What airlines fly to Porto?

United Airlines, TAP AIR PORTUGAL and SWISS 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 42% 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.

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 13h 05m on average. Another popular route from California to Porto is flying from San Francisco to Porto, which will take roughly 14h 20m. 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, Lufthansa, and British Airways 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 December 2025, 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.

$256 Cheap Flights from California to Porto in 2025/26

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Find the cheapest flights from California to Porto

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Cheap round-trip flights

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8:30 am - 12:05 pmLAX-OPO

19h 35m2 stops

12:05 pm - 4:35 pmOPO-LAX

36h 30m1 stop

$442Multiple Airlines

Find Deal

Sun, Jan 18 - Mon, Jan 26

7:10 pm - 11:15 amLAX-OPO

32h 05m1 stop

6:00 am - 10:32 amOPO-LAX

36h 32m2 stops

$446Multiple Airlines

Find Deal

Tue, Jan 13 - Tue, Jan 20

3:30 pm - 4:45 pmLAX-OPO

17h 15m1 stop

8:20 am - 8:55 pmOPO-LAX

20h 35m2 stops

$447British Airways

Find Deal

Wed, Jan 14 - Fri, Jan 23

8:30 am - 12:05 pmLAX-OPO

19h 35m2 stops

6:00 am - 9:28 pmOPO-LAX

23h 28m2 stops

$448Air Canada

Find Deal

Sun, Jan 18 - Tue, Feb 3

7:10 pm - 11:10 amLAX-OPO

32h 00m1 stop

12:05 pm - 4:35 pmOPO-LAX

36h 30m1 stop

$449SWISS

Find Deal

Thu, Jan 15 - Thu, Jan 22

8:30 am - 12:05 pmLAX-OPO

19h 35m2 stops

12:05 pm - 4:35 pmOPO-LAX

36h 30m1 stop

$451Multiple Airlines

Find Deal

Thu, Jan 15 - Thu, Jan 22

10:40 am - 11:45 amLAX-OPO

17h 05m2 stops

9:55 pm - 6:05 pmOPO-LAX

28h 10m1 stop

$452Iberia

Find Deal

Mon, Jan 26 - Wed, Feb 11

7:10 pm - 11:15 amLAX-OPO

32h 05m1 stop

7:20 pm - 4:35 pmOPO-LAX

29h 15m1 stop

$454SWISS

Find Deal

Sun, Feb 15 - Mon, Feb 23

4:35 pm - 5:15 pmSMF-OPO

40h 40m2 stops

12:25 pm - 7:49 pmOPO-SMF

39h 24m2 stops

$456British Airways

Find Deal

Wed, Jan 21 - Wed, Feb 11

6:00 pm - 11:45 amSAN-OPO

33h 45m2 stops

8:20 am - 10:26 pmOPO-SAN

22h 06m2 stops

$484Iberia

Find Deal

Fri, Jan 16 - Fri, Jan 23

British Airways flights from California to Porto

Our best British Airways deals on California to Porto flight tickets

British Airways

Jan 14

LAX3:30 pmLos Angeles

17h 15m

1 stop

OPO4:45 pmPorto

Jan 23

OPO8:20 amPorto

20h 35m

2 stops

LAX8:55 pmLos Angeles

$447

Find similar

British Airways

Jan 21

SMF4:35 pmSacramento Intl

40h 40m

2 stops

OPO5:15 pmPorto

Feb 11

OPO12:25 pmPorto

39h 24m

2 stops

SMF7:49 pmSacramento Intl

$456

Find similar

British Airways

Feb 11

LAX3:30 pmLos Angeles

16h 35m

1 stop

OPO4:05 pmPorto

Feb 21

OPO7:50 pmPorto

30h 40m

1 stop

LAX6:30 pmLos Angeles

$505

Find similar

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

Iberia

Jan 26

LAX10:40 amLos Angeles

17h 05m

2 stops

OPO11:45 amPorto

Feb 11

OPO9:55 pmPorto

28h 10m

1 stop

LAX6:05 pmLos Angeles

$452

Find similar

Iberia

Jan 13

LAX6:15 amLos Angeles

17h 25m

2 stops

OPO7:40 amPorto

Jan 20

OPO8:20 amPorto

20h 58m

2 stops

LAX9:18 pmLos Angeles

$460

Find similar

Iberia

Jan 16

LAX10:40 amLos Angeles

17h 05m

2 stops

OPO11:45 amPorto

Jan 23

OPO12:25 pmPorto

20h 06m

2 stops

LAX12:31 amLos Angeles

$472

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 1/18

8:30 am-12:05 pm

2 stops19h 35m

Porto

Mon 1/26

12:05 pm-4:35 pm

1 stop36h 30m

$442

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 1/13

7:10 pm-11:15 am

1 stop32h 05m

Porto

Tue 1/20

6:00 am-10:32 am

2 stops36h 32m

$446

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 1/14

3:30 pm-4:45 pm

1 stop17h 15m

Porto

Fri 1/23

8:20 am-8:55 pm

2 stops20h 35m

$447

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 1/18

8:30 am-12:05 pm

2 stops19h 35m

Porto

Tue 2/3

6:00 am-9:28 pm

2 stops23h 28m

$448

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 1/15

7:10 pm-11:10 am

1 stop32h 00m

Porto

Thu 1/22

12:05 pm-4:35 pm

1 stop36h 30m

$449

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 1/15

8:30 am-12:05 pm

2 stops19h 35m

Porto

Thu 1/22

12:05 pm-4:35 pm

1 stop36h 30m

$451

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 1/26

10:40 am-11:45 am

2 stops17h 05m

Porto

Wed 2/11

9:55 pm-6:05 pm

1 stop28h 10m

$452

