What is the cheapest airline that flies from California to Porto?

United Airlines, Delta, and Lufthansa are the most popular carriers operating from California to Porto

How long does it take to fly to Porto?

Flight times from California to Porto vary, but if you’re flying out of Santa Ana and flying into Porto (one of the most popular routes), then the duration is 13h 05m on average. Another popular route from California to Porto is flying from San Francisco to Porto, which will take roughly 13h 25m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Porto?

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Porto from California according to our data. TAP AIR PORTUGAL is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 11 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

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?

As of September 2026, there are 11 operators available to choose from 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.

$259 Cheap Flights from California to Porto in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:35 pm - 6:00 pmSFO San Francisco-OPO Porto

15h 25m1 stop Lisbon Humberto Delgado

7:00 am - 3:45 pmOPO Porto-SFO San Francisco

15h 45m1 stop Lisbon Humberto Delgado

$559TAP AIR PORTUGAL

Sat, Oct 24 - Sat, Oct 31

10:20 am - 10:15 amLAX Los Angeles-OPO Porto

16h 55m1 stop Casablanca Mohamed V

11:15 am - 7:20 amOPO Porto-LAX Los Angeles

28h 05m1 stop Casablanca Mohamed V

$565Royal Air Maroc

Fri, Oct 30 - Sat, Nov 7

10:20 am - 11:15 amLAX Los Angeles-OPO Porto

16h 55m1 stop Casablanca Mohamed V

12:15 pm - 8:20 amOPO Porto-LAX Los Angeles

28h 05m1 stop Casablanca Mohamed V

$574Royal Air Maroc

Fri, Oct 9 - Sat, Oct 24

11:47 pm - 9:30 amLAX Los Angeles-OPO Porto

25h 43m2 stops Chicago O'Hare Intl Newark

12:35 pm - 10:55 pmOPO Porto-LAX Los Angeles

18h 20m2 stops Newark Denver Intl

$589United Airlines

Mon, Nov 9 - Tue, Nov 24

6:00 am - 9:30 amLAX Los Angeles-OPO Porto

19h 30m1 stop Newark

12:35 pm - 10:55 pmOPO Porto-LAX Los Angeles

18h 20m2 stops Newark Denver Intl

$589United Airlines

Mon, Nov 9 - Tue, Nov 24

8:40 am - 10:25 amLAX Los Angeles-OPO Porto

17h 45m1 stop New York John F Kennedy Intl

4:10 pm - 11:45 amOPO Porto-LAX Los Angeles

27h 35m1 stop Amsterdam Schiphol

$599KLM

Sun, Oct 18 - Tue, Nov 3

10:40 am - 8:15 amLAX Los Angeles-OPO Porto

13h 35m1 stop New York John F Kennedy Intl

10:15 am - 6:33 pmOPO Porto-LAX Los Angeles

16h 18m1 stop New York John F Kennedy Intl

$599Delta

Wed, Nov 4 - Thu, Nov 19

6:00 am - 10:30 amLAX Los Angeles-OPO Porto

20h 30m1 stop New York John F Kennedy Intl

10:15 am - 9:25 pmOPO Porto-LAX Los Angeles

19h 10m1 stop New York John F Kennedy Intl

$599Delta

Tue, Oct 20 - Thu, Nov 5

8:40 am - 10:30 amLAX Los Angeles-OPO Porto

17h 50m1 stop New York John F Kennedy Intl

11:30 am - 9:35 pmOPO Porto-LAX Los Angeles

18h 05m1 stop Paris Charles de Gaulle

$604KLM

Tue, Oct 13 - Tue, Nov 10

7:35 pm - 7:30 amSFO San Francisco-OPO Porto

28h 55m1 stop Lisbon Humberto Delgado

12:00 pm - 2:45 pmOPO Porto-SFO San Francisco

34h 45m1 stop Lisbon Humberto Delgado

$657TAP AIR PORTUGAL

Sat, Oct 24 - Fri, Nov 6

Cheap last minute flights

Enter your travel dates to find the best prices.

