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

LEVEL, United Airlines, and SWISS 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 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 14h 05m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Porto?

United Airlines, TAP AIR PORTUGAL and Delta are the top three most popular airlines that fly to Porto from California according to our data. United Airlines is the first choice among our users, with 32% 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 August 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.

$289 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.

4:35 pm - 5:05 pm

SFO

OPO

16h 30m

1 stop

7:00 am - 2:30 pm

OPO

SFO

15h 30m

1 stop

$709TAP AIR PORTUGAL

Wed, Oct 7 - Thu, Oct 22

7:35 pm - 8:25 pm

SFO

OPO

16h 50m

1 stop

7:00 am - 2:35 pm

OPO

SFO

15h 35m

1 stop

$714TAP AIR PORTUGAL

Sat, Sep 12 - Wed, Sep 23

8:25 am - 12:50 pm

SFO

OPO

20h 25m

2 stops

6:15 am - 7:35 pm

OPO

SFO

21h 20m

1 stop

$723Multiple Airlines

Mon, Nov 16 - Fri, Nov 27

7:25 pm - 11:15 am

SFO

OPO

31h 50m

1 stop

6:00 am - 4:06 pm

OPO

SFO

18h 06m

2 stops

$723Multiple Airlines

Mon, Nov 9 - Fri, Nov 20

12:01 pm - 11:55 pm

SMF

OPO

27h 54m

2 stops

6:00 am - 9:00 pm

OPO

SMF

23h 00m

2 stops

$727Lufthansa

Wed, Nov 4 - Wed, Nov 25

6:30 am - 9:30 am

SFO

OPO

19h 00m

2 stops

6:00 am - 8:10 pm

OPO

SFO

22h 10m

1 stop

$745United Airlines

Tue, Dec 1 - Tue, Dec 8

1:56 pm - 9:30 am

BUR

OPO

35h 34m

3 stops

6:00 am - 8:28 pm

OPO

BUR

22h 28m

2 stops

$745United Airlines

Mon, Dec 7 - Fri, Dec 11

8:25 am - 11:15 am

SFO

OPO

42h 50m

2 stops

6:00 am - 8:14 pm

OPO

SFO

46h 14m

2 stops

$756Air Canada

Mon, Jan 25 - Fri, Jan 29

12:39 pm - 12:50 pm

SAN

OPO

17h 11m

2 stops

6:00 am - 9:57 pm

OPO

SAN

23h 57m

2 stops

$794Lufthansa

Tue, Oct 27 - Wed, Dec 9

8:40 am - 12:50 pm

SFO

OPO

21h 10m

2 stops

6:00 am - 10:57 pm

OPO

SFO

24h 57m

2 stops

$801Air Canada

Sat, Oct 31 - Fri, Nov 6

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

Royal Air Maroc flights from California to Porto

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

Royal Air Maroc

Sep 4

LAX10:20 amLos Angeles

16h 55m

1 stop

OPO11:15 amPorto

Sep 12

OPO12:15 pmPorto

28h 05m

1 stop

LAX8:20 amLos Angeles

$867

Royal Air Maroc

Sep 11

LAX10:20 amLos Angeles

16h 55m

1 stop

OPO11:15 amPorto

Sep 19

OPO12:15 pmPorto

28h 05m

1 stop

LAX8:20 amLos Angeles

$880

Royal Air Maroc

Aug 21

LAX10:20 amLos Angeles

16h 55m

1 stop

OPO11:15 amPorto

Aug 29

OPO12:15 pmPorto

28h 05m

1 stop

LAX8:20 amLos Angeles

$895

TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL deals on California to Porto flight tickets

TAP AIR PORTUGAL

Oct 7

SFO4:35 pmSan Francisco

16h 30m

1 stop

OPO5:05 pmPorto

Oct 22

OPO7:00 amPorto

15h 30m

1 stop

SFO2:30 pmSan Francisco

$709

TAP AIR PORTUGAL

Sep 12

SFO7:35 pmSan Francisco

16h 50m

1 stop

OPO8:25 pmPorto

Sep 23

OPO7:00 amPorto

15h 35m

1 stop

SFO2:35 pmSan Francisco

$714

TAP AIR PORTUGAL

Sep 12

SFO7:35 pmSan Francisco

21h 05m

1 stop

OPO12:40 amPorto

Sep 23

OPO6:00 pmPorto

28h 30m

1 stop

SFO2:30 pmSan Francisco

$716

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 10/7

4:35 pm-5:05 pm

1 stop16h 30m

Porto

Thu 10/22

7:00 am-2:30 pm

1 stop15h 30m

$709

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 9/12

7:35 pm-8:25 pm

1 stop16h 50m

Porto

Wed 9/23

7:00 am-2:35 pm

1 stop15h 35m

$714

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 11/16

8:25 am-12:50 pm

2 stops20h 25m

Porto

Fri 11/27

6:15 am-7:35 pm

1 stop21h 20m

$723

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 11/9

7:25 pm-11:15 am

1 stop31h 50m

Porto

Fri 11/20

6:00 am-4:06 pm

2 stops18h 06m

$723

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Wed 11/4

12:01 pm-11:55 pm

2 stops27h 54m

Porto

Wed 11/25

6:00 am-9:00 pm

2 stops23h 00m

$727

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 12/1

6:30 am-9:30 am

2 stops19h 00m

Porto

Tue 12/8

6:00 am-8:10 pm

1 stop22h 10m

$745

BurbankPorto

BUR - OPO

BUROPO

Burbank Bob Hope

Mon 12/7

1:56 pm-9:30 am

3 stops35h 34m

Porto

Fri 12/11

6:00 am-8:28 pm

2 stops22h 28m

$745

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 1/25

8:25 am-11:15 am

2 stops42h 50m

Porto

Fri 1/29

6:00 am-8:14 pm

2 stops46h 14m

$756

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

12:39 pm-12:50 pm

2 stops17h 11m

Porto

Wed 12/9

6:00 am-9:57 pm

2 stops23h 57m

$794

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 10/31

8:40 am-12:50 pm

2 stops21h 10m

Porto

Fri 11/6

6:00 am-10:57 pm

2 stops24h 57m

$801

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 $851 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 22% 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 August 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
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,356 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom $476	Free Cancellation	Rating 7.8 1,552 reviews	Search KLM flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.4 1,923 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 8,147 reviews	Search British Airways flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,483 reviews	Search Delta flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,267 reviews	Search Iberia flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 8,177 reviews	Search Lufthansa flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,059 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,025 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,464 reviews	Search Turkish Airlines flights

Vila Nova de Gaia

Coimbra

Braga

Aveiro

Matosinhos

Pinhao

Esposende

Lamego

Chaves

Arcos de Valdevez

Guimarães

Viseu

Espinho

Ponte de Lima

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Thu 9/3

Thu 9/10

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 $293

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 10/17. 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

Royal Air Maroc flights from California to Porto

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

TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL 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

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