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 10m on average. Another popular route from California to Porto is flying from Los Angeles to Porto, which will take roughly 13h 25m. Keep in mind that layovers or delays could extend your travel time.

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

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

What airlines fly to Porto?

United Airlines, TAP AIR PORTUGAL and Delta are the top three most popular airlines that fly to Porto from California according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 12 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 August 2026, there are 12 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.

$288 Cheap Flights from California to Porto in 2026

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.

8:25 am - 12:50 pmSFO San Francisco-OPO Porto

20h 25m2 stops Montreal Pierre Elliott Trudeau Intl Munich Franz Josef Strauss

6:15 am - 7:35 pmOPO Porto-SFO San Francisco

21h 20m1 stop Munich Franz Josef Strauss

$723Multiple Airlines

Mon, Nov 16 - Fri, Nov 27

7:25 pm - 11:15 amSFO San Francisco-OPO Porto

31h 50m1 stop Zurich

6:00 am - 4:06 pmOPO Porto-SFO San Francisco

18h 06m2 stops Frankfurt am Main Vancouver Intl

$723Multiple Airlines

Mon, Nov 9 - Fri, Nov 20

12:01 pm - 11:55 pmSMF Sacramento Intl-OPO Porto

27h 54m2 stops San Francisco Munich Franz Josef Strauss

6:00 am - 9:00 pmOPO Porto-SMF Sacramento Intl

23h 00m2 stops Frankfurt am Main Denver Intl

$727Lufthansa

Wed, Nov 4 - Wed, Nov 25

1:10 pm - 5:50 pmSNA Santa Ana J. Wayne/Orange Cnty-OPO Porto

20h 40m2 stops Dallas/Fort Worth London Heathrow

12:25 pm - 8:22 amOPO Porto-SNA Santa Ana J. Wayne/Orange Cnty

27h 57m2 stops Madrid Barajas Dallas/Fort Worth

$732British Airways

Wed, Nov 4 - Wed, Nov 11

2:22 pm - 5:50 pmONT Ontario-OPO Porto

19h 28m2 stops Dallas/Fort Worth London Heathrow

8:40 pm - 9:40 amOPO Porto-ONT Ontario

21h 00m2 stops Madrid Barajas Dallas/Fort Worth

$732British Airways

Wed, Nov 4 - Wed, Nov 11

5:00 am - 9:30 amSFO San Francisco-OPO Porto

20h 30m2 stops Denver Intl Newark

6:00 am - 4:05 pmOPO Porto-SFO San Francisco

18h 05m1 stop Frankfurt am Main

$745United Airlines

Mon, Dec 7 - Fri, Dec 11

10:55 pm - 9:30 amSFO San Francisco-OPO Porto

26h 35m2 stops Washington, D.C. Dulles Intl Newark

6:00 am - 4:05 pmOPO Porto-SFO San Francisco

18h 05m1 stop Frankfurt am Main

$745United Airlines

Mon, Dec 7 - Fri, Dec 11

8:25 am - 11:15 amSFO San Francisco-OPO Porto

42h 50m2 stops Montreal Pierre Elliott Trudeau Intl Zurich

6:00 am - 8:14 pmOPO Porto-SFO San Francisco

46h 14m2 stops Frankfurt am Main Toronto Pearson Intl

$756Air Canada

Mon, Jan 25 - Fri, Jan 29

12:01 pm - 3:20 pmSMF Sacramento Intl-OPO Porto

19h 19m2 stops San Francisco Frankfurt am Main

6:00 am - 3:21 pmOPO Porto-SMF Sacramento Intl

17h 21m2 stops Frankfurt am Main Vancouver Intl

$790Lufthansa

Wed, Nov 11 - Wed, Dec 2

8:25 am - 12:00 pmSFO San Francisco-OPO Porto

19h 35m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National

6:00 am - 4:06 pmOPO Porto-SFO San Francisco

18h 06m2 stops Frankfurt am Main Vancouver Intl

$798Air Canada

Thu, Nov 12 - Tue, Nov 24

Cheap last minute flights

Enter your travel dates to find the best prices.

