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$284+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — OPO
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$713
(Mytrip)

One-way from

$284
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,102
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. 12% potential increase in price ($140 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:40 amSAN - OPO
2 stops20h 05mIberia
Tue 11/118:40 pmOPO - SAN
2 stops31h 27mIberia
Deal found 4/29$577
This KLM deal was found by Cheapflights users on 4/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:50 amSAN - OPO
2 stops19h 00mKLM
Tue 11/115:00 amOPO - SAN
1 stop15h 05mKLM
Deal found 4/29$649
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Mon 5/127:45 pmLAX - OPO
2 stops28h 15mMultiple Airlines
Tue 5/2710:00 pmOPO - LAX
2 stops27h 30mMultiple Airlines
Deal found 4/29$713
This Air Canada deal was found by Cheapflights users on 4/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/284:05 pmSMF - OPO
2 stops33h 30mAir Canada
Tue 10/76:00 amOPO - SMF
2 stops23h 44mAir Canada
Deal found 4/30$734
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:00 amONT - OPO
2 stops19h 30mUnited Airlines
Sat 11/86:00 amOPO - ONT
2 stops22h 17mUnited Airlines
Deal found 4/29$746
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:54 pmSAN - OPO
2 stops17h 01mAmerican Airlines
Wed 10/112:20 pmOPO - SAN
2 stops19h 12mAmerican Airlines
Deal found 4/29$755
This British Airways deal was found by Cheapflights users on 4/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/52:34 pmONT - OPO
2 stops17h 21mBritish Airways
Wed 8/2712:20 pmOPO - ONT
2 stops18h 28mBritish Airways
Deal found 4/30$755
This Gotogate deal was found by Cheapflights users on 4/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/34:40 pmLAX - OPO
1 stop18h 20mTAP AIR PORTUGAL
Mon 6/94:00 pmOPO - LAX
1 stop30h 40mTAP AIR PORTUGAL
Deal found 4/30$760
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/205:50 pmLAX - OPO
1 stop14h 05mIberia
Sun 8/318:15 amOPO - LAX
1 stop15h 50mIberia
Deal found 4/29$762
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2012:49 pmLAX - OPO
2 stops19h 06mAmerican Airlines
Sat 8/3012:20 pmOPO - LAX
2 stops19h 36mAmerican Airlines
Deal found 4/29$777
This United Airlines deal was found by Cheapflights users on 4/28. 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 7/308:05 amLAX - OPO
1 stop17h 15mUnited Airlines
Tue 9/3012:50 pmOPO - LAX
1 stop14h 50mUnited Airlines
Deal found 4/28$787
This FlightHub deal was found by Cheapflights users on 4/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2310:30 pmSAN - OPO
2 stops26h 50mMultiple Airlines
Wed 10/16:15 amOPO - SAN
1 stop17h 10mMultiple Airlines
Deal found 4/29$799

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 May 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

Mon 5/12

7:45 pm-8:00 am

2 stops28h 15m

Porto

Tue 5/27

10:00 pm-5:30 pm

2 stops27h 30m

$713

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Sun 9/28

4:05 pm-9:35 am

2 stops33h 30m

Porto

Tue 10/7

6:00 am-9:44 pm

2 stops23h 44m

$734

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/23

2:54 pm-3:55 pm

2 stops17h 01m

Porto

Wed 10/1

12:20 pm-11:32 pm

2 stops19h 12m

$755

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 8/5

2:34 pm-3:55 pm

2 stops17h 21m

Porto

Wed 8/27

12:20 pm-10:48 pm

2 stops18h 28m

$755

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 6/3

4:40 pm-7:00 pm

1 stop18h 20m

Porto

Mon 6/9

4:00 pm-2:40 pm

1 stop30h 40m

$760

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 8/20

5:50 pm-3:55 pm

1 stop14h 05m

Porto

Sun 8/31

8:15 am-4:05 pm

1 stop15h 50m

$762

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 8/20

1:48 pm-3:55 pm

2 stops18h 07m

Porto

Sun 8/31

12:20 pm-11:56 pm

2 stops19h 36m

$777

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 7/30

8:05 am-9:20 am

1 stop17h 15m

Porto

Tue 9/30

12:50 pm-7:40 pm

1 stop14h 50m

$787

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/23

10:30 pm-9:20 am

2 stops26h 50m

Porto

Wed 10/1

6:15 am-3:25 pm

1 stop17h 10m

$799

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 9/1

7:55 pm-3:50 pm

1 stop35h 55m

Porto

Tue 10/14

4:50 pm-6:00 pm

1 stop33h 10m

$813

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $1,071). 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 May 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.

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 May 1, 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
7,934 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
385 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
781 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

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 TAP AIR PORTUGAL ($323), Iberia ($402), and Scandinavian Airlines ($417).

  • 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 $1,071). 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$375Average$928FlexibilityNo cancel feeOn-timeN/A
LEVELCheapest$433Average$592FlexibilityNo cancel feeOn-timeN/A
VuelingCheapest$502Average$845FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$547Average$1,126FlexibilityNo cancel feeOn-time76%
IberiaCheapest$556Average$1,073FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$624Average$782FlexibilityNo cancel feeOn-time77%
SWISSCheapest$636Average$990FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$663Average$954FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$681Average$986FlexibilityNo cancel feeOn-time67%
KLMCheapest$682Average$1,014FlexibilityNo cancel feeOn-time75%

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