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Cheap flights from California to Porto from $261

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 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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
7:55 pm - 7:10 am
LAX
-
OPO
27h 15m
1 stop
Multiple Airlines Logo
6:35 pm - 6:10 pm
OPO
-
LAX
31h 35m
1 stop
$574Multiple Airlines
Sun, Apr 5 - Tue, Apr 14
Scandinavian Airlines Logo
7:10 pm - 11:00 am
LAX
-
OPO
31h 50m
1 stop
Scandinavian Airlines Logo
11:50 am - 4:50 pm
OPO
-
LAX
37h 00m
1 stop
$582Scandinavian Airlines
Mon, Apr 6 - Wed, Apr 22
Multiple Airlines Logo
7:55 pm - 7:20 am
LAX
-
OPO
27h 25m
1 stop
Multiple Airlines Logo
6:35 pm - 6:10 pm
OPO
-
LAX
31h 35m
1 stop
$602Multiple Airlines
Fri, Apr 3 - Tue, Apr 14
Delta Logo
6:00 pm - 10:00 pm
LAX
-
OPO
20h 00m
1 stop
Delta Logo
5:00 am - 2:45 pm
OPO
-
LAX
17h 45m
1 stop
$624Delta
Mon, Apr 27 - Wed, May 20
TAP AIR PORTUGAL Logo
4:45 pm - 5:00 pm
LAX
-
OPO
16h 15m
1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 1:45 pm
OPO
-
LAX
27h 45m
1 stop
$626TAP AIR PORTUGAL
Tue, Apr 14 - Mon, Apr 20
Delta Logo
2:20 pm - 10:00 pm
ONT
-
OPO
23h 40m
2 stops
Delta Logo
5:00 am - 5:15 pm
OPO
-
ONT
20h 15m
2 stops
$657Delta
Wed, Apr 22 - Wed, Apr 29
Turkish Airlines Logo
6:45 pm - 11:30 pm
SFO
-
OPO
20h 45m
1 stop
Turkish Airlines Logo
4:50 pm - 4:40 pm
OPO
-
SFO
31h 50m
1 stop
$662Turkish Airlines
Tue, May 12 - Tue, May 26
Turkish Airlines Logo
6:45 pm - 3:45 pm
SFO
-
OPO
37h 00m
1 stop
Turkish Airlines Logo
4:40 pm - 4:40 pm
OPO
-
SFO
32h 00m
1 stop
$663Turkish Airlines
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
5:45 am - 6:55 am
ONT
-
OPO
17h 10m
2 stops
United Airlines Logo
9:00 am - 8:52 pm
OPO
-
ONT
19h 52m
2 stops
$665United Airlines
Sun, Aug 9 - Fri, Aug 21
United Airlines Logo
6:45 am - 9:45 am
SNA
-
OPO
43h 00m
3 stops
United Airlines Logo
12:35 pm - 9:38 am
OPO
-
SNA
29h 03m
1 stop
$704United Airlines
Sat, Apr 18 - Fri, May 1

Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets
Scandinavian Airlines
Apr 6
LAX7:10 pmLos Angeles Los Angeles
31h 50m
1 stop
OPO11:00 amPorto
Apr 22
OPO11:50 amPorto
37h 00m
1 stop
LAX4:50 pmLos Angeles Los Angeles
$582
Scandinavian Airlines
Apr 6
LAX7:10 pmLos Angeles Los Angeles
31h 50m
1 stop
OPO11:00 amPorto
Apr 22
OPO11:50 amPorto
37h 00m
1 stop
LAX4:50 pmLos Angeles Los Angeles
$589
Scandinavian Airlines
Apr 29
LAX7:10 pmLos Angeles Los Angeles
37h 55m
1 stop
OPO5:05 pmPorto
May 7
OPO11:50 amPorto
37h 00m
1 stop
LAX4:50 pmLos Angeles Los Angeles
$604

KLM flights from California to Porto

Our best KLM deals on California to Porto flight tickets
KLM
Apr 6
LAX4:45 pmLos Angeles Los Angeles
21h 30m
1 stop
OPO10:15 pmPorto
Apr 23
OPO7:10 pmPorto
24h 40m
1 stop
LAX11:50 amLos Angeles Los Angeles
$628
KLM
Apr 14
SAN1:40 pmSan Diego
20h 40m
1 stop
OPO6:20 pmPorto
May 10
OPO5:55 amPorto
20h 08m
2 stops
SAN6:03 pmSan Diego
$675
KLM
May 4
LAX6:45 pmLos Angeles Los Angeles
19h 15m
1 stop
OPO10:00 pmPorto
May 10
OPO5:55 amPorto
18h 10m
1 stop
LAX4:05 pmLos Angeles Los Angeles
$677

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 March 9, 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 Los Angeles

Sun 4/5

7:55 pm-7:10 am

1 stop27h 15m

Porto

Tue 4/14

6:35 pm-6:10 pm

1 stop31h 35m

$574

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Mon 4/6

7:10 pm-11:00 am

1 stop31h 50m

Porto

Wed 4/22

11:50 am-4:50 pm

1 stop37h 00m

$582

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Fri 4/3

7:55 pm-7:20 am

1 stop27h 25m

Porto

Tue 4/14

6:35 pm-6:10 pm

1 stop31h 35m

$602

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Mon 4/27

6:00 pm-10:00 pm

1 stop20h 00m

Porto

Wed 5/20

5:00 am-2:45 pm

1 stop17h 45m

$624

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Tue 4/14

4:45 pm-5:00 pm

1 stop16h 15m

Porto

Mon 4/20

6:00 pm-1:45 pm

1 stop27h 45m

$626

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 4/22

2:20 pm-10:00 pm

2 stops23h 40m

Porto

Wed 4/29

5:00 am-5:15 pm

2 stops20h 15m

$657

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 5/12

6:45 pm-11:30 pm

1 stop20h 45m

Porto

Tue 5/26

4:50 pm-4:40 pm

1 stop31h 50m

$662

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 4/22

6:45 pm-3:45 pm

1 stop37h 00m

Porto

Wed 4/29

4:40 pm-4:40 pm

1 stop32h 00m

$663
Quickest round-trip

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Sun 8/9

5:45 am-6:55 am

2 stops17h 10m

Porto

Fri 8/21

9:00 am-8:52 pm

2 stops19h 52m

$665

Santa AnaPorto

SNA - OPO

SNAOPO

Santa Ana J. Wayne/Orange Cnty

Sat 4/18

6:45 am-9:45 am

3 stops43h 00m

Porto

Fri 5/1

12:35 pm-9:38 am

1 stop29h 03m

$704

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 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 $851 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 $753 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

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from California to Porto takes 13h 05m
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
7.8
1,468 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $431Free CancellationRating
7.1
2,163 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $480Free CancellationRating
7.3
1,708 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $495Free CancellationRating
7.9
8,276 reviews
Search Delta flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
7,781 reviews
Search British Airways flights
IberiaPriceFrom $545Free CancellationRating
7.0
3,133 reviews
Search Iberia flights
LufthansaPriceFrom $550Free CancellationRating
6.8
7,840 reviews
Search Lufthansa flights
American AirlinesPriceFrom $574Free CancellationRating
7.1
11,409 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,409 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
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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