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

SWISS, Air France, 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 Diego 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 50m. 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.

$312 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 - 7:30 amSFO San Francisco-OPO Porto

28h 55m1 stop Lisbon Humberto Delgado

7:00 am - 4:05 pmOPO Porto-SFO San Francisco

17h 05m1 stop Lisbon Humberto Delgado

$569TAP AIR PORTUGAL

Sat, Oct 24 - Fri, Nov 6

10:20 am - 11:15 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

$573Royal Air Maroc

Fri, Oct 23 - Sat, Nov 7

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

16h 55m1 stop Casablanca Mohamed V

11:15 am - 8:20 amOPO Porto-LAX Los Angeles

28h 05m1 stop Casablanca Mohamed V

$573Royal Air Maroc

Fri, Oct 23 - Sat, Oct 31

7:35 pm - 10:00 pmSFO San Francisco-OPO Porto

19h 25m1 stop Lisbon Humberto Delgado

11:00 am - 2:45 pmOPO Porto-SFO San Francisco

35h 45m1 stop Lisbon Humberto Delgado

$600TAP AIR PORTUGAL

Sat, Oct 24 - Fri, Nov 6

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

$623KLM

Mon, Nov 9 - Mon, Nov 16

7:00 am - 10:30 amSFO San Francisco-OPO Porto

19h 30m2 stops New York John F Kennedy Intl Amsterdam Schiphol

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

27h 35m1 stop Amsterdam Schiphol

$638KLM

Mon, Nov 9 - Mon, Nov 16

8:30 am - 12:05 pmLAX Los Angeles-OPO Porto

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

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

23h 34m2 stops Frankfurt am Main Toronto Pearson Intl

$686Air Canada

Mon, Jan 11 - Fri, Jan 15

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

$691SWISS

Sun, Jan 10 - Thu, Jan 14

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

$703SWISS

Wed, Apr 7 - Wed, Apr 21

8:20 am - 6:30 pmLAX Los Angeles-OPO Porto

50h 10m2 stops Montreal Pierre Elliott Trudeau Intl Zurich

6:00 am - 11:34 amOPO Porto-LAX Los Angeles

37h 34m2 stops Frankfurt am Main Vancouver Intl

$718Air Canada

Tue, Apr 6 - Tue, Apr 13

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

$602Royal Air Maroc

Fri, Oct 9 - Thu, Oct 22

10:20 am - 11:15 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

$682Royal Air Maroc

Fri, Oct 9 - Thu, Nov 19

4:55 pm - 12:40 amLAX Los Angeles-OPO Porto

23h 45m1 stop Lisbon Humberto Delgado

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

18h 15m1 stop Lisbon Humberto Delgado

$735TAP AIR PORTUGAL

Sat, Oct 10 - Tue, Nov 17

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

24h 00m1 stop Lisbon Humberto Delgado

8:00 pm - 4:15 pmOPO Porto-LAX Los Angeles

27h 15m1 stop Lisbon Humberto Delgado

$749TAP AIR PORTUGAL

Sun, Oct 11 - Wed, Oct 28

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

17h 25m1 stop Paris Charles de Gaulle

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

14h 45m1 stop Amsterdam Schiphol

$820Delta

Tue, Oct 13 - Thu, Nov 19

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

17h 25m1 stop Paris Charles de Gaulle

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

14h 45m1 stop Amsterdam Schiphol

$820Delta

Tue, Oct 13 - Tue, Nov 17

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

14h 55m1 stop Zurich

12:50 pm - 4:30 pmOPO Porto-LAX Los Angeles

35h 40m1 stop Zurich

$887SWISS

Fri, Oct 9 - Mon, Oct 12

10:30 pm - 7:00 amLAX Los Angeles-OPO Porto

24h 30m1 stop Montreal Pierre Elliott Trudeau Intl

12:30 pm - 1:05 pmOPO Porto-LAX Los Angeles

32h 35m1 stop Frankfurt am Main

$913United Airlines

Mon, Oct 12 - Mon, Nov 16

7:35 pm - 7:55 amLAX Los Angeles-OPO Porto

28h 20m1 stop Zurich

7:20 pm - 5:35 pmOPO Porto-LAX Los Angeles

29h 15m1 stop Zurich

$928SWISS

Tue, Oct 13 - Mon, Oct 26

11:39 pm - 7:00 amSFO San Francisco-OPO Porto

23h 21m1 stop Montreal Pierre Elliott Trudeau Intl

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

15h 35m1 stop Frankfurt am Main

$949United Airlines

Mon, Oct 12 - Tue, Nov 17

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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

