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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 2/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Multiple Airlines Logo
7:10 pm - 7:50 amLAX-OPO
28h 40m1 stop
Multiple Airlines Logo
1:45 pm - 3:15 pmOPO-LAX
33h 30m1 stop
$462Multiple Airlines
Find Deal
Thu, Jan 8 - Wed, Jan 21
Multiple Airlines Logo
11:10 am - 12:50 pmSAN-OPO
17h 40m2 stops
Multiple Airlines Logo
6:00 am - 10:37 pmOPO-SAN
24h 37m2 stops
$463Multiple Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 22
KLM Logo
3:25 pm - 10:30 amLAX-OPO
35h 05m1 stop
KLM Logo
11:15 am - 11:45 amOPO-LAX
32h 30m1 stop
$479KLM
Find Deal
Mon, Feb 2 - Wed, Feb 11
SWISS Logo
7:10 pm - 6:30 pmLAX-OPO
15h 20m1 stop
SWISS Logo
12:10 pm - 4:35 pmOPO-LAX
36h 25m1 stop
$481SWISS
Find Deal
Thu, Jan 8 - Wed, Jan 21
KLM Logo
1:45 pm - 7:20 pmLAX-OPO
21h 35m1 stop
KLM Logo
11:15 am - 11:45 amOPO-LAX
32h 30m1 stop
$483KLM
Find Deal
Wed, Feb 11 - Wed, Feb 18
Scandinavian Airlines Logo
1:00 pm - 4:55 pmSFO-OPO
44h 55m2 stops
Scandinavian Airlines Logo
10:25 am - 3:35 pmOPO-SFO
36h 10m1 stop
$485Scandinavian Airlines
Find Deal
Wed, Mar 11 - Wed, Mar 18
Lufthansa Logo
2:15 pm - 11:40 pmLAX-OPO
25h 25m2 stops
Lufthansa Logo
6:00 am - 10:59 pmOPO-LAX
24h 59m2 stops
$486Lufthansa
Find Deal
Wed, Feb 11 - Wed, Feb 18
Lufthansa Logo
11:10 am - 12:50 pmSAN-OPO
17h 40m2 stops
Lufthansa Logo
6:00 am - 9:56 pmOPO-SAN
23h 56m2 stops
$486Lufthansa
Find Deal
Thu, Jan 8 - Thu, Jan 22
SWISS Logo
1:00 pm - 11:10 amSAN-OPO
38h 10m2 stops
SWISS Logo
12:10 pm - 10:33 pmOPO-SAN
42h 23m2 stops
$497SWISS
Find Deal
Wed, Jan 7 - Wed, Jan 21
Scandinavian Airlines Logo
4:40 pm - 4:55 pmSFO-OPO
16h 15m1 stop
Scandinavian Airlines Logo
5:35 pm - 2:35 pmOPO-SFO
29h 00m1 stop
$500Scandinavian Airlines
Find Deal
Thu, Nov 27 - Fri, Dec 12

KLM flights from California to Porto

Our best KLM deals on California to Porto flight tickets
KLM
Feb 2
LAX3:25 pmLos Angeles
35h 05m
1 stop
OPO10:30 amPorto
Feb 11
OPO11:15 amPorto
32h 30m
1 stop
LAX11:45 amLos Angeles
$479
Find similar
KLM
Feb 11
LAX1:45 pmLos Angeles
21h 35m
1 stop
OPO7:20 pmPorto
Feb 18
OPO6:00 amPorto
37h 45m
1 stop
LAX11:45 amLos Angeles
$483
Find similar
KLM
Feb 11
LAX9:30 amLos Angeles
17h 00m
2 stops
OPO10:30 amPorto
Feb 18
OPO11:15 amPorto
32h 30m
1 stop
LAX11:45 amLos Angeles
$488
Find similar

SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets
SWISS
Jan 8
LAX7:10 pmLos Angeles
15h 20m
1 stop
OPO6:30 pmPorto
Jan 21
OPO12:10 pmPorto
36h 25m
1 stop
LAX4:35 pmLos Angeles
$481
Find similar
SWISS
Jan 8
LAX7:00 pmLos Angeles
28h 50m
2 stops
OPO7:50 amPorto
Jan 21
OPO12:10 pmPorto
36h 25m
1 stop
LAX4:35 pmLos Angeles
$489
Find similar
SWISS
Jan 12
LAX7:10 pmLos Angeles
32h 05m
1 stop
OPO11:15 amPorto
Jan 24
OPO11:55 amPorto
36h 40m
1 stop
LAX4:35 pmLos Angeles
$493
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 November 17, 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

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 1/8

7:10 pm-7:50 am

1 stop28h 40m

Porto

Wed 1/21

1:45 pm-3:15 pm

1 stop33h 30m

$462

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 1/8

11:10 am-12:50 pm

2 stops17h 40m

Porto

Thu 1/22

6:00 am-10:37 pm

2 stops24h 37m

$463

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 2/2

3:25 pm-10:30 am

1 stop35h 05m

Porto

Wed 2/11

11:15 am-11:45 am

1 stop32h 30m

$479

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 1/8

7:10 pm-6:30 pm

1 stop15h 20m

Porto

Wed 1/21

12:10 pm-4:35 pm

1 stop36h 25m

$481

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 2/11

1:45 pm-7:20 pm

1 stop21h 35m

Porto

Wed 2/18

11:15 am-11:45 am

1 stop32h 30m

$483

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 3/11

1:00 pm-4:55 pm

2 stops44h 55m

Porto

Wed 3/18

10:25 am-3:35 pm

1 stop36h 10m

$485

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 2/11

2:15 pm-11:40 pm

2 stops25h 25m

Porto

Wed 2/18

6:00 am-10:59 pm

2 stops24h 59m

$486

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 1/8

11:10 am-12:50 pm

2 stops17h 40m

Porto

Thu 1/22

6:00 am-9:56 pm

2 stops23h 56m

$486

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 1/7

1:00 pm-11:10 am

2 stops38h 10m

Porto

Wed 1/21

12:10 pm-10:33 pm

2 stops42h 23m

$497

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 11/27

4:40 pm-4:55 pm

1 stop16h 15m

Porto

Fri 12/12

5:35 pm-2:35 pm

1 stop29h 00m

$500

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 $643. If you aren’t able to travel during the month of February, then book flights to Porto from California during January instead. Flights to Porto in January, while not as cheap as those in February, still average around $664.

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 $912 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 14% 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
1,582 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
7,528 reviews
Search British Airways flights
IberiaPriceFrom $540Free CancellationRating
7.0
3,020 reviews
Search Iberia flights
LufthansaPriceFrom $550Free CancellationRating
6.8
7,576 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $573Free CancellationRating
7.1
2,065 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $574Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
SWISSPriceFrom $610Free CancellationRating
7.5
1,788 reviews
Search SWISS flights
United AirlinesPriceFrom $615Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
DeltaPriceFrom $661Free CancellationRating
7.9
8,007 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
Matosinhos
Braga
Lamego
Guimarães
Esposende
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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