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Cheap flights from California to Porto from $316

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 8/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
4:55 pm - 5:00 pm
LAX
-
OPO
16h 05m
1 stop
TAP AIR PORTUGAL Logo
9:15 pm - 1:55 pm
OPO
-
LAX
24h 40m
1 stop
$641TAP AIR PORTUGAL
Sat, Sep 19 - Sat, Oct 17
TAP AIR PORTUGAL Logo
4:20 pm - 5:10 pm
SFO
-
OPO
16h 50m
1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 2:35 pm
OPO
-
SFO
24h 05m
1 stop
$641TAP AIR PORTUGAL
Tue, Sep 22 - Tue, Sep 29
TAP AIR PORTUGAL Logo
4:55 pm - 8:25 pm
LAX
-
OPO
19h 30m
1 stop
TAP AIR PORTUGAL Logo
9:15 pm - 1:55 pm
OPO
-
LAX
24h 40m
1 stop
$642TAP AIR PORTUGAL
Sat, Oct 3 - Sat, Oct 10
SWISS Logo
8:10 pm - 6:30 pm
LAX
-
OPO
15h 20m
1 stop
SWISS Logo
7:20 pm - 4:35 pm
OPO
-
LAX
29h 15m
1 stop
$720SWISS
Mon, Oct 26 - Mon, Nov 2
Multiple Airlines Logo
8:30 am - 12:05 pm
LAX
-
OPO
20h 35m
2 stops
Multiple Airlines Logo
7:20 pm - 4:35 pm
OPO
-
LAX
29h 15m
1 stop
$722Multiple Airlines
Mon, Oct 26 - Mon, Nov 2
Multiple Airlines Logo
7:40 am - 6:30 pm
LAX
-
OPO
26h 50m
2 stops
Multiple Airlines Logo
1:45 pm - 3:15 pm
OPO
-
LAX
33h 30m
1 stop
$726Multiple Airlines
Tue, Dec 1 - Mon, Dec 7
Delta Logo
3:05 pm - 3:25 pm
SAN
-
OPO
17h 20m
1 stop
Delta Logo
5:00 am - 12:10 pm
OPO
-
SAN
15h 10m
1 stop
$746Delta
Tue, Oct 27 - Tue, Nov 3
Delta Logo
3:05 pm - 3:25 pm
SAN
-
OPO
17h 20m
1 stop
Delta Logo
5:00 am - 12:10 pm
OPO
-
SAN
15h 10m
1 stop
$747Delta
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
8:55 am - 9:30 am
SMF
-
OPO
16h 35m
2 stops
United Airlines Logo
6:00 am - 9:10 pm
OPO
-
SMF
23h 10m
2 stops
$749United Airlines
Mon, Nov 16 - Thu, Nov 19
United Airlines Logo
11:00 am - 9:30 am
SMF
-
OPO
15h 30m
2 stops
United Airlines Logo
12:35 pm - 9:37 pm
OPO
-
SMF
17h 02m
1 stop
$754United Airlines
Wed, Oct 28 - Wed, Nov 11

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Lufthansa flights from California to Porto

Our best Lufthansa deals on California to Porto flight tickets
Lufthansa
Oct 28
LAX6:30 pmLos Angeles
22h 25m
1 stop
OPO11:55 pmPorto
Nov 4
OPO1:45 pmPorto
33h 30m
1 stop
LAX3:15 pmLos Angeles
$741
Lufthansa
Nov 1
SMF11:00 amSacramento Intl
17h 50m
2 stops
OPO12:50 pmPorto
Nov 15
OPO6:00 amPorto
24h 41m
2 stops
SMF10:41 pmSacramento Intl
$786
Lufthansa
Nov 1
SMF11:00 amSacramento Intl
17h 50m
2 stops
OPO12:50 pmPorto
Nov 8
OPO6:15 amPorto
22h 55m
2 stops
SMF9:10 pmSacramento Intl
$792

