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Cheap flights from California to Portugal from $231

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 Portugal departing on 5/3. 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
0 bags

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Find the cheapest flights from California to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
4:45 pm - 6:55 pm
LAX
-
OPO
18h 10m
1 stop
TAP AIR PORTUGAL Logo
7:00 am - 2:40 pm
OPO
-
LAX
15h 40m
1 stop
$431TAP AIR PORTUGAL
Tue, Feb 17 - Thu, Feb 26
TAP AIR PORTUGAL Logo
7:35 pm - 7:00 pm
SFO
-
OPO
15h 25m
1 stop
TAP AIR PORTUGAL Logo
9:15 pm - 2:35 pm
OPO
-
SFO
25h 20m
1 stop
$431TAP AIR PORTUGAL
Sat, Apr 4 - Mon, Apr 13
Lufthansa Logo
6:35 pm - 11:30 pm
SAN
-
LIS
21h 55m
1 stop
Lufthansa Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$448Lufthansa
Thu, Mar 12 - Tue, Mar 17
Lufthansa Logo
6:35 pm - 11:30 pm
SAN
-
LIS
21h 55m
1 stop
Lufthansa Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$449Lufthansa
Tue, Mar 10 - Thu, Mar 19
Multiple Airlines Logo
4:00 pm - 2:35 pm
SAN
-
LIS
39h 35m
2 stops
Multiple Airlines Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$457Multiple Airlines
Tue, Mar 10 - Thu, Mar 19
Multiple Airlines Logo
4:00 pm - 2:55 pm
LAX
-
OPO
15h 55m
1 stop
Multiple Airlines Logo
7:20 pm - 5:35 pm
OPO
-
LAX
29h 15m
1 stop
$465Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
SWISS Logo
8:10 pm - 6:35 pm
LAX
-
OPO
15h 25m
1 stop
SWISS Logo
7:20 pm - 5:35 pm
OPO
-
LAX
29h 15m
1 stop
$466SWISS
Mon, Mar 9 - Mon, Mar 23
SWISS Logo
7:10 pm - 6:30 pm
LAX
-
OPO
15h 20m
1 stop
SWISS Logo
8:40 am - 4:35 pm
OPO
-
LAX
15h 55m
1 stop
$471SWISS
Sun, Feb 22 - Sat, Mar 7
KLM Logo
1:40 pm - 6:20 pm
SAN
-
OPO
20h 40m
1 stop
KLM Logo
4:20 pm - 11:50 am
OPO
-
SAN
27h 30m
1 stop
$483KLM
Tue, Apr 14 - Mon, Apr 20
KLM Logo
2:00 pm - 10:30 am
SAN
-
OPO
36h 30m
1 stop
KLM Logo
4:10 pm - 1:05 pm
OPO
-
SAN
27h 55m
1 stop
$486KLM
Sat, Mar 7 - Mon, Mar 23

British Airways flights from California to Portugal

Our best British Airways deals on California to Portugal flight tickets
British Airways
Feb 23
SAN1:09 pmSan Diego
24h 46m
2 stops
LIS9:55 pmLisbon Humberto Delgado
Mar 2
LIS11:05 amLisbon Humberto Delgado
18h 54m
1 stop
SAN9:59 pmSan Diego
$495
British Airways
Mar 3
SAN6:30 amSan Diego
18h 35m
1 stop
LIS9:05 amLisbon Humberto Delgado
Mar 13
LIS11:05 amLisbon Humberto Delgado
18h 01m
1 stop
SAN10:06 pmSan Diego
$497
British Airways
Apr 17
SAN3:21 pmSan Diego
23h 49m
2 stops
LIS11:10 pmLisbon Humberto Delgado
Apr 25
LIS6:55 pmLisbon Humberto Delgado
28h 00m
1 stop
SAN2:55 pmSan Diego
$505

Air Canada flights from California to Portugal

Our best Air Canada deals on California to Portugal flight tickets
Air Canada
Jan 28
LAX8:30 amLos Angeles
20h 50m
2 stops
LIS1:20 pmLisbon Humberto Delgado
Feb 6
LIS10:55 amLisbon Humberto Delgado
32h 57m
2 stops
LAX11:52 amLos Angeles
$499
Air Canada
Jan 28
LAX8:30 amLos Angeles
20h 50m
2 stops
LIS1:20 pmLisbon Humberto Delgado
Feb 6
LIS10:55 amLisbon Humberto Delgado
32h 57m
2 stops
LAX11:52 amLos Angeles
$500
Air Canada
Jan 29
LAX8:30 amLos Angeles
16h 50m
1 stop
LIS9:20 amLisbon Humberto Delgado
Feb 6
LIS10:55 amLisbon Humberto Delgado
36h 31m
2 stops
LAX3:26 pmLos Angeles
$515

momondo Fare Finder

 
Customize your flight search to find flights from California to Portugal 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 January 27, 2026.
Use the filters below to find and compare flights from California to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Tue 2/17

