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.

How long does it take to fly to Porto?

Flight times from California to Porto vary, but if you’re flying out of Santa Ana and flying into Porto (one of the most popular routes), then the duration is 12h 48m on average. Another popular route from California to Porto is flying from Los Angeles to Porto, which will take roughly 14h 35m. Keep in mind that layovers or delays could extend your travel time.

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

LEVEL, United Airlines, and Delta 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 September 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.

$290 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.

11:10 am - 6:50 amSFO San Francisco-OPO Porto

35h 40m1 stop Montreal Pierre Elliott Trudeau Intl

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

36h 25m1 stop Zurich

$576Multiple Airlines

Sun, Oct 18 - Tue, Nov 3

6:15 am - 7:40 amSAN San Diego-OPO Porto

17h 25m2 stops Dallas/Fort Worth Madrid Barajas

8:20 am - 11:47 pmOPO Porto-SAN San Diego

23h 27m2 stops Madrid Barajas Chicago O'Hare Intl

$592Iberia

Sun, Nov 15 - Wed, Nov 25

3:07 pm - 4:00 pmSAN San Diego-OPO Porto

16h 53m2 stops Dallas/Fort Worth Madrid Barajas

8:20 am - 7:15 pmOPO Porto-SAN San Diego

18h 55m2 stops Madrid Barajas Chicago O'Hare Intl

$602American Airlines

Mon, Oct 19 - Wed, Nov 4

10:30 pm - 9:30 amSAN San Diego-OPO Porto

27h 00m2 stops Chicago O'Hare Intl Newark

12:35 pm - 9:22 pmOPO Porto-SAN San Diego

16h 47m1 stop Newark

$609United Airlines

Sun, Nov 15 - Wed, Nov 25

11:59 pm - 9:30 amSFO San Francisco-OPO Porto

25h 31m1 stop Newark

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

15h 35m1 stop Frankfurt am Main

$613United Airlines

Mon, Nov 2 - Tue, Nov 17

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

$624SWISS

Sun, Jan 31 - Tue, Feb 16

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

$624SWISS

Wed, Feb 3 - Mon, Feb 15

8:00 am - 10:35 amSAN San Diego-OPO Porto

19h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:00 am - 12:10 pmOPO Porto-SAN San Diego

15h 10m1 stop Amsterdam Schiphol

$629Delta

Tue, Oct 27 - Tue, Nov 3

6:00 am - 10:35 amSFO San Francisco-OPO Porto

20h 35m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

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

14h 45m1 stop Amsterdam Schiphol

$629Delta

Mon, Nov 2 - Tue, Nov 17

7:00 am - 7:40 amONT Ontario-OPO Porto

16h 40m2 stops Dallas/Fort Worth Madrid Barajas

8:40 pm - 9:40 amOPO Porto-ONT Ontario

21h 00m2 stops Madrid Barajas Dallas/Fort Worth

$765Iberia

Sun, Nov 1 - Mon, Nov 16

Cheap last minute flights

Enter your travel dates to find the best prices.

8:30 pm - 10:35 pmSFO San Francisco-OPO Porto

18h 05m1 stop Paris Orly

2:40 pm - 2:30 pmOPO Porto-SFO San Francisco

31h 50m2 stops Madrid Barajas Lisbon Humberto Delgado

$925Multiple Airlines

Mon, Sep 14 - Wed, Sep 23

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

24h 10m1 stop Lisbon Humberto Delgado

10:30 pm - 2:30 pmOPO Porto-SFO San Francisco

24h 00m1 stop Lisbon Humberto Delgado

$965TAP AIR PORTUGAL

Mon, Sep 14 - Wed, Sep 23

2:05 pm - 9:45 amSFO San Francisco-OPO Porto

35h 40m1 stop Newark

6:00 am - 8:36 pmOPO Porto-SFO San Francisco

22h 36m2 stops Frankfurt am Main Los Angeles

$984United Airlines

Thu, Sep 17 - Sat, Sep 26

8:30 pm - 12:40 amSFO San Francisco-OPO Porto

20h 10m2 stops Paris Orly Lisbon Humberto Delgado

2:40 pm - 2:30 pmOPO Porto-SFO San Francisco

31h 50m2 stops Madrid Barajas Lisbon Humberto Delgado

$1,015Multiple Airlines

Mon, Sep 14 - Wed, Sep 23

10:30 pm - 7:00 amSAN San Diego-OPO Porto

24h 30m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

11:20 am - 10:41 pmOPO Porto-SAN San Diego

43h 21m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,045Air Canada

Tue, Sep 15 - Wed, Sep 30

12:52 pm - 3:25 pmSAN San Diego-OPO Porto

18h 33m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:00 am - 6:06 pmOPO Porto-SAN San Diego

