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Cheap flights from California to Porto from $279

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 11/17. 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.
Scandinavian Airlines Logo
7:00 am - 4:55 pmSFO-OPO
25h 55m2 stops
Scandinavian Airlines Logo
10:25 am - 3:35 pmOPO-SFO
36h 10m1 stop
$448Scandinavian Airlines
Find Deal
qui, mar 5 - qua, mar 18
Multiple Airlines Logo
7:10 pm - 11:15 amLAX-OPO
32h 05m1 stop
Multiple Airlines Logo
6:15 am - 3:15 pmOPO-LAX
17h 00m1 stop
$450Multiple Airlines
Find Deal
seg, dez 1 - seg, dez 8
SWISS Logo
7:10 pm - 11:15 amLAX-OPO
32h 05m1 stop
SWISS Logo
7:20 pm - 4:35 pmOPO-LAX
29h 15m1 stop
$462SWISS
Find Deal
seg, dez 1 - seg, dez 8
Lufthansa Logo
5:35 pm - 11:40 pmSAN-OPO
22h 05m1 stop
Lufthansa Logo
6:15 am - 3:45 pmOPO-SAN
17h 30m1 stop
$472Lufthansa
Find Deal
qua, dez 3 - dom, dez 7
Lufthansa Logo
5:45 pm - 11:40 pmSAN-OPO
21h 55m2 stops
Lufthansa Logo
6:15 am - 3:45 pmOPO-SAN
17h 30m1 stop
$476Lufthansa
Find Deal
qua, dez 3 - dom, dez 7
Delta Logo
8:50 am - 10:30 amLAX-OPO
17h 40m2 stops
Delta Logo
11:25 am - 9:35 pmOPO-LAX
18h 10m1 stop
$487Delta
Find Deal
ter, dez 2 - ter, dez 9
Delta Logo
8:55 am - 10:30 amLAX-OPO
17h 35m2 stops
Delta Logo
6:30 am - 10:28 pmOPO-LAX
23h 58m2 stops
$492Delta
Find Deal
seg, dez 1 - seg, dez 8
SWISS Logo
11:04 am - 7:50 amSAN-OPO
36h 46m2 stops
SWISS Logo
7:20 pm - 8:49 pmOPO-SAN
33h 29m2 stops
$496SWISS
Find Deal
qui, fev 12 - seg, fev 23
United Airlines Logo
8:20 am - 11:40 amLAX-OPO
19h 20m2 stops
United Airlines Logo
12:30 pm - 12:29 amOPO-LAX
19h 59m2 stops
$498United Airlines
Find Deal
ter, dez 2 - ter, dez 9
United Airlines Logo
9:19 am - 2:45 pmBUR-OPO
21h 26m2 stops
United Airlines Logo
6:00 am - 9:59 pmOPO-BUR
23h 59m3 stops
$503United Airlines
Find Deal
sex, dez 5 - ter, dez 9

Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets
Scandinavian Airlines
Mar 5
SFO7:00 amSan Francisco
25h 55m
2 stops
OPO4:55 pmPorto
Mar 18
OPO10:25 amPorto
36h 10m
1 stop
SFO3:35 pmSan Francisco
$448
Find similar
Scandinavian Airlines
Mar 5
SFO7:00 amSan Francisco
25h 55m
2 stops
OPO4:55 pmPorto
Mar 16
OPO5:35 pmPorto
29h 00m
1 stop
SFO3:35 pmSan Francisco
$458
Find similar
Scandinavian Airlines
Mar 12
SFO5:40 pmSan Francisco
16h 15m
1 stop
OPO4:55 pmPorto
Mar 18
OPO10:25 amPorto
36h 10m
1 stop
SFO3:35 pmSan Francisco
$460
Find similar

SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets
SWISS
Dec 1
LAX7:10 pmLos Angeles
32h 05m
1 stop
OPO11:15 amPorto
Dec 8
OPO7:20 pmPorto
29h 15m
1 stop
LAX4:35 pmLos Angeles
$462
Find similar
SWISS
Feb 12
SAN11:04 amSan Diego
36h 46m
2 stops
OPO7:50 amPorto
Feb 23
OPO7:20 pmPorto
33h 29m
2 stops
SAN8:49 pmSan Diego
$496
Find similar
SWISS
Nov 30
SFO7:25 pmSan Francisco
31h 50m
1 stop
OPO11:15 amPorto
Dec 8
OPO7:20 pmPorto
29h 10m
1 stop
SFO4:30 pmSan Francisco
$512
Find similar

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 novembro 3, 2025.
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

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

qui 3/5

7:00 am-4:55 pm

2 stops25h 55m

Porto

qua 3/18

10:25 am-3:35 pm

1 stop36h 10m

$448

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

seg 12/1

7:10 pm-11:15 am

1 stop32h 05m

Porto

seg 12/8

6:15 am-3:15 pm

1 stop17h 00m

$450

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

seg 12/1

7:10 pm-11:15 am

1 stop32h 05m

Porto

seg 12/8

7:20 pm-4:35 pm

1 stop29h 15m

$462

San DiegoPorto

SAN - OPO

SANOPO

San Diego

qua 12/3

5:35 pm-11:40 pm

1 stop22h 05m

Porto

dom 12/7

6:15 am-3:45 pm

1 stop17h 30m

$472

San DiegoPorto

SAN - OPO

SANOPO

San Diego

qua 12/3

5:45 pm-11:40 pm

2 stops21h 55m

Porto

dom 12/7

6:15 am-3:45 pm

1 stop17h 30m

$476

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

ter 12/2

8:50 am-10:30 am

2 stops17h 40m

Porto

ter 12/9

11:25 am-9:35 pm

1 stop18h 10m

$487

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

seg 12/1

8:55 am-10:30 am

2 stops17h 35m

Porto

seg 12/8

6:30 am-10:28 pm

2 stops23h 58m

$492

San DiegoPorto

SAN - OPO

SANOPO

San Diego

qui 2/12

11:04 am-7:50 am

2 stops36h 46m

Porto

seg 2/23

7:20 pm-8:49 pm

2 stops33h 29m

$496

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

ter 12/2

8:20 am-11:40 am

2 stops19h 20m

Porto

ter 12/9

12:30 pm-12:29 am

2 stops19h 59m

$498

BurbankPorto

BUR - OPO

BUROPO

Burbank Bob Hope

sex 12/5

9:19 am-2:45 pm

2 stops21h 26m

Porto

ter 12/9

6:00 am-9:59 pm

3 stops23h 59m

$503

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 February is, on average, the cheapest month to fly to Porto from California, with most prices found around $687. If you aren’t able to travel during the month of February, then book flights to Porto from California during October instead. Flights to Porto in October, while not as cheap as those in February, still average around $716.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Wednesday when prices can be found for as low as $942. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,197. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the evening is the cheapest time of day to fly from California to Porto when you can find flight prices for as low as $954. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,172 on average. Flights to Porto from California in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $922 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 $767 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 13% 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

Direct flights

None
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 $402Free CancellationRating
0.0
Search LEVEL flights
Scandinavian AirlinesPriceFrom $527Free CancellationRating
7.4
1,557 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
IberiaPriceFrom $540Free CancellationRating
7.0
3,006 reviews
Search Iberia flights
LufthansaPriceFrom $550Free CancellationRating
6.8
7,547 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $573Free CancellationRating
7.1
2,046 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $574Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SWISSPriceFrom $610Free CancellationRating
7.5
1,776 reviews
Search SWISS flights
United AirlinesPriceFrom $615Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,002 reviews
Search Delta 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
Aveiro
Braga
Matosinhos
Lamego
Esposende
Guimarães
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
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

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1 adult
qua 12/3
qua 12/10
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