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Cheap flights from California to Porto from $346

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 10/21. 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.
Multiple Airlines Logo
8:15 am - 7:00 am
LAX
-
OPO
14h 45m
1 stop
Multiple Airlines Logo
1:45 pm - 3:15 pm
OPO
-
LAX
33h 30m
1 stop
$721Multiple Airlines
Wed, Oct 21 - Wed, Nov 18
Multiple Airlines Logo
7:35 pm - 11:25 am
LAX
-
OPO
31h 50m
1 stop
Multiple Airlines Logo
6:00 am - 9:27 pm
OPO
-
LAX
23h 27m
2 stops
$730Multiple Airlines
Wed, Oct 21 - Wed, Nov 18
KLM Logo
7:20 pm - 10:00 pm
LAX
-
OPO
19h 40m
1 stop
KLM Logo
5:00 am - 11:45 am
OPO
-
LAX
14h 45m
1 stop
$734KLM
Tue, Oct 27 - Thu, Nov 5
Delta Logo
12:15 pm - 3:25 pm
LAX
-
OPO
19h 10m
2 stops
Delta Logo
5:00 am - 11:45 am
OPO
-
LAX
14h 45m
1 stop
$738Delta
Wed, Oct 14 - Wed, Nov 4
United Airlines Logo
7:00 am - 7:00 am
LAX
-
OPO
16h 00m
2 stops
United Airlines Logo
12:30 pm - 12:09 am
OPO
-
LAX
19h 39m
2 stops
$745United Airlines
Wed, Oct 14 - Wed, Nov 4
United Airlines Logo
8:40 am - 9:30 am
LAX
-
OPO
17h 50m
2 stops
United Airlines Logo
12:30 pm - 12:09 am
OPO
-
LAX
19h 39m
2 stops
$747United Airlines
Tue, Oct 27 - Thu, Nov 5
SWISS Logo
7:35 pm - 11:25 am
LAX
-
OPO
31h 50m
1 stop
SWISS Logo
7:20 pm - 5:35 pm
OPO
-
LAX
29h 15m
1 stop
$761SWISS
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
8:15 am - 7:00 am
LAX
-
OPO
14h 45m
1 stop
Multiple Airlines Logo
7:20 pm - 5:35 pm
OPO
-
LAX
29h 15m
1 stop
$763Multiple Airlines
Tue, Oct 13 - Tue, Oct 27
KLM Logo
12:25 pm - 3:25 pm
SMF
-
OPO
20h 00m
2 stops
KLM Logo
5:00 am - 4:02 pm
OPO
-
SMF
19h 02m
2 stops
$807KLM
Sun, Oct 25 - Sun, Nov 8
Delta Logo
10:00 am - 3:25 pm
SFO
-
OPO
21h 25m
2 stops
Delta Logo
5:00 am - 11:50 am
OPO
-
SFO
14h 50m
1 stop
$808Delta
Tue, Oct 20 - Tue, Nov 3

KLM flights from California to Porto

Our best KLM deals on California to Porto flight tickets
KLM
Oct 27
LAX7:20 pmLos Angeles
19h 40m
1 stop
OPO10:00 pmPorto
Nov 5
OPO5:00 amPorto
14h 45m
1 stop
LAX11:45 amLos Angeles
$734
KLM
Nov 1
SFO11:30 amSan Francisco
13h 35m
1 stop
OPO9:05 amPorto
Nov 9
OPO11:15 amPorto
32h 35m
1 stop
SFO11:50 amSan Francisco
$804
KLM
Oct 25
SMF12:25 pmSacramento Intl
20h 00m
2 stops
OPO3:25 pmPorto
Nov 8
OPO5:00 amPorto
19h 02m
2 stops
SMF4:02 pmSacramento Intl
$807

Delta flights from California to Porto

Our best Delta deals on California to Porto flight tickets
Delta
Oct 14
LAX12:15 pmLos Angeles
19h 10m
2 stops
OPO3:25 pmPorto
Nov 4
OPO5:00 amPorto
14h 45m
1 stop
LAX11:45 amLos Angeles
$738
Delta
Aug 19
LAX6:00 amLos Angeles
20h 30m
1 stop
OPO10:30 amPorto
Sep 7
OPO11:25 amPorto
35h 20m
1 stop
LAX2:45 pmLos Angeles
$794
Delta
Aug 10
LAX11:00 amLos Angeles
20h 25m
2 stops
OPO3:25 pmPorto
Aug 20
OPO5:00 amPorto
17h 45m
1 stop
LAX2:45 pmLos Angeles
$798

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 May 5, 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

Wed 10/21

8:15 am-7:00 am

1 stop14h 45m

Porto

Wed 11/18

1:45 pm-3:15 pm

1 stop33h 30m

$721

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/21

7:35 pm-11:25 am

1 stop31h 50m

Porto

Wed 11/18

6:00 am-9:27 pm

2 stops23h 27m

$730

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 10/27

7:20 pm-10:00 pm

1 stop19h 40m

Porto

Thu 11/5

5:00 am-11:45 am

1 stop14h 45m

$734
Quickest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/14

12:15 pm-3:25 pm

2 stops19h 10m

Porto

Wed 11/4

5:00 am-11:45 am

1 stop14h 45m

$738

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/14

7:00 am-7:00 am

2 stops16h 00m

Porto

Wed 11/4

12:30 pm-12:09 am

2 stops19h 39m

$745

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 10/27

8:40 am-9:30 am

2 stops17h 50m

Porto

Thu 11/5

12:30 pm-12:09 am

2 stops19h 39m

$747

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 10/20

7:35 pm-11:25 am

1 stop31h 50m

Porto

Tue 10/27

7:20 pm-5:35 pm

1 stop29h 15m

$761

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 10/13

8:15 am-7:00 am

1 stop14h 45m

Porto

Tue 10/27

7:20 pm-5:35 pm

1 stop29h 15m

$763

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Sun 10/25

12:25 pm-3:25 pm

2 stops20h 00m

Porto

Sun 11/8

5:00 am-4:02 pm

2 stops19h 02m

$807

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 10/20

10:00 am-3:25 pm

2 stops21h 25m

Porto

Tue 11/3

5:00 am-11:50 am

1 stop14h 50m

$808

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 May instead. Flights to Porto in May, while not as cheap as those in January, still average around $263.

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 $862 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 $700 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 5% 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 07m

Direct flights

None
The fastest flight from California to Porto takes 13h 07m
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
LEVELPriceFrom $263Free CancellationRating
0.0
Search LEVEL flights
KLMPriceFrom $366Free CancellationRating
7.8
1,511 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $431Free CancellationRating
7.2
2,237 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $480Free CancellationRating
7.4
1,769 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,459 reviews
Search Delta flights
LufthansaPriceFrom $544Free CancellationRating
6.8
7,974 reviews
Search Lufthansa flights
IberiaPriceFrom $545Free CancellationRating
7.0
3,212 reviews
Search Iberia flights
American AirlinesPriceFrom $546Free CancellationRating
7.1
11,672 reviews
Search American Airlines flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,684 reviews
Search United Airlines flights
SWISSPriceFrom $623Free CancellationRating
7.6
1,936 reviews
Search SWISS 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
Esposende
Chaves
Pinhao
Guimarães
Espinho
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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