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$341+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LAX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$606
(AirNGo)

One-way from

$341
(CheapOair)

Popular in

July

Cheapest in

February

Average price

$854
From Porto to California
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One-way flight from Porto to California
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Highest demand for flights based on searches. 15% potential increase in price ($158 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This AirNGo deal was found by Cheapflights users on 6/11. 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.
Fri 9/57:00 amOPO - LAX
1 stop15h 35mTAP AIR PORTUGAL
Sat 9/134:40 pmLAX - OPO
1 stop14h 20mTAP AIR PORTUGAL
Deal found 6/11$606
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:35 pmOPO - SFO
1 stop23h 00mTAP AIR PORTUGAL
Sat 10/187:20 pmSFO - OPO
1 stop15h 40mTAP AIR PORTUGAL
Deal found 6/12$613
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:15 amOPO - SFO
2 stops20h 17mAmerican Airlines
Mon 9/226:10 amSFO - OPO
2 stops17h 25mAmerican Airlines
Deal found 6/11$634
This AirNGo deal was found by Cheapflights users on 6/12. 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.
Mon 10/64:20 pmOPO - SFO
1 stop27h 25mMultiple Airlines
Sat 10/181:00 pmSFO - OPO
2 stops18h 30mMultiple Airlines
Deal found 6/12$637
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:50 amOPO - LAS
1 stop19h 38mAir Transat
Thu 11/1310:35 pmLAS - OPO
1 stop24h 30mAir Transat
Deal found 6/11$681
This Iberia deal was found by Cheapflights users on 6/11. 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.
Thu 6/198:15 amOPO - SFO
2 stops20h 43mIberia
Tue 7/225:45 pmSFO - OPO
1 stop14h 10mIberia
Deal found 6/11$697
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Fri 9/56:10 amOPO - LAX
1 stop19h 20mMultiple Airlines
Sat 9/279:30 pmLAX - OPO
2 stops40h 15mMultiple Airlines
Deal found 6/10$704
This SWISS deal was found by Cheapflights users on 6/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:15 pmOPO - SFO
1 stop35h 55mSWISS
Mon 9/222:20 pmSFO - OPO
2 stops19h 05mSWISS
Deal found 6/11$713
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Mon 6/231:30 pmOPO - LAS
1 stop27h 20mMultiple Airlines
Wed 7/99:37 pmLAS - OPO
2 stops51h 13mMultiple Airlines
Deal found 6/10$732
This KLM deal was found by Cheapflights users on 6/11. 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.
Thu 6/198:20 pmOPO - SFO
1 stop23h 25mKLM
Tue 7/223:05 pmSFO - OPO
1 stop16h 25mKLM
Deal found 6/11$743
This British Airways deal was found by Cheapflights users on 6/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/189:10 pmOPO - SFO
2 stops34h 38mBritish Airways
Mon 9/14:30 pmSFO - OPO
1 stop19h 20mBritish Airways
Deal found 6/12$745
This Delta deal was found by Cheapflights users on 6/12. 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.
Fri 9/58:45 pmOPO - LAX
1 stop23h 05mDelta
Sat 9/1311:05 amLAX - OPO
2 stops20h 25mDelta
Deal found 6/12$755

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 June 12, 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

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Fri 9/5

7:00 am-2:35 pm

1 stop15h 35m

Los Angeles

Sat 9/13

4:40 pm-3:00 pm

1 stop14h 20m

$606

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 10/6

10:35 pm-1:35 pm

1 stop23h 00m

San Francisco

Sat 10/18

7:20 pm-7:00 pm

1 stop15h 40m

$613

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 9/18

8:15 am-8:32 pm

2 stops20h 17m

San Francisco

Mon 9/22

6:10 am-7:35 am

2 stops17h 25m

$634

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 10/6

4:20 pm-11:45 am

1 stop27h 25m

San Francisco

Sat 10/18

1:00 pm-3:30 pm

2 stops18h 30m

$637

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Sat 11/1

8:50 am-9:28 pm

1 stop19h 38m

Las Vegas Harry Reid Intl

Thu 11/13

10:35 pm-7:05 am

1 stop24h 30m

$681

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Fri 9/5

6:10 am-5:30 pm

1 stop19h 20m

Los Angeles

Sat 9/27

9:30 pm-9:45 pm

2 stops40h 15m

$704

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 9/18

12:15 pm-4:10 pm

1 stop35h 55m

San Francisco

Mon 9/22

2:20 pm-5:25 pm

2 stops19h 05m

$713

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 6/23

1:30 pm-8:50 am

1 stop27h 20m

Las Vegas Harry Reid Intl

Wed 7/9

9:37 pm-8:50 am

2 stops51h 13m

$732

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

Sun 6/22

8:15 am-4:05 pm

1 stop15h 50m

Los Angeles

Mon 7/7

5:50 pm-3:55 pm

1 stop14h 05m

$734

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 7/18

9:10 pm-11:48 pm

2 stops34h 38m

San Francisco

Mon 9/1

4:30 pm-7:50 pm

1 stop19h 20m

$745

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 59 results
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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 $327). 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.

What is the cheapest time of day to fly from OPO to CA?

Find hourly flight availability from Porto to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Porto to California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in California by month

Plan your trip to California by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in California ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit California when rainfall is around 0.0 in.

Temperature in California by month

Plan your trip to California by taking into account the average temperature totals by month.

If weather is an important factor for your trip to California, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Air Transat from Porto to California. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Transat
7.8
Good
396 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from Porto to California one-way?

    $401 is the cheapest one-way deal found within the past few days, from Vueling. You may also be able to find cheap deals on Iberia and TAP AIR PORTUGAL, with prices starting from $413 and $518, respectively.

  • 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 - San Francisco 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 $327). 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

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Alternative routes for Porto to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Porto to California

Discover the top 3 airlines 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$657Average$873FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$665Average$898FlexibilityNo cancel feeOn-time76%
KLMCheapest$758Average$937FlexibilityNo cancel feeOn-time75%

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