What airlines fly to Porto?

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Porto from California according to our data. TAP AIR PORTUGAL is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 11 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 Santa Ana and flying into Porto (one of the most popular routes), then the duration is 13h 10m on average. Another popular route from California to Porto is flying from Los Angeles to Porto, which will take roughly 14h 05m. 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 SWISS 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 September 2026, there are 11 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.

$324 Cheap Flights from California to Porto in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

4:45 pm - 11:05 amSFO San Francisco-OPO Porto

34h 20m1 stop Kastrup Copenhagen

5:45 pm - 2:50 pmOPO Porto-SFO San Francisco

29h 05m1 stop Kastrup Copenhagen

$476Scandinavian Airlines

Sat, Nov 7 - Fri, Nov 20

4:45 pm - 4:45 pmSFO San Francisco-OPO Porto

16h 00m1 stop Kastrup Copenhagen

5:45 pm - 2:50 pmOPO Porto-SFO San Francisco

29h 05m1 stop Kastrup Copenhagen

$509Scandinavian Airlines

Sat, Nov 7 - Fri, Nov 20

8:10 am - 7:00 amSFO San Francisco-OPO Porto

14h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:45 pm - 7:35 pmOPO Porto-SFO San Francisco

37h 50m1 stop Munich Franz Josef Strauss

$592Multiple Airlines

Tue, Oct 20 - Wed, Nov 4

2:05 pm - 4:00 pmSFO San Francisco-OPO Porto

17h 55m2 stops Los Angeles Madrid Barajas

8:20 am - 9:57 pmOPO Porto-SFO San Francisco

21h 37m2 stops Madrid Barajas Chicago O'Hare Intl

$596Iberia

Sun, Jan 10 - Wed, Feb 10

10:04 am - 11:45 amSAN San Diego-OPO Porto

17h 41m2 stops Chicago O'Hare Intl Madrid Barajas

8:20 am - 7:28 pmOPO Porto-SAN San Diego

19h 08m2 stops Madrid Barajas Chicago O'Hare Intl

$597Iberia

Wed, Feb 10 - Wed, Feb 17

7:00 am - 8:15 amSFO San Francisco-OPO Porto

17h 15m1 stop New York John F Kennedy Intl

10:15 am - 7:35 pmOPO Porto-SFO San Francisco

17h 20m1 stop New York John F Kennedy Intl

$604Delta

Sun, Nov 8 - Thu, Nov 19

9:10 am - 8:15 amSFO San Francisco-OPO Porto

15h 05m1 stop New York John F Kennedy Intl

10:15 am - 7:35 pmOPO Porto-SFO San Francisco

17h 20m1 stop New York John F Kennedy Intl

$604Delta

Wed, Nov 11 - Thu, Nov 19

7:25 pm - 11:15 amSFO San Francisco-OPO Porto

31h 50m1 stop Zurich

12:05 pm - 4:30 pmOPO Porto-SFO San Francisco

36h 25m1 stop Zurich

$608SWISS

Mon, Nov 2 - Tue, Nov 17

7:25 pm - 11:15 amSFO San Francisco-OPO Porto

31h 50m1 stop Zurich

12:05 pm - 4:30 pmOPO Porto-SFO San Francisco

36h 25m1 stop Zurich

$609SWISS

Mon, Nov 2 - Tue, Nov 17

10:24 pm - 7:40 amSMF Sacramento Intl-OPO Porto

25h 16m2 stops Charlotte Douglas Madrid Barajas

8:20 am - 12:22 amOPO Porto-SMF Sacramento Intl

24h 02m2 stops Madrid Barajas Chicago O'Hare Intl

$609American Airlines

Sat, Nov 7 - Fri, Nov 20

Cheap last minute flights

Enter your travel dates to find the best prices.

