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Cheap flights from California to Porto from $363

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 9/20. 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
5:05 pm - 7:05 pm
LAX
-
OPO
18h 00m
1 stop
Multiple Airlines Logo
9:55 pm - 6:10 pm
OPO
-
LAX
28h 15m
1 stop
$678Multiple Airlines
Wed, Oct 21 - Wed, Nov 18
Iberia Logo
7:00 am - 7:40 am
LAX
-
OPO
16h 40m
2 stops
Iberia Logo
9:55 pm - 6:10 pm
OPO
-
LAX
28h 15m
1 stop
$682Iberia
Wed, Oct 21 - Wed, Nov 18
Lufthansa Logo
5:30 pm - 11:25 pm
LAX
-
OPO
21h 55m
1 stop
Lufthansa Logo
6:00 am - 8:48 pm
OPO
-
LAX
22h 48m
2 stops
$738Lufthansa
Wed, Oct 21 - Wed, Nov 18
United Airlines Logo
8:15 am - 7:00 am
LAX
-
OPO
14h 45m
1 stop
United Airlines Logo
12:30 pm - 12:09 am
OPO
-
LAX
19h 39m
2 stops
$741United Airlines
Wed, Oct 14 - Wed, Nov 11
United Airlines Logo
5:00 am - 7:00 am
LAX
-
OPO
18h 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 11
Delta Logo
6:00 pm - 10:00 pm
LAX
-
OPO
20h 00m
1 stop
Delta Logo
5:00 am - 11:45 am
OPO
-
LAX
14h 45m
1 stop
$764Delta
Wed, Sep 23 - Wed, Nov 4
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
$769Delta
Wed, Sep 23 - Wed, Nov 4
Turkish Airlines Logo
8:10 pm - 3:45 pm
LAX
-
OPO
35h 35m
1 stop
Turkish Airlines Logo
10:55 am - 5:50 pm
OPO
-
LAX
37h 55m
1 stop
$774Turkish Airlines
Wed, Sep 9 - Tue, Oct 27
Turkish Airlines Logo
8:10 pm - 3:40 pm
LAX
-
OPO
35h 30m
1 stop
Turkish Airlines Logo
10:40 am - 11:40 am
OPO
-
LAX
33h 00m
1 stop
$778Turkish Airlines
Mon, Sep 14 - Fri, Sep 25
Lufthansa Logo
5:15 pm - 11:25 pm
SAN
-
OPO
22h 10m
1 stop
Lufthansa Logo
6:20 am - 3:25 pm
OPO
-
SAN
17h 05m
1 stop
$779Lufthansa
Mon, Sep 28 - Tue, Oct 13

Turkish Airlines flights from California to Porto

Our best Turkish Airlines deals on California to Porto flight tickets
Turkish Airlines
Apr 27
SFO12:55 pmSan Francisco
36h 50m
1 stop
OPO9:45 amPorto
May 12
OPO10:40 amPorto
38h 00m
1 stop
SFO4:40 pmSan Francisco
$738
Turkish Airlines
Apr 27
LAX8:10 pmLos Angeles
35h 30m
1 stop
OPO3:40 pmPorto
May 20
OPO10:45 amPorto
32h 55m
1 stop
LAX11:40 amLos Angeles
$746
Turkish Airlines
Apr 28
LAX8:10 pmLos Angeles
19h 20m
1 stop
OPO11:30 pmPorto
May 13
OPO10:45 amPorto
39h 30m
1 stop
LAX6:15 pmLos Angeles
$753

United Airlines flights from California to Porto

Our best United Airlines deals on California to Porto flight tickets
United Airlines
Oct 14
LAX8:15 amLos Angeles
14h 45m
1 stop
OPO7:00 amPorto
Nov 11
OPO12:30 pmPorto
19h 39m
2 stops
LAX12:09 amLos Angeles
$741
United Airlines
Oct 14
LAX5:00 amLos Angeles
18h 00m
2 stops
OPO7:00 amPorto
Nov 11
OPO12:30 pmPorto
19h 39m
2 stops
LAX12:09 amLos Angeles
$745
United Airlines
Sep 28
SAN7:41 pmSan Diego
27h 19m
3 stops
OPO7:00 amPorto
Oct 14
OPO12:45 pmPorto
40h 00m
2 stops
SAN8:45 pmSan Diego
$778

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 April 25, 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

5:05 pm-7:05 pm

1 stop18h 00m

Porto

Wed 11/18

9:55 pm-6:10 pm

1 stop28h 15m

$678

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/21

7:00 am-7:40 am

2 stops16h 40m

Porto

Wed 11/18

9:55 pm-6:10 pm

1 stop28h 15m

$682

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/21

5:30 pm-11:25 pm

1 stop21h 55m

Porto

Wed 11/18

6:00 am-8:48 pm

2 stops22h 48m

$738

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/14

8:15 am-7:00 am

1 stop14h 45m

Porto

Wed 11/11

12:30 pm-12:09 am

2 stops19h 39m

$741

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 10/14

5:00 am-7:00 am

2 stops18h 00m

Porto

Wed 11/11

12:30 pm-12:09 am

2 stops19h 39m

$745

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 9/23

6:00 pm-10:00 pm

1 stop20h 00m

Porto

Wed 11/4

5:00 am-11:45 am

1 stop14h 45m

$764
Quickest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 9/23

12:15 pm-3:25 pm

2 stops19h 10m

Porto

Wed 11/4

5:00 am-11:45 am

1 stop14h 45m

$769

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 9/9

8:10 pm-3:45 pm

1 stop35h 35m

Porto

Tue 10/27

10:55 am-5:50 pm

1 stop37h 55m

$774

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 9/14

8:10 pm-3:40 pm

1 stop35h 30m

Porto

Fri 9/25

10:40 am-11:40 am

1 stop33h 00m

$778

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 9/28

5:15 pm-11:25 pm

1 stop22h 10m

Porto

Tue 10/13

6:20 am-3:25 pm

1 stop17h 05m

$779

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 $621. 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 $671.

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 $861 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 31% 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 25m

Direct flights

None
The fastest flight from California to Porto takes 13h 25m
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
1,509 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $431Free CancellationRating
7.1
2,223 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $480Free CancellationRating
7.4
1,761 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,459 reviews
Search Delta flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
7,914 reviews
Search British Airways flights
LufthansaPriceFrom $544Free CancellationRating
6.8
7,950 reviews
Search Lufthansa flights
IberiaPriceFrom $545Free CancellationRating
7.0
3,196 reviews
Search Iberia flights
American AirlinesPriceFrom $546Free CancellationRating
7.1
11,673 reviews
Search American Airlines flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,653 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
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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