How long does it take to fly to Porto?

Flight times from California to Porto vary, but if you’re flying out of San Francisco and flying into Porto (one of the most popular routes), then the duration is 13h 25m on average. Another popular route from California to Porto is flying from Los Angeles to Porto, which will take roughly 15h. Keep in mind that layovers or delays could extend your travel time.

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

SWISS, Lufthansa, and Air Canada are the most popular carriers operating from California to Porto

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 October 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.

$311 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.

9:20 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

$574Royal Air Maroc

Fri, Feb 12 - Thu, Feb 18

10:20 am - 10:15 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, Mar 19 - Sat, Apr 3

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

15h 25m1 stop Lisbon Humberto Delgado

8:30 am - 4:05 pmOPO Porto-SFO San Francisco

15h 35m1 stop Lisbon Humberto Delgado

$651TAP AIR PORTUGAL

Sat, Oct 24 - Fri, Nov 6

7:35 pm - 10:45 amSFO San Francisco-OPO Porto

32h 10m1 stop Lisbon Humberto Delgado

4:00 pm - 2:45 pmOPO Porto-SFO San Francisco

30h 45m1 stop Lisbon Humberto Delgado

$656TAP AIR PORTUGAL

Sat, Oct 24 - Fri, Nov 6

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

31h 50m1 stop Zurich

12:05 pm - 4:30 pmOPO Porto-SFO San Francisco

36h 25m1 stop Zurich

$668SWISS

Wed, Mar 3 - Wed, Mar 10

7:25 pm - 6:30 pmSFO San Francisco-OPO Porto

15h 05m1 stop Zurich

12:05 pm - 4:30 pmOPO Porto-SFO San Francisco

36h 25m1 stop Zurich

$685SWISS

Mon, Mar 1 - Wed, Mar 10

3:20 pm - 10:00 pmLAX Los Angeles-OPO Porto

22h 40m1 stop Paris Charles de Gaulle

11:15 am - 11:45 amOPO Porto-LAX Los Angeles

32h 30m1 stop Amsterdam Schiphol

$710Delta

Wed, Dec 30 - Thu, Jan 14

6:55 pm - 10:00 pmLAX Los Angeles-OPO Porto

19h 05m1 stop Paris Charles de Gaulle

11:15 am - 11:45 amOPO Porto-LAX Los Angeles

32h 30m1 stop Amsterdam Schiphol

$710Delta

Wed, Dec 30 - Wed, Jan 13

3:10 pm - 10:00 pmSFO San Francisco-OPO Porto

22h 50m1 stop Paris Charles de Gaulle

5:00 am - 11:45 amOPO Porto-SFO San Francisco

14h 45m1 stop Amsterdam Schiphol

$713KLM

Tue, Feb 9 - Thu, Feb 25

3:10 pm - 10:00 pmSFO San Francisco-OPO Porto

22h 50m1 stop Paris Charles de Gaulle

4:10 pm - 11:45 amOPO Porto-SFO San Francisco

27h 35m1 stop Amsterdam Schiphol

$713KLM

Tue, Feb 9 - Tue, Feb 23

Cheap last minute flights

Enter your travel dates to find the best prices.