4:45 pm - 12:40 amLAX Los Angeles-OPO Porto

23h 55m1 stop Lisbon Humberto Delgado

5:00 am - 3:15 pmOPO Porto-LAX Los Angeles

18h 15m1 stop Lisbon Humberto Delgado

$739TAP AIR PORTUGAL

Tue, Sep 29 - Tue, Nov 3

4:45 pm - 12:40 amLAX Los Angeles-OPO Porto

23h 55m1 stop Lisbon Humberto Delgado

5:00 am - 3:15 pmOPO Porto-LAX Los Angeles

18h 15m1 stop Lisbon Humberto Delgado

$740TAP AIR PORTUGAL

Tue, Sep 29 - Tue, Nov 3

2:00 pm - 3:25 pmLAX Los Angeles-OPO Porto

17h 25m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:00 am - 11:45 amOPO Porto-LAX Los Angeles

14h 45m1 stop Amsterdam Schiphol

$929Delta

Tue, Sep 29 - Tue, Nov 3

11:34 am - 3:25 pmLAX Los Angeles-OPO Porto

19h 51m2 stops Salt Lake City Paris Charles de Gaulle

5:00 am - 11:45 amOPO Porto-LAX Los Angeles

14h 45m1 stop Amsterdam Schiphol

$929Delta

Tue, Sep 29 - Tue, Nov 3

7:30 pm - 11:25 amSFO San Francisco-OPO Porto

55h 55m2 stops Vancouver Intl Zurich

8:05 pm - 4:15 pmOPO Porto-SFO San Francisco

52h 10m2 stops Geneva Geneve-Cointrin Zurich

$977SWISS

Sat, Oct 3 - Mon, Oct 12

7:30 pm - 7:55 amSFO San Francisco-OPO Porto

52h 25m2 stops Vancouver Intl Zurich

8:05 pm - 4:15 pmOPO Porto-SFO San Francisco

52h 10m2 stops Geneva Geneve-Cointrin Zurich

$982SWISS

Sat, Oct 3 - Mon, Oct 12

10:40 pm - 9:45 amSFO San Francisco-OPO Porto

27h 05m2 stops Washington, D.C. Dulles Intl Newark

4:35 pm - 12:40 pmOPO Porto-SFO San Francisco

28h 05m1 stop Frankfurt am Main

$1,025Multiple Airlines

Sat, Oct 3 - Mon, Oct 12

9:15 pm - 9:45 amSFO San Francisco-OPO Porto

28h 30m1 stop Newark

4:35 pm - 12:40 pmOPO Porto-SFO San Francisco

28h 05m1 stop Frankfurt am Main

$1,035Multiple Airlines

Sat, Oct 3 - Mon, Oct 12

2:20 pm - 3:30 pmSFO San Francisco-OPO Porto

17h 10m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

7:55 pm - 11:45 amOPO Porto-SFO San Francisco

23h 50m1 stop Amsterdam Schiphol

$1,060KLM

Sat, Oct 3 - Mon, Oct 12

11:35 am - 10:20 amSFO San Francisco-OPO Porto

14h 45m1 stop New York John F Kennedy Intl

7:55 pm - 11:45 amOPO Porto-SFO San Francisco

23h 50m1 stop Amsterdam Schiphol

$1,107KLM

Sat, Oct 3 - Mon, Oct 12

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

Iberia

Nov 9

LAX6:30 pmLos Angeles

17h 30m

2 stops

OPO8:00 pmPorto

Nov 23

OPO8:40 pmPorto

29h 40m

2 stops

LAX6:20 pmLos Angeles

$603

Iberia

Jan 13

LAX6:15 pmLos Angeles

17h 45m

1 stop

OPO8:00 pmPorto

Jan 18

OPO8:40 pmPorto

20h 24m

2 stops

LAX9:04 amLos Angeles

$605

Iberia

Nov 3

SFO11:47 pmSan Francisco

32h 13m

2 stops

OPO4:00 pmPorto

Nov 11

OPO8:40 pmPorto

20h 16m

2 stops

SFO8:56 amSan Francisco

$610

SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets

SWISS

Nov 9

LAX7:30 pmLos Angeles

31h 45m

1 stop

OPO11:15 amPorto

Nov 24

OPO12:05 pmPorto

36h 30m

1 stop

LAX4:35 pmLos Angeles

$616

SWISS

Nov 1

SAN10:20 pmSan Diego

27h 10m

1 stop

OPO9:30 amPorto

Dec 14

OPO7:20 pmPorto

33h 17m

2 stops

SAN8:37 pmSan Diego

$633

SWISS

Oct 21

LAX7:35 pmLos Angeles

14h 55m

1 stop

OPO6:30 pmPorto

Nov 5

OPO10:00 amPorto

38h 35m

2 stops

LAX4:35 pmLos Angeles

$646

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 10/24

7:35 pm-6:00 pm

1 stop15h 25m

Porto

Sat 10/31

7:00 am-3:45 pm

1 stop15h 45m

$559

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 10/30

10:20 am-10:15 am

1 stop16h 55m

Porto

Sat 11/7

11:15 am-7:20 am

1 stop28h 05m

$565

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 10/9

10:20 am-11:15 am

1 stop16h 55m

Porto

Sat 10/24

12:15 pm-8:20 am

1 stop28h 05m

$574

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Mon 11/9

11:47 pm-9:30 am

2 stops25h 43m

Porto

Tue 11/24

12:35 pm-10:55 pm

2 stops18h 20m

$589

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Mon 11/9

6:00 am-9:30 am

1 stop19h 30m

Porto

Tue 11/24

12:35 pm-10:55 pm

2 stops18h 20m

$589

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Sun 10/18

8:40 am-10:25 am

1 stop17h 45m

Porto

Tue 11/3

4:10 pm-11:45 am

1 stop27h 35m

$599

Quickest round-trip

