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$277+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LAX
may. 5 — may. 121
lun. 5/5
lun. 5/12
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 abril 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$564
(Connections by easyJet)

One-way from

$277
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$959
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 ($194 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 April 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 abril 30, 2025.

This Connections by easyJet deal was found by Cheapflights users on 4/28. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/246:05 pmOPO - LAX
1 stop31h 25mMultiple Airlines
dom. 6/87:45 pmLAX - OPO
1 stop19h 25mMultiple Airlines
Deal found 4/28$564
This Air France deal was found by Cheapflights users on 4/29. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/116:20 pmOPO - SFO
1 stop25h 25mMultiple Airlines
mar. 5/273:05 pmSFO - OPO
1 stop16h 25mMultiple Airlines
Deal found 4/29$665
This Delta deal was found by Cheapflights users on 4/29. 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.
dom. 5/119:20 amOPO - SFO
1 stop16h 55mDelta
mar. 5/273:05 pmSFO - OPO
1 stop16h 25mDelta
Deal found 4/29$671
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
lun. 5/121:30 pmOPO - LAS
1 stop16h 28mAir Transat
mar. 5/274:45 pmLAS - OPO
1 stop35h 10mAir Transat
Deal found 4/29$695
This British Airways deal was found by Cheapflights users on 4/29. 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.
dom. 5/119:25 pmOPO - SFO
1 stop24h 25mBritish Airways
mar. 5/277:30 pmSFO - OPO
1 stop16h 00mBritish Airways
Deal found 4/29$697
This Air Canada deal was found by Cheapflights users on 4/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/912:50 pmOPO - SFO
2 stops36h 17mAir Canada
sáb. 9/2011:50 amSFO - OPO
1 stop13h 45mAir Canada
Deal found 4/29$710
This United Airlines deal was found by Cheapflights users on 4/29. 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.
dom. 9/711:20 amOPO - SFO
1 stop31h 51mUnited Airlines
sáb. 9/2011:50 amSFO - OPO
1 stop13h 45mUnited Airlines
Deal found 4/29$711
This Lufthansa deal was found by Cheapflights users on 4/29. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/86:15 amOPO - SFO
1 stop20h 45mLufthansa
vie. 9/199:05 pmSFO - OPO
1 stop18h 15mLufthansa
Deal found 4/29$753
This AirNGo deal was found by Cheapflights users on 4/29. 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.
lun. 5/126:30 amOPO - LAS
1 stop14h 55mMultiple Airlines
mar. 5/271:57 pmLAS - OPO
2 stops17h 33mMultiple Airlines
Deal found 4/29$758
This American Airlines deal was found by Cheapflights users on 4/29. 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.
mié. 5/712:20 pmOPO - SFO
1 stop35h 50mAmerican Airlines
mié. 5/212:25 pmSFO - OPO
2 stops17h 30mAmerican Airlines
Deal found 4/29$768
This Delta deal was found by Cheapflights users on 4/29. 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.
vie. 6/136:40 amOPO - LAS
2 stops23h 00mDelta
vie. 6/208:25 pmLAS - OPO
1 stop13h 45mDelta
Deal found 4/29$771
This Delta deal was found by Cheapflights users on 4/28. 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.
mar. 9/26:15 amOPO - LAX
1 stop16h 35mDelta
vie. 9/1212:15 pmLAX - OPO
2 stops19h 15mDelta
Deal found 4/28$774

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 abril 30, 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

sáb. 5/24

6:05 pm-5:30 pm

1 stop31h 25m

Los Angeles

dom. 6/8

7:45 pm-11:10 pm

1 stop19h 25m

$564

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

dom. 5/11

6:20 pm-11:45 am

1 stop25h 25m

San Francisco

mar. 5/27

3:05 pm-3:30 pm

1 stop16h 25m

$665

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

dom. 5/11

9:20 am-6:15 pm

1 stop16h 55m

San Francisco

mar. 5/27

8:58 am-3:30 pm

2 stops22h 32m

$671

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

lun. 5/12

1:30 pm-9:58 pm

1 stop16h 28m

Las Vegas Harry Reid Intl

mar. 5/27

4:45 pm-11:55 am

1 stop35h 10m

$695

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

dom. 5/11

9:25 pm-1:50 pm

1 stop24h 25m

San Francisco

mar. 5/27

7:30 pm-7:30 pm

1 stop16h 00m

$697

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

mar. 9/9

12:50 pm-5:07 pm

2 stops36h 17m

San Francisco

sáb. 9/20

11:50 am-9:35 am

1 stop13h 45m

$710

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

dom. 9/7

11:20 am-11:11 am

1 stop31h 51m

San Francisco

sáb. 9/20

11:50 am-9:35 am

1 stop13h 45m

$711

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

lun. 9/8

6:15 am-7:00 pm

1 stop20h 45m

San Francisco

vie. 9/19

9:05 pm-11:20 pm

1 stop18h 15m

$753

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

lun. 5/12

6:30 am-1:25 pm

1 stop14h 55m

Las Vegas Harry Reid Intl

mar. 5/27

1:57 pm-3:30 pm

2 stops17h 33m

$758

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

lun. 9/8

12:20 pm-12:16 am

2 stops19h 56m

San Francisco

vie. 9/19

2:28 pm-7:55 pm

2 stops21h 27m

$768

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 55 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 abril 30, 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 abril 30, 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
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
385 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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?

    $433 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on Vueling and TAP AIR PORTUGAL, with prices starting from $495 and $508, 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 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 abril 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$665Average$898FlexibilityNo cancel feeOn-time76%
KLMCheapest$758Average$937FlexibilityNo cancel feeOn-time75%

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