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 35% 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.

How long does it take to fly to Porto?

Flight times from California to Porto vary, but if you’re flying out of Los Angeles and flying into Porto (one of the most popular routes), then the duration is 12h 45m on average. Another popular route from California to Porto is flying from Santa Ana to Porto, which will take roughly 13h 05m. 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, SWISS, and Lufthansa are the most popular carriers operating 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 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.

$309 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.

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

16h 00m1 stop Kastrup Copenhagen

12:00 pm - 2:50 pmOPO Porto-SFO San Francisco

34h 50m1 stop Kastrup Copenhagen

$629Scandinavian Airlines

Sat, Nov 14 - Sat, Nov 21

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

34h 20m1 stop Kastrup Copenhagen

5:35 pm - 2:50 pmOPO Porto-SFO San Francisco

29h 15m1 stop Kastrup Copenhagen

$634Scandinavian Airlines

Mon, Nov 30 - Sun, Dec 6

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

31h 50m1 stop Zurich

6:00 am - 11:05 amOPO Porto-SFO San Francisco

37h 05m2 stops Frankfurt am Main Toronto Pearson Intl

$731Multiple Airlines

Sun, Nov 29 - Wed, Dec 16

8:25 am - 12:05 pmSFO San Francisco-OPO Porto

19h 40m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National

6:00 am - 11:05 amOPO Porto-SFO San Francisco

37h 05m2 stops Frankfurt am Main Toronto Pearson Intl

$734Multiple Airlines

Sun, Nov 29 - Wed, Dec 16

9:10 am - 8:15 amSFO San Francisco-OPO Porto

15h 05m1 stop New York John F Kennedy Intl

11:15 am - 11:45 amOPO Porto-SFO San Francisco

32h 30m1 stop Amsterdam Schiphol

$744Delta

Wed, Dec 2 - Tue, Dec 8

7:00 am - 8:15 amSFO San Francisco-OPO Porto

17h 15m1 stop New York John F Kennedy Intl

11:15 am - 11:45 amOPO Porto-SFO San Francisco

32h 30m1 stop Amsterdam Schiphol

$744Delta

Wed, Dec 2 - Thu, Dec 10

1:59 pm - 9:30 amBUR Burbank Bob Hope-OPO Porto

35h 31m3 stops San Francisco Washington, D.C. Dulles Intl Newark

12:35 pm - 8:39 amOPO Porto-BUR Burbank Bob Hope

28h 04m2 stops Frankfurt am Main San Francisco

$746United Airlines

Mon, Dec 7 - Fri, Dec 11

5:45 am - 9:30 amONT Ontario-OPO Porto

19h 45m2 stops Houston George Bush Intcntl Newark

6:00 am - 8:29 pmOPO Porto-ONT Ontario

22h 29m2 stops Frankfurt am Main San Francisco

$746United Airlines

Sun, Dec 6 - Thu, Dec 10

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

31h 50m1 stop Zurich

7:20 pm - 4:30 pmOPO Porto-SFO San Francisco

29h 10m1 stop Zurich

$748SWISS

Sun, Nov 29 - Mon, Dec 7

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

$748SWISS

Mon, Nov 30 - Mon, Dec 7

Cheap last minute flights

Enter your travel dates to find the best prices.