4:45 pm-6:55 pm

1 stop18h 10m

Porto

Thu 2/26

7:00 am-2:40 pm

1 stop15h 40m

$431

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 4/4

7:35 pm-7:00 pm

1 stop15h 25m

Porto

Mon 4/13

9:15 pm-2:35 pm

1 stop25h 20m

$431

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 3/12

6:35 pm-11:30 pm

1 stop21h 55m

Lisbon Humberto Delgado

Tue 3/17

6:10 am-4:45 pm

1 stop17h 35m

$448

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 3/10

6:35 pm-11:30 pm

1 stop21h 55m

Lisbon Humberto Delgado

Thu 3/19

6:10 am-4:45 pm

1 stop17h 35m

$449

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 3/10

4:00 pm-2:35 pm

2 stops39h 35m

Lisbon Humberto Delgado

Thu 3/19

6:10 am-4:45 pm

1 stop17h 35m

$457

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/9

4:00 pm-2:55 pm

1 stop15h 55m

Porto

Mon 3/16

7:20 pm-5:35 pm

1 stop29h 15m

$465

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Mon 3/9

8:10 pm-6:35 pm

1 stop15h 25m

Porto

Mon 3/23

7:20 pm-5:35 pm

1 stop29h 15m

$466

Los AngelesPorto

LAX - OPO

LAXOPO

Los Angeles

Sun 2/22

7:10 pm-6:30 pm

1 stop15h 20m

Porto

Sat 3/7

8:40 am-4:35 pm

1 stop15h 55m

$471

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 4/14

1:40 pm-6:20 pm

1 stop20h 40m

Porto

Mon 4/20

4:20 pm-11:50 am

1 stop27h 30m

$483

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 3/7

2:00 pm-10:30 am

1 stop36h 30m

Porto

Mon 3/23

4:10 pm-1:05 pm

1 stop27h 55m

$486

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 Portugal from

How to get the cheapest flight ticket from California to Portugal

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 Portugal?

The cheapest month to fly to Portugal from California is in January. Flight prices, which tend to average around $591, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from California during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $614.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Thursday is the cheapest day to fly to Portugal from California. The lowest ticket price found for a Thursday departure recently was $515. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $774.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from California to Portugal during this time can be as low as $537. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $657 per ticket.

What is the cheapest California to Portugal flight route?

Fly from Los Angeles to Lisbon Humberto Delgado for the best California - Portugal flight prices

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $796 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from California for as low as $742 on momondo.

What cabin class options are available on California to Portugal flights?

There are 3 cabin classes available to choose from on California to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on California to Portugal flights?

You could potentially save up to 20% on your flight if you consider stops on a California to Portugal flight.

Cheap California to Portugal flight deals and tips

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

Best Price Found

$353

Fastest flight time

9h 45m

Direct flights

Tue, Wed, Thu, Sat and Sun

Airports in Portugal

99 airports
The best one-way flight to Portugal from California in the past 72 hours is $353. The best round-trip flight deal from California to Portugal found on momondo in the last 72 hours is $548.
The fastest flight from California to Portugal takes 9h 45m
Direct flights go from California to Portugal on Tuesday, Wednesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
There are 99 airports in Portugal. From California there are direct flights to Lisbon Humberto Delgado (LIS).
Search flight deals

  • When did momondo last update prices for flights from California to Portugal?

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

  • How many operators does momondo search for flights from California to Portugal?

  • How old do you have to be to fly from California to Portugal?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from California to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from California to Portugal?

Best airlines flying from California to Portugal

Compare and see reviews for airlines that fly from California to Portugal with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $262Free CancellationRating
7.6
1,863 reviews
Search SWISS flights
LEVELPriceFrom $263Free CancellationRating
0.0
Search LEVEL flights
IberiaPriceFrom $309Free CancellationRating
7.0
3,099 reviews
Search Iberia flights
KLMPriceFrom $366Free CancellationRating
7.7
1,443 reviews
Search KLM flights
Scandinavian AirlinesPriceFrom $385Free CancellationRating
7.3
1,672 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $437Free CancellationRating
6.8
7,749 reviews
Search Lufthansa flights
VuelingPriceFrom $452Free CancellationRating
7.1
1,237 reviews
Search Vueling flights
Air FrancePriceFrom $473Free CancellationRating
7.4
1,528 reviews
Search Air France flights
DeltaPriceFrom $484Free CancellationRating
7.9
8,123 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom $501Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from California to Portugal. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for California to Portugal flights to just show those with flexible booking policies.

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

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 Portugal from California.

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

Yes. momondo can track prices for California to Portugal flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Portugal

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