How long does it take to fly to Porto?

Flight times from California to Porto vary, but if you’re flying out of San Francisco and flying into Porto (one of the most popular routes), then the duration is 14h 25m on average. Another popular route from California to Porto is flying from Los Angeles to Porto, which will take roughly 15h 45m. Keep in mind that layovers or delays could extend your travel time.

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

SWISS, Lufthansa, and United Airlines are the most popular carriers operating from California to Porto

What airlines fly to Porto?

United Airlines, TAP AIR PORTUGAL and Lufthansa 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 41% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 14 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 January 2026, there are 14 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.

$217 Cheap Flights from California to Porto in 2026

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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.

8:40 am - 9:30 am

LAX

OPO

16h 50m

2 stops

12:35 pm - 1:09 am

OPO

LAX

19h 34m

2 stops

$436United Airlines

Mon, Mar 2 - Wed, Mar 18

7:50 pm - 9:30 am

SAN

OPO

29h 40m

3 stops

12:45 pm - 10:22 am

OPO

SAN

28h 37m

2 stops

$436United Airlines

Sat, Feb 28 - Fri, Mar 13

7:10 pm - 11:15 am

LAX

OPO

32h 05m

1 stop

7:25 pm - 4:35 pm

OPO

LAX

29h 10m

1 stop

$437SWISS

Sun, Feb 15 - Tue, Feb 24

9:00 pm - 5:45 pm

LAX

OPO

36h 45m

1 stop

8:20 am - 5:35 pm

OPO

LAX

16h 15m

1 stop

$439British Airways

Mon, Feb 23 - Wed, Mar 11

7:10 pm - 6:35 pm

LAX

OPO

15h 25m

1 stop

7:20 pm - 5:35 pm

OPO

LAX

29h 15m

1 stop

$441SWISS

Mon, Mar 2 - Mon, Mar 16

6:25 am - 4:45 pm

LAX

OPO

26h 20m

2 stops

8:20 am - 4:35 pm

OPO

LAX

16h 15m

1 stop

$442British Airways

Wed, Feb 11 - Fri, Feb 27

3:00 pm - 2:55 pm

LAX

OPO

15h 55m

1 stop

7:20 pm - 4:35 pm

OPO

LAX

29h 15m

1 stop

$449Multiple Airlines

Mon, Feb 16 - Mon, Feb 23

10:22 pm - 7:40 am

SMF

OPO

25h 18m

2 stops

8:20 am - 10:05 pm

OPO

SMF

20h 45m

2 stops

$455American Airlines

Mon, Mar 2 - Wed, Mar 18

7:16 am - 7:40 am

ONT

OPO

16h 24m

2 stops

4:40 pm - 10:06 am

OPO

ONT

25h 26m

2 stops

$461American Airlines

Tue, Feb 3 - Wed, Mar 4

5:35 pm - 11:40 pm

SAN

OPO

22h 05m

1 stop

7:20 pm - 10:44 pm

OPO

SAN

35h 24m

2 stops

$461Multiple Airlines

Wed, Feb 18 - Wed, Feb 25

British Airways flights from California to Porto

Our best British Airways deals on California to Porto flight tickets

British Airways

Feb 23

LAX9:00 pmLos Angeles

36h 45m

1 stop

OPO5:45 pmPorto

Mar 11

OPO8:20 amPorto

16h 15m

1 stop

LAX5:35 pmLos Angeles

$439

British Airways

Feb 11

LAX7:30 amLos Angeles

25h 15m

2 stops

OPO4:45 pmPorto

Mar 6

OPO8:20 amPorto

16h 15m

1 stop

LAX4:35 pmLos Angeles

$442

British Airways

Apr 21

LAX8:55 pmLos Angeles

28h 10m

1 stop

OPO9:05 amPorto

May 6

OPO8:20 amPorto

18h 42m

2 stops

LAX7:02 pmLos Angeles

$448

Air Canada flights from California to Porto

Our best Air Canada deals on California to Porto flight tickets

Air Canada

Feb 17

LAX10:50 pmLos Angeles

35h 45m

2 stops

OPO6:35 pmPorto

Mar 8

OPO6:15 amPorto

41h 14m

2 stops

LAX3:29 pmLos Angeles

$477

Air Canada

Feb 17

LAX10:50 pmLos Angeles

52h 20m

2 stops

OPO11:10 amPorto

Mar 7

OPO8:40 amPorto

20h 48m

2 stops

LAX9:28 pmLos Angeles

$485

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/2

8:40 am-9:30 am

2 stops16h 50m

Porto

Wed 3/18

12:35 pm-1:09 am

2 stops19h 34m

$436

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 2/28

7:50 pm-9:30 am

3 stops29h 40m

Porto

Fri 3/13

12:45 pm-10:22 am

2 stops28h 37m

$436

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 2/15

7:10 pm-11:15 am

1 stop32h 05m

Porto

Tue 2/24

7:25 pm-4:35 pm

1 stop29h 10m

$437

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 2/23

9:00 pm-5:45 pm

1 stop36h 45m

Porto

Wed 3/11

8:20 am-5:35 pm

1 stop16h 15m

$439

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/2

7:10 pm-6:35 pm

1 stop15h 25m

Porto

Mon 3/16

7:20 pm-5:35 pm

1 stop29h 15m

$441

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 2/11

6:25 am-4:45 pm

2 stops26h 20m

Porto

Fri 2/27

8:20 am-4:35 pm

1 stop16h 15m

$442

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 2/16

3:00 pm-2:55 pm

1 stop15h 55m

Porto

Mon 2/23

7:20 pm-4:35 pm

1 stop29h 15m

$449

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Mon 3/2

10:22 pm-7:40 am

2 stops25h 18m

Porto

Wed 3/18

8:20 am-10:05 pm

2 stops20h 45m

$455

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Tue 2/3

7:16 am-7:40 am

2 stops16h 24m

Porto

Wed 3/4

4:40 pm-10:06 am

2 stops25h 26m

$461

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 2/18

5:35 pm-11:40 pm

1 stop22h 05m

Porto

Wed 2/25

7:20 pm-10:44 pm

2 stops35h 24m

$461

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 $627.

How far in advance should I book a flight 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 $873 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 $737 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

Fastest flight time	14h 25m
Direct flights	None

The fastest flight from California to Porto takes 14h 25m

There are no direct flights from California to Porto. There are no popular flight routes from California to Porto.

Search flight deals

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 January 2026, there are 14 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
LEVEL	PriceFrom $263	Free Cancellation	Rating 0.0	Search LEVEL flights
KLM	PriceFrom $366	Free Cancellation	Rating 7.7 1,442 reviews	Search KLM flights
Iberia	PriceFrom $451	Free Cancellation	Rating 7.0 3,094 reviews	Search Iberia flights
Scandinavian Airlines	PriceFrom $460	Free Cancellation	Rating 7.3 1,660 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.9 8,088 reviews	Search Delta flights
TAP AIR PORTUGAL	PriceFrom $527	Free Cancellation	Rating 7.1 2,124 reviews	Search TAP AIR PORTUGAL flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 7,689 reviews	Search British Airways flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 7,738 reviews	Search Lufthansa flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.2 11,174 reviews	Search American Airlines flights
United Airlines	PriceFrom $593	Free Cancellation	Rating 7.4 9,191 reviews	Search United Airlines flights

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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.