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

Iberia, KLM, and United Airlines 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 San Francisco and flying into Porto (one of the most popular routes), then the duration is 14h 25m on average. Another popular route from California to Porto is flying from Los Angeles to Porto, which will take roughly 14h 55m. 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 36% 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 November 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.

$319 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

$576Royal Air Maroc

Fri, Dec 4 - Thu, Dec 10

4:45 pm - 11:05 amSFO San Francisco-OPO Porto

34h 20m1 stop Kastrup Copenhagen

11:55 am - 2:50 pmOPO Porto-SFO San Francisco

34h 55m1 stop Kastrup Copenhagen

$579Scandinavian Airlines

Mon, Mar 1 - Wed, Mar 10

4:45 pm - 11:05 amSFO San Francisco-OPO Porto

34h 20m1 stop Kastrup Copenhagen

11:55 am - 2:50 pmOPO Porto-SFO San Francisco

34h 55m1 stop Kastrup Copenhagen

$580Scandinavian Airlines

Mon, Mar 1 - Wed, Mar 10

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

$586Royal Air Maroc

Fri, Feb 5 - Sat, Feb 13

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

$680SWISS

Mon, Mar 1 - Mon, Mar 8

7:35 pm - 6:30 pmLAX Los Angeles-OPO Porto

14h 55m1 stop Zurich

8:40 am - 4:30 pmOPO Porto-LAX Los Angeles

15h 50m1 stop Zurich

$696SWISS

Wed, Apr 7 - Wed, Apr 28

8:05 pm - 11:25 pmSFO San Francisco-OPO Porto

19h 20m1 stop Munich Franz Josef Strauss

11:05 am - 6:15 pmOPO Porto-SFO San Francisco

15h 10m1 stop Munich Franz Josef Strauss

$701Lufthansa

Tue, Apr 20 - Tue, Apr 27

5:10 pm - 10:00 pmLAX Los Angeles-OPO Porto

20h 50m1 stop Lisbon Humberto Delgado

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

18h 15m1 stop Lisbon Humberto Delgado

$716TAP AIR PORTUGAL

Tue, Dec 1 - Tue, Dec 15

5:10 pm - 12:30 amLAX Los Angeles-OPO Porto

23h 20m1 stop Lisbon Humberto Delgado

4:00 pm - 3:15 pmOPO Porto-LAX Los Angeles

31h 15m1 stop Lisbon Humberto Delgado

$718TAP AIR PORTUGAL

Thu, Dec 10 - Mon, Dec 14

11:00 am - 10:25 pmSAN San Diego-OPO Porto

28h 25m2 stops Los Angeles Frankfurt am Main

6:20 am - 3:25 pmOPO Porto-SAN San Diego

17h 05m1 stop Munich Franz Josef Strauss

$736Lufthansa

Mon, Mar 15 - Wed, Apr 28

Cheap last minute flights

Enter your travel dates to find the best prices.

9:05 pm - 10:00 pmLAX Los Angeles-OPO Porto

16h 55m1 stop Paris Charles de Gaulle

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

14h 45m1 stop Amsterdam Schiphol

$830KLM

Mon, Nov 16 - Tue, Nov 24

5:15 pm - 10:00 pmLAX Los Angeles-OPO Porto

20h 45m1 stop Paris Charles de Gaulle

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

32h 30m1 stop Amsterdam Schiphol

$830Delta

Mon, Nov 16 - Mon, Nov 23

3:20 pm - 9:55 pmLAX Los Angeles-OPO Porto

22h 35m1 stop Paris Charles de Gaulle

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

32h 30m1 stop Amsterdam Schiphol

$830Delta

Sun, Nov 15 - Mon, Nov 23

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

22h 40m1 stop Paris Charles de Gaulle

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

14h 45m1 stop Amsterdam Schiphol

$830Multiple Airlines

Tue, Nov 17 - Tue, Nov 24

7:00 pm - 10:00 pmLAX Los Angeles-OPO Porto

19h 00m1 stop Paris Charles de Gaulle

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

27h 35m1 stop Amsterdam Schiphol

$830Multiple Airlines

Tue, Nov 17 - Mon, Nov 23

6:50 am - 3:10 pmSAN San Diego-OPO Porto

24h 20m2 stops Chicago O'Hare Intl Frankfurt am Main

6:00 am - 4:25 pmOPO Porto-SAN San Diego

18h 25m2 stops Frankfurt am Main Vancouver Intl

$834Lufthansa

Tue, Nov 17 - Wed, Nov 25

6:35 am - 9:30 amSAN San Diego-OPO Porto

18h 55m1 stop Newark

12:35 pm - 9:29 amOPO Porto-SAN San Diego

28h 54m2 stops Frankfurt am Main Chicago O'Hare Intl

$839United Airlines

Tue, Nov 17 - Wed, Nov 25

9:40 am - 10:30 amLAX Los Angeles-OPO Porto

16h 50m2 stops Portland Amsterdam Schiphol

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

27h 35m1 stop Amsterdam Schiphol

$839KLM

Mon, Nov 16 - Mon, Nov 23

5:00 am - 9:30 amFAT Fresno Airterminal-OPO Porto

20h 30m2 stops Denver Intl Newark

6:00 am - 11:44 pmOPO Porto-FAT Fresno Airterminal

25h 44m2 stops Frankfurt am Main San Francisco

$843United Airlines

Sun, Nov 15 - Thu, Dec 3

7:30 pm - 11:15 amLAX Los Angeles-OPO Porto

31h 45m1 stop Zurich

12:05 pm - 4:35 pmOPO Porto-LAX Los Angeles

36h 30m1 stop Zurich

$860SWISS

Tue, Nov 17 - Sun, Nov 22

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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

