Portugal

$373+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Apr 22 — Apr 291
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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 March 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:21 pm
SAN
-
LIS
2 stops22h 24m
Lufthansa
Tue 4/286:15 am
LIS
-
SAN
1 stop17h 10m
Lufthansa
Deal found 3/19$603
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:15 pm
SAN
-
LIS
1 stop21h 30m
Lufthansa
Wed 4/155:05 am
LIS
-
SAN
2 stops24h 17m
Lufthansa
Deal found 3/22$605
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:15 pm
SAN
-
LIS
1 stop21h 30m
Lufthansa
Wed 4/296:15 am
LIS
-
SAN
1 stop17h 10m
Lufthansa
Deal found 3/19$620
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:15 pm
SAN
-
LIS
1 stop21h 30m
Lufthansa
Wed 4/226:15 am
LIS
-
SAN
1 stop17h 10m
Lufthansa
Deal found 3/21$624
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:15 pm
SAN
-
LIS
1 stop21h 30m
Multiple Airlines
Wed 4/295:55 am
LIS
-
SAN
2 stops24h 43m
Multiple Airlines
Deal found 3/19$628
This Gotogate deal was found by Cheapflights users on 3/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:15 pm
SAN
-
LIS
1 stop21h 30m
Lufthansa
Tue 4/286:15 am
LIS
-
SAN
1 stop17h 10m
Lufthansa
Deal found 3/23$648
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:30 pm
SAN
-
LIS
2 stops29h 40m
United Airlines
Thu 11/125:00 am
LIS
-
SAN
2 stops37h 11m
United Airlines
Deal found 3/21$650
This Justfly.com deal was found by Cheapflights users on 3/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:35 pm
SAN
-
OPO
2 stops34h 25m
Multiple Airlines
Tue 2/161:45 pm
OPO
-
SAN
1 stop34h 00m
Multiple Airlines
Deal found 3/20$719
This United Airlines deal was found by Cheapflights users on 3/19. 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 8/186:35 am
SAN
-
OPO
1 stop16h 20m
United Airlines
Tue 2/166:00 am
OPO
-
SAN
2 stops22h 33m
United Airlines
Deal found 3/19$743
This FlightHub deal was found by Cheapflights users on 3/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:35 pm
SAN
-
OPO
2 stops34h 25m
Multiple Airlines
Tue 1/121:45 pm
OPO
-
SAN
1 stop34h 00m
Multiple Airlines
Deal found 3/19$744
This Justfly.com deal was found by Cheapflights users on 3/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:15 pm
SAN
-
OPO
1 stop22h 10m
Lufthansa
Tue 4/286:20 am
OPO
-
SAN
1 stop17h 05m
Lufthansa
Deal found 3/23$754
This Delta deal was found by Cheapflights users on 3/22. 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.
Tue 4/219:47 am
SAN
-
OPO
2 stops21h 38m
Delta
Tue 4/285:00 am
OPO
-
SAN
1 stop14h 50m
Delta
Deal found 3/22$757

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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$603
(Kiwi.com)

One-way from

$373
(Thrive Travel)

Popular in

June

Cheapest in

January

Average price

$864
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 ($165 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Average for round-trip flights in March 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 March 23, 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 4/7

7:14 pm-10:30 am

2 stops31h 16m

Lisbon Humberto Delgado

Tue 4/14

5:05 am-10:59 pm

2 stops25h 54m

$669

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sat 5/2

7:30 am-11:15 am

2 stops19h 45m

Lisbon Humberto Delgado

Sat 5/9

11:55 am-11:27 pm

2 stops19h 32m

$670

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/14

2:10 pm-6:45 pm

2 stops20h 35m

Lisbon Humberto Delgado

Wed 4/22

5:35 am-4:15 pm

1 stop18h 40m

$672

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/7

1:40 pm-10:55 am

1 stop37h 15m

Lisbon Humberto Delgado

Tue 4/14

5:00 am-11:50 am

1 stop14h 50m

$710

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/21

7:20 am-10:45 pm

2 stops31h 25m

Lisbon Humberto Delgado

Mon 6/8

11:25 am-5:20 pm

2 stops37h 55m

$773

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/16

2:45 pm-6:45 pm

2 stops20h 00m

Lisbon Humberto Delgado

Fri 4/24

5:00 am-6:19 pm

2 stops21h 19m

$774

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

10:40 am-5:50 pm

2 stops23h 10m

Lisbon Humberto Delgado

Mon 4/20

10:00 am-8:47 pm

1 stop18h 47m

$781

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sun 5/3

6:25 am-10:55 am

2 stops20h 30m

Lisbon Humberto Delgado

Sat 5/23

5:00 am-2:57 pm

2 stops17h 57m

$815

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 5/5

2:45 pm-3:30 pm

2 stops16h 45m

Porto

Tue 5/19

6:15 am-6:03 pm

2 stops19h 48m

$816

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 5/5

3:15 pm-10:05 pm

2 stops22h 50m

Porto

Tue 5/19

5:00 am-11:50 am

1 stop14h 50m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 55 resultsSorted by cheapest first
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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

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

Currently, February is the cheapest month in which you can book a flight from San Diego to Portugal (average of $451). Flying from San Diego to Portugal in June is currently the most expensive (average of $710). 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 March 23, 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

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

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

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

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

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

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

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

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

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

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

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

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 United Airlines, Delta, and KLM fly from San Diego to Portugal in about 19h 45m. The time it takes to get you to your destination can typically vary by up to 17h 30m. San Diego and Portugal are separated by a distance of 5677 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, February is the cheapest month in which you can book a flight from San Diego to Portugal (average of $451). Flying from San Diego to Portugal in June is currently the most expensive (average of $710). 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

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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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$490Average$770FlexibilityNo cancel feeOn-time75%
DeltaCheapest$495Average$738FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$506Average$997FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$520Average$792FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$523Average$1,055FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$536Average$1,008FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$555Average$1,199FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$590Average$863FlexibilityNo cancel feeOn-time67%

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