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

United Airlines, Air Canada, and Iberia 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 40% 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.

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 14h 45m. 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 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.

$275 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.

7:10 pm - 8:45 am

LAX

OPO

29h 35m

1 stop

6:20 pm - 4:50 pm

OPO

LAX

30h 30m

1 stop

$536Scandinavian Airlines

Thu, Apr 16 - Sun, Apr 19

7:10 pm - 8:45 am

LAX

OPO

29h 35m

1 stop

11:50 am - 4:50 pm

OPO

LAX

37h 00m

1 stop

$546Scandinavian Airlines

Thu, Apr 23 - Thu, May 7

6:00 pm - 7:50 am

LAX

OPO

29h 50m

1 stop

10:30 pm - 2:40 pm

OPO

LAX

24h 10m

1 stop

$574TAP AIR PORTUGAL

Sat, Apr 18 - Fri, May 1

6:00 pm - 5:00 pm

LAX

OPO

15h 00m

1 stop

7:00 am - 2:40 pm

OPO

LAX

15h 40m

1 stop

$575TAP AIR PORTUGAL

Sat, May 2 - Sat, May 9

7:40 pm - 6:50 am

SFO

OPO

27h 10m

1 stop

7:35 pm - 5:55 pm

OPO

SFO

30h 20m

1 stop

$636Multiple Airlines

Tue, Apr 7 - Wed, Apr 15

1:25 pm - 9:45 am

LAX

OPO

36h 20m

1 stop

4:40 pm - 6:15 pm

OPO

LAX

33h 35m

1 stop

$643Turkish Airlines

Mon, Apr 27 - Thu, May 7

6:45 pm - 10:00 am

SFO

OPO

31h 15m

1 stop

10:40 am - 4:40 pm

OPO

SFO

38h 00m

1 stop

$646Turkish Airlines

Tue, May 12 - Tue, May 26

2:20 pm - 10:00 pm

ONT

OPO

23h 40m

2 stops

5:00 am - 5:15 pm

OPO

ONT

20h 15m

2 stops

$657Delta

Wed, Apr 22 - Wed, Apr 29

7:05 am - 3:25 pm

BUR

OPO

24h 20m

2 stops

5:55 am - 9:42 pm

OPO

BUR

23h 47m

2 stops

$664Delta

Wed, Apr 22 - Wed, Apr 29

3:15 pm - 11:50 pm

SFO

OPO

24h 35m

2 stops

8:15 pm - 1:15 pm

OPO

SFO

25h 00m

2 stops

$674Multiple Airlines

Wed, Apr 22 - Mon, Apr 27

Delta flights from California to Porto

Our best Delta deals on California to Porto flight tickets

Delta

Apr 14

LAX10:50 amLos Angeles Los Angeles

20h 35m

2 stops

OPO3:25 pmPorto

Apr 22

OPO5:00 amPorto

17h 45m

1 stop

LAX2:45 pmLos Angeles Los Angeles

$647

Delta

Apr 14

LAX10:50 amLos Angeles Los Angeles

20h 35m

2 stops

OPO3:25 pmPorto

Apr 22

OPO5:00 amPorto

19h 28m

2 stops

LAX4:28 pmLos Angeles Los Angeles

$657

Delta

Apr 22

BUR7:05 amBurbank Bob Hope

24h 20m

2 stops

OPO3:25 pmPorto

Apr 29

OPO5:55 amPorto

23h 47m

2 stops

BUR9:42 pmBurbank Bob Hope

$664

United Airlines flights from California to Porto

Our best United Airlines deals on California to Porto flight tickets

United Airlines

Aug 9

LAX11:15 amLos Angeles Los Angeles

14h 30m

1 stop

OPO9:45 amPorto

Aug 21

OPO9:00 amPorto

19h 15m

2 stops

LAX8:15 pmLos Angeles Los Angeles

$665

United Airlines

Aug 18

LAX8:15 amLos Angeles Los Angeles

14h 45m

1 stop

OPO7:00 amPorto

Aug 27

OPO11:50 amPorto

33h 11m

2 stops

LAX1:01 pmLos Angeles Los Angeles

$689

United Airlines

Aug 18

LAX8:15 amLos Angeles Los Angeles

14h 45m

1 stop

OPO7:00 amPorto

Aug 27

OPO11:50 amPorto

15h 59m

1 stop

LAX7:49 pmLos Angeles Los Angeles

$703

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Thu 4/16

7:10 pm-8:45 am

1 stop29h 35m

Porto

Sun 4/19

6:20 pm-4:50 pm

1 stop30h 30m

$536

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Thu 4/23

7:10 pm-8:45 am

1 stop29h 35m

Porto

Thu 5/7

11:50 am-4:50 pm

1 stop37h 00m

$546

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Sat 4/18

6:00 pm-7:50 am

1 stop29h 50m

Porto

Fri 5/1

10:30 pm-2:40 pm

1 stop24h 10m

$574

Quickest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Sat 5/2

6:00 pm-5:00 pm

1 stop15h 00m

Porto

Sat 5/9

7:00 am-2:40 pm

1 stop15h 40m

$575

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 4/7

7:40 pm-6:50 am

1 stop27h 10m

Porto

Wed 4/15

7:35 pm-5:55 pm

1 stop30h 20m

$636

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles Los Angeles

Mon 4/27

1:25 pm-9:45 am

1 stop36h 20m

Porto

Thu 5/7

4:40 pm-6:15 pm

1 stop33h 35m

$643

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 5/12

6:45 pm-10:00 am

1 stop31h 15m

Porto

Tue 5/26

10:40 am-4:40 pm

1 stop38h 00m

$646

OntarioPorto

ONT - OPO

ONTOPO

Ontario

Wed 4/22

2:20 pm-10:00 pm

2 stops23h 40m

Porto

Wed 4/29

5:00 am-5:15 pm

2 stops20h 15m

$657

BurbankPorto

BUR - OPO

BUROPO

Burbank Bob Hope

Wed 4/22

7:05 am-3:25 pm

2 stops24h 20m

Porto

Wed 4/29

5:55 am-9:42 pm

2 stops23h 47m

$664

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 4/22

3:15 pm-11:50 pm

2 stops24h 35m

Porto

Mon 4/27

8:15 pm-1:15 pm

2 stops25h 00m

$674

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 $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 $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 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 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 1,471 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.1 2,166 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $480	Free Cancellation	Rating 7.3 1,712 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $495	Free Cancellation	Rating 7.9 8,283 reviews	Search Delta flights
British Airways	PriceFrom $533	Free Cancellation	Rating 6.7 7,784 reviews	Search British Airways flights
Iberia	PriceFrom $545	Free Cancellation	Rating 7.0 3,134 reviews	Search Iberia flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 7,846 reviews	Search Lufthansa flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.1 11,444 reviews	Search American Airlines flights
United Airlines	PriceFrom $593	Free Cancellation	Rating 7.4 9,419 reviews	Search United Airlines flights

Vila Nova de Gaia

Coimbra

Braga

Aveiro

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 $275

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 8/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from California to Porto

Our best Delta 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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