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Wed 11/4

10:40 am-8:15 am

1 stop13h 35m

Porto

Thu 11/19

10:15 am-6:33 pm

1 stop16h 18m

$599

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Tue 10/20

6:00 am-10:30 am

1 stop20h 30m

Porto

Thu 11/5

10:15 am-9:25 pm

1 stop19h 10m

$599

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Tue 10/13

8:40 am-10:30 am

1 stop17h 50m

Porto

Tue 11/10

11:30 am-9:35 pm

1 stop18h 05m

$604

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 10/24

7:35 pm-7:30 am

1 stop28h 55m

Porto

Fri 11/6

12:00 pm-2:45 pm

1 stop34h 45m

$657

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $645. 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 $690.

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 $855 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 $807 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 56% 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

Best Price Found	$259
Fastest flight time	13h 05m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $259. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $559.

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

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?
As of September 2026, there are 11 operators available to choose from 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
KLM	PriceFrom $151	Free Cancellation	Rating 7.8 1,577 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,384 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 1,998 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,606 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,245 reviews	Search Lufthansa flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,247 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,083 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,454 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $681	Free Cancellation	Rating 7.0 3,246 reviews	Search Iberia flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,701 reviews	Search Air Canada flights

Coimbra

Vila Nova de Gaia

Braga

Aveiro

Pinhao

Matosinhos

Esposende

Chaves

Viseu

Arcos de Valdevez

Espinho

Guimarães

Lamego

Ponte de Lima

Penafiel

Caminha

Mira

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 10/27

Tue 11/3

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Nearby airports

Airlines

Cabin classes

Other Portugal destinations

Other flights from California

Complete your trip

Feeling lucky

Airports servicing Portugal

Faro Airport

Lisbon Humberto Delgado Airport

Azores Airport

Madeira Airport

Algarve Airport

Cheap flights from California to Porto from $259

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 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from California to Porto

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from California to Porto that are best for you.

See travel insights to Porto from

How to get the cheapest flight ticket from California to Porto

What is the cheapest month to fly to Porto?

How far in advance should I book a flight from California to Porto?

Can stopping save me money on California to Porto flights?

What is the cheapest airline that flies from California to Porto?

What airlines fly to Porto?

How long does it take to fly to Porto?

Cheap California to Porto flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from California to Porto

Best airlines flying from California to Porto

Compare and see reviews for airlines that fly from California to Porto with momondo

Traveling to a place near Porto?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal

Fly your favorite airline to Porto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Porto

List of cabin classes available on flights landing in Porto. Availability may vary depending on flight origin and airline.

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from California

According to popular flight searches on momondo this year

Complete your trip to Porto

Explore popular destinations other users love

According to popular flight searches on momondo this year