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

19h 55m1 stop Lisbon Humberto Delgado

5:05 am - 2:35 pmOPO Porto-SFO San Francisco

17h 30m1 stop Lisbon Humberto Delgado

$942TAP AIR PORTUGAL

Thu, Aug 27 - Wed, Sep 9

4:40 pm - 3:15 pmLAX Los Angeles-OPO Porto

14h 35m1 stop Lisbon Humberto Delgado

9:15 pm - 2:40 pmOPO Porto-LAX Los Angeles

25h 25m1 stop Lisbon Humberto Delgado

$951TAP AIR PORTUGAL

Sun, Aug 30 - Fri, Sep 18

4:30 pm - 6:55 pmSFO San Francisco-OPO Porto

18h 25m1 stop Lisbon Humberto Delgado

9:15 pm - 9:55 pmOPO Porto-SFO San Francisco

32h 40m3 stops Lisbon Humberto Delgado Halifax Intl Calgary

$954Multiple Airlines

Thu, Aug 27 - Wed, Sep 9

7:45 pm - 8:50 pmLAX Los Angeles-OPO Porto

17h 05m1 stop Paris Orly

10:30 pm - 8:20 amOPO Porto-LAX Los Angeles

41h 50m2 stops Barcelona-El Prat Casablanca Mohamed V

$994Multiple Airlines

Wed, Aug 26 - Fri, Sep 4

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

17h 50m1 stop Paris Charles de Gaulle

11:25 am - 11:45 amOPO Porto-SFO San Francisco

32h 20m1 stop Amsterdam Schiphol

$1,044Delta

Wed, Aug 26 - Mon, Sep 7

8:55 am - 3:25 pmSFO San Francisco-OPO Porto

22h 30m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

11:25 am - 11:45 amOPO Porto-SFO San Francisco

32h 20m1 stop Amsterdam Schiphol

$1,049Delta

Wed, Aug 26 - Mon, Sep 7

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

14h 45m1 stop Montreal Pierre Elliott Trudeau Intl

11:20 am - 1:17 pmOPO Porto-LAX Los Angeles

33h 57m2 stops Montreal Pierre Elliott Trudeau Intl Denver Intl

$1,068Air Canada

Wed, Aug 26 - Wed, Sep 2

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

24h 30m1 stop Montreal Pierre Elliott Trudeau Intl

12:15 pm - 11:23 amOPO Porto-LAX Los Angeles

31h 08m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,068Air Canada

Sun, Aug 30 - Tue, Sep 15

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

14h 45m1 stop Montreal Pierre Elliott Trudeau Intl

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

18h 20m1 stop Frankfurt am Main

$1,070United Airlines

Wed, Aug 26 - Fri, Sep 4

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

14h 45m1 stop Montreal Pierre Elliott Trudeau Intl

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

18h 20m1 stop Frankfurt am Main

$1,070United Airlines

Wed, Aug 26 - Thu, Sep 3

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Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets

Scandinavian Airlines

Nov 14

SFO4:45 pmSan Francisco

16h 00m

1 stop

OPO4:45 pmPorto

Nov 21

OPO12:00 pmPorto

34h 50m

1 stop

SFO2:50 pmSan Francisco

$629

Scandinavian Airlines

Oct 26

SFO5:45 pmSan Francisco

34h 20m

1 stop

OPO11:05 amPorto

Nov 6

OPO5:45 pmPorto

29h 05m

1 stop

SFO2:50 pmSan Francisco

$633

Scandinavian Airlines

Nov 30

SFO4:45 pmSan Francisco

34h 20m

1 stop

OPO11:05 amPorto

Dec 6

OPO5:35 pmPorto

29h 15m

1 stop

SFO2:50 pmSan Francisco

$634

British Airways flights from California to Porto

Our best British Airways deals on California to Porto flight tickets

British Airways

Sep 5

SAN7:40 pmSan Diego

17h 00m

1 stop

OPO8:40 pmPorto

Sep 23

OPO8:20 amPorto

21h 10m

2 stops

SAN9:30 pmSan Diego

$1,160

British Airways

Sep 5

SAN7:40 pmSan Diego

17h 00m

1 stop

OPO8:40 pmPorto

Sep 23

OPO8:20 pmPorto

29h 30m

1 stop

SAN5:50 pmSan Diego

$1,196

British Airways

Sep 4

SJC2:30 pmSan Jose

46h 10m

2 stops

OPO8:40 pmPorto

Sep 9

OPO12:25 pmPorto

30h 28m

2 stops

SJC10:53 amSan Jose

$1,591

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 11/14

4:45 pm-4:45 pm

1 stop16h 00m

Porto

Sat 11/21

12:00 pm-2:50 pm

1 stop34h 50m

$629

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/30

4:45 pm-11:05 am

1 stop34h 20m

Porto

Sun 12/6

5:35 pm-2:50 pm

1 stop29h 15m

$634

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 11/29

7:25 pm-11:15 am

1 stop31h 50m

Porto

Wed 12/16

6:00 am-11:05 am

2 stops37h 05m

$731

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 11/29

8:25 am-12:05 pm

2 stops19h 40m

Porto

Wed 12/16

6:00 am-11:05 am

2 stops37h 05m

$734

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 12/2

9:10 am-8:15 am

1 stop15h 05m

Porto

Tue 12/8

11:15 am-11:45 am

1 stop32h 30m

$744

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 12/2

7:00 am-8:15 am

1 stop17h 15m

Porto

Thu 12/10

11:15 am-11:45 am

1 stop32h 30m

$744

BurbankPorto

BUR Burbank Bob Hope - OPO Porto

BUROPO

Burbank Bob Hope

Mon 12/7

1:59 pm-9:30 am

3 stops35h 31m

Porto

Fri 12/11

12:35 pm-8:39 am

2 stops28h 04m

$746

Quickest round-trip

OntarioPorto

ONT Ontario - OPO Porto

ONTOPO

Ontario

Sun 12/6

5:45 am-9:30 am

2 stops19h 45m

Porto

Thu 12/10

6:00 am-8:29 pm

2 stops22h 29m

$746

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 11/29

7:25 pm-11:15 am

1 stop31h 50m

Porto

Mon 12/7

7:20 pm-4:30 pm

1 stop29h 10m

$748

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/30

7:25 pm-11:15 am

1 stop31h 50m

Porto

Mon 12/7

12:05 pm-4:30 pm

1 stop36h 25m

$748

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 $853 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 3% 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	$309
Fastest flight time	12h 45m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $309. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $629.

The fastest flight from California to Porto takes 12h 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 August 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
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,374 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom $476	Free Cancellation	Rating 7.8 1,565 reviews	Search KLM flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 1,964 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,530 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,217 reviews	Search Lufthansa flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,258 reviews	Search Iberia flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,121 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,053 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,479 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,529 reviews	Search Air Canada flights

Vila Nova de Gaia

Coimbra

Aveiro

Braga

Pinhao

Matosinhos

Esposende

Chaves

Arcos de Valdevez

Viseu

Espinho

Guimarães

Lamego

Ponte de Lima

Mesao Frio

Penafiel

Caminha

Baiao

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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Faro Airport

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Azores Airport

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Cheap flights from California to Porto from $309

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 10/14. 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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Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets

British Airways flights from California to Porto

Our best British Airways 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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