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$259+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LAX
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$609
(Travelis)

One-way from

$259
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$975
Provider with most accurate pricing for Porto-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Porto-Los Angeles flights.
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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. 17% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Booking.com deal was found by Cheapflights users on 3/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/121:30 pmOPO - LAS
1 stop16h 28mAir Transat
Tue 5/274:45 pmLAS - OPO
1 stop35h 00mAir Transat
Deal found 3/26$527
This Travelis deal was found by Cheapflights users on 3/27. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:30 amOPO - SFO
1 stop37h 15mKLM
Thu 5/293:05 pmSFO - OPO
1 stop16h 25mKLM
Deal found 3/27$609
This Ticket deal was found by Cheapflights users on 3/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/88:15 amOPO - SFO
1 stop15h 55mBritish Airways
Thu 5/153:50 pmSFO - OPO
2 stops20h 30mBritish Airways
Deal found 3/27$616
This Ticket deal was found by Cheapflights users on 3/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/284:20 pmOPO - SFO
2 stops27h 25mAir France
Mon 5/58:45 pmSFO - OPO
1 stop34h 45mAir France
Deal found 3/27$633
This Delta deal was found by Cheapflights users on 3/27. 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.
Mon 4/146:35 amOPO - SFO
2 stops24h 08mDelta
Mon 4/283:05 pmSFO - OPO
1 stop16h 25mDelta
Deal found 3/27$639
This Ticket deal was found by Cheapflights users on 3/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1411:20 amOPO - SFO
1 stop16h 16mAir Canada
Sun 9/2111:45 pmSFO - OPO
1 stop25h 50mAir Canada
Deal found 3/27$641
This Travelis deal was found by Cheapflights users on 3/27. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/228:15 amOPO - SFO
1 stop15h 55mMultiple Airlines
Thu 5/295:45 pmSFO - OPO
1 stop14h 10mMultiple Airlines
Deal found 3/27$654
This American Airlines deal was found by Cheapflights users on 3/27. 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 9/412:20 pmOPO - SFO
2 stops19h 56mAmerican Airlines
Thu 9/115:45 pmSFO - OPO
1 stop29h 50mAmerican Airlines
Deal found 3/27$659
This Travelis deal was found by Cheapflights users on 3/27. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/88:15 amOPO - SFO
1 stop15h 55mIberia
Thu 5/155:45 pmSFO - OPO
1 stop29h 50mIberia
Deal found 3/27$661
This Ticket deal was found by Cheapflights users on 3/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/88:20 pmOPO - OAK
2 stops35h 29mKLM
Thu 5/156:00 amOAK - OPO
2 stops29h 40mKLM
Deal found 3/27$674
This Mytrip deal was found by Cheapflights users on 3/27. 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.
Fri 5/21:25 pmOPO - LAX
2 stops34h 55mMultiple Airlines
Sat 5/177:30 pmLAX - OPO
3 stops31h 20mMultiple Airlines
Deal found 3/27$676
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:10 pmOPO - SFO
1 stop15h 26mUnited Airlines
Thu 9/115:00 amSFO - OPO
2 stops18h 05mUnited Airlines
Deal found 3/27$680

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 March 28, 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

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

Mon 5/12

1:30 pm-9:58 pm

1 stop16h 28m

Las Vegas Harry Reid Intl

Tue 5/27

4:45 pm-11:45 am

1 stop35h 00m

$527

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 5/22

6:30 am-11:45 am

1 stop37h 15m

San Francisco

Thu 5/29

3:05 pm-3:30 pm

1 stop16h 25m

$609

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 5/8

8:15 am-4:10 pm

1 stop15h 55m

San Francisco

Thu 5/15

3:50 pm-8:20 pm

2 stops20h 30m

$616

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 4/28

4:20 pm-11:45 am

2 stops27h 25m

San Francisco

Mon 5/5

8:45 pm-3:30 pm

1 stop34h 45m

$633

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 4/14

6:35 am-10:43 pm

2 stops24h 08m

San Francisco

Mon 4/28

3:05 pm-3:30 pm

1 stop16h 25m

$639

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sun 9/14

11:20 am-7:36 pm

1 stop16h 16m

San Francisco

Sun 9/21

11:45 pm-9:35 am

1 stop25h 50m

$641

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 5/22

8:15 am-4:10 pm

1 stop15h 55m

San Francisco

Thu 5/29

5:45 pm-3:55 pm

1 stop14h 10m

$654

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 9/4

12:20 pm-12:16 am

2 stops19h 56m

San Francisco

Thu 9/11

5:45 pm-7:35 am

1 stop29h 50m

$659

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 5/8

8:15 am-4:10 pm

1 stop15h 55m

San Francisco

Thu 5/15

5:45 pm-7:35 am

1 stop29h 50m

$661

PortoOakland

OPO - OAK

OPOOAK

Porto

Thu 5/8

8:20 pm-11:49 pm

2 stops35h 29m

Oakland

Thu 5/15

6:00 am-7:40 pm

2 stops29h 40m

$674

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 56 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 $330). 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 March 28, 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 March 28, 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
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Transat
7.8
Good
381 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,570 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,897 reviews

Boarding

8.2

Comfort

8.0

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    $259 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Iberia and Air Transat, with prices starting from $494 and $540, 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 $330). 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 2 airlines flying from Porto to California

Discover the top 2 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$665Average$898FlexibilityNo cancel feeOn-time76%
KLMCheapest$762Average$1,317FlexibilityNo cancel feeOn-time75%
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