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Cheap flights from San Diego to Portugal from $351

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 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Diego to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:40 pm - 11:00 pm
SAN
-
LIS
19h 20m
1 stop
Multiple Airlines Logo
8:25 am - 8:43 pm
LIS
-
SAN
20h 18m
2 stops
$662Multiple Airlines
Tue, Apr 21 - Tue, May 5
British Airways Logo
7:40 pm - 11:00 pm
SAN
-
LIS
19h 20m
1 stop
British Airways Logo
6:45 pm - 2:55 pm
LIS
-
SAN
28h 10m
1 stop
$666British Airways
Tue, Apr 21 - Tue, May 5
Iberia Logo
6:15 am - 9:05 am
SAN
-
LIS
18h 50m
1 stop
Iberia Logo
8:25 am - 8:43 pm
LIS
-
SAN
20h 18m
2 stops
$670Iberia
Tue, Apr 21 - Tue, May 5
Lufthansa Logo
11:00 am - 10:45 pm
SAN
-
LIS
27h 45m
2 stops
Lufthansa Logo
6:15 am - 3:25 pm
LIS
-
SAN
17h 10m
1 stop
$706Lufthansa
Tue, Apr 14 - Wed, Apr 22
Lufthansa Logo
5:15 pm - 11:25 pm
SAN
-
OPO
22h 10m
1 stop
Lufthansa Logo
6:20 am - 3:25 pm
OPO
-
SAN
17h 05m
1 stop
$777Lufthansa
Tue, Apr 21 - Tue, Apr 28
KLM Logo
7:00 am - 10:30 am
SAN
-
OPO
19h 30m
1 stop
KLM Logo
5:00 am - 12:05 pm
OPO
-
SAN
15h 05m
1 stop
$790KLM
Tue, Aug 18 - Tue, Jan 12
Delta Logo
1:05 pm - 3:25 pm
SAN
-
OPO
18h 20m
2 stops
Delta Logo
5:00 am - 6:00 pm
OPO
-
SAN
21h 00m
2 stops
$791Delta
Wed, Sep 23 - Fri, Oct 2
Delta Logo
9:47 am - 3:25 pm
SAN
-
OPO
21h 38m
2 stops
Delta Logo
5:00 am - 3:55 pm
OPO
-
SAN
18h 55m
2 stops
$817Delta
Tue, Apr 21 - Tue, Apr 28
KLM Logo
1:37 pm - 7:25 pm
SAN
-
FAO
21h 48m
2 stops
KLM Logo
8:15 pm - 6:21 pm
FAO
-
SAN
30h 06m
2 stops
$1,050KLM
Mon, Jun 1 - Tue, Jun 9
United Airlines Logo
6:40 am - 9:50 am
SAN
-
FAO
19h 10m
2 stops
United Airlines Logo
11:40 am - 7:52 pm
FAO
-
SAN
16h 12m
1 stop
$1,089United Airlines
Mon, Jun 1 - Tue, Jun 9

Lufthansa flights from San Diego to Portugal

Our best Lufthansa deals on San Diego to Portugal flight tickets
Lufthansa
Apr 7
SAN11:00 amSan Diego
27h 45m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 22
LIS6:15 amLisbon Humberto Delgado
17h 10m
1 stop
SAN3:25 pmSan Diego
$656
Lufthansa
Apr 7
SAN4:21 pmSan Diego
22h 24m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 23
LIS5:05 amLisbon Humberto Delgado
24h 17m
2 stops
SAN9:22 pmSan Diego
$659
Lufthansa
Apr 7
SAN11:00 amSan Diego
27h 45m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 22
LIS6:15 amLisbon Humberto Delgado
24h 44m
2 stops
SAN10:59 pmSan Diego
$661

United Airlines flights from San Diego to Portugal

Our best United Airlines deals on San Diego to Portugal flight tickets
United Airlines
Apr 25
SAN5:15 pmSan Diego
21h 30m
1 stop
LIS10:45 pmLisbon Humberto Delgado
May 8
LIS5:05 amLisbon Humberto Delgado
22h 50m
2 stops
SAN7:55 pmSan Diego
$717
United Airlines
Apr 19
SAN5:15 pmSan Diego
21h 30m
1 stop
LIS10:45 pmLisbon Humberto Delgado
May 5
LIS12:20 pmLisbon Humberto Delgado
30h 56m
1 stop
SAN11:16 amSan Diego
$723
United Airlines
Apr 19
SAN5:15 pmSan Diego
21h 30m
1 stop
LIS10:45 pmLisbon Humberto Delgado
May 5
LIS12:20 pmLisbon Humberto Delgado
30h 56m
1 stop
SAN11:16 amSan Diego
$724

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 March 30, 2026.
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

Cheapest round-trip

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/21

7:40 pm-11:00 pm

1 stop19h 20m

Lisbon Humberto Delgado

Tue 5/5

8:25 am-8:43 pm

2 stops20h 18m

$662

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/21

7:40 pm-11:00 pm

1 stop19h 20m

Lisbon Humberto Delgado

Tue 5/5

6:45 pm-2:55 pm

1 stop28h 10m

$666

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/21

6:15 am-9:05 am

1 stop18h 50m

Lisbon Humberto Delgado

Tue 5/5

8:25 am-8:43 pm

2 stops20h 18m

$670

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/14

11:00 am-10:45 pm

2 stops27h 45m

Lisbon Humberto Delgado

Wed 4/22

6:15 am-3:25 pm

1 stop17h 10m

$706

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 4/21

5:15 pm-11:25 pm

1 stop22h 10m

Porto

Tue 4/28

6:20 am-3:25 pm

1 stop17h 05m

$777
Quickest round-trip

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 8/18

7:00 am-10:30 am

1 stop19h 30m

Porto

Tue 1/12

5:00 am-12:05 pm

1 stop15h 05m

$790

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 9/23

1:05 pm-3:25 pm

2 stops18h 20m

Porto

Fri 10/2

5:00 am-6:00 pm

2 stops21h 00m

$791

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 4/21

9:47 am-3:25 pm

2 stops21h 38m

Porto

Tue 4/28

5:00 am-3:55 pm

2 stops18h 55m

$817

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Mon 6/1

1:37 pm-7:25 pm

2 stops21h 48m

Faro

Tue 6/9

8:15 pm-6:21 pm

2 stops30h 06m

$1,050

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Mon 6/1

6:40 am-9:50 am

2 stops19h 10m

Faro

Tue 6/9

11:40 am-7:52 pm

1 stop16h 12m

$1,089

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 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 January. Flight prices, which tend to average around $604, 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 San Diego during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $604.

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 $773 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 $688 on momondo.

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

You could potentially save up to 34% 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

15h 20m

Direct flights

None
The fastest flight from San Diego to Portugal takes 15h 20m
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
DeltaPriceFrom $489Free CancellationRating
7.9
8,358 reviews
Search Delta flights
KLMPriceFrom $491Free CancellationRating
7.8
1,479 reviews
Search KLM flights
IberiaPriceFrom $506Free CancellationRating
7.0
3,160 reviews
Search Iberia flights
LufthansaPriceFrom $520Free CancellationRating
6.8
7,874 reviews
Search Lufthansa flights
British AirwaysPriceFrom $523Free CancellationRating
6.7
7,834 reviews
Search British Airways flights
United AirlinesPriceFrom $536Free CancellationRating
7.4
9,514 reviews
Search United Airlines flights
American AirlinesPriceFrom $555Free CancellationRating
7.1
11,524 reviews
Search American Airlines flights
Air CanadaPriceFrom $590Free CancellationRating
7.1
10,863 reviews
Search Air Canada 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.

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