$310 Find Cheap Flights from Porto to California

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Porto to California departing on 1/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to California

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to California, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to California, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Porto to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$530
San Francisco
San Francisco1 stop$614
Sacramento
Sacramento2 stops$1,015
Los Angeles
Los Angeles1 stop$530
San Francisco
San Francisco1 stop$614
Sacramento
Sacramento2 stops$1,015

Book Cheap Porto to California Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to California that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to California

lun., nov. 10 - mer., nov. 26
Scandinavian Airlines Logo
5:35 pm - 5:00 pmOPO-LAX
31h 25m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:55 pmLAX-OPO
37h 25m1 stop
$530Scandinavian Airlines
Find Deal
lun., nov. 17 - mer., déc. 3
Scandinavian Airlines Logo
5:35 pm - 5:00 pmOPO-LAX
31h 25m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:55 pmLAX-OPO
37h 25m1 stop
$539Scandinavian Airlines
Find Deal
jeu., janv. 15 - lun., janv. 26
TAP AIR PORTUGAL Logo
8:00 pm - 4:05 pmOPO-SFO
28h 05m1 stop
TAP AIR PORTUGAL Logo
4:35 pm - 3:00 pmSFO-OPO
14h 25m1 stop
$615TAP AIR PORTUGAL
Find Deal
ven., janv. 16 - sam., janv. 31
TAP AIR PORTUGAL Logo
9:00 am - 4:05 pmOPO-SFO
15h 05m1 stop
TAP AIR PORTUGAL Logo
4:35 pm - 3:00 pmSFO-OPO
14h 25m1 stop
$628TAP AIR PORTUGAL
Find Deal
jeu., nov. 13 - jeu., nov. 27
Multiple Airlines Logo
7:25 am - 10:07 pmOPO-LAS
46h 42m3 stops
Multiple Airlines Logo
8:00 am - 7:00 pmLAS-OPO
27h 00m2 stops
$697Multiple Airlines
Find Deal
jeu., nov. 13 - jeu., nov. 27
Multiple Airlines Logo
1:00 pm - 10:07 pmOPO-LAS
41h 07m3 stops
Multiple Airlines Logo
11:20 am - 7:00 pmLAS-OPO
23h 40m2 stops
$702Multiple Airlines
Find Deal
ven., janv. 16 - sam., janv. 31
KLM Logo
4:10 pm - 11:50 amOPO-SFO
27h 40m1 stop
KLM Logo
10:10 am - 10:30 amSFO-OPO
16h 20m2 stops
$707KLM
Find Deal
ven., janv. 16 - sam., janv. 31
KLM Logo
4:10 pm - 11:50 amOPO-SFO
27h 40m1 stop
KLM Logo
10:10 am - 10:30 amSFO-OPO
16h 20m2 stops
$710KLM
Find Deal
mer., déc. 24 - sam., mars 7
Lufthansa Logo
12:30 pm - 8:10 pmOPO-SFO
15h 40m1 stop
Lufthansa Logo
7:00 am - 9:30 amSFO-OPO
18h 30m1 stop
$720Lufthansa
Find Deal
mer., avr. 1 - dim., avr. 5
Lufthansa Logo
6:00 am - 4:05 pmOPO-SFO
18h 05m1 stop
Lufthansa Logo
9:05 pm - 11:20 pmSFO-OPO
18h 15m1 stop
$745Lufthansa
Find Deal
Booking Insights

KAYAK's insights & trends for Porto to California flights

Get data-powered insights and trends into flights from Porto to California to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Porto to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Porto to California, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Porto to California is February, when tickets cost $678 (return) on average. On the other hand, the most expensive months are October and July, when the average cost of round-trip tickets is $1,310 and $925 respectively.

What’s the cheapest day of the week to fly from Porto to California?

The average price of all round-trip flights from Porto to California clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to California on a Tuesday and more expensive on a Friday. On your return trip to Porto, you should consider flying back on a Wednesday, and avoid Fridays for better deals.

Good to know

Low seasonFebruary
Cheapest flight$310
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Porto to Los Angeles

FAQs - booking California flights

  • How does KAYAK find such low prices on flights from Porto to California?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to California.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to California?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Porto to California is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Porto to California?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Porto to California with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to California?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Porto to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to California?

