How does KAYAK find such low prices on flights from California to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Porto.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from California is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from California to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to California with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$271 CHEAP FLIGHTS from California to Porto

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Cheap Flights from California to Porto

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from California to Porto

Sun, Oct 18 - Tue, Nov 3

11:10 am - 6:50 amSFO San Francisco-OPO Porto

35h 40m1 stop Montreal Pierre Elliott Trudeau Intl

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

36h 25m1 stop Zurich

$576Multiple Airlines

Sun, Nov 15 - Wed, Nov 25

6:15 am - 7:40 amSAN San Diego-OPO Porto

17h 25m2 stops Dallas/Fort Worth Madrid Barajas

8:20 am - 11:47 pmOPO Porto-SAN San Diego

23h 27m2 stops Madrid Barajas Chicago O'Hare Intl

$592Iberia

Mon, Oct 19 - Wed, Nov 4

11:10 am - 7:00 amSFO San Francisco-OPO Porto

35h 50m1 stop Montreal Pierre Elliott Trudeau Intl

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

37h 50m1 stop Munich Franz Josef Strauss

$597Multiple Airlines

Sun, Nov 15 - Wed, Nov 25

10:30 pm - 9:30 amSAN San Diego-OPO Porto

27h 00m2 stops Chicago O'Hare Intl Newark

12:35 pm - 9:22 pmOPO Porto-SAN San Diego

16h 47m1 stop Newark

$609United Airlines

Tue, Nov 10 - Tue, Nov 17

7:00 am - 9:30 amSFO San Francisco-OPO Porto

18h 30m1 stop Newark

12:35 pm - 8:10 pmOPO Porto-SFO San Francisco

15h 35m1 stop Frankfurt am Main

$611United Airlines

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

$611SWISS

Wed, Nov 4 - Wed, Nov 18

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

$618SWISS

Tue, Nov 3 - Tue, Nov 17

10:55 pm - 8:15 amSFO San Francisco-OPO Porto

25h 20m1 stop New York John F Kennedy Intl

5:00 am - 11:45 amOPO Porto-SFO San Francisco

14h 45m1 stop Amsterdam Schiphol

$624Delta

Tue, Oct 13 - Thu, Oct 22

7:00 am - 10:30 amSFO San Francisco-OPO Porto

19h 30m1 stop New York John F Kennedy Intl

1:25 pm - 12:34 amOPO Porto-SFO San Francisco

19h 09m1 stop New York John F Kennedy Intl

$625Delta

Tue, Oct 13 - Tue, Oct 20

7:00 am - 10:30 amSFO San Francisco-OPO Porto

19h 30m1 stop New York John F Kennedy Intl

7:00 pm - 11:45 amOPO Porto-SFO San Francisco

24h 45m1 stop Amsterdam Schiphol

$629KLM

Recent last minute flight deals from California to Porto

Sun, Sep 20 - Mon, Sep 28

8:10 am - 4:10 pmSFO San Francisco-OPO Porto

24h 00m2 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat

10:05 pm - 8:47 pmOPO Porto-SFO San Francisco

30h 42m2 stops Barcelona-El Prat Montreal Pierre Elliott Trudeau Intl

$741Multiple Airlines

Sun, Sep 20 - Mon, Sep 28

8:10 am - 10:55 pmSFO San Francisco-OPO Porto

30h 45m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat Frankfurt am Main

10:05 pm - 8:47 pmOPO Porto-SFO San Francisco

30h 42m2 stops Barcelona-El Prat Montreal Pierre Elliott Trudeau Intl

$906Multiple Airlines

Sun, Sep 20 - Mon, Sep 28

5:55 pm - 7:40 amSFO San Francisco-OPO Porto

29h 45m1 stop Madrid Barajas

10:05 pm - 1:50 pmOPO Porto-SFO San Francisco

23h 45m2 stops Barcelona-El Prat London Heathrow

$955Iberia

Sun, Sep 20 - Thu, Sep 24

4:40 pm - 8:35 pmLAX Los Angeles-OPO Porto

19h 55m1 stop Lisbon Humberto Delgado

10:30 pm - 2:35 pmOPO Porto-LAX Los Angeles

24h 05m1 stop Lisbon Humberto Delgado

$974TAP AIR PORTUGAL

Sun, Sep 20 - Thu, Sep 24

4:40 pm - 5:00 pmLAX Los Angeles-OPO Porto

16h 20m1 stop Lisbon Humberto Delgado

9:15 pm - 2:35 pmOPO Porto-LAX Los Angeles

25h 20m1 stop Lisbon Humberto Delgado

$974TAP AIR PORTUGAL

Thu, Sep 17 - Sat, Sep 26

2:05 pm - 9:45 amSFO San Francisco-OPO Porto

35h 40m1 stop Newark

6:00 am - 8:36 pmOPO Porto-SFO San Francisco

22h 36m2 stops Frankfurt am Main Los Angeles

$984United Airlines

Sun, Sep 20 - Mon, Sep 28

8:10 pm - 10:00 pmSFO San Francisco-OPO Porto

17h 50m1 stop Paris Charles de Gaulle

7:55 pm - 11:45 amOPO Porto-SFO San Francisco

23h 50m1 stop Amsterdam Schiphol

$992KLM

Tue, Sep 15 - Wed, Sep 30

10:30 pm - 7:00 amSAN San Diego-OPO Porto

24h 30m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

11:20 am - 10:41 pmOPO Porto-SAN San Diego

43h 21m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,045Air Canada

Wed, Sep 16 - Sat, Sep 26

12:45 am - 6:55 amSFO San Francisco-OPO Porto

22h 10m2 stops Houston George Bush Intcntl Newark

6:00 am - 8:36 pmOPO Porto-SFO San Francisco

22h 36m2 stops Frankfurt am Main Los Angeles

$1,081United Airlines

Tue, Sep 15 - Tue, Oct 6

7:05 am - 7:40 amLAX Los Angeles-OPO Porto

16h 35m2 stops New York John F Kennedy Intl Madrid Barajas

8:20 am - 6:25 pmOPO Porto-LAX Los Angeles

18h 05m2 stops Madrid Barajas London Heathrow

$2,392Iberia

Useful Info

Low season	January
High season	July
Cheapest flight	$271

Best time to beat the crowds with an average 26% drop in price.

Most popular time to fly with an average 29% increase in price.

Flight from Los Angeles to Porto

How does KAYAK find such low prices on flights from California to Porto?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from California is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from California to Porto?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to California with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Porto?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Guimarães

Lamego

Matosinhos

Viseu

Chaves

Pinhao

Esposende

Santa Maria da Feira

Ponte de Lima

Espinho

Baiao

Arcos de Valdevez

Caminha

Mesao Frio

Mira

Amares

Penafiel

Curia

More options for your flight to Porto

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Porto with a hotel stay or car rental

OPO

$271 Find Cheap Flights from California to Porto - Compare and Save

Cheap Flights from California to Porto

Recent round-trip flight deals from California to Porto

Recent one-way flight deals from California to Porto

Recent last minute flight deals from California to Porto

Good to know

Low season

High season

Cheapest flight

FAQs for booking flights from California to Porto

Traveling to a place near Porto?

More options for your flight to Porto

Complete your trip to Porto with a hotel stay or car rental

Information on the airport you'll fly into in Porto

Cabin class types available on flights to California

Find direct flights for Porto

Flights from domestic origins to Porto

Flights to other popular destinations

Find deals for your return flight