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$263+ Cheap flights from Porto (OPO) to California

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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — LAX
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheap flight deals from Porto to California

Keep the following information in mind while searching for Porto to California flight deals. Data was last updated julio 30, 2025.

Round-trip from

$481
(Booking.com)

One-way from

$263
(Connections by easyJet)

Popular in

August

Cheapest in

February

Average price

$925
From Porto to California
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One-way flight from Porto to California
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Highest demand for flights based on searches. 6% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Porto to California

Cheapest flights from Porto to California
Explore the most affordable flight options available from Porto to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/105:35 pmOPO - LAX
1 stop31h 25mScandinavian Airlines
mié. 11/197:30 pmLAX - OPO
1 stop37h 25mScandinavian Airlines
Deal found 7/29$481
This Connections by easyJet 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/197:45 pmOPO - LAX
1 stop25h 20mMultiple Airlines
dom. 10/54:30 pmLAX - OPO
1 stop35h 10mMultiple Airlines
Deal found 7/30$521
This lol.travel 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/810:35 pmOPO - SFO
2 stops26h 10mTAP AIR PORTUGAL
lun. 9/224:20 pmSFO - OPO
1 stop18h 40mTAP AIR PORTUGAL
Deal found 7/30$595
This Rumbo 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/221:30 pmOPO - LAS
1 stop29h 45mAir Transat
mié. 10/812:20 pmLAS - OPO
1 stop15h 35mAir Transat
Deal found 7/30$647
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/224:45 pmOPO - SFO
2 stops28h 50mMultiple Airlines
lun. 9/294:20 pmSFO - OPO
2 stops22h 35mMultiple Airlines
Deal found 7/30$647
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/412:15 pmOPO - SFO
1 stop35h 55mSWISS
dom. 9/77:30 pmSFO - OPO
1 stop28h 25mSWISS
Deal found 7/30$689
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/86:30 amOPO - SFO
2 stops23h 19mDelta
lun. 9/228:55 amSFO - OPO
2 stops22h 35mDelta
Deal found 7/30$700
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/266:50 pmOPO - SFO
1 stop24h 55mKLM
lun. 9/223:05 pmSFO - OPO
1 stop16h 25mKLM
Deal found 7/30$702
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/1412:20 pmOPO - SFO
2 stops19h 55mAmerican Airlines
mar. 9/235:45 pmSFO - OPO
1 stop14h 10mAmerican Airlines
Deal found 7/30$720
This Scandinavian Airlines deal was found by Cheapflights users on 7/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/215:45 pmOPO - SFO
2 stops36h 26mScandinavian Airlines
dom. 11/304:40 pmSFO - OPO
1 stop16h 05mScandinavian Airlines
Deal found 7/28$723
This KLM deal was found by Cheapflights users on 7/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/2311:25 amOPO - SFO
2 stops18h 48mAir France
sáb. 11/293:50 pmSFO - OPO
1 stop34h 40mAir France
Deal found 7/28$724
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/268:40 pmOPO - SFO
2 stops29h 30mBritish Airways
lun. 9/223:59 pmSFO - OPO
2 stops19h 51mBritish Airways
Deal found 7/30$728

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to California 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 julio 30, 2025.
Use the filters below to find and compare flights from Porto to California that are best for you.

Fly from

Porto

Fly to

California

Route

Depart

Return

Price

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

lun. 11/10

5:35 pm-5:00 pm

1 stop31h 25m

Los Angeles

mié. 11/19

7:30 pm-4:55 pm

1 stop37h 25m

$481

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

vie. 9/19

7:45 pm-1:05 pm

1 stop25h 20m

Los Angeles

dom. 10/5

4:30 pm-11:40 am

1 stop35h 10m

$521

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

lun. 9/8

10:35 pm-4:45 pm

2 stops26h 10m

San Francisco

lun. 9/22

4:20 pm-7:00 pm

1 stop18h 40m

$595

PortoLas Vegas

OPO - LAS

OPOLAS

Porto

lun. 9/22

1:30 pm-11:15 am

1 stop29h 45m

Las Vegas Harry Reid Intl

mié. 10/8

12:20 pm-11:55 am

1 stop15h 35m

$647

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

lun. 9/22

4:45 pm-1:35 pm

2 stops28h 50m

San Francisco

lun. 9/29

4:20 pm-10:55 pm

2 stops22h 35m

$647

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

jue. 9/4

12:15 pm-4:10 pm

1 stop35h 55m

San Francisco

dom. 9/7

7:30 pm-7:55 am

1 stop28h 25m

$689

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

lun. 9/8

6:30 am-9:49 pm

2 stops23h 19m

San Francisco

lun. 9/22

8:55 am-3:30 pm

2 stops22h 35m

$700

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

mar. 8/26

6:50 pm-11:45 am

1 stop24h 55m

San Francisco

lun. 9/22

3:05 pm-3:30 pm

1 stop16h 25m

$702

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

dom. 9/14

12:20 pm-12:15 am

2 stops19h 55m

San Francisco

mar. 9/23

5:45 pm-3:55 pm

1 stop14h 10m

$720

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

vie. 11/21

5:45 pm-10:11 pm

2 stops36h 26m

San Francisco

dom. 11/30

4:40 pm-4:45 pm

1 stop16h 05m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 44 results
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Best time to book a flight from Porto to California

Have a flexible travel schedule? Discover the best time to fly to California from Porto 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 Porto to California

What is the cheapest month to book a flight from Porto to California?

Currently, January is the cheapest month in which you can book a flight from Porto to California (average of $246). Flying from Porto to California in March is currently the most expensive (average of $326). 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.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. 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 California. Reviews last updated julio 30, 2025.
Read reviews from past customers who have flown Delta, KLM, and Air Transat from Porto to California. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Transat
7.7
Good
424 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Porto to California. 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 from for flights from Porto to California?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly out of when you book flights from Porto to California.

  • What are the cheapest airlines to fly from Porto to California one-way?

    $384 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on LEVEL and TAP AIR PORTUGAL, with prices starting from $457 and $465, respectively.

  • What are the most popular routes from Porto to California?

    The most popular route from Porto to California is Porto - Los Angeles. You may also consider Porto - Las Vegas Harry Reid Intl or Porto - San Francisco.

  • Can I find deals for flights from Porto to California that include hotel bookings?

    Yes. In addition to deals on Porto to California flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to California.

  • Can I find deals for business class flights from Porto to California?

    Yes. Cheapflights offers flight deals from Porto to California 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 Porto to California?

    Currently, January is the cheapest month in which you can book a flight from Porto to California (average of $246). Flying from Porto to California in March is currently the most expensive (average of $326). 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

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Alternative routes for Porto to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Porto to California

Discover the top 2 airlines that operate flights from Porto to California. 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$657Average$873FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$665Average$882FlexibilityNo cancel feeOn-time76%

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