8:10 am - 11:35 amSFO San Francisco-OPO Porto

19h 25m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

1:00 pm - 4:15 pmOPO Porto-SFO San Francisco

35h 15m2 stops Barcelona-El Prat Zurich

$701Multiple Airlines

Tue, Sep 22 - Tue, Oct 6

8:10 am - 11:35 amSFO San Francisco-OPO Porto

19h 25m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

6:00 pm - 4:15 pmOPO Porto-SFO San Francisco

30h 15m3 stops Lisbon Humberto Delgado Barcelona-El Prat Zurich

$736Multiple Airlines

Tue, Sep 22 - Tue, Oct 6

10:54 am - 3:25 pmSAN San Diego-OPO Porto

20h 31m2 stops Los Angeles Paris Charles de Gaulle

5:55 am - 8:12 pmOPO Porto-SAN San Diego

22h 17m2 stops Paris Charles de Gaulle Minneapolis St Paul

$737Delta

Thu, Sep 24 - Wed, Oct 7

7:35 pm - 11:25 amSFO San Francisco-OPO Porto

31h 50m1 stop Zurich

12:15 pm - 4:15 pmOPO Porto-SFO San Francisco

36h 00m1 stop Zurich

$845SWISS

Tue, Sep 22 - Tue, Oct 6

1:40 pm - 7:10 pmSAN San Diego-OPO Porto

21h 30m1 stop Amsterdam Schiphol

7:10 pm - 11:50 amOPO Porto-SAN San Diego

24h 40m1 stop Amsterdam Schiphol

$866KLM

Thu, Sep 24 - Wed, Oct 7

1:40 pm - 10:15 pmSAN San Diego-OPO Porto

24h 35m1 stop Amsterdam Schiphol

5:55 am - 8:12 pmOPO Porto-SAN San Diego

22h 17m2 stops Paris Charles de Gaulle Minneapolis St Paul

$876Delta

Thu, Sep 24 - Wed, Oct 7

10:40 am - 11:25 amSAN San Diego-OPO Porto

40h 45m2 stops Chicago O'Hare Intl Zurich

8:40 am - 10:57 pmOPO Porto-SAN San Diego

22h 17m2 stops Zurich San Francisco

$876SWISS

Thu, Sep 24 - Wed, Oct 7

4:20 pm - 5:10 pmSFO San Francisco-OPO Porto

16h 50m1 stop Lisbon Humberto Delgado

10:30 pm - 2:35 pmOPO Porto-SFO San Francisco

24h 05m1 stop Lisbon Humberto Delgado

$912TAP AIR PORTUGAL

Tue, Sep 22 - Tue, Sep 29

4:20 pm - 8:25 pmSFO San Francisco-OPO Porto

20h 05m1 stop Lisbon Humberto Delgado

5:05 am - 1:35 pmOPO Porto-SFO San Francisco

16h 30m1 stop Lisbon Humberto Delgado

$912TAP AIR PORTUGAL

Tue, Sep 22 - Tue, Sep 29

5:01 pm - 6:20 pmSAN San Diego-OPO Porto

17h 19m2 stops Salt Lake City Amsterdam Schiphol

5:00 am - 11:50 amOPO Porto-SAN San Diego

14h 50m1 stop Amsterdam Schiphol

$935KLM

Wed, Sep 23 - Thu, Oct 1

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Scandinavian Airlines flights from California to Porto

