HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
California

$359+ Cheap flights from Porto (OPO) to California

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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LAX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto to California with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Porto to California

Keep the following information in mind while searching for Porto to California flight deals. Data was last updated September 15, 2025.

Round-trip from

$478
(Trip.com)

One-way from

$359
(Kiwi.com)

Popular in

October

Cheapest in

February

Average price

$829
From Porto to California
Search Deals
One-way flight from Porto to California
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Porto to California

Cheapest flights from Porto to California
Explore the most affordable flight options available from Porto to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:35 pmOPO - LAX
1 stop31h 25mScandinavian Airlines
Wed 11/267:30 pmLAX - OPO
1 stop37h 25mScandinavian Airlines
Deal found 9/15$478
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:35 pmOPO - SFO
1 stop29h 00mScandinavian Airlines
Thu 12/114:40 pmSFO - OPO
1 stop16h 15mScandinavian Airlines
Deal found 9/15$564
This lastminute.com deal was found by Cheapflights users on 9/14. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:35 pmOPO - SFO
1 stop29h 00mScandinavian Airlines
Sun 11/234:40 pmSFO - OPO
1 stop16h 05mScandinavian Airlines
Deal found 9/14$626
This lastminute.com deal was found by Cheapflights users on 9/14. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:35 pmOPO - LAX
1 stop31h 25mScandinavian Airlines
Wed 11/197:30 pmLAX - OPO
1 stop37h 25mScandinavian Airlines
Deal found 9/14$630
This Mytrip deal was found by Cheapflights users on 9/14. 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 10/18:10 pmOPO - LAX
2 stops26h 40mMultiple Airlines
Sun 10/51:50 pmLAX - OPO
2 stops24h 45mMultiple Airlines
Deal found 9/14$634
This Iberia deal was found by Cheapflights users on 9/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:20 amOPO - SFO
2 stops20h 10mIberia
Thu 12/116:00 amSFO - OPO
2 stops17h 40mIberia
Deal found 9/14$661
This KLM deal was found by Cheapflights users on 9/15. 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 10/66:30 amOPO - SFO
1 stop37h 15mKLM
Sun 10/193:05 pmSFO - OPO
1 stop16h 25mKLM
Deal found 9/15$665
This KLM deal was found by Cheapflights users on 9/15. 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 10/274:10 pmOPO - SFO
1 stop27h 40mKLM
Mon 11/103:40 pmSFO - OPO
1 stop34h 50mKLM
Deal found 9/15$669
This AirNGo deal was found by Cheapflights users on 9/14. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:15 amOPO - SFO
2 stops19h 45mKLM
Wed 10/83:05 pmSFO - OPO
1 stop16h 25mKLM
Deal found 9/14$672
This Delta deal was found by Cheapflights users on 9/15. 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 9/246:15 amOPO - SFO
2 stops19h 32mDelta
Wed 10/810:40 amSFO - OPO
2 stops20h 50mDelta
Deal found 9/15$673
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:15 amOPO - LAX
1 stop33h 40mMultiple Airlines
Thu 11/131:00 pmLAX - OPO
1 stop17h 10mMultiple Airlines
Deal found 9/15$675
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:25 pmOPO - SFO
1 stop24h 05mTAP AIR PORTUGAL
Thu 10/234:20 pmSFO - OPO
1 stop18h 35mTAP AIR PORTUGAL
Deal found 9/15$676

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Porto to California that are best for you.

Fly from

Porto

Fly to

California

Route

Depart

Return

Price

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 12/5

5:35 pm-2:35 pm

1 stop29h 00m

San Francisco

Thu 12/11

4:40 pm-4:55 pm

1 stop16h 15m

$564

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 11/7

5:35 pm-2:35 pm

1 stop29h 00m

San Francisco

Sun 11/23

4:40 pm-4:45 pm

1 stop16h 05m

$640

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Mon 11/3

5:35 pm-5:00 pm

1 stop31h 25m

Los Angeles

Wed 11/19

7:30 pm-4:55 pm

1 stop37h 25m

$651

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 12/5

8:20 am-8:30 pm

2 stops20h 10m

San Francisco

Thu 12/11

6:00 am-7:40 am

2 stops17h 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

Mon 10/27

4:10 pm-12:50 pm

1 stop27h 40m

San Francisco

Mon 11/10

3:40 pm-10:30 am

1 stop34h 50m

$669

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 10/6

6:30 am-11:33 pm

2 stops25h 03m

San Francisco

Sun 10/19

3:05 pm-3:30 pm

1 stop16h 25m

$673

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 10/23

6:30 am-11:14 pm

2 stops24h 44m

San Francisco

Wed 11/5

7:00 am-10:30 am

2 stops19h 30m

$673

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Wed 10/15

6:15 am-7:30 pm

2 stops21h 15m

San Francisco

Thu 10/23

3:05 pm-3:30 pm

1 stop16h 25m

$673

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 10/23

8:20 pm-11:45 am

1 stop23h 25m

San Francisco

Wed 11/5

1:55 pm-10:30 am

1 stop36h 35m

$673

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 52 results
1
2
3
...
6

Best time to book a flight from Porto to California

Have a flexible travel schedule? Discover the best time to fly to California from Porto 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 Porto to California

