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 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.

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

Delta, American Airlines, and KLM 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 Los Angeles and flying into Porto (one of the most popular routes), then the duration is 13h 50m on average. Another popular route from California to Porto is flying from San Francisco to Porto, which will take roughly 14h 30m. Keep in mind that layovers or delays could extend your travel time.

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.

$236 Cheap Flights from California to Porto in 2025/26

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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.

7:10 pm - 11:10 am

LAX

OPO

32h 00m1 stop

12:50 pm - 4:35 pm

OPO

LAX

35h 45m1 stop

$470SWISS

Sat, Jan 24 - Fri, Feb 6

10:55 pm - 11:40 am

LAX

OPO

28h 45m2 stops

11:55 am - 4:35 pm

OPO

LAX

36h 40m1 stop

$478Multiple Airlines

Sat, Jan 24 - Sat, Feb 7

6:25 am - 10:30 am

LAX

OPO

20h 05m2 stops

11:15 am - 11:45 am

OPO

LAX

32h 30m1 stop

$479Delta

Sat, Jan 24 - Sat, Feb 7

6:20 pm - 10:30 am

LAX

OPO

32h 10m1 stop

11:15 am - 12:45 pm

OPO

LAX

32h 30m1 stop

$480KLM

Thu, Mar 5 - Sun, Mar 15

6:20 pm - 10:30 am

LAX

OPO

32h 10m1 stop

11:15 am - 11:45 am

OPO

LAX

32h 30m1 stop

$481Delta

Sat, Jan 24 - Sat, Feb 7

4:40 pm - 4:55 pm

SFO

OPO

16h 15m1 stop

5:35 pm - 3:35 pm

OPO

SFO

29h 00m1 stop

$481Scandinavian Airlines

Thu, Mar 5 - Mon, Mar 9

1:45 pm - 7:20 pm

LAX

OPO

21h 35m1 stop

11:15 am - 11:45 am

OPO

LAX

32h 30m1 stop

$484KLM

Wed, Feb 11 - Wed, Feb 18

7:08 am - 9:30 am

SMF

OPO

18h 22m2 stops

12:30 pm - 10:30 pm

OPO

SMF

18h 00m2 stops

$486United Airlines

Wed, Feb 25 - Fri, Mar 6

5:00 am - 9:45 am

LAX

OPO

20h 45m2 stops

6:00 am - 8:23 pm

OPO

LAX

22h 23m2 stops

$491United Airlines

Mon, Apr 13 - Thu, Apr 30

5:40 pm - 4:55 pm

SFO

OPO

16h 15m1 stop

5:35 pm - 3:35 pm

OPO

SFO

29h 00m1 stop

$539Scandinavian Airlines

Thu, Mar 12 - Mon, Mar 23

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

Iberia

Jan 7

LAX6:10 pmLos Angeles

17h 50m

1 stop

OPO8:00 pmPorto

Jan 17

OPO12:25 pmPorto

20h 16m

2 stops

LAX12:41 amLos Angeles

$753

Find similar

Iberia

Dec 31

LAX6:10 pmLos Angeles

17h 50m

1 stop

OPO8:00 pmPorto

Jan 10

OPO12:25 pmPorto

36h 10m

1 stop

LAX4:35 pmLos Angeles

$869

Find similar

Iberia

Jan 22

ONT10:58 amOntario

21h 02m

2 stops

OPO4:00 pmPorto

Jan 26

OPO12:25 pmPorto

33h 53m

2 stops

ONT2:18 pmOntario

$883

Find similar

KLM flights from California to Porto

Our best KLM deals on California to Porto flight tickets

KLM

Mar 5

LAX6:20 pmLos Angeles

32h 10m

1 stop

OPO10:30 amPorto

Mar 15

OPO11:15 amPorto

32h 30m

1 stop

LAX12:45 pmLos Angeles

$480

Find similar

KLM

Feb 11

LAX1:45 pmLos Angeles

21h 35m

1 stop

OPO7:20 pmPorto

Feb 18

OPO11:15 amPorto

32h 30m

1 stop

LAX11:45 amLos Angeles

$484

Find similar

KLM

Mar 10

SAN3:00 pmSan Diego

17h 25m

1 stop

OPO3:25 pmPorto

Mar 20

OPO4:10 pmPorto

27h 55m

1 stop

SAN1:05 pmSan Diego

$485

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 1/24

7:10 pm-11:10 am

1 stop32h 00m

Porto

Fri 2/6

12:50 pm-4:35 pm

1 stop35h 45m

$470

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 1/24

10:55 pm-11:40 am

2 stops28h 45m

Porto

Sat 2/7

11:55 am-4:35 pm

1 stop36h 40m

$478

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 1/24

6:25 am-10:30 am

2 stops20h 05m

Porto

Sat 2/7

11:15 am-11:45 am

1 stop32h 30m

$479

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Thu 3/5

6:20 pm-10:30 am

1 stop32h 10m

Porto

Sun 3/15

11:15 am-12:45 pm

1 stop32h 30m

$480

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 1/24

6:20 pm-10:30 am

1 stop32h 10m

Porto

Sat 2/7

11:15 am-11:45 am

1 stop32h 30m

$481

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 3/5

4:40 pm-4:55 pm

1 stop16h 15m

Porto

Mon 3/9

5:35 pm-3:35 pm

1 stop29h 00m

$481

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Wed 2/11

1:45 pm-7:20 pm

1 stop21h 35m

Porto

Wed 2/18

11:15 am-11:45 am

1 stop32h 30m

$484

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Wed 2/25

7:08 am-9:30 am

2 stops18h 22m

Porto

Fri 3/6

12:30 pm-10:30 pm

2 stops18h 00m

$486

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 4/13

5:00 am-9:45 am

2 stops20h 45m

Porto

Thu 4/30

6:00 am-8:23 pm

2 stops22h 23m

$491

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 3/12

5:40 pm-4:55 pm

1 stop16h 15m

Porto

Mon 3/23

5:35 pm-3:35 pm

1 stop29h 00m

$539

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 $666. 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 $671.

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 $891 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 $765 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	13h 50m
Direct flights	None

The fastest flight from California to Porto takes 13h 50m

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
KLM	PriceFrom $476	Free Cancellation	Rating 7.7 1,435 reviews	Search KLM flights
Scandinavian Airlines	PriceFrom $527	Free Cancellation	Rating 7.4 1,629 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 7,614 reviews	Search British Airways flights
Iberia	PriceFrom $540	Free Cancellation	Rating 7.0 3,059 reviews	Search Iberia flights
SWISS	PriceFrom $567	Free Cancellation	Rating 7.5 1,825 reviews	Search SWISS flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.2 11,069 reviews	Search American Airlines flights
TAP AIR PORTUGAL	PriceFrom $574	Free Cancellation	Rating 7.2 2,098 reviews	Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom $593	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Lufthansa	PriceFrom $611	Free Cancellation	Rating 6.8 7,656 reviews	Search Lufthansa flights

Vila Nova de Gaia

Coimbra

Braga

Aveiro

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Guimarães

Esposende

Lamego

Chaves

Viseu

Espinho

Arcos de Valdevez

Pinhao

Ponte de Lima

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.