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

KLM, United Airlines, and Delta 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 13h 45m 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 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.

$208 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.

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

15h 50m1 stop Lisbon Humberto Delgado

7:00 am - 3:15 pmOPO Porto-LAX Los Angeles

16h 15m1 stop Lisbon Humberto Delgado

$568TAP AIR PORTUGAL

Tue, Nov 10 - Tue, Nov 24

5:10 pm - 3:00 pmLAX Los Angeles-OPO Porto

13h 50m1 stop Lisbon Humberto Delgado

6:00 pm - 3:15 pmOPO Porto-LAX Los Angeles

29h 15m1 stop Lisbon Humberto Delgado

$568TAP AIR PORTUGAL

Tue, Nov 10 - Mon, Nov 23

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

$581Royal Air Maroc

Fri, Jan 29 - Sat, Feb 6

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

$582Royal Air Maroc

Fri, Jan 15 - Sat, Jan 23

4:45 pm - 12:05 pmSFO San Francisco-OPO Porto

35h 20m1 stop Kastrup Copenhagen

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

34h 55m1 stop Kastrup Copenhagen

$674Scandinavian Airlines

Sat, Jan 16 - Wed, Feb 10

4:45 pm - 4:45 pmSFO San Francisco-OPO Porto

16h 00m1 stop Kastrup Copenhagen

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

34h 55m1 stop Kastrup Copenhagen

$690Scandinavian Airlines

Sat, Jan 9 - Wed, Feb 17

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

$693SWISS

Wed, Apr 14 - Wed, Apr 21

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

15h 00m1 stop Zurich

7:20 pm - 4:35 pmOPO Porto-LAX Los Angeles

29h 15m1 stop Zurich

$697SWISS

Mon, Mar 1 - Wed, Mar 10

5:15 pm - 11:25 pmSAN San Diego-OPO Porto

22h 10m1 stop Munich Franz Josef Strauss

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

17h 05m1 stop Munich Franz Josef Strauss

$704Lufthansa

Sun, Apr 18 - Tue, Apr 27

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

19h 20m1 stop Munich Franz Josef Strauss

6:20 am - 6:15 pmOPO Porto-SFO San Francisco

19h 55m1 stop Munich Franz Josef Strauss

$704Lufthansa

Tue, Apr 13 - Tue, Apr 20

Cheap last minute flights

Enter your travel dates to find the best prices.

5:10 pm - 7:00 pmLAX Los Angeles-OPO Porto

17h 50m1 stop Lisbon Humberto Delgado

7:00 am - 3:15 pmOPO Porto-LAX Los Angeles

16h 15m1 stop Lisbon Humberto Delgado

$541TAP AIR PORTUGAL

Tue, Nov 3 - Thu, Nov 26

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

23h 20m1 stop Lisbon Humberto Delgado

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

18h 15m1 stop Lisbon Humberto Delgado

$542TAP AIR PORTUGAL

Thu, Nov 5 - Thu, Nov 12

4:45 pm - 5:05 pmSFO San Francisco-OPO Porto

16h 20m1 stop Kastrup Copenhagen

5:55 pm - 2:50 pmOPO Porto-SFO San Francisco

28h 55m1 stop Kastrup Copenhagen

$744Scandinavian Airlines

Wed, Nov 4 - Thu, Nov 12

4:45 pm - 5:05 pmSFO San Francisco-OPO Porto

16h 20m1 stop Kastrup Copenhagen

5:45 pm - 2:50 pmOPO Porto-SFO San Francisco

29h 05m1 stop Kastrup Copenhagen

$744Scandinavian Airlines

Wed, Nov 4 - Fri, Nov 13

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

31h 45m1 stop Zurich

6:00 am - 9:34 pmOPO Porto-LAX Los Angeles

23h 34m2 stops Frankfurt am Main Toronto Pearson Intl

$823Multiple Airlines

Tue, Nov 3 - Thu, Nov 26

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

31h 45m1 stop Zurich

6:00 am - 9:34 pmOPO Porto-LAX Los Angeles

23h 34m2 stops Frankfurt am Main Toronto Pearson Intl

$824Multiple Airlines

Tue, Nov 3 - Thu, Nov 26

7:00 am - 9:30 amSFO San Francisco-OPO Porto

18h 30m1 stop Newark

12:35 pm - 8:10 pmOPO Porto-SFO San Francisco

15h 35m1 stop Frankfurt am Main

$829United Airlines

Mon, Nov 2 - Fri, Nov 13

12:05 pm - 9:30 amSFO San Francisco-OPO Porto

13h 25m1 stop Newark

6:00 am - 8:10 pmOPO Porto-SFO San Francisco

22h 10m1 stop Frankfurt am Main

$829United Airlines

Mon, Nov 2 - Thu, Nov 12

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

19h 00m1 stop Paris Charles de Gaulle

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

14h 45m1 stop Amsterdam Schiphol

$830Delta

Mon, Nov 2 - Fri, Nov 13

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

19h 00m1 stop Paris Charles de Gaulle

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

32h 30m1 stop Amsterdam Schiphol

$830Delta

Wed, Nov 4 - Wed, Nov 11

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SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets

