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

Delta is the most popular carrier operating from Porto to California

When did momondo last update prices for flights from Porto Airport to California?

Prices for flights from Porto Airport to California are refreshed on a daily basis.

How many operators does momondo search for flights from Porto Airport to California?

The number of operators available for flights from Porto Airport to California is 2 as of January 2026.

How old do you have to be to fly from Porto Airport to California?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Porto Airport to California.

What documentation or ID do you need to fly to California?

The travel and health documents you'll need for your trip to California may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at California. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$325 Cheap Flights from Porto to California in 2026

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Find the cheapest flights from Porto to California

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 9:24 pm

OPO

LAX

23h 24m

2 stops

8:10 pm - 6:30 pm

LAX

OPO

15h 20m

1 stop

$532Multiple Airlines

sáb., feb. 28 - dom., mar. 15

11:55 am - 4:35 pm

OPO

LAX

36h 40m

1 stop

8:10 pm - 6:30 pm

LAX

OPO

15h 20m

1 stop

$549SWISS

sáb., feb. 28 - dom., mar. 15

12:30 pm - 8:10 pm

OPO

SFO

15h 40m

1 stop

7:00 am - 9:30 am

SFO

OPO

18h 30m

1 stop

$550Lufthansa

dom., feb. 15 - dom., mar. 1

6:00 am - 3:55 pm

OPO

SFO

17h 55m

1 stop

1:30 pm - 12:50 pm

SFO

OPO

15h 20m

1 stop

$551Lufthansa

jue., feb. 12 - lun., feb. 16

6:00 am - 8:30 pm

OPO

LAX

22h 30m

2 stops

8:45 am - 9:30 am

LAX

OPO

17h 45m

2 stops

$551United Airlines

sáb., mar. 7 - lun., mar. 23

6:00 am - 8:00 pm

OPO

SFO

22h 00m

1 stop

6:40 am - 9:45 am

SFO

OPO

19h 05m

2 stops

$552United Airlines

mié., abr. 15 - dom., abr. 19

4:20 pm - 11:45 am

OPO

SFO

27h 25m

1 stop

8:10 pm - 10:30 pm

SFO

OPO

18h 20m

1 stop

$553KLM

vie., may. 15 - lun., may. 18

5:00 am - 2:45 pm

OPO

LAX

17h 45m

1 stop

3:15 pm - 3:25 pm

LAX

OPO

16h 10m

1 stop

$555KLM

sáb., may. 2 - dom., may. 17

5:00 am - 5:50 pm

OPO

SFO

20h 50m

2 stops

11:05 am - 3:25 pm

SFO

OPO

20h 20m

2 stops

$558Delta

vie., may. 15 - lun., may. 18

5:00 am - 6:14 pm

OPO

LAX

21h 14m

2 stops

3:15 pm - 3:25 pm

LAX

OPO

16h 10m

1 stop

$560Delta

sáb., may. 2 - dom., may. 17

SWISS flights from Porto to California

Our best SWISS deals on Porto to California flight tickets

SWISS

Feb 28

OPO11:55 amPorto

36h 40m

1 stop

LAX4:35 pmLos Angeles

Mar 15

LAX8:10 pmLos Angeles

15h 20m

1 stop

OPO6:30 pmPorto

$549

SWISS

Mar 7

OPO11:55 amPorto

36h 40m

1 stop

LAX4:35 pmLos Angeles

Mar 23

LAX8:10 pmLos Angeles

32h 05m

1 stop

OPO11:15 amPorto

$559

SWISS

Feb 28

OPO11:55 amPorto

36h 40m

1 stop

LAX4:35 pmLos Angeles

Mar 15

LAX8:10 pmLos Angeles

32h 05m

1 stop

OPO11:15 amPorto

$566

United Airlines flights from Porto to California

Our best United Airlines deals on Porto to California flight tickets

United Airlines

Mar 7

OPO6:00 amPorto

22h 30m

2 stops

LAX8:30 pmLos Angeles

Mar 23

LAX8:45 amLos Angeles

17h 45m

2 stops

OPO9:30 amPorto

$551

United Airlines

Apr 15

OPO6:00 amPorto

22h 00m

1 stop

SFO8:00 pmSan Francisco

Apr 19

SFO6:40 amSan Francisco

19h 05m

2 stops

OPO9:45 amPorto

$552

United Airlines

Mar 4

OPO12:30 pmPorto

20h 00m

2 stops

LAX12:30 amLos Angeles

Mar 8

LAX11:45 amLos Angeles

14h 45m

1 stop

OPO9:30 amPorto

$553

Fly from

Fly to

Route

Depart

Return

Price

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

sáb. 2/28

6:00 am-9:24 pm

2 stops23h 24m

Los Angeles

dom. 3/15

8:10 pm-6:30 pm

1 stop15h 20m

$532

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

sáb. 2/28