7:35 pm - 12:10 amLAX Los Angeles Los Angeles-OPO Porto

20h 35m1 stop Zurich

12:05 pm - 1:10 pmOPO Porto-LAX Los Angeles Los Angeles

33h 05m1 stop Frankfurt am Main

$920Multiple Airlines

Wed, Aug 12 - Tue, Aug 18

7:35 pm - 12:10 amLAX Los Angeles Los Angeles-OPO Porto

20h 35m1 stop Zurich

12:15 pm - 4:30 pmOPO Porto-LAX Los Angeles Los Angeles

36h 15m1 stop Zurich

$928SWISS

Wed, Aug 12 - Wed, Aug 19

8:10 pm - 10:00 pmSFO San Francisco-OPO Porto

17h 50m1 stop Paris Charles de Gaulle

11:45 am - 11:45 amOPO Porto-SFO San Francisco

32h 00m1 stop Amsterdam Schiphol

$933Delta

Sun, Aug 9 - Wed, Aug 19

8:10 pm - 10:00 pmSFO San Francisco-OPO Porto

17h 50m1 stop Paris Charles de Gaulle

11:30 am - 11:45 amOPO Porto-SFO San Francisco

32h 15m1 stop Amsterdam Schiphol

$933Delta

Sun, Aug 9 - Tue, Aug 18

4:20 pm - 9:45 amSFO San Francisco-OPO Porto

33h 25m1 stop Newark

11:50 am - 11:21 amOPO Porto-SFO San Francisco

31h 31m1 stop Montreal Pierre Elliott Trudeau Intl

$934United Airlines

Sat, Aug 8 - Thu, Aug 20

11:59 pm - 9:45 amSFO San Francisco-OPO Porto

25h 46m1 stop Newark

11:20 am - 11:21 amOPO Porto-SFO San Francisco

32h 01m1 stop Montreal Pierre Elliott Trudeau Intl

$934United Airlines

Sat, Aug 8 - Wed, Aug 19

4:45 pm - 5:00 pmLAX Los Angeles Los Angeles-OPO Porto

16h 15m1 stop Lisbon Humberto Delgado

7:00 am - 2:45 pmOPO Porto-LAX Los Angeles Los Angeles

15h 45m1 stop Lisbon Humberto Delgado

$939TAP AIR PORTUGAL

Tue, Aug 11 - Tue, Aug 25

8:15 am - 7:00 amLAX Los Angeles Los Angeles-OPO Porto

14h 45m1 stop Montreal Pierre Elliott Trudeau Intl

6:00 am - 4:20 pmOPO Porto-LAX Los Angeles Los Angeles

18h 20m1 stop Frankfurt am Main

$963Multiple Airlines

Tue, Aug 11 - Wed, Aug 19

7:35 pm - 7:50 amLAX Los Angeles Los Angeles-OPO Porto

28h 15m1 stop Zurich

7:20 pm - 4:30 pmOPO Porto-LAX Los Angeles Los Angeles

29h 10m1 stop Zurich

$975SWISS

Tue, Aug 11 - Mon, Aug 24

4:45 pm - 5:00 pmLAX Los Angeles Los Angeles-OPO Porto

16h 15m1 stop Lisbon Humberto Delgado

6:00 am - 1:30 pmOPO Porto-LAX Los Angeles Los Angeles

15h 30m1 stop Lisbon Humberto Delgado

$1,000TAP AIR PORTUGAL

Tue, Aug 11 - Sun, Aug 23

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TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL deals on California to Porto flight tickets