21h 06m2 stops Amsterdam Schiphol Salt Lake City

$1,058Delta

Tue, Sep 15 - Wed, Sep 30

11:30 am - 3:25 pmSAN San Diego-OPO Porto

19h 55m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

5:00 am - 6:06 pmOPO Porto-SAN San Diego

21h 06m2 stops Amsterdam Schiphol Salt Lake City

$1,058Delta

Tue, Sep 15 - Wed, Sep 30

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

24h 30m1 stop Montreal Pierre Elliott Trudeau Intl

6:00 am - 1:35 pmOPO Porto-LAX Los Angeles

39h 35m2 stops Frankfurt am Main Vancouver Intl

$1,070Air Canada

Mon, Sep 14 - Fri, Sep 25

12:45 am - 6:55 amSFO San Francisco-OPO Porto

22h 10m2 stops Houston George Bush Intcntl Newark

6:00 am - 8:36 pmOPO Porto-SFO San Francisco

22h 36m2 stops Frankfurt am Main Los Angeles

$1,081United Airlines

Wed, Sep 16 - Sat, Sep 26

7:35 pm - 8:25 pmSFO San Francisco-OPO Porto

16h 50m1 stop Lisbon Humberto Delgado

7:00 am - 2:05 pmOPO Porto-SFO San Francisco

15h 05m1 stop Lisbon Humberto Delgado

$1,186TAP AIR PORTUGAL

Sat, Sep 12 - Mon, Sep 28

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from California to Porto

Our best United Airlines deals on California to Porto flight tickets

United Airlines

Nov 15

SAN10:30 pmSan Diego

27h 00m

2 stops

OPO9:30 amPorto

Nov 25

OPO12:35 pmPorto

16h 47m

1 stop

SAN9:22 pmSan Diego

$609

United Airlines

Nov 2

SFO11:59 pmSan Francisco

25h 31m

1 stop

OPO9:30 amPorto

Nov 17

OPO12:35 pmPorto

15h 35m

1 stop

SFO8:10 pmSan Francisco

$613

United Airlines

Nov 10

SFO7:15 amSan Francisco

18h 15m

2 stops

OPO9:30 amPorto

Nov 17

OPO12:35 pmPorto

15h 35m

1 stop

SFO8:10 pmSan Francisco

$616

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

Iberia

Nov 15

SAN6:15 amSan Diego

17h 25m

2 stops

OPO7:40 amPorto

Nov 25

OPO8:20 amPorto

23h 27m

2 stops

SAN11:47 pmSan Diego

$592

Iberia

Oct 19

SAN7:40 pmSan Diego

28h 00m

2 stops

OPO7:40 amPorto

Nov 4

OPO8:20 amPorto

18h 55m

2 stops

SAN7:15 pmSan Diego

$605

Iberia

Nov 2

SFO8:47 amSan Francisco

18h 58m

2 stops

OPO11:45 amPorto

Nov 17

OPO8:20 amPorto

21h 36m

2 stops

SFO9:56 pmSan Francisco

$611

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 10/18

11:10 am-6:50 am

1 stop35h 40m

Porto

Tue 11/3

12:05 pm-4:30 pm

1 stop36h 25m

$576

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Sun 11/15

6:15 am-7:40 am

2 stops17h 25m

Porto

Wed 11/25

8:20 am-11:47 pm

2 stops23h 27m

$592

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Mon 10/19

3:07 pm-4:00 pm

2 stops16h 53m

Porto

Wed 11/4

8:20 am-7:15 pm

2 stops18h 55m

$602

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Sun 11/15

10:30 pm-9:30 am

2 stops27h 00m

Porto

Wed 11/25

12:35 pm-9:22 pm

1 stop16h 47m

$609

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/2

11:59 pm-9:30 am

1 stop25h 31m

Porto

Tue 11/17

12:35 pm-8:10 pm

1 stop15h 35m

$613

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 1/31

7:25 pm-11:15 am

1 stop31h 50m

Porto

Tue 2/16

12:05 pm-4:30 pm

1 stop36h 25m

$624

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 2/3

7:25 pm-11:15 am

1 stop31h 50m

Porto

Mon 2/15

12:05 pm-4:30 pm

1 stop36h 25m

$624

Quickest round-trip

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Tue 10/27

8:00 am-10:35 am

2 stops19h 35m

Porto

Tue 11/3

5:00 am-12:10 pm

1 stop15h 10m

$629

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/2

6:00 am-10:35 am

2 stops20h 35m

Porto

Tue 11/17

5:00 am-11:45 am

1 stop14h 45m

$629

OntarioPorto

ONT Ontario - OPO Porto

ONTOPO

Ontario

Sun 11/1

7:00 am-7:40 am

2 stops16h 40m

Porto

Mon 11/16

8:40 pm-9:40 am

2 stops21h 00m

$765

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 $635. 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 $850 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 $781 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	$290
Fastest flight time	12h 48m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $290. 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 12h 48m

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 September 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 2,386 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $460	Free Cancellation	Rating 7.4 1,984 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $476	Free Cancellation	Rating 7.8 1,576 reviews	Search KLM flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,563 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,220 reviews	Search Lufthansa flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,249 reviews	Search Iberia flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,206 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,068 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,473 reviews	Search Turkish Airlines flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,617 reviews	Search Air Canada flights

Coimbra

Vila Nova de Gaia

Aveiro

Braga

Pinhao

Matosinhos

Esposende

Chaves

Arcos de Valdevez

Viseu

Espinho

Guimarães

Lamego

Ponte de Lima

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sun 10/11

Sun 10/18

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Nearby airports

Airlines

Cabin classes

Other Portugal destinations

Other flights from California

Complete your trip

Feeling lucky

Airports servicing Portugal

Faro Airport

Lisbon Humberto Delgado Airport

Azores Airport

Madeira Airport

Algarve Airport

Cheap flights from California to Porto from $290

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 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from California to Porto

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

United Airlines flights from California to Porto

Our best United Airlines deals on California to Porto flight tickets

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from California to Porto that are best for you.

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

Fly to other destinations from California

According to popular flight searches on momondo this year

Complete your trip to Porto

Explore popular destinations other users love

According to popular flight searches on momondo this year