$398 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 7/8. 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

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
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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$767
San Francisco
San Francisco1 stop$797
Sacramento
Sacramento2 stops$1,104
Los Angeles
Los Angeles1 stop$767
San Francisco
San Francisco1 stop$797
Sacramento
Sacramento2 stops$1,104

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

Mon, Oct 12 - Fri, Oct 23
LEVEL Logo
8:35 am - 6:55 pm
OPO
-
LAX
18h 20m
1 stop
LEVEL Logo
7:50 pm - 9:20 pm
LAX
-
OPO
17h 30m
1 stop
$767LEVEL
Tue, Sep 1 - Wed, Sep 9
Air Transat Logo
1:30 pm - 8:47 am
OPO
-
LAS
27h 17m
1 stop
Air Transat Logo
12:45 pm - 11:55 am
LAS
-
OPO
15h 10m
1 stop
$785Air Transat
Thu, Oct 15 - Sat, Nov 7
Multiple Airlines Logo
7:15 am - 8:20 am
OPO
-
LAX
33h 05m
2 stops
Multiple Airlines Logo
11:59 pm - 9:05 am
LAX
-
OPO
25h 06m
1 stop
$789Multiple Airlines
Sun, Sep 20 - Sat, Sep 26
Iberia Logo
10:00 pm - 6:55 pm
OPO
-
LAX
28h 55m
1 stop
Iberia Logo
8:55 pm - 4:10 pm
LAX
-
OPO
35h 15m
1 stop
$795Iberia
Sat, Nov 21 - Wed, Nov 25
Scandinavian Airlines Logo
12:00 pm - 2:50 pm
OPO
-
SFO
34h 50m
1 stop
Scandinavian Airlines Logo
4:45 pm - 5:00 pm
SFO
-
OPO
16h 15m
1 stop
$797Scandinavian Airlines
Wed, Sep 16 - Wed, Sep 23
Iberia Logo
10:00 pm - 1:50 pm
OPO
-
SFO
23h 50m
2 stops
Iberia Logo
1:59 pm - 4:00 pm
SFO
-
OPO
18h 01m
2 stops
$807Iberia
Wed, Sep 16 - Wed, Sep 23
SWISS Logo
12:15 pm - 4:15 pm
OPO
-
SFO
36h 00m
1 stop
SWISS Logo
7:35 pm - 6:30 pm
SFO
-
OPO
14h 55m
1 stop
$810SWISS
Thu, Aug 27 - Sun, Sep 6
SWISS Logo
12:15 pm - 4:15 pm
OPO
-
SFO
36h 00m
1 stop
SWISS Logo
7:35 pm - 7:55 am
SFO
-
OPO
28h 20m
1 stop
$813SWISS
Wed, Sep 23 - Wed, Oct 7
Delta Logo
5:00 am - 11:45 am
OPO
-
SFO
14h 45m
1 stop
Delta Logo
11:05 am - 3:25 pm
SFO
-
OPO
20h 20m
2 stops
$814Delta
Mon, Oct 12 - Fri, Oct 23
Multiple Airlines Logo
6:45 am - 6:55 pm
OPO
-
LAX
20h 10m
2 stops
Multiple Airlines Logo
7:50 pm - 9:20 pm
LAX
-
OPO
17h 30m
1 stop
$816Multiple Airlines
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 October.

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 July and June, when the average cost of round-trip tickets is $781 and $740 respectively.

Good to know

Low seasonJanuary
Cheapest flight$398
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Porto to Las Vegas

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 2262 reviews
7.0Boarding
7.8Crew
7.1Comfort
6.2Food
6.3Entertainment
Airline reviews

On both flights, TAP Air Portugal messed up the seating choices that I paid for. They acknowledged that I had purchased seating, that they were errant in ensuring my choices, but told me nothing could be done about it. When I asked to be refunded, I was directed to "talk to someone from Air Portugal" Mon-Friday, and then I was dismissed. No help, no phone number provided to me. I was very annoyed both times and feel cheated.

4.0 OkayDiva, May 2026
LIS - JFK
Read more TAP AIR PORTUGAL reviews

On both flights, TAP Air Portugal messed up the seating choices that I paid for. They acknowledged that I had purchased seating, that they were errant in ensuring my choices, but told me nothing could be done about it. When I asked to be refunded, I was directed to "talk to someone from Air Portugal" Mon-Friday, and then I was dismissed. No help, no phone number provided to me. I was very annoyed both times and feel cheated.

The worst thing was baggage claim. In my return flight I was waiting 90 minutes for my baggage. and when I asked the airport they said it’s the airline. So frustrating after an 8-hour flight.

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

Didn't make announcements during boarding, flight attendant seemed annoyed when I asked for water. Too many hours between flights. Confusing check in at the Lisbon airport.

Chaotic boarding with no announcements. Carry on luggage needs to be checked. Bare minimum zero frill flights. Not a whole lot of anything positive to be said .

It poured rain, our luggage was sitting out in it uncovered on the transport cart while our plane was delayed! Nice business class plane for short flight to Lisbon, but more delay & rain in Lisbon, with terrible Business class seat with no entertainment & cold food on longer flight to London…ALL LUGGAGE AND CLOTHES INSIDE THEM WERE SOAKED THROUGH!!! Could only try with hair dryer to get some drying before quick turn round to train trip.

Delayed at the beginning and the end and almost missed our connection

Menzies group staff not very sympathetic good at breaking up families during the boarding process

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!

The crew was great. There was a big guy sitting next to me who was hanging over my side of the armrest the entire time. Maybe some information about "Be considerate of your neighbors, this is tight space, be kind". The breakfast sandwich was not appealing at all.

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

Perfect airline, super friendly, great service, tasty food. Would fly again.

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.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

My flight was cancelled, but it was not Kayak's fault. Kayak did require me to pay for the ticket twice to two different venders who paid Lufthansa. Kayak/Lufthansa owes me for the first booking I made first was fraudulent on the part of the subcontracting ticket seller. There will be litigation over this issue under the current passenger protection laws.

flight was half full, plenty of empty seats, was able to lie down across 4 seats, food was good, arrived on time

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Our flight was completely cancelled with no options to rebook until 4 days later.

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.

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

Information on your arrival and departure airports