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$294+ Cheap flights from California to Porto (OPO)

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from California to Porto

Keep the following information in mind while searching for California to Porto flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$470
(oojo)

One-way from

$294
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$742
Provider with most accurate pricing for Los Angeles-Porto flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Porto flights.
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From California to Porto
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One-way flight from California to Porto
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High demand for flights, 3% potential price rise
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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 October 2025
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Find flight deals from California to Porto

Cheapest flights from California to Porto
Explore the most affordable flight options available from California to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 11/275:30 pmLAX - OPO
1 stop22h 10mMultiple Airlines
Thu 12/47:25 pmOPO - LAX
1 stop29h 10mMultiple Airlines
Deal found 10/30$448
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Thu 11/275:30 pmLAX - OPO
1 stop22h 10mMultiple Airlines
Fri 12/126:30 amOPO - LAX
2 stops22h 38mMultiple Airlines
Deal found 10/30$456
This Lufthansa deal was found by Cheapflights users on 10/29. 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.
Wed 12/35:35 pmSAN - OPO
1 stop22h 05mLufthansa
Sun 12/76:15 amOPO - SAN
1 stop17h 30mLufthansa
Deal found 10/29$477
This Expedia deal was found by Cheapflights users on 10/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:30 pmLAX - OPO
1 stop22h 10mMultiple Airlines
Sat 12/611:55 amOPO - LAX
1 stop36h 40mMultiple Airlines
Deal found 10/30$479
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/2711:45 amLAX - OPO
1 stop13h 45mUnited Airlines
Thu 12/46:00 amOPO - LAX
3 stops25h 20mUnited Airlines
Deal found 10/30$484
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 12/37:10 amSAN - OPO
2 stops19h 20mDelta
Sun 12/75:00 amOPO - SAN
2 stops25h 54mDelta
Deal found 10/29$492
This Delta deal was found by Cheapflights users on 10/30. 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.
Sat 11/295:45 amLAX - OPO
2 stops20h 45mDelta
Sat 12/66:00 amOPO - LAX
2 stops24h 28mDelta
Deal found 10/30$492
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 12/35:25 amSMF - OPO
2 stops21h 05mDelta
Sun 12/711:15 amOPO - SMF
2 stops57h 17mDelta
Deal found 10/29$492
This oojo deal was found by Cheapflights users on 10/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:10 pmLAX - OPO
1 stop32h 00mSWISS
Thu 12/412:05 pmOPO - LAX
1 stop36h 30mSWISS
Deal found 10/30$493
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:30 pmLAX - OPO
1 stop22h 10mLufthansa
Sat 12/61:45 pmOPO - LAX
2 stops31h 20mLufthansa
Deal found 10/30$510
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:25 pmSFO - OPO
1 stop31h 50mSWISS
Tue 12/97:25 pmOPO - SFO
1 stop29h 05mSWISS
Deal found 10/28$512
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:25 pmSFO - OPO
1 stop31h 50mSWISS
Mon 12/157:20 pmOPO - SFO
1 stop29h 10mSWISS
Deal found 10/28$513

Cheapflights Fare Finder

 
Customize your flight search to find flights from California to Porto 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 October 30, 2025.
Use the filters below to find and compare flights from California to Porto that are best for you.

Fly from

California

Fly to

Porto

Route

Depart

Return

Price

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

5:35 pm-11:40 pm

1 stop22h 05m

Porto

Sun 12/7

6:15 am-3:45 pm

1 stop17h 30m

$477

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 1/17

7:10 pm-6:35 pm

1 stop15h 25m

Porto

Sat 1/24

6:00 am-5:17 pm

2 stops19h 17m

$479

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 2/11

7:10 pm-11:10 am

1 stop32h 00m

Porto

Wed 2/18

12:10 pm-4:35 pm

1 stop36h 25m

$482

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 2/10

7:10 pm-11:15 am

1 stop32h 05m

Porto

Fri 2/20

7:20 pm-4:35 pm

1 stop29h 15m

$482

BurbankPorto

BUR - OPO

BUROPO

Burbank Bob Hope

Thu 11/27

7:15 am-9:30 am

2 stops18h 15m

Porto

Thu 12/4

6:00 am-9:59 pm

3 stops23h 59m

$484

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 11/27

11:45 am-9:30 am

1 stop13h 45m

Porto

Thu 12/4

6:00 am-11:20 pm

3 stops25h 20m

$484

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

7:10 am-10:30 am

2 stops19h 20m

Porto

Sun 12/7

5:00 am-10:54 pm

2 stops25h 54m

$492

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 11/29

5:45 am-10:30 am

2 stops20h 45m

Porto

Sat 12/6

6:00 am-10:28 pm

2 stops24h 28m

$492

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Wed 12/3

5:25 am-10:30 am

2 stops21h 05m

Porto

Sun 12/7

11:15 am-12:32 pm

2 stops57h 17m

$492

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 12/6

7:25 pm-6:35 pm

1 stop15h 10m

Porto

Fri 12/12

7:20 pm-4:30 pm

1 stop29h 10m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 60 results
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Best time to book a flight from California to Porto

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

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

Currently, May is the cheapest month in which you can book a flight from California to Porto (average of $413). Flying from California to Porto in July is currently the most expensive (average of $805). 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 CA to OPO?

Find hourly flight availability from California to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s optimal to fly from California to Porto in the afternoon. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from California to Porto?

Use this chart to determine the cheapest time to fly round-trip from California to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their California to Porto flight should consider departing on Saturday at noon when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

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

    Located just 6.8 mi from the city center, Porto (OPO) is the airport most travelers will use when flying to Porto from California.

  • How long is the flight from California to Porto?

    Departing from California to Porto will take you 18h 15m. The distance from California to Porto is about 5574 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from California to Porto are Lufthansa ($444), Air Canada ($453), and United Airlines ($460).

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

    The most popular route from California to Porto is San Francisco - Porto. You may also consider Los Angeles - Porto or Sacramento Intl - Porto.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from California to Porto (average of $413). Flying from California to Porto in July is currently the most expensive (average of $805). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for California to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from California to Porto

Discover the top 10 airlines that operate flights from California to Porto. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$402Average$609FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$527Average$781FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$533Average$828FlexibilityNo cancel feeOn-time70%
IberiaCheapest$540Average$1,048FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$550Average$1,025FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$574Average$1,171FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$574Average$911FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$610Average$965FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$615Average$1,104FlexibilityNo cancel feeOn-time69%
DeltaCheapest$661Average$985FlexibilityNo cancel feeOn-timeN/A

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