11:55 am-4:35 pm

1 stop36h 40m

Los Angeles

dom. 3/15

8:10 pm-6:30 pm

1 stop15h 20m

$549

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

dom. 2/15

12:30 pm-8:10 pm

1 stop15h 40m

San Francisco

dom. 3/1

7:00 am-9:30 am

1 stop18h 30m

$550

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

jue. 2/12

6:00 am-3:55 pm

1 stop17h 55m

San Francisco

lun. 2/16

1:30 pm-12:50 pm

1 stop15h 20m

$551

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

sáb. 3/7

6:00 am-8:30 pm

2 stops22h 30m

Los Angeles

lun. 3/23

8:45 am-9:30 am

2 stops17h 45m

$551

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

mié. 4/15

6:00 am-8:00 pm

1 stop22h 00m

San Francisco

dom. 4/19

6:40 am-9:45 am

2 stops19h 05m

$552

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

vie. 5/15

4:20 pm-11:45 am

1 stop27h 25m

San Francisco

lun. 5/18

8:10 pm-10:30 pm

1 stop18h 20m

$553

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

sáb. 5/2

5:00 am-2:45 pm

1 stop17h 45m

Los Angeles

dom. 5/17

3:15 pm-3:25 pm

1 stop16h 10m

$555

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

vie. 5/15

5:00 am-5:50 pm

2 stops20h 50m

San Francisco

lun. 5/18

11:05 am-3:25 pm

2 stops20h 20m

$558

PortoLos Angeles

OPO - LAX

OPOLAX

Porto

sáb. 5/2

5:00 am-6:14 pm

2 stops21h 14m

Los Angeles

dom. 5/17

3:15 pm-3:25 pm

1 stop16h 10m

$560

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 Porto to California

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

What is the cheapest month to fly to California?

The month of February is another great option to travel to California, with average flight prices from Porto averaging around $801.

Can stopping save me money on Porto to California flights?

You could potentially save up to 17% on your flight if you consider stops on a Porto to California flight.

Cheap Porto to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to California

Fastest flight time	15h 15m
Direct flights	None

The fastest flight from Porto to California takes 15h 15m

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

Search flight deals

When did momondo last update prices for flights from Porto Airport to California?
Prices for flights from Porto Airport to California are refreshed on a daily basis.
How many operators does momondo search for flights from Porto Airport to California?
The number of operators available for flights from Porto Airport to California is 2 as of January 2026.
How old do you have to be to fly from Porto Airport to California?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Porto Airport to California.
What documentation or ID do you need to fly to California?
The travel and health documents you'll need for your trip to California may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at California. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Porto to California

Compare and see reviews for airlines that fly from Porto to California with momondo

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $634	Free Cancellation	Rating 7.1 2,130 reviews		Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $670	Free Cancellation	Rating 6.8 7,756 reviews		Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Porto to California?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Porto to California for you.

Can I find flights from Porto to California with flexible booking policies on momondo?

Flights from Porto to California with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Porto to California?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to California from Porto.

I’m not ready to book a flight from Porto to California right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Porto to California now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to California and let you know when they change.