    The cheapest time of day to fly to California is generally in the evening, when round-trip flights cost $802 on average. Morning departures are around 7% more expensive than evening flights, on average. The most expensive time of day to fly to California is generally in the morning, which is peak travel time and where the average cost of a ticket is $857.

Reviews of the top airlines flying from Porto to California

 
See real verified KAYAK customer reviews for airlines flying from Porto to California. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Porto to California? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
TAP AIR PORTUGALOverall score based on 2009 reviews
7.8Crew
6.2Food
7.0Boarding
6.3Entertainment
7.1Comfort
Airline reviews

The person at the checkin was very helpful. We couldn’t check in through the keyosk, but the agent was very helpful.

10.0 ExcellentAnonymous, Oct 2025LIS - SVQ
Read more TAP AIR PORTUGAL reviews

The person at the checkin was very helpful. We couldn’t check in through the keyosk, but the agent was very helpful.

Great price for really nice seats and the plane and staff were great, only 5-10 minute delays!

Tap was very frustrating in Lisbon. Not enough direction and help. Mixed messages of where we needed to go. Seats were not very comfortable.

Everything went as expected. Luggage arrived at my same destination and nothing disturbed my vacation.

This flight arrived late. We joined well over a thousand of other people waiting to go through customs. Air Portugal has lost my bag. We had to chase down a representative even though we had waited at the baggage claim for well over 1 hour and 35 minutes for baggage to come. No representative was there to explain the delay or to give any direction. After 1 hour and 35 minutes at least four passengers had no baggage to pick up or had a fraction of their baggage. The representative was a young woman who clearly did not have the experience to deal with what was happening. Very disappointing as of course we were dealing with great amount of jet lag and having been up for 24 hours at that point and not being able to have any of the things necessary at home that were contained in the bag was quite upsetting. That instant occurred last night at approximately 11:15 p.m. and as of 12:30 p.m. the next day I have not heard anything from Air Portugal.

Check-in guidance for transfer flight, boarding, in-flight service, seat comfort, etc.

Very rude person at the boarding desk; flight attendant coughing 3 inches from my face three times- not even covering her mouth; boarding process very unacceptable for older people with stairs to all planes (are you all stuck in the 1960’s?). I am sure that I am not remembering all of the negative things, but I am sure you get the message!

Flight was fine. Second meal ( fish sandwich on hard roll) was awful. My suitcase didn’t make the flight. It had been located, but won’t be delivered until tomorrow. Five days after flight

Boarding experience was awful. TAP claims I did not have check in luggage with tickets. I went 3-4 check in agents until I finally found a helpful kind agent who checked in my luggage with no fees. On top of that our flight was over 2 hours delayed with barely an apology or explanation.

The airport temperature at the airport and on the flight was too warm

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything went well. I will fly with Lufthansa again. And use Kayak whenever I book flights

Bought a seat in a flight that got changed out so ended up paying for a seat I would have had if I hadn't paid.

Food was poor quality and the screens for entertainment didn’t work properly

Food was much better than my outbound flight. On-time. Good service. I had a problem with my entertainment screen, but the attendant fixed it promptly.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

United lost my travel information and canceled my original flight. I had a seat assignment but was refused the booking. I had to prove that I went to Germany on United Very concerned about security that no one recorded my passport from Cleveland to NY and NY to Frankfurt I arrived at home at 12:30am on Saturday instead of 8pm I expect a full refund from United Please provide information to assure compensation

I paid for extra legroom which made the long flight very comfortable. Food was very tasty, they fed us 2 meals plus a cookie snack and extra liquids. Checked luggage is expensive.

Lufthansa is turning into a budget airline. On transfers, the luggage never arrives if you have less than 2 hours for the transfer. This is happened to me multiple times when I end up on flights serviced by Lufthansa. The first leg of the flight was serviced by Discover Airlines. It was a 3-hour flight and they only offer a glass of water. Everything else is for purchase. I purchased my ticket as economy which should have included a bag but it ended up booking as economy light so I had to pay for a bag in each direction.

Everything you need to know for your flight from Porto to California

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.