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

United Airlines, Delta, 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 14h on average. Another popular route from California to Porto is flying from San Francisco to Porto, which will take roughly 14h 50m. Keep in mind that layovers or delays could extend your travel time.

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 38% 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 March 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.

$340 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.

6:00 pm - 5:00 pm

LAX

OPO

15h 00m

1 stop

4:00 pm - 2:40 pm

OPO

LAX

30h 40m

1 stop

$603TAP AIR PORTUGAL

Sat, Apr 18 - Fri, May 1

6:00 pm - 4:00 pm

LAX

OPO

14h 00m

1 stop

6:00 pm - 1:45 pm

OPO

LAX

27h 45m

1 stop

$619TAP AIR PORTUGAL

Sat, Apr 25 - Mon, May 4

7:10 pm - 11:00 am

LAX

OPO

31h 50m

1 stop

11:50 am - 4:50 pm

OPO

LAX

37h 00m

1 stop

$631Scandinavian Airlines

Mon, Apr 27 - Wed, May 20

7:10 pm - 11:00 am

LAX

OPO

31h 50m

1 stop

11:50 am - 4:50 pm

OPO

LAX

37h 00m

1 stop

$637Scandinavian Airlines

Mon, Apr 6 - Wed, Apr 22

6:45 pm - 10:00 am

SFO

OPO

31h 15m

1 stop

10:40 am - 4:40 pm

OPO

SFO

38h 00m

1 stop

$653Turkish Airlines

Tue, Apr 21 - Tue, Apr 28

6:45 pm - 11:30 pm

SFO

OPO

20h 45m

1 stop

10:40 am - 4:40 pm

OPO

SFO

38h 00m

1 stop

$671Turkish Airlines

Tue, May 12 - Tue, May 26

12:35 pm - 7:00 am

SAN

OPO

34h 25m

2 stops

1:45 pm - 3:45 pm

OPO

SAN

34h 00m

1 stop

$719Multiple Airlines

Tue, Aug 18 - Tue, Feb 16

10:40 pm - 7:00 am

SAN

OPO

24h 20m

2 stops

6:00 am - 9:57 pm

OPO

SAN

23h 57m

2 stops

$723Multiple Airlines

Tue, Aug 18 - Tue, Feb 16

6:35 am - 6:55 am

SAN

OPO

16h 20m

1 stop

6:00 am - 8:33 pm

OPO

SAN

22h 33m

2 stops

$743United Airlines

Tue, Aug 18 - Tue, Feb 16

6:30 am - 6:55 am

SAN

OPO

16h 25m

2 stops

6:00 am - 8:33 pm

OPO

SAN

22h 33m

2 stops

$748United Airlines

Tue, Aug 18 - Tue, Feb 16

Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets

Scandinavian Airlines

Apr 27

LAX7:10 pmLos Angeles

31h 50m

1 stop

OPO11:00 amPorto

May 20

OPO11:50 amPorto

37h 00m

1 stop

LAX4:50 pmLos Angeles

$631

Scandinavian Airlines

Apr 6

LAX7:10 pmLos Angeles

31h 50m

1 stop

OPO11:00 amPorto

Apr 22

OPO11:50 amPorto

37h 00m

1 stop

LAX4:50 pmLos Angeles

$637

Scandinavian Airlines

Apr 6

LAX7:10 pmLos Angeles

31h 50m

1 stop

OPO11:00 amPorto

Apr 22

OPO11:50 amPorto

37h 00m

1 stop

LAX4:50 pmLos Angeles

$664

KLM flights from California to Porto

Our best KLM deals on California to Porto flight tickets

KLM

Apr 20

LAX9:00 pmLos Angeles

17h 00m

1 stop

OPO10:00 pmPorto

Apr 29

OPO5:55 amPorto

15h 00m

1 stop

LAX12:55 pmLos Angeles

$700

KLM

Apr 22

ONT5:05 pmOntario

21h 10m

2 stops

OPO10:15 pmPorto

May 6

OPO5:55 amPorto

23h 05m

2 stops

ONT9:00 pmOntario

$744

KLM

Apr 27

LAX3:15 pmLos Angeles

22h 45m

1 stop

OPO10:00 pmPorto

May 9

OPO5:55 amPorto

18h 40m

1 stop

LAX4:35 pmLos Angeles

$750

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 4/18

6:00 pm-5:00 pm

1 stop15h 00m

Porto

Fri 5/1

4:00 pm-2:40 pm

1 stop30h 40m

$603

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 4/25

6:00 pm-4:00 pm

1 stop14h 00m

Porto

Mon 5/4

6:00 pm-1:45 pm

1 stop27h 45m

$619

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 4/27

7:10 pm-11:00 am

1 stop31h 50m

Porto

Wed 5/20

11:50 am-4:50 pm

1 stop37h 00m

$631

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 4/6

7:10 pm-11:00 am

1 stop31h 50m

Porto

Wed 4/22

11:50 am-4:50 pm

1 stop37h 00m

$637

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 4/21

6:45 pm-10:00 am

1 stop31h 15m

Porto

Tue 4/28

10:40 am-4:40 pm

1 stop38h 00m

$653

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 5/12

6:45 pm-11:30 pm

1 stop20h 45m

Porto

Tue 5/26

10:40 am-4:40 pm

1 stop38h 00m

$671

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 8/18

12:35 pm-7:00 am

2 stops34h 25m

Porto

Tue 2/16

1:45 pm-3:45 pm

1 stop34h 00m

$719

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 8/18

10:40 pm-7:00 am

2 stops24h 20m

Porto

Tue 2/16

6:00 am-9:57 pm

2 stops23h 57m

$723

Quickest round-trip

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 8/18

6:35 am-6:55 am

1 stop16h 20m

Porto

Tue 2/16

6:00 am-8:33 pm

2 stops22h 33m

$743

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 8/18

6:30 am-6:55 am

2 stops16h 25m

Porto

Tue 2/16

6:00 am-8:33 pm

2 stops22h 33m

$748

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 $621. 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.

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 $850 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 $753 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 14% 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 00m
Direct flights	None

The fastest flight from California to Porto takes 14h 00m

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 March 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
LEVEL	PriceFrom $263	Free Cancellation	Rating 0.0	Search LEVEL flights
KLM	PriceFrom $366	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.1 2,175 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.3 1,722 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $495	Free Cancellation	Rating 7.9 8,323 reviews	Search Delta flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 7,813 reviews	Search British Airways flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,150 reviews	Search Iberia flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 7,864 reviews	Search Lufthansa flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.1 11,492 reviews	Search American Airlines flights
United Airlines	PriceFrom $593	Free Cancellation	Rating 7.4 9,467 reviews	Search United Airlines flights

Vila Nova de Gaia

Coimbra

Aveiro

Braga

Matosinhos

Esposende

Lamego

Chaves

Pinhao

Guimarães

Espinho

Arcos de Valdevez

Viseu

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.

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 $340

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 5/3. 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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Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets

KLM flights from California to Porto

Our best KLM 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 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

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.

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Popular flights according to clicks in the last 7 days on momondo

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