What is the cheapest month to book a flight from Porto to California?

Currently, January is the cheapest month in which you can book a flight from Porto to California (average of $246). Flying from Porto to California in March is currently the most expensive (average of $325). 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.

How much does it cost to fly round-trip from Porto to California?

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated September 15, 2025.
Read reviews from past customers who have flown Lufthansa from Porto to California. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,407 reviews

Comfort

6.8

Overall

6.8

Food

6.3

Boarding

7.0

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.
Lufthansa
6.8
Okay
7,407 reviews
Lufthansa
6.8
Okay
7,407 reviews

Comfort

6.8

Overall

6.8

Food

6.3

Boarding

7.0

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Jan 2025

FRA - TPA

I had ordered a gluten-free meal through you I double triple checked that through you got screamed at by one of your representatives. She yelled at me and said that she had ordered the mail, she had chosen my seat, and made sure that all my baggage is were paid for. That was a lie. My experience with discover airlines in and of itself was GOOD but your representative was out of line did not do anything that she screamed at me and told me she did and I literally had to call the airlines myself to get my seat selected to double check on my gluten-free meal which still was not on board and to pay for my bags which I thought that I paid for all of them until I got to the airport and I still had to pay for my check back. So cheap flights I will never use you again.

Related info for your journey

Find useful and relevant information for your journey from Porto to California. 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 from for flights from Porto to California?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to California.

  • How long is the flight from Porto to California?

    For as low as $661, Scandinavian Airlines can have you in California from Porto in 20h 10m. The distance between Porto and California is about 5566 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Porto to California?

    The most popular route from Porto to California is Porto - Los Angeles. You may also consider Porto - Long Beach Municipal or Porto - Las Vegas Harry Reid Intl.

  • Can I find deals for flights from Porto to California that include hotel bookings?

    Yes. In addition to deals on Porto to California flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to California.

  • Can I find deals for business class flights from Porto to California?

    Yes. Cheapflights offers flight deals from Porto to California 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 Porto to California?

    Currently, January is the cheapest month in which you can book a flight from Porto to California (average of $246). Flying from Porto to California in March is currently the most expensive (average of $325). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to California

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Newark flights
Lisbon to John F Kennedy Intl flights
Porto to Newark flights
Lisbon to Miami flights
Porto to John F Kennedy Intl flights
Lisbon to LaGuardia flights
Porto to LaGuardia flights
Lisbon to Boston flights
Lisbon to Fort Lauderdale flights
Lisbon to West Palm Beach flights
Lisbon to San Francisco flights
Lisbon to Los Angeles flights
Lisbon to O'Hare Intl flights
Lisbon to Dulles Intl flights
Lisbon to Philadelphia flights
Porto to Miami flights
Faro to John F Kennedy Intl flights
Faro to Newark flights
Faro to LaGuardia flights
Lisbon to Seattle flights
Lisbon to Oakland flights
Ponta Delgada to John F Kennedy Intl flights
Lisbon to Orlando flights
Lisbon to Baltimore flights
Lisbon to Hobby flights
Lisbon to Reagan-National flights
Lisbon to Dallas/Fort Worth flights
Porto to Reagan-National flights
Porto to Dulles Intl flights
Porto to Boston flights
Ponta Delgada to Newark flights
Lisbon to Denver flights
Porto to West Palm Beach flights
Porto to Fort Lauderdale flights
Porto to Baltimore flights
Porto to Orlando flights
Lisbon to George Bush Intcntl flights
Porto to Los Angeles flights
Ponta Delgada to LaGuardia flights
Lisbon to Santa Ana flights
Lisbon to Las Vegas flights
Lisbon to Atlanta flights
Lisbon to Charlotte flights
Porto to O'Hare Intl flights
Faro to Miami flights
Ponta Delgada to Boston flights
Funchal to Boston flights

Top airline flying from Porto to California

Discover the top airline that operate flights from Porto to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$670Average$847FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.