Our best Scandinavian Airlines deals on California to Porto flight tickets

Scandinavian Airlines

Nov 7

SFO4:45 pmSan Francisco

34h 20m

1 stop

OPO11:05 amPorto

Nov 20

OPO5:45 pmPorto

29h 05m

1 stop

SFO2:50 pmSan Francisco

$476

Scandinavian Airlines

Nov 7

SFO4:45 pmSan Francisco

16h 00m

1 stop

OPO4:45 pmPorto

Nov 20

OPO5:45 pmPorto

29h 05m

1 stop

SFO2:50 pmSan Francisco

$509

Scandinavian Airlines

Oct 3

SFO10:29 amSan Francisco

23h 51m

2 stops

OPO6:20 pmPorto

Oct 13

OPO4:20 pmPorto

30h 20m

2 stops

SFO2:40 pmSan Francisco

$996

Iberia flights from California to Porto

Our best Iberia deals on California to Porto flight tickets

Iberia

Jan 10

SFO2:05 pmSan Francisco

17h 55m

2 stops

OPO4:00 pmPorto

Feb 10

OPO8:20 amPorto

21h 37m

2 stops

SFO9:57 pmSan Francisco

$596

Iberia

Feb 10

SAN10:04 amSan Diego

17h 41m

2 stops

OPO11:45 amPorto

Feb 17

OPO8:20 amPorto

19h 08m

2 stops

SAN7:28 pmSan Diego

$597

Iberia

Nov 10

SFO6:38 amSan Francisco

17h 02m

2 stops

OPO7:40 amPorto

Nov 17

OPO8:20 amPorto

22h 27m

2 stops

SFO10:47 pmSan Francisco

$610

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 11/7

4:45 pm-11:05 am

1 stop34h 20m

Porto

Fri 11/20

5:45 pm-2:50 pm

1 stop29h 05m

$476

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sat 11/7

4:45 pm-4:45 pm

1 stop16h 00m

Porto

Fri 11/20

5:45 pm-2:50 pm

1 stop29h 05m

$509

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 10/20

8:10 am-7:00 am

1 stop14h 50m

Porto

Wed 11/4

1:45 pm-7:35 pm

1 stop37h 50m

$592

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 1/10

2:05 pm-4:00 pm

2 stops17h 55m

Porto

Wed 2/10

8:20 am-9:57 pm

2 stops21h 37m

$596

San DiegoPorto

SAN San Diego - OPO Porto

SANOPO

San Diego

Wed 2/10

10:04 am-11:45 am

2 stops17h 41m

Porto

Wed 2/17

8:20 am-7:28 pm

2 stops19h 08m

$597

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Sun 11/8

7:00 am-8:15 am

1 stop17h 15m

Porto

Thu 11/19

10:15 am-7:35 pm

1 stop17h 20m

$604

Quickest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 11/11

9:10 am-8:15 am

1 stop15h 05m

Porto

Thu 11/19

10:15 am-7:35 pm

1 stop17h 20m

$604

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/2

7:25 pm-11:15 am

1 stop31h 50m

Porto

Tue 11/17

12:05 pm-4:30 pm

1 stop36h 25m

$608

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/2

7:25 pm-11:15 am

1 stop31h 50m

Porto

Tue 11/17

12:05 pm-4:30 pm

1 stop36h 25m

$609

SacramentoPorto

SMF Sacramento Intl - OPO Porto

SMFOPO

Sacramento Intl

Sat 11/7

10:24 pm-7:40 am

2 stops25h 16m

Porto

Fri 11/20

8:20 am-12:22 am

2 stops24h 02m

$609

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 $645. 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 $690.

How far in advance should I book a flight from California 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 $856 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 $781 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 56% 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

Best Price Found	$324
Fastest flight time	13h 10m
Direct flights	None

The best one-way flight to Porto from California in the past 72 hours is $324. The best round-trip flight deal from California to Porto found on momondo in the last 72 hours is $476.

The fastest flight from California to Porto takes 13h 10m

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

Search flight deals

Frequently asked questions about flying 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 September 2026, there are 11 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
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.2 2,377 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $460	Free Cancellation	Rating 7.4 1,986 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $476	Free Cancellation	Rating 7.8 1,575 reviews	Search KLM flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,590 reviews	Search Delta flights
Lufthansa	PriceFrom $544	Free Cancellation	Rating 6.8 8,237 reviews	Search Lufthansa flights
United Airlines	PriceFrom $562	Free Cancellation	Rating 7.4 10,220 reviews	Search United Airlines flights
SWISS	PriceFrom $623	Free Cancellation	Rating 7.5 2,079 reviews	Search SWISS flights
Turkish Airlines	PriceFrom $654	Free Cancellation	Rating 7.4 4,465 reviews	Search Turkish Airlines flights
Iberia	PriceFrom $681	Free Cancellation	Rating 7.0 3,254 reviews	Search Iberia flights
Air Canada	PriceFrom $830	Free Cancellation	Rating 7.1 11,658 reviews	Search Air Canada flights

Coimbra

Vila Nova de Gaia

Aveiro

Braga

Pinhao

Matosinhos

Esposende

Chaves

Viseu

Arcos de Valdevez

Espinho

Guimarães

Lamego

Ponte de Lima

Penafiel

Caminha

Baiao

Mira

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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Faro Airport

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Azores Airport

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Cheap flights from California to Porto from $324

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 12/28. 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

Iberia flights from California to Porto

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

What is the cheapest month to fly to Porto?

How far in advance should I book a flight from California 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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from California to Porto

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.

Popular cities in Portugal

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

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