$393 Find Cheap Flights from Porto to California - Compare and Save

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 9/11. 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, 0 bags

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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$563
San Francisco
San Francisco2 stops$634
Los Angeles
Los Angeles1 stop$563
San Francisco
San Francisco2 stops$634

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

Thu, Sep 3 - Fri, Sep 18
LEVEL Logo
10:00 pm - 5:55 pm
OPO
-
LAX
27h 55m
1 stop
LEVEL Logo
7:50 pm - 8:00 am
LAX
-
OPO
28h 10m
1 stop
$563LEVEL
Thu, Sep 3 - Fri, Sep 18
LEVEL Logo
10:00 pm - 5:55 pm
OPO
-
LAX
27h 55m
1 stop
LEVEL Logo
7:50 pm - 8:00 am
LAX
-
OPO
28h 10m
1 stop
$564LEVEL
Thu, Sep 3 - Sat, Sep 19
LEVEL Logo
10:00 pm - 5:55 pm
OPO
-
LAX
27h 55m
1 stop
LEVEL Logo
8:55 pm - 1:15 pm
LAX
-
OPO
32h 20m
1 stop
$581LEVEL
Thu, Sep 3 - Fri, Sep 18
LEVEL Logo
10:00 pm - 5:55 pm
OPO
-
LAX
27h 55m
1 stop
LEVEL Logo
7:50 pm - 9:20 pm
LAX
-
OPO
17h 30m
1 stop
$586LEVEL
Tue, Dec 22 - Fri, Jan 1
Multiple Airlines Logo
6:00 am - 9:30 pm
OPO
-
SFO
47h 30m
2 stops
Multiple Airlines Logo
9:40 pm - 11:55 pm
SFO
-
OPO
18h 15m
1 stop
$634Multiple Airlines
Tue, Dec 22 - Fri, Jan 1
Multiple Airlines Logo
6:00 am - 9:30 pm
OPO
-
SFO
47h 30m
2 stops
Multiple Airlines Logo
2:45 pm - 3:20 pm
SFO
-
OPO
16h 35m
1 stop
$635Multiple Airlines
Thu, Sep 17 - Sun, Sep 20
SWISS Logo
8:40 am - 4:15 pm
OPO
-
SFO
15h 35m
1 stop
SWISS Logo
7:35 pm - 6:15 pm
SFO
-
OPO
14h 40m
1 stop
$637SWISS
Thu, Sep 3 - Fri, Sep 18
Lufthansa Logo
6:20 am - 7:00 pm
OPO
-
SFO
20h 40m
1 stop
Lufthansa Logo
9:05 pm - 11:25 pm
SFO
-
OPO
18h 20m
1 stop
$641Lufthansa
Tue, Dec 22 - Fri, Jan 1
Air Canada Logo
6:00 am - 9:30 pm
OPO
-
SFO
47h 30m
2 stops
Air Canada Logo
8:40 am - 3:20 pm
SFO
-
OPO
22h 40m
2 stops
$642Air Canada
Thu, Oct 8 - Wed, Oct 28
Lufthansa Logo
6:00 am - 4:20 pm
OPO
-
LAX
18h 20m
1 stop
Lufthansa Logo
6:30 pm - 11:55 pm
LAX
-
OPO
22h 25m
1 stop
$712Lufthansa
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.

How much is a round-trip flight from Porto to California?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Porto to California departing in September.

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 May, when tickets cost $514 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $833 and $781 respectively.

Good to know

Low seasonJanuary
Cheapest flight$393
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 19% 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.

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.
7.2
TAP AIR PORTUGALOverall score based on 2336 reviews
7.0Boarding
6.3Food
7.1Comfort
6.3Entertainment
7.8Crew
Airline reviews

Excellent! Flight left a bit late but overall a pleasant experience.

10.0 ExcellentDeanna, Jun 2026
LIS - SFO
Read more TAP AIR PORTUGAL reviews

Excellent! Flight left a bit late but overall a pleasant experience.

Business class seats aren't comfortable. Food was not good.

They left our luggage uncovered on tarmac in pouring rain during an hour delay of departure! At our final destination, we found ALL OF OUR CLOTHES/SHOES soaked all the way through!! Our 1st connection plane was a great business class accommodation but only 50 minutes long. Our 2nd connection from Lisbon (another delay with luggage uncovered on tarmac) had only the extra legroom and mediocre food in business class - no entertainment and no extra comfort seating. Will not use TAP Air Portugal again!

Kayak let me choose these flights on TAP but then after 2 months, cancelled my flights because they didn't think 90 minutes was enough time for the connection. I notice that neither flight was actually cancelled. Just my reservation. Why let me go through all of that effort to find the right flights for us, only to cancel it from underneath us 2 months later leaving us scrambling to find an alternative?

Wonderful just hope the had more direct flights to Boston

Boarding process was fast and efficient. Short flight but on time and well organized. I would certainly fly TAP again.

Very borderline, low budget airline without low budget prices There are no counts of soda, everything is dispensed enlarged bottles and poured into tiny cups about 70 mL so in order to keep hydrated you have to take 3-4 cups at a time. Also, there was only one food item offered, pasta, they ran out of chicken right away. Snack was very poor. It was called tuna sandwich, which is truly borderline. The flight attend attendance seemed to be overworked and tired.

Flight from FNC to OBO was cancelled. We were rebooked to Lisbon later in the day. It was inconvenient but it worked out ok in the end.

TAP is a good, decent airline for international journeys. No complaints about the service, the crew, the comfort, or the baggage handling.

I like: The food provided was really good. I really enjoyed it Dislike: I couldn't open my window during the whole trip. Every time I wanted to do it, one of the crew came to me saying "please close it" It was a day flight. I wanted to have my window open and they didn't let me.

Good and they are leaving at time and arriving on time

The flight attendants were wonderful - one man put my carry on in the bin for me. Very attentive service. Loved the blanket and pillow waiting for me in economy. Food was excellent which is a surprise given the reputation of any airline food. Wine was fine with the meals. Delighted with the new movies - flight went by very quickly. I would definitely fly Lufthansa again.

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

Patrick and the whole crew were amazing! Hope to have this team for all my European trips.

Smooth flight with enough time for connection. Ran out of meal options. In-flight and gate staff were friendly and helpful. Good service overall.

They don’t give information on why a flight is delayed in a timely manner. Very frustrating.

The plane (Mitsubishi CRJ) felt old, creaking and not very new. The crew was okay. Hot water provision was broken so hot beverages could't be served.

Flight delays made me miss my connections. I almost missed my connecting flight because I had to get my luggage and go through immigration and then back into the airport. Connecting flight said it would be my problem if I missed it. I had to be rerouted through another city and came in 3 hours later than expected and had to hire an uber to get me home when I had everything planned out

Extremely tight connection in Frankfurt. Tickets with one hour layover are not realistic even with first flight being on time. Just barely made it and ran most of the way. 😬

Short flight. No food, no entertainment. Airport very busy but moved quickly.

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

Information on your arrival and departure airports