Portugal

$381+ Cheap flights from San Diego (SAN) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
May 24 — May 311
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Diego to Portugal

Cheapest flights from San Diego to Portugal
Explore the most affordable flight options available from San Diego to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.

This KLM deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:00 am
SAN
-
LIS
1 stop17h 00m
KLM
Wed 11/1811:25 am
LIS
-
SAN
1 stop32h 40m
KLM
Deal found 4/22$703
This FlightHub deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 am
SAN
-
LIS
2 stops38h 00m
Multiple Airlines
Thu 11/126:10 am
LIS
-
SAN
1 stop17h 35m
Multiple Airlines
Deal found 4/20$706
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:50 am
SAN
-
LIS
2 stops15h 20m
United Airlines
Wed 11/186:10 am
LIS
-
SAN
1 stop17h 35m
United Airlines
Deal found 4/19$707
This Air France deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:15 am
SAN
-
LIS
2 stops17h 45m
Multiple Airlines
Wed 11/1811:25 am
LIS
-
SAN
2 stops20h 30m
Multiple Airlines
Deal found 4/22$709
This Air France deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
SAN
-
LIS
2 stops18h 00m
Multiple Airlines
Wed 11/183:30 pm
LIS
-
SAN
1 stop28h 35m
Multiple Airlines
Deal found 4/21$712
This oojo deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 pm
SAN
-
LIS
1 stop31h 50m
British Airways
Tue 12/811:05 am
LIS
-
SAN
1 stop18h 39m
British Airways
Deal found 4/23$716
This Ticket deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/43:15 pm
SAN
-
LIS
2 stops18h 35m
Multiple Airlines
Tue 5/195:00 am
LIS
-
SAN
1 stop14h 50m
Multiple Airlines
Deal found 4/20$717
This Expedia deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:40 pm
SAN
-
LIS
1 stop19h 30m
Multiple Airlines
Sun 11/17:45 am
LIS
-
SAN
2 stops21h 54m
Multiple Airlines
Deal found 4/20$720
This Delta deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:15 am
SAN
-
LIS
2 stops21h 05m
Delta
Wed 11/185:00 am
LIS
-
SAN
2 stops23h 18m
Delta
Deal found 4/22$721
This Air France deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:05 pm
SAN
-
LIS
2 stops18h 05m
Multiple Airlines
Wed 11/1811:25 am
LIS
-
SAN
2 stops20h 30m
Multiple Airlines
Deal found 4/20$722
This American Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 pm
SAN
-
LIS
1 stop15h 45m
American Airlines
Thu 11/1211:05 am
LIS
-
SAN
2 stops19h 17m
American Airlines
Deal found 4/21$724
This FlightHub deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am
SAN
-
OPO
1 stop16h 00m
Multiple Airlines
Tue 10/136:20 am
OPO
-
SAN
1 stop17h 05m
Multiple Airlines
Deal found 4/22$777

Find flight deals from San Diego to Portugal

Keep the following information in mind while searching for San Diego to Portugal flight deals. Data was last updated April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$717
(Ticket)

One-way from

$381
(Cheapflightsfares)

Popular in

June

Cheapest in

January

Average price

$707
Provider with most accurate pricing for San Diego-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for San Diego-Lisbon Humberto Delgado flights.
From San Diego to Portugal
One-way flight from San Diego to Portugal
Highest demand for flights based on searches. 17% potential increase in price ($163 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 24, 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 7/7

11:39 am-2:55 pm

2 stops19h 16m

Lisbon Humberto Delgado

Tue 7/21

5:35 am-8:25 pm

2 stops22h 50m

$867

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 7/20

6:20 am-11:15 am

2 stops20h 55m

Lisbon Humberto Delgado

Wed 7/29

12:45 pm-8:25 pm

1 stop15h 40m

$870

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/15

2:24 pm-7:00 am

2 stops32h 36m

Porto

Wed 9/30

12:45 pm-3:30 pm

2 stops34h 45m

$871

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 5/4

10:40 pm-10:30 am

2 stops27h 50m

Lisbon Humberto Delgado

Wed 8/26

12:20 pm-6:35 pm

3 stops38h 15m

$874

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/15

1:40 pm-3:30 pm

1 stop17h 50m

Porto

Wed 9/30

11:45 am-11:50 am

1 stop32h 05m

$875

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 9/9

7:00 am-10:30 am

1 stop19h 30m

Porto

Fri 9/18

5:00 am-8:48 pm

2 stops23h 48m

$881

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 10/8

1:05 pm-10:30 am

1 stop13h 25m

Porto

Sun 10/18

5:55 am-5:59 pm

2 stops20h 04m

$915

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 10/8

7:00 am-10:30 am

2 stops19h 30m

Porto

Sun 10/18

12:25 pm-11:03 pm

2 stops18h 38m

$919

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 5/26

10:59 am-5:50 pm

2 stops22h 51m

Lisbon Humberto Delgado

Tue 6/9

5:00 am-6:13 pm

2 stops21h 13m

$936

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 6/1

1:37 pm-5:50 pm

2 stops20h 13m

Lisbon Humberto Delgado

Fri 6/12

5:00 am-8:34 pm

2 stops23h 34m

$936

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 59 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from San Diego to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from San Diego with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Portugal

How far ahead should I book a flight from San Diego to Portugal?

The best time to book flights from San Diego to Portugal is 16 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Diego to Portugal?

Currently, December is the cheapest month in which you can book a flight from San Diego to Portugal (average of $443). Flying from San Diego to Portugal in June is currently the most expensive (average of $691). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated April 24, 2026.
Get a feel of what it's like to fly with Delta,KLM, andUnited Airlines from San Diego to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Overall

7.9

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from San Diego to Portugal?

    If you book a flight to Portugal from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego.

  • How long is the flight from San Diego to Portugal?

    Airlines like Delta, United Airlines, and KLM fly from San Diego to Portugal in about 17h 50m. The time it takes to get you to your destination can typically vary by up to 14h 46m. San Diego and Portugal are separated by a distance of 5596 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from San Diego to Portugal one-way?

    To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $245. United Airlines flights start at $258 while deals on Air Canada start at $359 one-way.

  • What are the most popular routes from San Diego to Portugal?

  • Can I find deals for flights from San Diego to Portugal that include hotel bookings?

    Yes. In addition to deals on San Diego to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Portugal.

  • Can I find deals for business class flights from San Diego to Portugal?

    Yes. Cheapflights offers flight deals from San Diego to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Portugal?

    Currently, December is the cheapest month in which you can book a flight from San Diego to Portugal (average of $443). Flying from San Diego to Portugal in June is currently the most expensive (average of $691). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Portugal

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from San Diego to Portugal

Discover the top 8 airlines that operate flights from San Diego to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$489Average$912FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$491Average$880FlexibilityNo cancel feeOn-time75%
IberiaCheapest$506Average$997FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$520Average$747FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$523Average$1,042FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$536Average$999FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$555Average$1,140FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$589Average$819FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.