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 2/15

7:10 pm-11:15 am

1 stop32h 05m

Porto

Mon 2/23

7:20 pm-4:35 pm

1 stop29h 15m

$454

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Wed 1/21

4:35 pm-5:15 pm

2 stops40h 40m

Porto

Wed 2/11

12:25 pm-7:49 pm

2 stops39h 24m

$456

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Fri 1/16

6:00 pm-11:45 am

2 stops33h 45m

Porto

Fri 1/23

8:20 am-10:26 pm

2 stops22h 06m

$484

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 $643. 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 $668.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Wednesday when prices can be found for as low as $942. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,197. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the evening is the cheapest time of day to fly from California to Porto when you can find flight prices for as low as $954. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,172 on average. Flights to Porto from California in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $898 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 $767 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 17% 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 05m
Direct flights	None

The fastest flight from California to Porto takes 14h 05m

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 December 2025, 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 $388	Free Cancellation	Rating 0.0	Search LEVEL flights
Scandinavian Airlines	PriceFrom $527	Free Cancellation	Rating 7.4 1,591 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 7,555 reviews	Search British Airways flights
Iberia	PriceFrom $540	Free Cancellation	Rating 7.0 3,038 reviews	Search Iberia flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 7,607 reviews	Search Lufthansa flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
TAP AIR PORTUGAL	PriceFrom $574	Free Cancellation	Rating 7.1 2,081 reviews	Search TAP AIR PORTUGAL flights
SWISS	PriceFrom $610	Free Cancellation	Rating 7.5 1,798 reviews	Search SWISS flights
United Airlines	PriceFrom $615	Free Cancellation	Rating 7.4 9,064 reviews	Search United Airlines flights
KLM	PriceFrom $673	Free Cancellation	Rating 7.7 1,426 reviews	Search KLM flights

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Coimbra

Braga

Aveiro

Matosinhos

Guimarães

Lamego

Esposende

Chaves

Viseu

Espinho

Ponte de Lima

Arcos de Valdevez

Pinhao

Curia

Penafiel

Mesao Frio

Mira

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

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Cheap flights from California to Porto from $256

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 2/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

Trusted and free

Trusted and free

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British Airways flights from California to Porto

Our best British Airways deals on California to Porto flight tickets

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Our best Iberia 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

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

What is the cheapest month to fly to Porto?

What is the cheapest day to depart on your flight to Porto?

What is the cheapest time of day to depart on your flight to Porto?

How far in advance should I book a flight to Porto?

Can stopping save me money on California to Porto flights?

You could potentially save up to 17% on your flight if you consider stops on a California to Porto flight.

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

United Airlines, Lufthansa, and British Airways are the most popular carriers operating 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

When did momondo last update prices for flights from California to Porto Airport?

How many operators does momondo search for flights from California to Porto Airport?

How old do you have to be to fly from California to Porto Airport?

What documentation or ID do you need to fly to Porto Airport?

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?

Why should I use momondo to find a flight deal from California to Porto?

Can I find flights from California to Porto with flexible booking policies on momondo?

How can momondo help me find flights from California to Porto?

I’m not ready to book a flight from California to Porto right now. Can momondo alert me if 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.

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