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$368+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
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 June 10, 2026.

This Trip.com deal was found by Cheapflights users on 6/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:30 pm
LAX
-
OPO
1 stop31h 35m
Scandinavian Airlines
Sun 11/155:35 pm
OPO
-
LAX
1 stop31h 25m
Scandinavian Airlines
Deal found 6/5$643
This FlightHub deal was found by Cheapflights users on 6/6. 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.
Wed 12/27:30 pm
LAX
-
OPO
1 stop37h 25m
Scandinavian Airlines
Mon 12/711:55 am
OPO
-
LAX
1 stop37h 05m
Scandinavian Airlines
Deal found 6/6$645
This Trip.com deal was found by Cheapflights users on 6/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:30 pm
LAX
-
OPO
1 stop37h 25m
Scandinavian Airlines
Wed 12/2311:55 am
OPO
-
LAX
1 stop37h 05m
Scandinavian Airlines
Deal found 6/6$658
This Iberia deal was found by Cheapflights users on 6/7. 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.
Fri 10/237:50 pm
LAX
-
OPO
1 stop17h 30m
Iberia
Fri 11/208:20 am
OPO
-
LAX
1 stop16h 20m
Iberia
Deal found 6/7$661
This Scandinavian Airlines deal was found by Cheapflights users on 6/7. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:30 pm
LAX
-
OPO
1 stop31h 40m
Scandinavian Airlines
Thu 11/195:50 pm
OPO
-
LAX
1 stop31h 10m
Scandinavian Airlines
Deal found 6/7$668
This FlightHub deal was found by Cheapflights users on 6/6. 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.
Tue 11/177:30 pm
LAX
-
OPO
1 stop37h 30m
Scandinavian Airlines
Mon 11/3011:55 am
OPO
-
LAX
1 stop37h 05m
Scandinavian Airlines
Deal found 6/6$675
This Scandinavian Airlines deal was found by Cheapflights users on 6/7. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:30 pm
LAX
-
OPO
1 stop37h 15m
Scandinavian Airlines
Thu 11/195:50 pm
OPO
-
LAX
1 stop31h 10m
Scandinavian Airlines
Deal found 6/7$698
This FlightHub deal was found by Cheapflights users on 6/6. 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.
Fri 11/137:30 pm
LAX
-
OPO
1 stop37h 15m
Scandinavian Airlines
Sat 11/2112:00 pm
OPO
-
LAX
1 stop37h 00m
Scandinavian Airlines
Deal found 6/6$705
This FlightHub deal was found by Cheapflights users on 6/7. 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 11/27:30 pm
LAX
-
OPO
1 stop31h 35m
Scandinavian Airlines
Wed 11/1811:55 am
OPO
-
LAX
1 stop37h 05m
Scandinavian Airlines
Deal found 6/7$715
This Trip.com deal was found by Cheapflights users on 6/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:30 pm
LAX
-
OPO
1 stop37h 30m
Scandinavian Airlines
Mon 11/3011:55 am
OPO
-
LAX
1 stop37h 05m
Scandinavian Airlines
Deal found 6/6$716
This Gotogate deal was found by Cheapflights users on 6/8. 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.
Tue 11/107:10 pm
LAX
-
OPO
1 stop15h 20m
SWISS
Tue 11/2412:05 pm
OPO
-
LAX
1 stop36h 30m
SWISS
Deal found 6/8$724
This Air France deal was found by Cheapflights users on 6/7. 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.
Mon 10/267:00 am
SAN
-
OPO
2 stops20h 30m
Multiple Airlines
Mon 11/211:15 am
OPO
-
SAN
1 stop32h 55m
Multiple Airlines
Deal found 6/7$736

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 June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$645
(FlightHub)

One-way from

$368
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$1,147
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
Highest demand for flights based on searches. 19% potential increase in price ($202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 10, 2026.
Use the filters below to find and compare flights from California to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BurbankPorto

BUR - OPO

BUROPO

Burbank Bob Hope

Sun 12/6

9:10 am-9:30 am

2 stops16h 20m

Porto

Thu 12/10

6:00 am-8:28 pm

2 stops22h 28m

$746

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 11/18

7:00 am-9:30 am

2 stops18h 30m

Porto

Fri 11/27

12:35 pm-11:06 pm

2 stops18h 31m

$746

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 11/15

7:00 am-9:30 am

2 stops18h 30m

Porto

Thu 12/3

12:35 pm-11:06 pm

2 stops18h 31m

$746

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 11/3

6:02 am-9:30 am

2 stops19h 28m

Porto

Tue 11/17

12:35 pm-11:06 pm

2 stops18h 31m

$746

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 11/18

7:00 am-9:30 am

2 stops18h 30m

Porto

Thu 12/3

12:35 pm-11:06 pm

2 stops18h 31m

$746

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 11/15

10:10 pm-10:30 am

2 stops28h 20m

Porto

Wed 11/18

11:15 am-12:10 pm

1 stop32h 55m

$747

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

3:05 pm-10:30 pm

1 stop24h 25m

Porto

Tue 11/3

5:00 am-12:10 pm

1 stop15h 10m

$747

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Mon 10/12

10:59 pm-3:25 pm

2 stops32h 26m

Porto

Thu 11/19

11:15 am-4:12 pm

2 stops36h 57m

$747

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 11/2

10:10 pm-10:30 am

2 stops28h 20m

Porto

Wed 12/2

11:15 am-12:10 pm

1 stop32h 55m

$748
Quickest round-trip

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

8:00 am-10:30 am

2 stops19h 30m

Porto

Tue 11/3

5:00 am-12:10 pm

1 stop15h 10m

$748

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 60 resultsSorted by cheapest first
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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, January is the cheapest month in which you can book a flight from California to Porto (average of $251). Flying from California to Porto in June is currently the most expensive (average of $747). 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.

How much does it cost to fly round-trip from California to Porto?

How far ahead should I book a flight from California to Porto?

The price you pay for your flight from California to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 80 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 20m. 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 KLM ($245), United Airlines ($258), and American Airlines ($274).

  • 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 San Diego - 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, January is the cheapest month in which you can book a flight from California to Porto (average of $251). Flying from California to Porto in June is currently the most expensive (average of $747). 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
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

Browse thousands of different options on Cheapflights for your next trip

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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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$366Average$1,002FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$431Average$750FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$480Average$612FlexibilityNo cancel feeOn-time77%
DeltaCheapest$495Average$1,023FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$545Average$965FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$550Average$1,108FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$562Average$1,005FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$574Average$1,088FlexibilityNo cancel feeOn-time71%
SWISSCheapest$623Average$913FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$654Average$789FlexibilityNo cancel feeOn-time77%

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