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Cheap flights from California to Porto from $233

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Porto departing on 4/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from California to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
7:10 pm - 11:15 am
LAX
-
OPO
32h 05m1 stop
SWISS Logo
7:25 pm - 5:35 pm
OPO
-
LAX
29h 10m1 stop
$417SWISS
Tue, Mar 3 - Tue, Mar 10
SWISS Logo
7:10 pm - 6:30 pm
LAX
-
OPO
15h 20m1 stop
SWISS Logo
7:25 pm - 4:35 pm
OPO
-
LAX
29h 10m1 stop
$436SWISS
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
8:35 am - 9:30 am
LAX
-
OPO
16h 55m2 stops
United Airlines Logo
12:35 pm - 1:09 am
OPO
-
LAX
19h 34m2 stops
$437United Airlines
Mon, Mar 2 - Wed, Mar 18
British Airways Logo
6:00 am - 4:40 pm
LAX
-
OPO
26h 40m2 stops
British Airways Logo
8:20 am - 12:07 am
OPO
-
LAX
22h 47m2 stops
$443British Airways
Sun, Mar 1 - Tue, Mar 17
Scandinavian Airlines Logo
5:40 pm - 9:35 am
SFO
-
OPO
32h 55m1 stop
Scandinavian Airlines Logo
5:35 pm - 3:35 pm
OPO
-
SFO
29h 00m1 stop
$444Scandinavian Airlines
Mon, Mar 16 - Mon, Mar 23
United Airlines Logo
12:25 pm - 9:30 am
LAX
-
OPO
13h 05m1 stop
United Airlines Logo
12:35 pm - 9:29 pm
OPO
-
LAX
15h 54m1 stop
$446United Airlines
Tue, Mar 3 - Tue, Mar 10
British Airways Logo
5:30 pm - 5:45 pm
LAX
-
OPO
16h 15m1 stop
British Airways Logo
8:40 pm - 6:40 pm
OPO
-
LAX
29h 00m2 stops
$448British Airways
Tue, Feb 10 - Tue, Mar 17
American Airlines Logo
7:00 am - 7:40 am
LAX
-
OPO
16h 40m2 stops
American Airlines Logo
12:25 pm - 12:59 am
OPO
-
LAX
19h 34m2 stops
$451American Airlines
Sun, Mar 1 - Tue, Mar 17
Scandinavian Airlines Logo
5:40 pm - 4:45 pm
SFO
-
OPO
16h 05m1 stop
Scandinavian Airlines Logo
5:35 pm - 3:35 pm
OPO
-
SFO
29h 00m1 stop
$452Scandinavian Airlines
Sun, Mar 15 - Mon, Mar 23
American Airlines Logo
7:10 am - 11:45 am
SAN
-
OPO
20h 35m2 stops
American Airlines Logo
8:40 pm - 8:32 am
OPO
-
SAN
19h 52m2 stops
$461American Airlines
Tue, Jan 27 - Wed, Feb 4

SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets
SWISS
Mar 3
LAX7:10 pmLos Angeles
32h 05m
1 stop
OPO11:15 amPorto
Mar 10
OPO7:25 pmPorto
29h 10m
1 stop
LAX5:35 pmLos Angeles
$417
SWISS
Feb 24
LAX7:10 pmLos Angeles
15h 20m
1 stop
OPO6:30 pmPorto
Mar 3
OPO7:25 pmPorto
29h 10m
1 stop
LAX4:35 pmLos Angeles
$436
SWISS
Mar 3
LAX7:10 pmLos Angeles
32h 05m
1 stop
OPO11:15 amPorto
Mar 10
OPO7:25 pmPorto
29h 10m
1 stop
LAX5:35 pmLos Angeles
$438

Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets
Scandinavian Airlines
Mar 16
SFO5:40 pmSan Francisco
32h 55m
1 stop
OPO9:35 amPorto
Mar 23
OPO5:35 pmPorto
29h 00m
1 stop
SFO3:35 pmSan Francisco
$444
Scandinavian Airlines
Mar 15
SFO5:40 pmSan Francisco
16h 05m
1 stop
OPO4:45 pmPorto
Mar 23
OPO5:35 pmPorto
29h 00m
1 stop
SFO3:35 pmSan Francisco
$452
Scandinavian Airlines
Mar 8
SFO5:40 pmSan Francisco
16h 05m
1 stop
OPO4:45 pmPorto
Mar 16
OPO5:35 pmPorto
29h 00m
1 stop
SFO3:35 pmSan Francisco
$453

momondo 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, momondo users made 832,500 searches. Data last updated January 11, 2026.
Use the filters below to find and compare flights from California to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 3/3

