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$261+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Gotogate deal was found by Cheapflights users on 12/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:30 pmLAX - OPO
2 stops20h 55mMultiple Airlines
Thu 1/296:00 amOPO - LAX
2 stops36h 32mMultiple Airlines
Deal found 12/15$683
This KLM deal was found by Cheapflights users on 12/15. 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 12/291:45 pmLAX - OPO
1 stop20h 55mKLM
Thu 1/2911:15 amOPO - LAX
1 stop32h 30mKLM
Deal found 12/15$684
This FlightHub deal was found by Cheapflights users on 12/15. 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.
Mon 12/293:00 pmLAX - OPO
1 stop23h 25mLufthansa
Thu 1/296:00 amOPO - LAX
2 stops23h 10mLufthansa
Deal found 12/15$692
This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:17 amSNA - OPO
2 stops38h 23mIberia
Thu 1/298:40 pmOPO - SNA
2 stops32h 15mIberia
Deal found 12/15$908
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Sun 12/287:55 pmLAX - OPO
1 stop27h 40mMultiple Airlines
Thu 1/296:20 amOPO - LAX
2 stops23h 43mMultiple Airlines
Deal found 12/15$970
This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:50 amONT - OPO
2 stops36h 50mIberia
Thu 1/298:40 pmOPO - ONT
2 stops34h 08mIberia
Deal found 12/15$999
This Mytrip deal was found by Cheapflights users on 12/16. 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.
Sun 12/287:10 pmLAX - OPO
3 stops29h 00mMultiple Airlines
Sat 1/176:20 amOPO - LAX
3 stops38h 13mMultiple Airlines
Deal found 12/16$1,006
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/257:55 pmSFO - OPO
1 stop18h 45mMultiple Airlines
Sun 12/286:15 amOPO - SFO
1 stop21h 55mMultiple Airlines
Deal found 12/17$1,390
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/249:40 pmSFO - OPO
2 stops26h 30mMultiple Airlines
Sun 12/286:15 amOPO - SFO
1 stop21h 55mMultiple Airlines
Deal found 12/17$1,510
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Sat 12/277:55 pmSFO - OPO
1 stop19h 00mMultiple Airlines
Mon 12/296:55 amOPO - SFO
1 stop15h 40mMultiple Airlines
Deal found 12/17$1,532
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/265:20 pmSFO - OPO
1 stop18h 15mMultiple Airlines
Sun 12/287:50 amOPO - SFO
1 stop20h 20mMultiple Airlines
Deal found 12/17$1,558
This Mytrip deal was found by Cheapflights users on 12/17. 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 12/172:40 pmSFO - OPO
3 stops23h 50mMultiple Airlines
Sun 12/215:00 pmOPO - SFO
2 stops29h 35mMultiple Airlines
Deal found 12/17$1,564

Find flight deals from California to Porto

Keep the following information in mind while searching for California to Porto flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$458
(Kiwi.com)

One-way from

$261
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,160
Provider with most accurate pricing for Los Angeles-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Porto flights.
Search Deals
From California to Porto
Search Deals
One-way flight from California to Porto
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Tue 3/10

7:31 am-9:30 am

2 stops18h 59m

Porto

Tue 3/17

12:30 pm-10:19 am

2 stops28h 49m

$478

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Fri 3/6

9:32 am-10:30 am

2 stops16h 58m

Porto

Sun 3/15

4:10 pm-12:45 pm

1 stop27h 35m

$484

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

3:00 pm-10:30 am

1 stop36h 30m

Porto

Fri 3/20

4:10 pm-1:05 pm

1 stop27h 55m

$484

Santa AnaPorto

SNA - OPO

SNAOPO

Santa Ana J. Wayne/Orange Cnty

Sun 1/18

8:30 am-10:30 am

2 stops42h 00m

Porto

Sat 1/31

5:00 am-6:17 pm

2 stops21h 17m

$486

Santa AnaPorto

SNA - OPO

SNAOPO

Santa Ana J. Wayne/Orange Cnty

Fri 1/16

3:41 pm-10:25 pm

2 stops22h 44m

Porto

Sat 1/24

6:00 am-8:42 pm

2 stops46h 42m

$491

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 3/18

12:55 am-9:30 am

2 stops25h 35m

Porto

Tue 3/24

6:00 am-10:59 pm

2 stops23h 59m

$491

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sat 2/21

6:00 am-9:30 am

2 stops19h 30m

Porto

Wed 3/18

6:00 am-10:25 pm

2 stops23h 25m

$491

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sat 2/21

6:00 am-9:30 am

2 stops19h 30m

Porto

Tue 3/17

12:30 pm-12:18 pm

2 stops30h 48m

$491

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Fri 1/30

7:55 am-10:30 am

2 stops18h 35m

Porto

Fri 2/6

5:00 am-3:25 pm

2 stops18h 25m

$493

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 2/23

6:00 am-10:30 am

2 stops20h 30m

Porto

Wed 3/18

5:00 am-11:35 am

2 stops37h 35m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 $403). 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 December 18, 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 Monday afternoons 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 16h 58m. The distance from California to Porto is about 5588 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 LEVEL ($300), Iberia ($317), and TAP AIR PORTUGAL ($345).

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

    The most popular route from California to Porto is Los Angeles - Porto. You may also consider San Francisco - Porto or Ontario - 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 $403). 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
Vila Nova de Gaia

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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$388Average$688FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$476Average$877FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$527Average$781FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$533Average$806FlexibilityNo cancel feeOn-time70%
IberiaCheapest$540Average$1,016FlexibilityNo cancel feeOn-time77%
SWISSCheapest$567Average$923FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$574Average$1,171FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$574Average$892FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$593Average$1,097FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$611Average$986FlexibilityNo cancel feeOn-time76%

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