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Cheap flights from California to Porto from $236

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 5/4. 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.
TAP AIR PORTUGAL Logo
4:40 pm - 2:30 pm
LAX
-
OPO
13h 50m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 2:45 pm
OPO
-
LAX
24h 10m
1 stop
$431TAP AIR PORTUGAL
Fri, May 15 - Mon, May 25
TAP AIR PORTUGAL Logo
8:20 pm - 12:40 am
SFO
-
OPO
20h 20m
1 stop
TAP AIR PORTUGAL Logo
5:05 am - 5:35 pm
OPO
-
SFO
20h 30m
1 stop
$431TAP AIR PORTUGAL
Fri, Apr 17 - Sat, Apr 25
SWISS Logo
7:10 pm - 11:15 am
LAX
-
OPO
32h 05m
1 stop
SWISS Logo
7:25 pm - 5:35 pm
OPO
-
LAX
29h 10m
1 stop
$445SWISS
Mon, Mar 2 - Tue, Mar 10
Multiple Airlines Logo
4:00 pm - 2:55 pm
LAX
-
OPO
15h 55m
1 stop
Multiple Airlines Logo
7:20 pm - 5:35 pm
OPO
-
LAX
29h 15m
1 stop
$465Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
SWISS Logo
8:10 pm - 6:35 pm
LAX
-
OPO
15h 25m
1 stop
SWISS Logo
7:20 pm - 5:35 pm
OPO
-
LAX
29h 15m
1 stop
$466SWISS
Mon, Mar 9 - Mon, Mar 23
Iberia Logo
10:47 am - 4:00 pm
LAX
-
OPO
21h 13m
2 stops
Iberia Logo
8:40 pm - 5:35 pm
OPO
-
LAX
27h 55m
1 stop
$471Iberia
Mon, Mar 2 - Tue, Mar 10
United Airlines Logo
7:00 am - 9:30 am
SMF
-
OPO
42h 30m
2 stops
United Airlines Logo
12:30 pm - 10:19 am
OPO
-
SMF
28h 49m
2 stops
$480United Airlines
Mon, Mar 2 - Wed, Mar 18
Iberia Logo
6:00 am - 7:40 am
SMF
-
OPO
17h 40m
2 stops
Iberia Logo
8:40 pm - 8:01 pm
OPO
-
SMF
31h 21m
2 stops
$481Iberia
Thu, Feb 26 - Thu, Mar 5
Multiple Airlines Logo
7:20 am - 10:30 am
SAN
-
OPO
19h 10m
2 stops
Multiple Airlines Logo
5:00 am - 1:05 pm
OPO
-
SAN
15h 05m
1 stop
$484Multiple Airlines
Tue, Feb 24 - Tue, Mar 10
United Airlines Logo
7:45 am - 9:30 am
SAN
-
OPO
17h 45m
2 stops
United Airlines Logo
6:00 am - 8:40 am
OPO
-
SAN
33h 40m
2 stops
$487United Airlines
Wed, Feb 25 - Fri, Mar 13

TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL deals on California to Porto flight tickets
TAP AIR PORTUGAL
May 15
LAX4:40 pmLos Angeles
13h 50m
1 stop
OPO2:30 pmPorto
May 31
OPO6:00 amPorto
15h 55m
1 stop
LAX1:55 pmLos Angeles
$431
TAP AIR PORTUGAL
Mar 3
LAX4:45 pmLos Angeles
18h 10m
1 stop
OPO6:55 pmPorto
Mar 10
OPO6:55 amPorto
16h 05m
1 stop
LAX4:00 pmLos Angeles
$432
TAP AIR PORTUGAL
Feb 23
SFO4:35 pmSan Francisco
33h 35m
1 stop
OPO10:10 amPorto
Mar 2
OPO6:55 amPorto
15h 40m
1 stop
SFO2:35 pmSan Francisco
$443

Delta flights from California to Porto

Our best Delta deals on California to Porto flight tickets
Delta
Apr 19
LAX6:00 pmLos Angeles
20h 00m
1 stop
OPO10:00 pmPorto
Apr 28
OPO11:45 amPorto
32h 05m
1 stop
LAX11:50 amLos Angeles
$478
Delta
Mar 3
LAX7:45 amLos Angeles
18h 45m
2 stops
OPO10:30 amPorto
Mar 10
OPO5:00 amPorto
14h 45m
1 stop
LAX12:45 pmLos Angeles
$484
Delta
Feb 24
SAN2:00 pmSan Diego
24h 25m
1 stop
OPO10:25 pmPorto
Mar 11
OPO11:15 amPorto
32h 50m
1 stop
SAN1:05 pmSan Diego
$485

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 28, 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

Fri 5/15

4:40 pm-2:30 pm

1 stop13h 50m

Porto

Mon 5/25

10:35 pm-2:45 pm

1 stop24h 10m

$431

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Fri 4/17

8:20 pm-12:40 am

1 stop20h 20m

Porto

Sat 4/25

5:05 am-5:35 pm

1 stop20h 30m

$431

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/2

7:10 pm-11:15 am

1 stop32h 05m

Porto

Tue 3/10

7:25 pm-5:35 pm

1 stop29h 10m

$445

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/9

4:00 pm-2:55 pm

1 stop15h 55m

Porto

Mon 3/16

7:20 pm-5:35 pm

1 stop29h 15m

$465

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/9

8:10 pm-6:35 pm

1 stop15h 25m

Porto

Mon 3/23

7:20 pm-5:35 pm

1 stop29h 15m

$466

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/2

10:47 am-4:00 pm

2 stops21h 13m

Porto

Tue 3/10

8:40 pm-5:35 pm

1 stop27h 55m

$471

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Mon 3/2

7:00 am-9:30 am

2 stops42h 30m

Porto

Wed 3/18

12:30 pm-10:19 am

2 stops28h 49m

$480

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Thu 2/26

6:00 am-7:40 am

2 stops17h 40m

Porto

Thu 3/5

8:40 pm-8:01 pm

2 stops31h 21m

$481

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 2/24

7:20 am-10:30 am

2 stops19h 10m

Porto

Tue 3/10

5:00 am-1:05 pm

1 stop15h 05m

$484

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 2/25

7:45 am-9:30 am

2 stops17h 45m

Porto

Fri 3/13

6:00 am-8:40 am

2 stops33h 40m

$487

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 $625. 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 $649.

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 $875 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 $765 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 3% 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 $263Free CancellationRating
0.0
Search LEVEL flights
KLMPriceFrom $366Free CancellationRating
7.7
1,443 reviews
Search KLM flights
IberiaPriceFrom $451Free CancellationRating
7.0
3,099 reviews
Search Iberia flights
Scandinavian AirlinesPriceFrom $460Free CancellationRating
7.3
1,672 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $484Free CancellationRating
7.9
8,124 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom $522Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
7,705 reviews
Search British Airways flights
LufthansaPriceFrom $550Free CancellationRating
6.8
7,752 reviews
Search Lufthansa flights
American AirlinesPriceFrom $574Free CancellationRating
7.2
11,199 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,213 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
Aveiro
Matosinhos
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Ponte de Lima
Viseu
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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