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Cheap flights from California to Porto from $350

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 10/13. 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.
TAP AIR PORTUGAL Logo
4:55 pm - 8:25 pm
LAX
-
OPO
19h 30m
1 stop
TAP AIR PORTUGAL Logo
7:00 am - 2:45 pm
OPO
-
LAX
15h 45m
1 stop
$728TAP AIR PORTUGAL
Sat, Sep 26 - Tue, Oct 6
Delta Logo
7:00 am - 9:05 am
SAN
-
OPO
18h 05m
1 stop
Delta Logo
5:00 am - 12:10 pm
OPO
-
SAN
15h 10m
1 stop
$744Delta
Wed, Nov 4 - Tue, Nov 10
United Airlines Logo
6:02 am - 9:30 am
ONT
-
OPO
19h 28m
2 stops
United Airlines Logo
12:35 pm - 11:06 pm
OPO
-
ONT
18h 31m
2 stops
$746United Airlines
Sun, Nov 15 - Wed, Nov 25
United Airlines Logo
7:10 am - 9:30 am
SAN
-
OPO
18h 20m
1 stop
United Airlines Logo
6:00 am - 6:37 pm
OPO
-
SAN
20h 37m
2 stops
$752United Airlines
Wed, Nov 4 - Fri, Nov 13
Multiple Airlines Logo
8:00 am - 10:30 am
SAN
-
OPO
19h 30m
2 stops
Multiple Airlines Logo
9:55 am - 9:52 pm
OPO
-
SAN
19h 57m
2 stops
$757Multiple Airlines
Tue, Oct 27 - Tue, Nov 3
Multiple Airlines Logo
4:35 pm - 7:20 pm
SFO
-
OPO
18h 45m
2 stops
Multiple Airlines Logo
2:40 pm - 2:30 pm
OPO
-
SFO
31h 50m
2 stops
$766Multiple Airlines
Wed, Aug 12 - Wed, Aug 26
Lufthansa Logo
5:30 pm - 11:25 pm
LAX
-
OPO
21h 55m
1 stop
Lufthansa Logo
6:20 am - 3:15 pm
OPO
-
LAX
16h 55m
1 stop
$781Lufthansa
Mon, Sep 21 - Tue, Oct 6
Air Canada Logo
11:35 pm - 7:00 am
LAX
-
OPO
23h 25m
2 stops
Air Canada Logo
6:00 am - 9:35 pm
OPO
-
LAX
23h 35m
2 stops
$796Air Canada
Sun, Sep 27 - Thu, Oct 8
Lufthansa Logo
6:20 pm - 9:30 am
SMF
-
OPO
31h 10m
2 stops
Lufthansa Logo
12:35 pm - 9:31 am
OPO
-
SMF
28h 56m
2 stops
$808Lufthansa
Sun, Nov 1 - Sun, Nov 15
Air Canada Logo
7:30 pm - 7:00 am
SFO
-
OPO
27h 30m
2 stops
Air Canada Logo
11:20 am - 12:07 am
OPO
-
SFO
20h 47m
2 stops
$847Air Canada
Mon, Aug 17 - Wed, Aug 26

Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets
Scandinavian Airlines
Nov 18
LAX7:30 pmLos Angeles
37h 25m
1 stop
OPO4:55 pmPorto
Dec 2
OPO11:55 amPorto
37h 05m
1 stop
LAX5:00 pmLos Angeles
$646
Scandinavian Airlines
Nov 18
SFO4:45 pmSan Francisco
16h 15m
1 stop
OPO5:00 pmPorto
Nov 30
OPO11:55 amPorto
34h 55m
1 stop
SFO2:50 pmSan Francisco
$705
Scandinavian Airlines
Nov 19
SFO4:45 pmSan Francisco
34h 25m
1 stop
OPO11:10 amPorto
Nov 30
OPO11:55 amPorto
34h 55m
1 stop
SFO2:50 pmSan Francisco
$745

TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL deals on California to Porto flight tickets
TAP AIR PORTUGAL
Sep 26
LAX4:55 pmLos Angeles
19h 30m
1 stop
OPO8:25 pmPorto
Oct 6
OPO7:00 amPorto
15h 45m
1 stop
LAX2:45 pmLos Angeles
$728
TAP AIR PORTUGAL
Sep 27
LAX4:40 pmLos Angeles
16h 20m
1 stop
OPO5:00 pmPorto
Oct 8
OPO10:30 pmPorto
24h 05m
1 stop
LAX2:35 pmLos Angeles
$751
TAP AIR PORTUGAL
Sep 25
LAX4:40 pmLos Angeles
16h 10m
1 stop
OPO4:50 pmPorto
Oct 6
OPO7:00 amPorto
15h 45m
1 stop
LAX2:45 pmLos Angeles
$761

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 June 2, 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

Cheapest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 9/26

4:55 pm-8:25 pm

1 stop19h 30m

Porto

Tue 10/6

7:00 am-2:45 pm

1 stop15h 45m

$728
Quickest round-trip

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 11/4

7:00 am-9:05 am

1 stop18h 05m

Porto

Tue 11/10

5:00 am-12:10 pm

1 stop15h 10m

$744

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 11/15

6:02 am-9:30 am

2 stops19h 28m

Porto

Wed 11/25

12:35 pm-11:06 pm

2 stops18h 31m

$746

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 11/4

7:10 am-9:30 am

1 stop18h 20m

Porto

Fri 11/13

6:00 am-6:37 pm

2 stops20h 37m

$752

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

8:00 am-10:30 am

2 stops19h 30m

Porto

Tue 11/3

9:55 am-9:52 pm

2 stops19h 57m

$757

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 8/12

4:35 pm-7:20 pm

2 stops18h 45m

Porto

Wed 8/26

2:40 pm-2:30 pm

2 stops31h 50m

$766

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 9/21

5:30 pm-11:25 pm

1 stop21h 55m

Porto

Tue 10/6

6:20 am-3:15 pm

1 stop16h 55m

$781

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 9/27

11:35 pm-7:00 am

2 stops23h 25m

Porto

Thu 10/8

6:00 am-9:35 pm

2 stops23h 35m

$796

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Sun 11/1

6:20 pm-9:30 am

2 stops31h 10m

Porto

Sun 11/15

12:35 pm-9:31 am

2 stops28h 56m

$808

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 8/17

7:30 pm-7:00 am

2 stops27h 30m

Porto

Wed 8/26

11:20 am-12:07 am

2 stops20h 47m

$847

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 $251. 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 $366.

How far in advance should I book a flight from California 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 $850 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 $724 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 1% 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 09m

Direct flights

None
The fastest flight from California to Porto takes 13h 09m
There are no direct flights from California to Porto. There are no popular flight routes from California to Porto.
Search flight deals

Frequently asked questions about flying from California to Porto

  • 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
KLMPriceFrom $366Free CancellationRating
7.8
1,524 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $431Free CancellationRating
7.2
2,266 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $480Free CancellationRating
7.4
1,804 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,398 reviews
Search Delta flights
LufthansaPriceFrom $544Free CancellationRating
6.8
8,036 reviews
Search Lufthansa flights
IberiaPriceFrom $545Free CancellationRating
7.0
3,222 reviews
Search Iberia flights
United AirlinesPriceFrom $562Free CancellationRating
7.4
9,771 reviews
Search United Airlines flights
American AirlinesPriceFrom $574Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights
SWISSPriceFrom $623Free CancellationRating
7.5
1,964 reviews
Search SWISS flights
Turkish AirlinesPriceFrom $654Free CancellationRating
7.4
4,405 reviews
Search Turkish 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
Aveiro
Matosinhos
Lamego
Chaves
Esposende
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
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

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