7:10 pm-11:15 am

1 stop32h 05m

Porto

Tue 3/10

7:25 pm-5:35 pm

1 stop29h 10m

$417

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 2/24

7:10 pm-6:30 pm

1 stop15h 20m

Porto

Tue 3/3

7:25 pm-4:35 pm

1 stop29h 10m

$436

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/2

8:35 am-9:30 am

2 stops16h 55m

Porto

Wed 3/18

12:35 pm-1:09 am

2 stops19h 34m

$437

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 3/1

6:00 am-4:40 pm

2 stops26h 40m

Porto

Tue 3/17

8:20 am-12:07 am

2 stops22h 47m

$443

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 3/16

5:40 pm-9:35 am

1 stop32h 55m

Porto

Mon 3/23

5:35 pm-3:35 pm

1 stop29h 00m

$444

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 3/3

12:25 pm-9:30 am

1 stop13h 05m

Porto

Tue 3/10

12:35 pm-9:29 pm

1 stop15h 54m

$446

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 2/10

5:30 pm-5:45 pm

1 stop16h 15m

Porto

Tue 3/17

8:40 pm-6:40 pm

2 stops29h 00m

$448

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 3/1

7:00 am-7:40 am

2 stops16h 40m

Porto

Tue 3/17

12:25 pm-12:59 am

2 stops19h 34m

$451

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 3/15

5:40 pm-4:45 pm

1 stop16h 05m

Porto

Mon 3/23

5:35 pm-3:35 pm

1 stop29h 00m

$452

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 1/27

7:10 am-11:45 am

2 stops20h 35m

Porto

Wed 2/4

8:40 pm-8:32 am

2 stops19h 52m

$461

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from California to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Porto?

The month of January is, on average, the cheapest month to fly to Porto from California, with most prices found around $627. If you aren’t able to travel during the month of January, then book flights to Porto from California during February instead. Flights to Porto in February, while not as cheap as those in January, still average around $666.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $876 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from California for as low as $737 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 21% on your flight if you consider stops on a California to Porto flight.

Cheap California to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from California to Porto

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from California to Porto takes 13h 50m
There are no direct flights from California to Porto. There are no popular flight routes from California to Porto.
Search flight deals

  • When did momondo last update prices for flights from California to Porto Airport?

    Prices for flights from California to Porto Airport refresh daily.

  • How many operators does momondo search for flights from California to Porto Airport?

  • How old do you have to be to fly from California to Porto Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from California to Porto

Compare and see reviews for airlines that fly from California to Porto with momondo
Airline
Rating
Free Cancellation
Price
LEVELPriceFrom $388Free CancellationRating
0.0
Search LEVEL flights
KLMPriceFrom $476Free CancellationRating
7.7
1,436 reviews
Search KLM flights
DeltaPriceFrom $484Free CancellationRating
7.9
8,033 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $499Free CancellationRating
7.3
1,644 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
7,664 reviews
Search British Airways flights
IberiaPriceFrom $545Free CancellationRating
7.0
3,083 reviews
Search Iberia flights
LufthansaPriceFrom $550Free CancellationRating
6.8
7,709 reviews
Search Lufthansa flights
American AirlinesPriceFrom $574Free CancellationRating
7.2
11,111 reviews
Search American Airlines flights
TAP AIR PORTUGALPriceFrom $574Free CancellationRating
7.1
2,116 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,144 reviews
Search United Airlines flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Matosinhos
Aveiro
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Pinhao
Arcos de Valdevez
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from California to Porto?

It is quick and easy to find California to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.

Can I find flights from California to Porto with flexible booking policies on momondo?

momondo does allow users to show only those flights to Porto from California which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from California to Porto?

momondo helps you find the best flight between California and Porto by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from California to Porto right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto from California. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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