Oct 24

SFO7:35 pmSan Francisco

28h 55m

1 stop

OPO7:30 amPorto

Nov 6

OPO7:00 amPorto

17h 05m

1 stop

SFO4:05 pmSan Francisco

$569

TAP AIR PORTUGAL

Oct 24

SFO7:35 pmSan Francisco

19h 25m

1 stop

OPO10:00 pmPorto

Nov 6

OPO11:00 amPorto

35h 45m

1 stop

SFO2:45 pmSan Francisco

$600

TAP AIR PORTUGAL

Oct 24

SFO7:35 pmSan Francisco

14h 25m

1 stop

OPO5:00 pmPorto

Nov 6

OPO8:30 amPorto

15h 35m

1 stop

SFO4:05 pmSan Francisco

$658

Air Canada flights from California to Porto

Our best Air Canada deals on California to Porto flight tickets

Air Canada

Jan 11

LAX8:30 amLos Angeles

19h 35m

2 stops

OPO12:05 pmPorto

Jan 15

OPO6:00 amPorto

23h 34m

2 stops

LAX9:34 pmLos Angeles

$686

Air Canada

Mar 1

LAX8:30 amLos Angeles

19h 35m

2 stops

OPO12:05 pmPorto

Mar 12

OPO6:00 amPorto

41h 28m

2 stops

LAX3:28 pmLos Angeles

$727

Air Canada

Feb 13

SFO4:40 pmSan Francisco

58h 35m

2 stops

OPO11:15 amPorto

Feb 19

OPO6:15 amPorto

23h 05m

2 stops

SFO9:20 pmSan Francisco

$730

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-7:30 am

1 stop28h 55m

Porto

Fri 11/6

7:00 am-4:05 pm

1 stop17h 05m

$569

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 10/23

10:20 am-11:15 am

1 stop16h 55m

Porto

Sat 11/7

11:15 am-7:20 am

1 stop28h 05m

$573

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Fri 10/23

10:20 am-11:15 am

1 stop16h 55m

Porto

Sat 10/31

11:15 am-8:20 am

1 stop28h 05m

$573

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 10/24

7:35 pm-10:00 pm

1 stop19h 25m

Porto

Fri 11/6

11:00 am-2:45 pm

1 stop35h 45m

$600

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/9

3:10 pm-10:00 pm

1 stop22h 50m

Porto

Mon 11/16

4:10 pm-11:45 am

1 stop27h 35m

$623

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/9

7:00 am-10:30 am

2 stops19h 30m

Porto

Mon 11/16

4:10 pm-11:45 am

1 stop27h 35m

$638

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Mon 1/11

8:30 am-12:05 pm

2 stops19h 35m

Porto

Fri 1/15

6:00 am-9:34 pm

2 stops23h 34m

$686

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 1/10

7:25 pm-6:30 pm

1 stop15h 05m

Porto

Thu 1/14

12:05 pm-4:30 pm

1 stop36h 25m

$691

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 4/21

8:40 am-4:30 pm

1 stop15h 50m

$703

Los AngelesPorto

LAX Los Angeles - OPO Porto

LAXOPO

Los Angeles

Tue 4/6

8:20 am-6:30 pm

2 stops50h 10m

Porto

Tue 4/13

6:00 am-11:34 am

2 stops37h 34m

$718

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 $856 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	$312
Fastest flight time	13h 10m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $312. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $569.

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 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 1,580 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,385 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 2,013 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,649 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,269 reviews	Search Lufthansa flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,329 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,097 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,455 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $681	Free Cancellation	Rating 7.0 3,253 reviews	Search Iberia flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,748 reviews	Search Air Canada flights

Coimbra

Vila Nova de Gaia

Braga

Aveiro

Pinhao

Matosinhos

Esposende

Chaves

Viseu

Espinho

Arcos de Valdevez

Guimarães

Lamego

Ponte de Lima

Caminha

Penafiel

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 $312

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 2/14. 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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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

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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