
OPO4:55 pmPorto
$478
Find similar
Scandinavian Airlines
Nov 10
OPO5:35 pmPorto
31h 25m
1 stop
LAX5:00 pmLos Angeles
Nov 26
LAX7:30 pmLos Angeles
37h 25m
1 stop
OPO4:55 pmPorto
$486
Find similar
Scandinavian Airlines
Nov 10
OPO5:35 pmPorto
31h 25m
1 stop
LAX5:00 pmLos Angeles
Nov 26
LAX7:30 pmLos Angeles
37h 25m
1 stop
OPO4:55 pmPorto
$519
Find similar

Delta flights from Porto to California

Our best Delta deals on Porto to California flight tickets
Delta
Sep 24
OPO6:15 amPorto
22h 19m
2 stops
SFO8:34 pmSan Francisco
Oct 8
SFO3:05 pmSan Francisco
16h 25m
1 stop
OPO3:30 pmPorto
$673
Find similar
Delta
Oct 2
OPO6:30 amPorto
16h 20m
1 stop
LAX2:50 pmLos Angeles
Nov 13
LAX6:15 amLos Angeles
20h 10m
2 stops
OPO10:25 amPorto
$770
Find similar
Delta
Oct 3
OPO9:20 amPorto
16h 50m
1 stop
LAX6:10 pmLos Angeles
Nov 14
LAX5:25 amLos Angeles
21h 05m
2 stops
OPO10:30 amPorto
$775
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 September 17, 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 11/10

5:35 pm-5:00 pm

1 stop31h 25m

Los Angeles

Wed 11/26

7:30 pm-4:55 pm

1 stop37h 25m

$478

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Mon 11/10

5:35 pm-5:00 pm

1 stop31h 25m

Los Angeles

Wed 11/26

7:30 pm-4:55 pm

1 stop37h 25m

$486

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Thu 3/12

8:50 am-10:12 pm

1 stop20h 22m

Las Vegas Harry Reid Intl

Thu 3/26

11:25 pm-7:05 am

1 stop24h 40m

$621

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Thu 3/12

8:50 am-10:12 pm

1 stop20h 22m

Las Vegas Harry Reid Intl

Thu 3/26

7:05 pm-7:05 am

2 stops29h 00m

$623

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 12/5

8:40 pm-9:21 am

2 stops20h 41m

San Francisco

Thu 12/11

7:00 am-7:40 am

2 stops16h 40m

$661

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 10/6

6:30 am-11:45 am

1 stop37h 15m

San Francisco

Sun 10/19

3:05 pm-3:30 pm

1 stop16h 25m

$665

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Wed 10/15

8:10 pm-11:45 am

1 stop23h 35m

San Francisco

Thu 10/23

3:05 pm-3:30 pm

1 stop16h 25m

$667

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Thu 10/2

10:00 pm-10:59 pm

2 stops32h 59m

Los Angeles

Fri 11/14

5:45 pm-7:40 am

2 stops29h 55m

$791

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Wed 2/18

4:15 pm-8:15 pm

2 stops36h 00m

Las Vegas Harry Reid Intl

Sun 2/22

4:25 pm-3:15 pm

1 stop14h 50m

$860

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Wed 2/18

4:15 pm-8:15 pm

2 stops36h 00m

Las Vegas Harry Reid Intl

Sun 2/22

4:25 pm-3:15 pm

1 stop14h 50m

$896

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 $778.

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 $874 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 17% 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
7,409 reviews
Search Lufthansa 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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Find better results for your trip to California

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