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$471+ Cheap flights from San Diego (SAN) to Porto (OPO)

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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — OPO
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from San Diego to Porto

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$645
(KLM)

One-way from

$471
(Mytrip)

Popular in

May

Cheapest in

February

Average price

$763
Provider with most accurate pricing for San Diego-Porto flight deals.
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Provider most trusted by Cheapflights users for San Diego-Porto flights.
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From San Diego to Porto
Search Deals
One-way flight from San Diego to Porto
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($197 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from San Diego to Porto

Cheapest flights from San Diego to Porto
Explore the most affordable flight options available from San Diego to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This KLM deal was found by Cheapflights users on 2/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/127:15 amSAN - OPO
2 stops20h 15mKLM
Tue 3/186:00 amOPO - SAN
2 stops21h 16mKLM
Deal found 2/20$645
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/127:15 amSAN - OPO
2 stops20h 35mDelta
Tue 3/186:00 amOPO - SAN
2 stops21h 16mDelta
Deal found 2/20$646
This Lufthansa deal was found by Cheapflights users on 2/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1210:00 amSAN - OPO
2 stops22h 15mLufthansa
Tue 3/181:45 pmOPO - SAN
1 stop33h 40mLufthansa
Deal found 2/20$657
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/128:10 amSAN - OPO
3 stops24h 05mUnited Airlines
Tue 3/186:00 amOPO - SAN
2 stops21h 23mUnited Airlines
Deal found 2/20$659
This Justfly.com deal was found by Cheapflights users on 2/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/122:17 pmSAN - OPO
2 stops36h 58mMultiple Airlines
Sun 4/208:40 amOPO - SAN
2 stops45h 49mMultiple Airlines
Deal found 2/19$911
This SWISS deal was found by Cheapflights users on 2/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1110:59 amSAN - OPO
2 stops36h 56mSWISS
Sat 4/197:20 pmOPO - SAN
2 stops31h 36mSWISS
Deal found 2/19$1,131
This Ovago deal was found by Cheapflights users on 2/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/127:50 pmSAN - OPO
1 stop31h 00mBritish Airways
Sun 4/209:20 pmOPO - SAN
1 stop25h 30mBritish Airways
Deal found 2/19$1,239
This FlightHub deal was found by Cheapflights users on 2/20. 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.
Wed 3/127:10 amSAN - OPO
1 stop21h 50mTAP AIR PORTUGAL
Tue 3/186:40 pmOPO - SAN
1 stop22h 26mTAP AIR PORTUGAL
Deal found 2/20$1,369
This Booking.com deal was found by Cheapflights users on 2/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/196:15 amSAN - OPO
2 stops28h 15mAir Canada
Sat 7/53:05 amOPO - SAN
2 stops24h 33mAir Canada
Deal found 2/19$1,796

Find flights from San Diego to Porto within your budget

Customize your flight search to find flights from San Diego to Porto 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 February 20, 2025.

Fly from

San Diego

Fly to

Porto

Route

Depart

Return

Price

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 3/12

7:15 am-10:30 am

2 stops20h 15m

Porto

Tue 3/18

6:00 am-8:16 pm

2 stops21h 16m

$645

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 3/12

7:15 am-10:50 am

2 stops20h 35m

Porto

Tue 3/18

6:00 am-8:16 pm

2 stops21h 16m

$646

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 3/12

10:00 am-3:15 pm

2 stops22h 15m

Porto

Tue 3/18

1:45 pm-4:25 pm

1 stop33h 40m

$657

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 3/12

8:10 am-3:15 pm

3 stops24h 05m

Porto

Tue 3/18

6:00 am-8:23 pm

2 stops21h 23m

$659

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 4/12

2:17 pm-11:15 am

2 stops36h 58m

Porto

Sun 4/20

8:40 am-10:29 pm

2 stops45h 49m

$911

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Fri 4/11

10:59 am-7:55 am

2 stops36h 56m

Porto

Sat 4/19

7:20 pm-6:56 pm

2 stops31h 36m

$1,131

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 4/12

7:50 pm-10:50 am

1 stop31h 00m

Porto

Sun 4/20

9:20 pm-2:50 pm

1 stop25h 30m

$1,239

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 3/12

7:10 am-12:00 pm

1 stop21h 50m

Porto

Tue 3/18

6:40 pm-10:06 am

1 stop22h 26m

$1,369

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 6/19

6:15 am-6:30 pm

2 stops28h 15m

Porto

Sat 7/5

3:05 am-7:38 pm

2 stops24h 33m

$1,796

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Fri 6/13

10:30 pm-11:40 am

3 stops29h 10m

$471

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 16 results
1
2

Compare providers for flights from San Diego to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Porto in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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.

Travel insights for flights from San Diego to Porto

Get recent, data-driven insights about flights from San Diego to Porto including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from San Diego to Porto (average of $523). Flying from San Diego to Porto in June is currently the most expensive (average of $1,092). 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.

What is the cheapest time of day to fly from SAN to OPO?

Find hourly flight availability from San Diego to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

It’s optimal to fly from San Diego to Porto in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the morning.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated February 20, 2025.
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.

Air Transat
7.8
Good
380 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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 Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from San Diego to Porto round-trip?

    Flying on KLM is currently your cheapest option to Porto, with prices starting at $645. Additional round-trip tickets that might be worth considering are offered by Delta and Lufthansa, with the lowest prices starting at $646 and $657, respectively. You may be able to fly from San Diego to Porto for 39% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Air Transat, with whom users have recently found tickets for as low as $481. However, be on the lookout for offers from Scandinavian Airlines and Air Canada, as they are both options that can get you from San Diego to Porto for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Porto 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 Porto?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Porto (average of $523). Flying from San Diego to Porto in June is currently the most expensive (average of $1,092). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for San Diego to Porto

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Top 4 airlines flying from San Diego to Porto

Discover the top 4 airlines that operate flights from San Diego to Porto. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$547Average$1,040FlexibilityNo cancel feeOn-time76%
DeltaCheapest$712Average$897FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$732Average$940FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$794Average$1,229FlexibilityNo cancel feeOn-time69%
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