Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from San Diego to Portugal 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 San Diego to Portugal departing on 1/17. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Diego to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:52 am - 9:20 am
SAN
-
LIS
38h 28m2 stops
United Airlines Logo
6:10 am - 3:45 pm
LIS
-
SAN
17h 35m1 stop
$470United Airlines
Sat, Jan 24 - Wed, Feb 11
Multiple Airlines Logo
4:10 pm - 9:20 am
SAN
-
LIS
33h 10m2 stops
Multiple Airlines Logo
2:10 pm - 3:45 pm
LIS
-
SAN
33h 35m1 stop
$478Multiple Airlines
Sat, Jan 10 - Sat, Jan 24
United Airlines Logo
6:30 am - 8:10 am
SAN
-
LIS
17h 40m2 stops
United Airlines Logo
6:10 am - 3:45 pm
LIS
-
SAN
17h 35m1 stop
$480United Airlines
Mon, Jan 12 - Wed, Jan 28
Lufthansa Logo
9:55 am - 1:20 pm
SAN
-
LIS
19h 25m2 stops
Lufthansa Logo
6:10 am - 3:45 pm
LIS
-
SAN
17h 35m1 stop
$483Lufthansa
Sat, Jan 24 - Wed, Feb 11
Delta Logo
7:05 am - 10:30 am
SAN
-
OPO
19h 25m2 stops
Delta Logo
5:00 am - 10:32 pm
OPO
-
SAN
25h 32m2 stops
$492Delta
Sat, Jan 24 - Sun, Feb 1
Lufthansa Logo
11:10 am - 12:50 pm
SAN
-
OPO
17h 40m2 stops
Lufthansa Logo
6:00 am - 8:49 pm
OPO
-
SAN
22h 49m2 stops
$493Lufthansa
Thu, Jan 15 - Thu, Jan 22
Delta Logo
9:45 am - 3:25 pm
SAN
-
OPO
21h 40m2 stops
Delta Logo
5:00 am - 10:32 pm
OPO
-
SAN
25h 32m2 stops
$498Delta
Sat, Jan 17 - Sun, Feb 1
British Airways Logo
3:12 pm - 7:15 pm
SAN
-
OPO
20h 03m2 stops
British Airways Logo
8:20 am - 10:26 pm
OPO
-
SAN
22h 06m2 stops
$501British Airways
Sat, Jan 24 - Sun, Feb 1
British Airways Logo
6:20 am - 9:55 am
SAN
-
FAO
43h 35m2 stops
British Airways Logo
7:00 pm - 4:10 pm
FAO
-
SAN
29h 10m1 stop
$671British Airways
Thu, Jan 15 - Thu, Jan 29
Air Canada Logo
6:30 am - 3:45 pm
SAN
-
FAO
25h 15m3 stops
Air Canada Logo
6:05 am - 10:37 pm
FAO
-
SAN
24h 32m3 stops
$845Air Canada
Thu, Jan 15 - Thu, Jan 29

KLM flights from San Diego to Portugal

Our best KLM deals on San Diego to Portugal flight tickets
KLM
Mar 10
SAN3:00 pmSan Diego
24h 25m
1 stop
OPO10:25 pmPorto
Mar 20
OPO11:15 amPorto
32h 50m
1 stop
SAN1:05 pmSan Diego
$483
Find similar
KLM
Jan 15
SAN9:45 amSan Diego
25h 35m
2 stops
FAO7:20 pmFaro
Jan 29
FAO7:05 pmFaro
31h 03m
2 stops
SAN6:08 pmSan Diego
$497
Find similar
KLM
Apr 7
SAN7:00 amSan Diego
17h 00m
1 stop
LIS8:00 amLisbon Humberto Delgado
Apr 22
LIS7:45 pmLisbon Humberto Delgado
24h 05m
1 stop
SAN11:50 amSan Diego
$546
Find similar

United Airlines flights from San Diego to Portugal

Our best United Airlines deals on San Diego to Portugal flight tickets
United Airlines
Jan 24
SAN10:52 amSan Diego
38h 28m
2 stops
LIS9:20 amLisbon Humberto Delgado
Feb 11
LIS6:10 amLisbon Humberto Delgado
17h 35m
1 stop
SAN3:45 pmSan Diego
$470
Find similar
United Airlines
Jan 12
SAN6:30 amSan Diego
17h 40m
2 stops
LIS8:10 amLisbon Humberto Delgado
Jan 28
LIS6:10 amLisbon Humberto Delgado
17h 35m
1 stop
SAN3:45 pmSan Diego
$480
Find similar
United Airlines
Jan 12
SAN7:00 amSan Diego
17h 10m
1 stop
LIS8:10 amLisbon Humberto Delgado
Jan 28
LIS6:10 amLisbon Humberto Delgado
17h 35m
1 stop
SAN3:45 pmSan Diego
$481
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego 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 December 10, 2025.
Use the filters below to find and compare flights from San Diego to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sat 1/24