SWISS

Apr 14

LAX7:35 pmLos Angeles

14h 55m

1 stop

OPO6:30 pmPorto

Apr 21

OPO8:40 amPorto

15h 50m

1 stop

LAX4:30 pmLos Angeles

$693

SWISS

Mar 1

LAX7:30 pmLos Angeles

15h 00m

1 stop

OPO6:30 pmPorto

Mar 10

OPO7:20 pmPorto

29h 15m

1 stop

LAX4:35 pmLos Angeles

$697

SWISS

Jan 25

LAX7:30 pmLos Angeles

31h 45m

1 stop

OPO11:15 amPorto

Feb 10

OPO12:05 pmPorto

36h 30m

1 stop

LAX4:35 pmLos Angeles

$698

Royal Air Maroc flights from California to Porto

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

Royal Air Maroc

Jan 15

LAX9:20 amLos Angeles

16h 55m

1 stop

OPO10:15 amPorto

Jan 23

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$582

Royal Air Maroc

Mar 5

LAX9:20 amLos Angeles

16h 55m

1 stop

OPO10:15 amPorto

Mar 13

OPO11:15 amPorto

28h 05m

1 stop

LAX7:20 amLos Angeles

$583

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

$645

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Tue 11/10

5:10 pm-5:00 pm

1 stop15h 50m

Porto

Tue 11/24

7:00 am-3:15 pm

1 stop16h 15m

$568

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Tue 11/10

5:10 pm-3:00 pm

1 stop13h 50m

Porto

Mon 11/23

6:00 pm-3:15 pm

1 stop29h 15m

$568

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 1/29

9:20 am-10:15 am

1 stop16h 55m

Porto

Sat 2/6

11:15 am-7:20 am

1 stop28h 05m

$581

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 1/15

9:20 am-10:15 am

1 stop16h 55m

Porto

Sat 1/23

11:15 am-7:20 am

1 stop28h 05m

$582

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 1/16

4:45 pm-12:05 pm

1 stop35h 20m

Porto

Wed 2/10

11:55 am-2:50 pm

1 stop34h 55m

$674

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 1/9

4:45 pm-4:45 pm

1 stop16h 00m

Porto

Wed 2/17

11:55 am-2:50 pm

1 stop34h 55m

$690

Quickest round-trip

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Wed 4/14

7:35 pm-6:30 pm

1 stop14h 55m

Porto

Wed 4/21

8:40 am-4:30 pm

1 stop15h 50m

$693

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Mon 3/1

7:30 pm-6:30 pm

1 stop15h 00m

Porto

Wed 3/10

7:20 pm-4:35 pm

1 stop29h 15m

$697

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Sun 4/18

5:15 pm-11:25 pm

1 stop22h 10m

Porto

Tue 4/27

6:20 am-3:25 pm

1 stop17h 05m

$704

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 4/13

8:05 pm-11:25 pm

1 stop19h 20m

Porto

Tue 4/20

6:20 am-6:15 pm

1 stop19h 55m

$704

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 $675. If you aren’t able to travel during the month of February, then book flights to Porto from California during April instead. Flights to Porto in April, while not as cheap as those in February, still average around $717.

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 $873 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 2% 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	$208
Fastest flight time	13h 45m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $208. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $568.

The fastest flight from California to Porto takes 13h 45m

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 1,595 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,391 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $460	Free Cancellation	Rating 7.4 2,031 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom $508	Free Cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,698 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,299 reviews	Search Lufthansa flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,113 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,461 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $681	Free Cancellation	Rating 7.0 3,243 reviews	Search Iberia flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,835 reviews	Search Air Canada flights

Braga

Coimbra

Vila Nova de Gaia

Aveiro

Pinhao

Matosinhos

Esposende

Chaves

Viseu

Espinho

Arcos de Valdevez

Guimarães

Lamego

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 $208

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 11/14. 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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SWISS flights from California to Porto

Our best SWISS deals on California to Porto flight tickets

Royal Air Maroc flights from California to Porto

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

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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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