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$288+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
4月 5 — 4月 121
週六 4/5
週六 4/12
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 3月 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$611
(Gotogate)

One-way from

$288
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$879
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
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($169 potential increase over avg. RT price).
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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 March 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 3月 31, 2025.

This Gurufare deal was found by Cheapflights users on 3/31. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週六 11/84:40 pmSFO - OPO
1 stop34h 35mScandinavian Airlines
週五 11/145:55 pmOPO - SFO
1 stop28h 40mScandinavian Airlines
Deal found 3/31$599
This Mytrip deal was found by Cheapflights users on 3/31. 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.
週二 4/19:50 amSFO - OPO
2 stops28h 10mMultiple Airlines
週二 4/87:35 amOPO - SFO
2 stops22h 10mMultiple Airlines
Deal found 3/31$623
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
週一 4/72:30 pmLAX - OPO
2 stops17h 45mMultiple Airlines
週四 5/88:50 amOPO - LAX
1 stop38h 25mMultiple Airlines
Deal found 3/30$627
This SWISS deal was found by Cheapflights users on 3/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週二 10/285:15 pmSAN - OPO
2 stops35h 00mSWISS
週二 11/117:30 pmOPO - SAN
2 stops33h 45mSWISS
Deal found 3/30$652
This FlightHub deal was found by Cheapflights users on 3/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週二 10/2811:50 amSAN - OPO
2 stops40h 25mMultiple Airlines
週二 11/111:45 pmOPO - SAN
1 stop33h 40mMultiple Airlines
Deal found 3/30$656
This Delta deal was found by Cheapflights users on 3/30. 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.
週二 10/289:57 amLAX - OPO
2 stops17h 53mDelta
週三 11/55:00 amOPO - LAX
2 stops18h 24mDelta
Deal found 3/30$656
This Expedia deal was found by Cheapflights users on 3/30. 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.
週四 11/61:45 pmLAX - OPO
2 stops19h 20mScandinavian Airlines
週五 11/145:55 pmOPO - LAX
1 stop31h 05mScandinavian Airlines
Deal found 3/30$658
This SWISS deal was found by Cheapflights users on 3/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週一 10/278:10 pmLAX - OPO
2 stops34h 15mSWISS
週一 11/37:30 pmOPO - LAX
1 stop29h 00mSWISS
Deal found 3/30$668
This United deal was found by Cheapflights users on 3/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週二 10/2812:50 pmSAN - OPO
3 stops43h 25mUnited Airlines
週二 11/116:00 amOPO - SAN
2 stops23h 47mUnited Airlines
Deal found 3/30$673
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週四 11/612:30 pmLAX - OPO
2 stops19h 30mAmerican Airlines
週五 11/1412:25 pmOPO - LAX
2 stops19h 33mAmerican Airlines
Deal found 3/30$695
This Iberia deal was found by Cheapflights users on 3/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週四 11/63:05 pmONT - OPO
2 stops16h 55mIberia
週五 11/1412:25 pmOPO - ONT
2 stops19h 20mIberia
Deal found 3/30$695
This Mytrip deal was found by Cheapflights users on 3/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
週五 9/194:40 pmLAX - OPO
1 stop33h 20mTAP AIR PORTUGAL
週一 10/610:35 pmOPO - LAX
1 stop24h 05mTAP AIR PORTUGAL
Deal found 3/29$719

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 3月 31, 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 FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

週六 4/19

7:40 pm-11:10 am

1 stop31h 30m

Porto

週五 5/2

5:55 pm-4:30 pm

1 stop30h 35m

$611

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

週日 4/27

7:45 pm-11:10 pm

1 stop19h 25m

Porto

週二 5/13

10:20 pm-2:10 pm

1 stop23h 50m

$637

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

週六 9/20

7:30 pm-11:10 am

1 stop31h 40m

Porto

週三 10/8

11:50 am-4:20 pm

1 stop36h 30m

$669

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

週五 9/19

4:40 pm-10:00 am

1 stop33h 20m

Porto

週一 10/6

10:35 pm-2:40 pm

1 stop24h 05m

$719

San DiegoPorto

SAN - OPO

SANOPO

San Diego

週三 9/24

4:40 pm-10:25 am

1 stop33h 45m

Porto

週四 10/2

8:15 am-7:53 pm

2 stops43h 38m

$743

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

週六 4/26

7:20 pm-5:00 pm

1 stop13h 40m

Porto

週四 5/1

10:00 pm-4:50 pm

2 stops26h 50m

$778

San DiegoPorto

SAN - OPO

SANOPO

San Diego

週三 5/14

4:00 pm-6:30 pm

2 stops18h 30m

Porto

週三 5/21

6:15 am-3:25 pm

1 stop17h 10m

$781

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

週三 4/23

7:30 pm-6:30 pm

1 stop15h 00m

Porto

週三 4/30

8:40 am-4:10 pm

1 stop15h 30m

$790

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

週一 4/28

11:15 pm-9:45 am

1 stop26h 30m

Porto

週三 5/14

12:35 pm-10:37 pm

1 stop18h 02m

$795

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

週日 8/10

12:08 am-9:35 am

3 stops25h 27m

Porto

週五 8/22

9:00 am-6:35 pm

1 stop17h 35m

$800

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

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 $1,084). 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 3月 31, 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.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 3月 31, 2025.
To help decide which airline to fly from California to Porto, see what other customers have to say about Delta, KLM and Air Transat. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

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
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

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 Transat
7.8
Good
381 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

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
770 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

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
1,570 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

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 Vueling ($302), TAP AIR PORTUGAL ($313), and Iberia ($340).

  • 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 $1,084). 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 California?

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

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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 3月 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$375Average$937FlexibilityNo cancel feeOn-timeN/A
LEVELCheapest$433Average$593FlexibilityNo cancel feeOn-timeN/A
VuelingCheapest$504Average$879FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$547Average$1,119FlexibilityNo cancel feeOn-time76%
IberiaCheapest$556Average$1,083FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$624Average$782FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$653Average$776FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$663Average$963FlexibilityNo cancel feeOn-time71%
SWISSCheapest$674Average$1,008FlexibilityNo cancel feeOn-time79%
KLMCheapest$682Average$1,018FlexibilityNo cancel feeOn-time75%
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