TAP AIR PORTUGAL flights from California to Porto

Our best TAP AIR PORTUGAL deals on California to Porto flight tickets
TAP AIR PORTUGAL
Sep 19
LAX4:55 pmLos Angeles
16h 05m
1 stop
OPO5:00 pmPorto
Oct 17
OPO9:15 pmPorto
24h 40m
1 stop
LAX1:55 pmLos Angeles
$641
TAP AIR PORTUGAL
Oct 3
LAX4:55 pmLos Angeles
19h 30m
1 stop
OPO8:25 pmPorto
Oct 10
OPO9:15 pmPorto
24h 40m
1 stop
LAX1:55 pmLos Angeles
$642
TAP AIR PORTUGAL
Sep 22
LAX4:45 pmLos Angeles
16h 15m
1 stop
OPO5:00 pmPorto
Oct 13
OPO5:05 amPorto
17h 40m
1 stop
LAX2:45 pmLos Angeles
$643

momondo Fare Finder

 
Customize your flight search to find flights from California to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 16, 2026.
Use the filters below to find and compare flights from California to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 9/19

4:55 pm-5:00 pm

1 stop16h 05m

Porto

Sat 10/17

9:15 pm-1:55 pm

1 stop24h 40m

$641

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 9/22

4:20 pm-5:10 pm

1 stop16h 50m

Porto

Tue 9/29

10:30 pm-2:35 pm

1 stop24h 05m

$641

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sat 10/3

4:55 pm-8:25 pm

1 stop19h 30m

Porto

Sat 10/10

9:15 pm-1:55 pm

1 stop24h 40m

$642

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 10/26

8:10 pm-6:30 pm

1 stop15h 20m

Porto

Mon 11/2

7:20 pm-4:35 pm

1 stop29h 15m

$720

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 10/26

8:30 am-12:05 pm

2 stops20h 35m

Porto

Mon 11/2

7:20 pm-4:35 pm

1 stop29h 15m

$722

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 12/1

7:40 am-6:30 pm

2 stops26h 50m

Porto

Mon 12/7

1:45 pm-3:15 pm

1 stop33h 30m

$726
Quickest round-trip

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

3:05 pm-3:25 pm

1 stop17h 20m

Porto

Tue 11/3

5:00 am-12:10 pm

1 stop15h 10m

$746

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/27

3:05 pm-3:25 pm

1 stop17h 20m

Porto

Tue 11/3

5:00 am-12:10 pm

1 stop15h 10m

$747

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Mon 11/16

8:55 am-9:30 am

2 stops16h 35m

Porto

Thu 11/19

6:00 am-9:10 pm

2 stops23h 10m

$749

SacramentoPorto

SMF - OPO

SMFOPO

Sacramento Intl

Wed 10/28

11:00 am-9:30 am

2 stops15h 30m

Porto

Wed 11/11

12:35 pm-9:37 pm

1 stop17h 02m

$754

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

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

What is the cheapest month to fly to Porto?

The month of January is, on average, the cheapest month to fly to Porto from California, with most prices found around $251. If you aren’t able to travel during the month of January, then book flights to Porto from California during February instead. Flights to Porto in February, while not as cheap as those in January, still average around $366.

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 $859 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 $792 on momondo.

Can stopping save me money on California to Porto flights?

You could potentially save up to 3% 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

13h 05m

Direct flights

None
The fastest flight from California to Porto takes 13h 05m
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?

  • 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
KLMPriceFrom $366Free CancellationRating
7.8
1,541 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $431Free CancellationRating
7.2
2,339 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $480Free CancellationRating
7.4
1,885 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $533Free CancellationRating
6.7
8,121 reviews
Search British Airways flights
DeltaPriceFrom $533Free CancellationRating
7.8
8,472 reviews
Search Delta flights
LufthansaPriceFrom $544Free CancellationRating
6.8
8,140 reviews
Search Lufthansa flights
IberiaPriceFrom $545Free CancellationRating
7.0
3,257 reviews
Search Iberia flights
United AirlinesPriceFrom $562Free CancellationRating
7.4
9,998 reviews
Search United Airlines flights
SWISSPriceFrom $623Free CancellationRating
7.5
2,008 reviews
Search SWISS flights
Turkish AirlinesPriceFrom $654Free CancellationRating
7.4
4,448 reviews
Search Turkish Airlines flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Lamego
Esposende
Chaves
Pinhao
Arcos de Valdevez
Guimarães
Viseu
Espinho
Ponte de Lima
Mesao Frio
Penafiel
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

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