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$280+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 February 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:10 pm
LAX
-
OPO
1 stop32h 00m
SWISS
Mon 3/237:20 pm
OPO
-
LAX
1 stop29h 15m
SWISS
Deal found 2/8$467
This Mytrip deal was found by Cheapflights users on 2/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/168:10 pm
LAX
-
OPO
1 stop15h 25m
SWISS
Mon 3/237:20 pm
OPO
-
LAX
1 stop29h 15m
SWISS
Deal found 2/8$475
This KLM deal was found by Cheapflights users on 2/10. 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.
Tue 3/106:45 pm
LAX
-
OPO
1 stop32h 45m
Multiple Airlines
Tue 3/179:55 am
OPO
-
LAX
1 stop33h 50m
Multiple Airlines
Deal found 2/10$481
This Delta deal was found by Cheapflights users on 2/10. 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.
Tue 3/106:45 pm
LAX
-
OPO
1 stop32h 45m
Delta
Wed 3/185:00 am
OPO
-
LAX
1 stop14h 45m
Delta
Deal found 2/10$484
This KLM deal was found by Cheapflights users on 2/10. 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.
Tue 3/103:00 pm
SAN
-
OPO
1 stop17h 25m
KLM
Tue 3/175:00 am
OPO
-
SAN
1 stop15h 05m
KLM
Deal found 2/10$486
This KAYAK deal was found by Cheapflights users on 2/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:01 am
SAN
-
OPO
2 stops28h 24m
Lufthansa
Wed 4/156:20 am
OPO
-
SAN
1 stop17h 05m
Lufthansa
Deal found 2/8$487
This Delta deal was found by Cheapflights users on 2/10. 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.
Tue 3/103:00 pm
SAN
-
OPO
1 stop17h 25m
Delta
Wed 3/1811:15 am
OPO
-
SAN
1 stop32h 50m
Delta
Deal found 2/10$488
This Delta deal was found by Cheapflights users on 2/10. 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.
Tue 3/107:45 am
LAX
-
OPO
2 stops19h 45m
Delta
Tue 3/175:00 am
OPO
-
LAX
1 stop14h 45m
Delta
Deal found 2/10$490
This Delta deal was found by Cheapflights users on 2/10. 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 4/136:00 pm
LAX
-
OPO
1 stop20h 00m
Delta
Tue 5/56:15 am
OPO
-
LAX
2 stops22h 34m
Delta
Deal found 2/10$496
This KAYAK deal was found by Cheapflights users on 2/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:01 am
SAN
-
OPO
2 stops28h 24m
Lufthansa
Tue 4/216:20 am
OPO
-
SAN
2 stops24h 18m
Lufthansa
Deal found 2/8$497
This Mytrip deal was found by Cheapflights users on 2/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:35 am
LAX
-
OPO
2 stops24h 20m
Multiple Airlines
Mon 3/237:20 pm
OPO
-
LAX
1 stop29h 15m
Multiple Airlines
Deal found 2/8$498
This SWISS deal was found by Cheapflights users on 2/10. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:00 pm
SAN
-
OPO
2 stops19h 30m
SWISS
Tue 3/1712:05 pm
OPO
-
SAN
2 stops41h 35m
SWISS
Deal found 2/10$499

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$467
(Kiwi.com)

One-way from

$280
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$625
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, 1% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 11, 2026.
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

Tue 3/10

3:00 pm-3:25 pm

1 stop17h 25m

Porto

Wed 3/18

11:15 am-1:05 pm

1 stop32h 50m

$488

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 3/12

3:00 pm-10:30 am

1 stop36h 30m

Porto

Wed 3/18

5:00 am-6:50 pm

2 stops20h 50m

$494

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

4:00 pm-6:30 pm

2 stops19h 30m

Porto

Tue 3/17

12:05 pm-10:40 pm

2 stops41h 35m

$499

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

3:00 pm-3:25 pm

1 stop17h 25m

Porto

Thu 3/19

11:20 am-12:11 am

2 stops43h 51m

$500

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 3/11

12:00 pm-3:25 pm

2 stops20h 25m

Porto

Wed 3/18

6:00 am-9:12 pm

2 stops22h 12m

$508

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Sun 3/8

11:59 pm-9:30 am

2 stops26h 31m

Porto

Sun 3/15

6:00 am-10:39 pm

2 stops47h 39m

$513

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 3/11

8:10 pm-11:10 am

1 stop32h 00m

Porto

Mon 3/23

9:10 am-5:35 pm

2 stops39h 25m

$520

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/16

2:45 pm-6:50 pm

1 stop21h 05m

Porto

Wed 4/1

7:10 pm-11:50 am

1 stop24h 40m

$534

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 4/13

4:45 pm-11:00 am

1 stop34h 15m

Porto

Fri 4/17

5:55 pm-2:40 pm

1 stop28h 45m

$541

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 3/15

2:45 pm-10:30 am

1 stop36h 45m

Porto

Tue 3/31

11:30 am-4:09 pm

2 stops36h 39m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

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 $401). Flying from California to Porto in June is currently the most expensive (average of $825). 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.

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 17h 25m. The distance from California to Porto is about 5596 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), LEVEL ($281), and Iberia ($293).

  • 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, May is the cheapest month in which you can book a flight from California to Porto (average of $401). Flying from California to Porto in June is currently the most expensive (average of $825). 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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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 February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$263Average$673FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$366Average$862FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$431Average$804FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$451Average$1,016FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$480Average$612FlexibilityNo cancel feeOn-time77%
Air TransatCheapest$487Average$824FlexibilityNo cancel feeOn-time50%
DeltaCheapest$489Average$945FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$533Average$806FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$544Average$912FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$574Average$1,131FlexibilityNo cancel feeOn-time71%

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