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$226+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
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 August 1, 2025.

Round-trip from

$467
(Kiwi.com)

One-way from

$226
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$999
From California to Porto
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One-way flight from California to Porto
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 10/54:30 pmLAX - OPO
1 stop32h 45mMultiple Airlines
Sat 10/189:50 pmOPO - LAX
1 stop24h 20mMultiple Airlines
Deal found 7/30$467
This Scandinavian Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/297:30 pmLAX - OPO
1 stop31h 30mScandinavian Airlines
Fri 10/175:55 pmOPO - LAX
1 stop30h 25mScandinavian Airlines
Deal found 7/31$508
This Mytrip deal was found by Cheapflights users on 7/31. 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 9/228:40 amSFO - OPO
2 stops22h 25mMultiple Airlines
Mon 10/67:25 pmOPO - SFO
2 stops25h 15mMultiple Airlines
Deal found 7/31$545
This oojo deal was found by Cheapflights users on 7/31. 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.
Tue 10/74:20 pmSFO - OPO
1 stop20h 05mTAP AIR PORTUGAL
Tue 10/214:00 pmOPO - SFO
1 stop30h 35mTAP AIR PORTUGAL
Deal found 7/31$574
This oojo deal was found by Cheapflights users on 8/1. 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.
Tue 10/285:45 pmLAX - OPO
1 stop18h 10mTAP AIR PORTUGAL
Wed 11/58:00 pmOPO - LAX
1 stop27h 00mTAP AIR PORTUGAL
Deal found 8/1$576
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 11/1112:41 pmSNA - OPO
1 stop12h 49mUnited Airlines
Fri 11/216:00 amOPO - SNA
2 stops22h 42mUnited Airlines
Deal found 7/31$589
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 10/281:15 pmLAX - OPO
1 stop13h 15mUnited Airlines
Wed 11/56:00 amOPO - LAX
2 stops22h 35mUnited Airlines
Deal found 7/31$589
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 11/129:06 amBUR - OPO
2 stops16h 24mUnited Airlines
Wed 11/196:00 amOPO - BUR
2 stops22h 51mUnited Airlines
Deal found 7/31$594
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Wed 11/266:45 amSMF - OPO
2 stops18h 45mUnited Airlines
Wed 2/186:00 amOPO - SMF
2 stops21h 26mUnited Airlines
Deal found 7/30$594
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 10/287:00 amONT - OPO
2 stops19h 30mUnited Airlines
Wed 11/56:00 amOPO - ONT
2 stops22h 44mUnited Airlines
Deal found 7/31$594
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 11/111:10 pmSFO - OPO
2 stops27h 20mUnited Airlines
Fri 11/1412:35 pmOPO - SFO
1 stop16h 48mUnited Airlines
Deal found 7/30$597
This Iberia deal was found by Cheapflights users on 7/31. 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.
Sun 11/97:50 pmLAX - OPO
1 stop17h 25mIberia
Wed 11/199:55 pmOPO - LAX
1 stop29h 15mIberia
Deal found 7/31$599

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 August 1, 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

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 10/5

4:30 pm-9:15 am

1 stop32h 45m

Porto

Sat 10/18

9:50 pm-2:10 pm

1 stop24h 20m

$467

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 9/29

7:30 pm-11:00 am

1 stop31h 30m

Porto

Fri 10/17

5:55 pm-4:20 pm

1 stop30h 25m

$507

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 9/22

8:40 am-3:05 pm

2 stops22h 25m

Porto

Mon 10/6

7:25 pm-12:40 pm

2 stops25h 15m

$545

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 10/7

4:20 pm-8:25 pm

1 stop20h 05m

Porto

Tue 10/21

4:00 pm-2:35 pm

1 stop30h 35m

$574

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 10/28

5:45 pm-6:55 pm

1 stop18h 10m

Porto

Wed 11/5

8:00 pm-3:00 pm

1 stop27h 00m

$576

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 1/6

7:50 pm-9:15 pm

1 stop17h 25m

Porto

Thu 1/15

8:45 am-7:10 pm

1 stop18h 25m

$585

Santa AnaPorto

SNA - OPO

SNAOPO

Santa Ana J. Wayne/Orange Cnty

Tue 11/11

12:41 pm-9:30 am

1 stop12h 49m

Porto

Fri 11/21

6:00 am-8:42 pm

2 stops22h 42m

$589

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 10/28

1:15 pm-9:30 am

1 stop13h 15m

Porto

Wed 11/5

6:00 am-8:35 pm

2 stops22h 35m

$589

BurbankPorto

BUR - OPO

BUROPO

Burbank Bob Hope

Wed 11/12

9:06 am-9:30 am

2 stops16h 24m

Porto

Wed 11/19

6:00 am-8:51 pm

2 stops22h 51m

$594

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Wed 11/26

6:45 am-9:30 am

2 stops18h 45m

Porto

Wed 2/18

6:00 am-7:26 pm

2 stops21h 26m

$594

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, January is the cheapest month in which you can book a flight from California to Porto (average of $523). Flying from California to Porto in June is currently the most expensive (average of $1,033). 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 August 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Porto as you normally would.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated August 1, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Austrian Airlines from California to Porto to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 Iberia ($307), LEVEL ($315), and Air Canada ($392).

  • 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, January is the cheapest month in which you can book a flight from California to Porto (average of $523). Flying from California to Porto in June is currently the most expensive (average of $1,033). 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
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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$402Average$609FlexibilityNo cancel feeOn-timeN/A
VuelingCheapest$535Average$895FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$547Average$1,139FlexibilityNo cancel feeOn-time76%
DeltaCheapest$553Average$934FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$556Average$1,060FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$570Average$914FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$574Average$1,080FlexibilityNo cancel feeOn-time71%
SWISSCheapest$591Average$951FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$615Average$1,125FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$624Average$782FlexibilityNo cancel feeOn-time77%

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