10:52 am-9:20 am

2 stops38h 28m

Lisbon Humberto Delgado

Wed 2/11

6:10 am-3:45 pm

1 stop17h 35m

$470

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sat 1/10

4:10 pm-9:20 am

2 stops33h 10m

Lisbon Humberto Delgado

Sat 1/24

2:10 pm-3:45 pm

1 stop33h 35m

$478

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 1/12

6:30 am-8:10 am

2 stops17h 40m

Lisbon Humberto Delgado

Wed 1/28

6:10 am-3:45 pm

1 stop17h 35m

$480

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sat 1/24

9:55 am-1:20 pm

2 stops19h 25m

Lisbon Humberto Delgado

Wed 2/11

6:10 am-3:45 pm

1 stop17h 35m

$483

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 1/24

7:05 am-10:30 am

2 stops19h 25m

Porto

Sun 2/1

5:00 am-10:32 pm

2 stops25h 32m

$492

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 1/15

11:10 am-12:50 pm

2 stops17h 40m

Porto

Thu 1/22

6:00 am-8:49 pm

2 stops22h 49m

$493

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 1/17

9:45 am-3:25 pm

2 stops21h 40m

Porto

Sun 2/1

5:00 am-10:32 pm

2 stops25h 32m

$498

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 1/24

3:12 pm-7:15 pm

2 stops20h 03m

Porto

Sun 2/1

8:20 am-10:26 pm

2 stops22h 06m

$501

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Thu 1/15

6:20 am-9:55 am

2 stops43h 35m

Faro

Thu 1/29

7:00 pm-4:10 pm

1 stop29h 10m

$671

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Thu 1/15

6:30 am-3:45 pm

3 stops25h 15m

Faro

Thu 1/29

6:05 am-10:37 pm

3 stops24h 32m

$845

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portugal from

How to get the cheapest flight ticket from San Diego 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 San Diego is in November. Flight prices, which tend to average around $641, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from San Diego during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $698.

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

According to our data, Wednesday is the cheapest day to fly to Portugal from San Diego. The lowest ticket price found for a Wednesday departure recently was $878. 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 $1,214.

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 at noon. Flights from San Diego to Portugal during this time can be as low as $888. In the morning is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,071 per ticket.

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

You are more likely to see cheaper flights to Portugal from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $906 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from San Diego for as low as $752 on momondo.

Can stopping save me money on San Diego to Portugal flights?

You could potentially save up to 2% on your flight if you consider stops on a San Diego to Portugal flight.

Cheap San Diego to Portugal flight deals and tips

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

Fastest flight time

14h 55m

Direct flights

None
The fastest flight from San Diego to Portugal takes 14h 55m
There are no direct flights from San Diego to Portugal. There are no popular flight routes from San Diego to Portugal.
Search flight deals

  • When did momondo last update prices for flights from San Diego Airport to Portugal?

    Prices for flights from San Diego Airport to Portugal refresh daily.

  • How many operators does momondo search for flights from San Diego Airport to Portugal?

  • How old do you have to be to fly from San Diego Airport to Portugal?

    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 San Diego Airport to Portugal.

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

    The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from San Diego to Portugal

Compare and see reviews for airlines that fly from San Diego to Portugal with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $549Free CancellationRating
6.8
7,624 reviews
Search Lufthansa flights
KLMPriceFrom $555Free CancellationRating
7.7
1,432 reviews
Search KLM flights
IberiaPriceFrom $565Free CancellationRating
7.0
3,045 reviews
Search Iberia flights
Virgin AtlanticPriceFrom $565Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $586Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
British AirwaysPriceFrom $596Free CancellationRating
6.7
7,573 reviews
Search British Airways flights
Air CanadaPriceFrom $601Free CancellationRating
7.1
10,514 reviews
Search Air Canada flights
American AirlinesPriceFrom $621Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights

Why use momondo?

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

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

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

All flight searches from San Diego to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Diego to Portugal?

momondo provides multiple filters to help you find the best flight to Portugal from San Diego. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Portugal from San Diego. 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 Portugal 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 1/9
Fri 1/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $364
Flights to Portofrom $332
Flights to Funchalfrom $415
Flights to Farofrom $404
Flights to Ponta Delgadafrom $403
Flights to Lajesfrom $484
Flights to Hortafrom $576
Flights to Pico Islandfrom $562
Flights to Porto Santofrom $554
Flights to Velasfrom $612