Dec 4

LAX9:20 amLos Angeles

16h 55m

1 stop

OPO10:15 amPorto

Dec 10

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$576

Royal Air Maroc

Feb 5

LAX9:20 amLos Angeles

16h 55m

1 stop

OPO10:15 amPorto

Feb 13

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$586

Royal Air Maroc

Nov 27

LAX9:20 amLos Angeles

16h 55m

1 stop

OPO10:15 amPorto

Dec 10

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$606

Lufthansa flights from California to Porto

Our best Lufthansa deals on California to Porto flight tickets

Lufthansa

Apr 20

SFO8:05 pmSan Francisco

19h 20m

1 stop

OPO11:25 pmPorto

Apr 27

OPO11:05 amPorto

15h 10m

1 stop

SFO6:15 pmSan Francisco

$701

Lufthansa

Apr 7

LAX8:30 amLos Angeles

17h 50m

2 stops

OPO10:20 amPorto

Apr 21

OPO6:00 amPorto

22h 48m

2 stops

LAX8:48 pmLos Angeles

$731

Lufthansa

Mar 15

SAN11:00 amSan Diego

28h 25m

2 stops

OPO10:25 pmPorto

Apr 28

OPO6:20 amPorto

17h 05m

1 stop

SAN3:25 pmSan Diego

$736

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 12/4

9:20 am-10:15 am

1 stop16h 55m

Porto

Thu 12/10

11:15 am-7:20 am

1 stop28h 05m

$576

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 3/1

4:45 pm-11:05 am

1 stop34h 20m

Porto

Wed 3/10

11:55 am-2:50 pm

1 stop34h 55m

$579

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 3/1

4:45 pm-11:05 am

1 stop34h 20m

Porto

Wed 3/10

11:55 am-2:50 pm

1 stop34h 55m

$580

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 2/5

9:20 am-10:15 am

1 stop16h 55m

Porto

Sat 2/13

11:15 am-7:20 am

1 stop28h 05m

$586

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 3/1

7:25 pm-11:15 am

1 stop31h 50m

Porto

Mon 3/8

12:05 pm-4:30 pm

1 stop36h 25m

$680

Quickest round-trip

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Wed 4/7

7:35 pm-6:30 pm

1 stop14h 55m

Porto

Wed 4/28

8:40 am-4:30 pm

1 stop15h 50m

$696

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 4/20

8:05 pm-11:25 pm

1 stop19h 20m

Porto

Tue 4/27

11:05 am-6:15 pm

1 stop15h 10m

$701

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Tue 12/1

5:10 pm-10:00 pm

1 stop20h 50m

Porto

Tue 12/15

5:00 am-3:15 pm

1 stop18h 15m

$716

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Thu 12/10

5:10 pm-12:30 am

1 stop23h 20m

Porto

Mon 12/14

4:00 pm-3:15 pm

1 stop31h 15m

$718

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Mon 3/15

11:00 am-10:25 pm

2 stops28h 25m

Porto

Wed 4/28

6:20 am-3:25 pm

1 stop17h 05m

$736

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 January is, on average, the cheapest month to fly to Porto from California, with most prices found around $690. If you aren’t able to travel during the month of January, then book flights to Porto from California during February instead. Flights to Porto in February, while not as cheap as those in January, still average around $708.

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 $892 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 $804 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 34% 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	$319
Fastest flight time	14h 25m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $319. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $576.

The fastest flight from California to Porto takes 14h 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 November 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 1,597 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,396 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $460	Free Cancellation	Rating 7.5 2,034 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.3 10,494 reviews	Search United Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,717 reviews	Search Delta flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,119 reviews	Search SWISS flights
Lufthansa	PriceFrom $625	Free Cancellation	Rating 6.8 8,295 reviews	Search Lufthansa flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,465 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $681	Free Cancellation	Rating 7.0 3,227 reviews	Search Iberia flights
Air Canada	PriceFrom $765	Free Cancellation	Rating 7.1 11,898 reviews	Search Air Canada flights

Braga

Coimbra

Vila Nova de Gaia

Aveiro

Pinhao

Esposende

Matosinhos

Chaves

Viseu

Espinho

Arcos de Valdevez

Lamego

Guimarães

Caminha

Penafiel

Ponte de Lima

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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Azores Airport

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Cheap flights from California to Porto from $319

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 11/28. 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

Lufthansa flights from California to Porto

Our best Lufthansa 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.

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

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