TAP AIR PORTUGAL

Sep 17

SFO4:30 pmSan Francisco

24h 10m

1 stop

OPO12:40 amPorto

Sep 30

OPO5:05 amPorto

17h 30m

1 stop

SFO2:35 pmSan Francisco

$784

TAP AIR PORTUGAL

Sep 17

SFO4:30 pmSan Francisco

18h 25m

1 stop

OPO6:55 pmPorto

Sep 30

OPO5:05 amPorto

17h 30m

1 stop

SFO2:35 pmSan Francisco

$785

TAP AIR PORTUGAL

Oct 1

SFO4:30 pmSan Francisco

14h 30m

1 stop

OPO3:00 pmPorto

Oct 18

OPO10:30 pmPorto

23h 35m

1 stop

SFO2:05 pmSan Francisco

$787

Air Canada flights from California to Porto

Our best Air Canada deals on California to Porto flight tickets

Air Canada

Nov 12

SFO8:25 amSan Francisco

19h 35m

2 stops

OPO12:00 pmPorto

Nov 24

OPO6:00 amPorto

18h 06m

2 stops

SFO4:06 pmSan Francisco

$798

Air Canada

Sep 28

SFO8:10 amSan Francisco

14h 50m

1 stop

OPO7:00 amPorto

Oct 14

OPO6:00 amPorto

20h 41m

2 stops

SFO6:41 pmSan Francisco

$799

Air Canada

Oct 13

SNA6:22 pmSanta Ana J. Wayne/Orange Cnty

28h 38m

2 stops

OPO7:00 amPorto

Oct 22

OPO11:50 amPorto

37h 41m

2 stops

SNA5:31 pmSanta Ana J. Wayne/Orange Cnty

$824

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/16

8:25 am-12:50 pm

2 stops20h 25m

Porto

Fri 11/27

6:15 am-7:35 pm

1 stop21h 20m

$723

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/9

7:25 pm-11:15 am

1 stop31h 50m

Porto

Fri 11/20

6:00 am-4:06 pm

2 stops18h 06m

$723

SacramentoPorto

SMF Sacramento Intl - OPO Porto

SMFOPO

Sacramento Intl

Wed 11/4

12:01 pm-11:55 pm

2 stops27h 54m

Porto

Wed 11/25

6:00 am-9:00 pm

2 stops23h 00m

$727

Santa AnaPorto

SNA Santa Ana J. Wayne/Orange Cnty - OPO Porto

SNAOPO

Santa Ana J. Wayne/Orange Cnty

Wed 11/4

1:10 pm-5:50 pm

2 stops20h 40m

Porto

Wed 11/11

12:25 pm-8:22 am

2 stops27h 57m

$732

OntarioPorto

ONT Ontario - OPO Porto

ONTOPO

Ontario

Wed 11/4

2:22 pm-5:50 pm

2 stops19h 28m

Porto

Wed 11/11

8:40 pm-9:40 am

2 stops21h 00m

$732

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 12/7

5:00 am-9:30 am

2 stops20h 30m

Porto

Fri 12/11

6:00 am-4:05 pm

1 stop18h 05m

$745

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 12/7

10:55 pm-9:30 am

2 stops26h 35m

Porto

Fri 12/11

6:00 am-4:05 pm

1 stop18h 05m

$745

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 1/25

8:25 am-11:15 am

2 stops42h 50m

Porto

Fri 1/29

6:00 am-8:14 pm

2 stops46h 14m

$756

Quickest round-trip

SacramentoPorto

SMF Sacramento Intl - OPO Porto

SMFOPO

Sacramento Intl

Wed 11/11

12:01 pm-3:20 pm

2 stops19h 19m

Porto

Wed 12/2

6:00 am-3:21 pm

2 stops17h 21m

$790

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Thu 11/12

8:25 am-12:00 pm

2 stops19h 35m

Porto

Tue 11/24

6:00 am-4:06 pm

2 stops18h 06m

$798

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 $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 $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 $865 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 $816 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 22% 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 10m
Direct flights	None

The fastest flight from California to Porto takes 13h 10m

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 August 2026, there are 12 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
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,358 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom $476	Free Cancellation	Rating 7.8 1,553 reviews	Search KLM flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 1,929 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 8,153 reviews	Search British Airways flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,265 reviews	Search Iberia flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 8,177 reviews	Search Lufthansa flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,085 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,031 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,475 reviews	Search Turkish Airlines flights

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Coimbra

Braga

Aveiro

Matosinhos

Pinhao

Esposende

Lamego

Chaves

Arcos de Valdevez

Guimarães

Viseu

Espinho

Ponte de Lima

Mesao Frio

Penafiel

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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Cheap flights from California to Porto from $288

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 10/24. 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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TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL deals on California to Porto flight tickets

Air Canada flights from California to Porto

Our best Air Canada deals on California to Porto flight tickets

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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

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

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