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

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

$606Royal Air Maroc

Fri, Oct 9 - Thu, Oct 22

4:30 pm - 12:40 amSFO San Francisco-OPO Porto

24h 10m1 stop Lisbon Humberto Delgado

9:15 pm - 1:35 pmOPO Porto-SFO San Francisco

24h 20m1 stop Lisbon Humberto Delgado

$787TAP AIR PORTUGAL

Mon, Oct 5 - Mon, Oct 19

4:30 pm - 8:25 pmSFO San Francisco-OPO Porto

19h 55m1 stop Lisbon Humberto Delgado

10:30 pm - 1:35 pmOPO Porto-SFO San Francisco

23h 05m1 stop Lisbon Humberto Delgado

$787TAP AIR PORTUGAL

Mon, Oct 5 - Mon, Oct 19

7:35 pm - 1:45 pmLAX Los Angeles-OPO Porto

34h 10m2 stops Zurich Geneva Geneve-Cointrin

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

29h 10m1 stop Zurich

$893SWISS

Tue, Oct 6 - Mon, Oct 12

7:35 pm - 11:25 amLAX Los Angeles-OPO Porto

31h 50m1 stop Zurich

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

29h 10m1 stop Zurich

$895SWISS

Wed, Oct 7 - Mon, Oct 12

7:20 am - 10:30 amSAN San Diego-OPO Porto

19h 10m1 stop New York John F Kennedy Intl

7:10 pm - 11:50 amOPO Porto-SAN San Diego

24h 40m1 stop Amsterdam Schiphol

$933KLM

Wed, Oct 7 - Wed, Oct 14

1:40 pm - 3:30 pmSAN San Diego-OPO Porto

17h 50m1 stop Amsterdam Schiphol

7:10 pm - 11:50 amOPO Porto-SAN San Diego

24h 40m1 stop Amsterdam Schiphol

$936KLM

Tue, Oct 6 - Wed, Oct 14

11:31 am - 3:25 pmSAN San Diego-OPO Porto

19h 54m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

5:00 am - 7:14 pmOPO Porto-SAN San Diego

22h 14m2 stops Amsterdam Schiphol Los Angeles

$946Delta

Tue, Oct 6 - Wed, Oct 14

10:57 am - 3:25 pmSAN San Diego-OPO Porto

20h 28m2 stops Los Angeles Paris Charles de Gaulle

5:00 am - 7:36 pmOPO Porto-SAN San Diego

22h 36m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$946Delta

Tue, Oct 6 - Wed, Oct 14

Save money when you book flights with momondo

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Royal Air Maroc flights from California to Porto

Our best Royal Air Maroc deals on California to Porto flight tickets

Royal Air Maroc

Feb 12

LAX9:20 amLos Angeles

16h 55m

1 stop

OPO10:15 amPorto

Feb 18

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$574

Royal Air Maroc

Oct 23

LAX10:20 amLos Angeles

16h 55m

1 stop

OPO11:15 amPorto

Nov 5

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$577

Royal Air Maroc

Oct 16

LAX10:20 amLos Angeles

16h 55m

1 stop

OPO11:15 amPorto

Oct 24

OPO12:15 pmPorto

28h 05m

1 stop

LAX8:20 amLos Angeles

$585

TAP AIR PORTUGAL flights from California to Porto

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

TAP AIR PORTUGAL

Oct 24

SFO7:35 pmSan Francisco

15h 25m

1 stop

OPO6:00 pmPorto

Nov 6

OPO8:30 amPorto

15h 35m

1 stop

SFO4:05 pmSan Francisco

$651

TAP AIR PORTUGAL

Oct 24

SFO7:35 pmSan Francisco

32h 10m

1 stop

OPO10:45 amPorto

Nov 6

OPO4:00 pmPorto

30h 45m

1 stop

SFO2:45 pmSan Francisco

$656

TAP AIR PORTUGAL

Nov 10

LAX5:10 pmLos Angeles

13h 50m

1 stop

OPO3:00 pmPorto

Nov 16

OPO8:00 pmPorto

27h 15m

1 stop

LAX3:15 pmLos Angeles

$733

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 2/12

9:20 am-10:15 am

1 stop16h 55m

Porto

Thu 2/18

11:15 am-7:20 am

1 stop28h 05m

$574

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 3/19

10:20 am-10:15 am

1 stop16h 55m

Porto

Sat 4/3

12:15 pm-8:20 am

1 stop28h 05m

$574

Quickest 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

Fri 11/6

8:30 am-4:05 pm

1 stop15h 35m

$651

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 10/24

7:35 pm-10:45 am

1 stop32h 10m

Porto

Fri 11/6

4:00 pm-2:45 pm

1 stop30h 45m

$656

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 3/3

7:25 pm-11:15 am

1 stop31h 50m

Porto

Wed 3/10

12:05 pm-4:30 pm

1 stop36h 25m

$668

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 3/1

7:25 pm-6:30 pm

1 stop15h 05m

Porto

Wed 3/10

12:05 pm-4:30 pm

1 stop36h 25m

$685

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Wed 12/30

3:20 pm-10:00 pm

1 stop22h 40m

Porto

Thu 1/14

11:15 am-11:45 am

1 stop32h 30m

$710

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Wed 12/30

6:55 pm-10:00 pm

1 stop19h 05m

Porto

Wed 1/13

11:15 am-11:45 am

1 stop32h 30m

$710

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 2/9

3:10 pm-10:00 pm

1 stop22h 50m

Porto

Thu 2/25

5:00 am-11:45 am

1 stop14h 45m

$713

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 2/9

3:10 pm-10:00 pm

1 stop22h 50m

Porto

Tue 2/23

4:10 pm-11:45 am

1 stop27h 35m

$713

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	$311
Fastest flight time	13h 25m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $311. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $574.

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?
As of October 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 1,576 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,383 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 2,006 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,626 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,255 reviews	Search Lufthansa flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,283 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,089 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,456 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $681	Free Cancellation	Rating 7.0 3,255 reviews	Search Iberia flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,717 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.

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Airports servicing Portugal

Faro Airport

Lisbon Humberto Delgado Airport

Azores Airport

Madeira Airport

Algarve Airport

Cheap flights from California to Porto from $311

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 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Royal Air Maroc flights from California to Porto

Our best Royal Air Maroc deals on California to Porto flight tickets

TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL 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

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

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According to popular flight searches on momondo this year

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