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Cheap flights from San Diego to Portugal from $304

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 5/6. 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.
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
$437Lufthansa
Tue, Apr 7 - Wed, Apr 22
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
Tue, Mar 10 - Wed, Mar 18
United Airlines Logo
1:05 pm - 10:15 am
SAN
-
LIS
13h 10m
1 stop
United Airlines Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$486United Airlines
Mon, Feb 23 - Tue, Mar 10
KLM Logo
3:00 pm - 3:25 pm
SAN
-
OPO
17h 25m
1 stop
KLM Logo
5:00 am - 1:05 pm
OPO
-
SAN
15h 05m
1 stop
$486KLM
Tue, Mar 10 - Tue, Mar 17
KLM Logo
7:00 am - 9:00 am
SAN
-
LIS
18h 00m
1 stop
KLM Logo
11:25 am - 1:05 pm
LIS
-
SAN
32h 40m
1 stop
$489KLM
Mon, Mar 2 - Mon, Mar 9
Delta Logo
10:20 pm - 8:00 am
SAN
-
LIS
25h 40m
2 stops
Delta Logo
5:00 am - 8:48 pm
LIS
-
SAN
22h 48m
2 stops
$492Delta
Mon, Feb 23 - Tue, Mar 10
British Airways Logo
4:41 pm - 7:50 pm
SAN
-
OPO
19h 09m
2 stops
British Airways Logo
9:10 pm - 5:50 pm
OPO
-
SAN
28h 40m
1 stop
$543British Airways
Mon, Apr 13 - Mon, Apr 20
British Airways Logo
4:41 pm - 7:50 pm
SAN
-
OPO
19h 09m
2 stops
British Airways Logo
9:10 pm - 3:51 pm
OPO
-
SAN
26h 41m
2 stops
$577British Airways
Mon, Apr 13 - Mon, Apr 20
Delta Logo
1:45 pm - 6:20 pm
SAN
-
OPO
20h 35m
2 stops
Delta Logo
5:00 am - 11:50 am
OPO
-
SAN
14h 50m
1 stop
$663Delta
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
10:40 pm - 9:50 am
SAN
-
FAO
27h 10m
2 stops
United Airlines Logo
11:40 am - 10:08 am
FAO
-
SAN
30h 28m
2 stops
$950United Airlines
Sat, Jul 18 - Tue, Jul 28

British Airways flights from San Diego to Portugal

Our best British Airways deals on San Diego to Portugal flight tickets
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
$498
British Airways
Apr 7
SAN6:15 amSan Diego
24h 15m
2 stops
LIS2:30 pmLisbon Humberto Delgado
Apr 23
LIS4:30 pmLisbon Humberto Delgado
30h 25m
1 stop
SAN2:55 pmSan Diego
$506
British Airways
Apr 7
SAN9:28 amSan Diego
29h 32m
2 stops
LIS11:00 pmLisbon Humberto Delgado
Apr 22
LIS6:45 pmLisbon Humberto Delgado
28h 10m
1 stop
SAN2:55 pmSan Diego
$507

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
17h 25m
1 stop
OPO3:25 pmPorto
Mar 17
OPO5:00 amPorto
15h 05m
1 stop
SAN1:05 pmSan Diego
$486
KLM
Mar 2
SAN7:00 amSan Diego
18h 00m
1 stop
LIS9:00 amLisbon Humberto Delgado
Mar 9
LIS11:25 amLisbon Humberto Delgado
32h 40m
1 stop
SAN1:05 pmSan Diego
$489
KLM
Apr 18
SAN1:40 pmSan Diego
16h 55m
1 stop
LIS2:35 pmLisbon Humberto Delgado
May 1
LIS7:45 pmLisbon Humberto Delgado
24h 05m
1 stop
SAN11:50 amSan Diego
$493

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 February 14, 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

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/7

11:00 am-10:45 pm

2 stops27h 45m

Lisbon Humberto Delgado

Wed 4/22

6:15 am-3:25 pm

1 stop17h 10m

$437

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 3/10

6:35 pm-11:30 pm

1 stop21h 55m

Lisbon Humberto Delgado

Wed 3/18

6:10 am-4:45 pm

1 stop17h 35m

$448

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 2/23

1:05 pm-10:15 am

1 stop13h 10m

Lisbon Humberto Delgado

Tue 3/10

6:10 am-4:45 pm

1 stop17h 35m

$486

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

3:00 pm-3:25 pm

1 stop17h 25m

Porto

Tue 3/17

5:00 am-1:05 pm

1 stop15h 05m

$486

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 3/2

7:00 am-9:00 am

1 stop18h 00m

Lisbon Humberto Delgado

Mon 3/9

11:25 am-1:05 pm

1 stop32h 40m

$489

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 2/23

10:20 pm-8:00 am

2 stops25h 40m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-8:48 pm

2 stops22h 48m

$492

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 4/13

4:41 pm-7:50 pm

2 stops19h 09m

Porto

Mon 4/20

9:10 pm-5:50 pm

1 stop28h 40m

$543

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 4/13

4:41 pm-7:50 pm

2 stops19h 09m

Porto

Mon 4/20

9:10 pm-3:51 pm

2 stops26h 41m

$577

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/31

1:45 pm-6:20 pm

2 stops20h 35m

Porto

Tue 4/7

5:00 am-11:50 am

1 stop14h 50m

$663

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Sat 7/18

10:40 pm-9:50 am

2 stops27h 10m

Faro

Tue 7/28

11:40 am-10:08 am

2 stops30h 28m

$950

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 $625.

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 $797 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 $667 on momondo.

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

You could potentially save up to 3% 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

16h 20m

Direct flights

None
The fastest flight from San Diego to Portugal takes 16h 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
8,200 reviews
Search Delta flights
KLMPriceFrom $490Free CancellationRating
7.7
1,454 reviews
Search KLM flights
IberiaPriceFrom $506Free CancellationRating
7.0
3,115 reviews
Search Iberia flights
British AirwaysPriceFrom $528Free CancellationRating
6.7
7,739 reviews
Search British Airways flights
LufthansaPriceFrom $534Free CancellationRating
6.8
7,785 reviews
Search Lufthansa flights
American AirlinesPriceFrom $555Free CancellationRating
7.2
11,293 reviews
Search American Airlines flights
United AirlinesPriceFrom $577Free CancellationRating
7.4
9,295 reviews
Search United Airlines flights
Air CanadaPriceFrom $590Free CancellationRating
7.1
10,717 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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