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 13h 05m 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 is the cheapest airline that flies from California to Porto?

United Airlines, Air Canada, and Delta are the most popular carriers operating from California to Porto

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 33% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 12 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 July 2026, there are 12 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.

$301 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 - 7:30 pm

SFO

OPO

18h 45m

1 stop

5:55 pm - 2:40 pm

OPO

SFO

28h 45m

1 stop

$616Scandinavian Airlines

Sat, Aug 15 - Fri, Aug 28

4:45 pm - 11:10 am

SFO

OPO

34h 25m

1 stop

5:50 pm - 2:50 pm

OPO

SFO

29h 00m

1 stop

$651Scandinavian Airlines

Thu, Nov 5 - Thu, Nov 19

8:15 pm - 5:00 pm

SFO

OPO

13h 45m

1 stop

7:00 am - 2:45 pm

OPO

SFO

15h 45m

1 stop

$685TAP AIR PORTUGAL

Fri, Oct 30 - Sat, Nov 14

5:35 pm - 3:00 pm

SFO

OPO

14h 25m

1 stop

5:00 am - 2:45 pm

OPO

SFO

17h 45m

1 stop

$687TAP AIR PORTUGAL

Sat, Oct 31 - Mon, Nov 16

7:00 am - 9:05 am

SAN

OPO

18h 05m

1 stop

5:00 am - 12:10 pm

OPO

SAN

15h 10m

1 stop

$743Delta

Sun, Dec 6 - Thu, Dec 24

9:00 am - 9:30 am

ONT

OPO

16h 30m

2 stops

6:00 am - 6:29 pm

OPO

ONT

20h 29m

2 stops

$745United Airlines

Tue, Nov 3 - Thu, Nov 19

3:05 pm - 3:25 pm

SAN

OPO

17h 20m

1 stop

5:00 am - 12:10 pm

OPO

SAN

15h 10m

1 stop

$746Delta

Tue, Oct 27 - Tue, Nov 3

8:45 am - 12:50 pm

SJC

OPO

20h 05m

2 stops

6:00 am - 9:04 pm

OPO

SJC

23h 04m

2 stops

$746Lufthansa

Sun, Nov 1 - Tue, Nov 17

8:00 am - 9:30 am

SAN

OPO

17h 30m

2 stops

6:00 am - 10:30 pm

OPO

SAN

24h 30m

2 stops

$755United Airlines

Wed, Nov 18 - Wed, Nov 25

1:01 pm - 12:50 pm

SJC

OPO

40h 49m

2 stops

1:45 pm - 9:04 pm

OPO

SJC

39h 19m

2 stops

$781Lufthansa

Sat, Oct 31 - Mon, Nov 16

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Delta flights from California to Porto

Our best Delta deals on California to Porto flight tickets

Delta

Dec 6

SAN7:00 amSan Diego

18h 05m

1 stop

OPO9:05 amPorto

Dec 22

OPO5:00 amPorto

15h 10m

1 stop

SAN12:10 pmSan Diego

$743

Delta

Oct 27

SAN8:00 amSan Diego

19h 35m

2 stops

OPO10:35 amPorto

Nov 3

OPO5:00 amPorto

15h 10m

1 stop

SAN12:10 pmSan Diego

$746

Delta

Oct 27

SAN8:00 amSan Diego

19h 35m

2 stops

OPO10:35 amPorto

Nov 3

OPO5:00 amPorto

15h 10m

1 stop

SAN12:10 pmSan Diego

$747

United Airlines flights from California to Porto

Our best United Airlines deals on California to Porto flight tickets

United Airlines

Nov 3

ONT9:00 amOntario

16h 30m

2 stops

OPO9:30 amPorto

Nov 19

OPO6:00 amPorto

20h 29m

2 stops

ONT6:29 pmOntario

$745

United Airlines

Nov 18

SAN8:00 amSan Diego

17h 30m

2 stops

OPO9:30 amPorto

Nov 25

OPO6:00 amPorto

24h 30m

2 stops

SAN10:30 pmSan Diego

$755

United Airlines

Nov 18

SAN7:00 amSan Diego

18h 30m

1 stop

OPO9:30 amPorto

Nov 25

OPO12:35 pmPorto

16h 47m

1 stop

SAN9:22 pmSan Diego

$760

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 8/15

4:45 pm-7:30 pm

1 stop18h 45m

Porto

Fri 8/28

5:55 pm-2:40 pm

1 stop28h 45m

$616

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 11/5

4:45 pm-11:10 am

1 stop34h 25m

Porto

Thu 11/19

5:50 pm-2:50 pm

1 stop29h 00m

$651

Quickest round-trip

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Fri 10/30

8:15 pm-5:00 pm

1 stop13h 45m

Porto

Sat 11/14

7:00 am-2:45 pm

1 stop15h 45m

$685

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 10/31

5:35 pm-3:00 pm

1 stop14h 25m

Porto

Mon 11/16

5:00 am-2:45 pm

1 stop17h 45m

$687

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 12/6

7:00 am-9:05 am

1 stop18h 05m

Porto

Thu 12/24

5:00 am-12:10 pm

1 stop15h 10m

$743

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 11/3

9:00 am-9:30 am

2 stops16h 30m

Porto

Thu 11/19

6:00 am-6:29 pm

2 stops20h 29m

$745

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

3:05 pm-3:25 pm

1 stop17h 20m

Porto

Tue 11/3

5:00 am-12:10 pm

1 stop15h 10m

$746

San JosePorto

SJC - OPO

SJCOPO

San Jose

Sun 11/1

8:45 am-12:50 pm

2 stops20h 05m

Porto

Tue 11/17

6:00 am-9:04 pm

2 stops23h 04m

$746

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 11/18

8:00 am-9:30 am

2 stops17h 30m

Porto

Wed 11/25

6:00 am-10:30 pm

2 stops24h 30m

$755

San JosePorto

SJC - OPO

SJCOPO

San Jose

Sat 10/31

1:01 pm-12:50 pm

2 stops40h 49m

Porto

Mon 11/16

1:45 pm-9:04 pm

2 stops39h 19m

$781

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 $251. 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 $366.

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 $854 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 $792 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 9% 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

Fastest flight time	13h 05m
Direct flights	None

The fastest flight from California to Porto takes 13h 05m

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 July 2026, there are 12 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 $366	Free Cancellation	Rating 7.8 1,534 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,320 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 1,869 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 8,101 reviews	Search British Airways flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,450 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,122 reviews	Search Lufthansa flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,247 reviews	Search Iberia flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 9,944 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 1,990 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,437 reviews	Search Turkish Airlines flights

Vila Nova de Gaia

Coimbra

Braga

Aveiro

Matosinhos

Esposende

Lamego

Chaves

Pinhao

Arcos de Valdevez

Guimarães

Espinho

Ponte de Lima

Viseu

Curia

Mesao Frio

Penafiel

Baiao

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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Cheap flights from California to Porto from $301

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 8/29. 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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Delta flights from California to Porto

Our best Delta 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

Find info about flight duration, direct flights, and airports for your flight from California to Porto

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

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List of cabin classes available on flights landing in Porto. Availability may vary depending on flight origin and airline.

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