$295+ Cheap flights from San Diego (SAN) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — OPO
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Find cheap flights from San Diego to Porto 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 Porto
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Best
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One-way
Cheapest flights from San Diego to PortoExplore 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 October 25, 2026.
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 October 25, 2026.
This Expedia deal was found by Cheapflights users on 10/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:01 pm -
2 stops35h 14m
Mon 12/147:20 pm -
2 stops33h 17m
Deal found 10/23![SWISS logo]()
$785
This Expedia deal was found by Cheapflights users on 10/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:01 pm -
2 stops35h 14m
Mon 12/141:45 pm -
1 stop34h 00m
Deal found 10/23![Multiple Airlines logo]()
$787
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:50 am -
2 stops18h 40m
Mon 12/1412:30 pm -
2 stops39h 53m
Deal found 10/23![United Airlines logo]()
$820
This Delta deal was found by Cheapflights users on 10/20. 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.
Tue 10/273:20 pm -
1 stop17h 05m
Tue 11/35:00 am -
1 stop15h 10m
Deal found 10/20![Delta logo]()
$824
This United deal was found by Cheapflights users on 10/23. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:45 am -
2 stops18h 45m
Mon 12/211:45 pm -
1 stop34h 00m
Deal found 10/23![Multiple Airlines logo]()
$829
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Thu 12/37:00 am -
1 stop18h 30m
Wed 12/96:00 am -
2 stops38h 00m
Deal found 10/20![United Airlines logo]()
$832
This Travelocity deal was found by Cheapflights users on 10/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:01 pm -
2 stops18h 29m
Wed 12/97:20 pm -
2 stops48h 40m
Deal found 10/20![Multiple Airlines logo]()
$833
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:45 am -
2 stops18h 45m
Sun 12/1312:30 pm -
2 stops31h 30m
Deal found 10/22![United Airlines logo]()
$836
Best flights from San Diego to PortoDiscover carefully curated flight deals from San Diego to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from San Diego to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This United deal was found by Cheapflights users on 10/23. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:45 am -
2 stops18h 45m
Mon 12/211:45 pm -
1 stop34h 00m
Deal found 10/23![Multiple Airlines logo]()
$829
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:50 am -
2 stops18h 40m
Mon 12/1412:35 pm -
1 stop16h 37m
Deal found 10/23![United Airlines logo]()
$853
This Delta deal was found by Cheapflights users on 10/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:15 am -
2 stops20h 20m
Mon 12/216:25 am -
2 stops22h 29m
Deal found 10/23![Delta logo]()
$889
This KLM deal was found by Cheapflights users on 10/22. 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.
Thu 12/242:05 pm -
1 stop17h 20m
Thu 1/75:55 am -
2 stops22h 53m
Deal found 10/22![Multiple Airlines logo]()
$889
This Delta deal was found by Cheapflights users on 10/25. 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.
Thu 12/244:15 pm -
2 stops21h 45m
Thu 1/711:30 am -
2 stops19h 10m
Deal found 10/25![Delta logo]()
$930
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 11/216:50 am -
2 stops18h 40m
Sat 11/2812:30 pm -
2 stops31h 30m
Deal found 10/24![United Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:00 am -
2 stops17h 30m
Fri 12/1112:35 pm -
1 stop16h 37m
Deal found 10/22![United Airlines logo]()
$1,203
Last-minute flights from San Diego to PortoDiscover last-minute flight deals from San Diego to Porto. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Porto. Data last updated October 25, 2026 and is based on user searches.
This Air France deal was found by Cheapflights users on 10/23. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:00 am -
2 stops19h 35m
Sun 11/15:55 am -
2 stops22h 17m
Deal found 10/23![Air France logo]()
$878
This Delta deal was found by Cheapflights users on 10/20. 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.
Tue 10/273:20 pm -
1 stop17h 05m
Tue 11/35:00 am -
1 stop15h 10m
Deal found 10/20![Delta logo]()
$824
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:35 am -
1 stop18h 55m
Mon 12/146:00 am -
2 stops41h 12m
Deal found 10/23![United Airlines logo]()
$866
This KLM deal was found by Cheapflights users on 10/20. 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.
Sun 11/17:20 am -
1 stop16h 55m
Mon 12/145:00 am -
2 stops21h 05m
Deal found 10/20![KLM logo]()
$881
This Air France deal was found by Cheapflights users on 10/20. 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.
Sun 11/16:25 am -
2 stops17h 50m
Mon 12/145:00 am -
2 stops19h 16m
Deal found 10/20![Multiple Airlines logo]()
$885
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Mon 11/26:35 am -
1 stop18h 55m
Sun 12/136:00 am -
2 stops24h 33m
Deal found 10/21![United Airlines logo]()
$884
One-way flights from San Diego to PortoSearch for one-way flight options from San Diego to Porto. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from San Diego to Porto. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:50 am -
3 stops46h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Tue 11/178:03 am -
1 stop18h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/127:51 pm -
3 stops52h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/137:12 am -
3 stops40h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/187:40 am -
3 stops26h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/21:14 pm -
3 stops34h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$550
Find 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 October 25, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $709 (Gotogate) |
One-way from | $295 (Kiwi.com) |
Popular in | May |
Cheapest in | February |
Average price | $1,001 |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated October 25, 2026.
Use the filters below to find and compare flights from San Diego to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Mon 11/23
8:50 am-3:00 pm
3 stops46h 10m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$295
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Tue 11/17
8:03 am-10:30 am
1 stop18h 27m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$376
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Sun 12/13
7:12 am-8:10 am
3 stops40h 58m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$467
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Sat 1/2
7:56 pm-8:40 am
3 stops52h 44m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$559
Quickest round-trip
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Wed 11/18
7:32 am-8:15 am
1 stop16h 43m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$584
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Sat 12/12
5:35 pm-11:55 pm
1 stop22h 20m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$590
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Sat 1/2
2:05 pm-8:55 pm
1 stop22h 50m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$636
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Mon 12/14
6:45 am-9:30 am
2 stops18h 45m
Porto
Mon 12/21
1:45 pm-3:45 pm
1 stop34h 00m
$829
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Mon 12/7
6:50 am-9:30 am
2 stops18h 40m
Porto
Mon 12/14
12:35 pm-9:12 pm
1 stop16h 37m
$853
San DiegoPorto
SAN San Diego - OPO Porto
SANOPO
San Diego
Mon 12/14
6:15 am-10:35 am
2 stops20h 20m
Porto
Mon 12/21
6:25 am-8:54 pm
2 stops22h 29m
$889
Showing 1-10 of 14 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Porto flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on San Diego-Porto flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.
SAN-OPO
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 Porto
What is the cheapest month to book a flight from San Diego to Porto?
Currently, February is the cheapest month in which you can book a flight from San Diego to Porto (average of $585). Flying from San Diego to Porto in May is currently the most expensive (average of $1,342). 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.
How much does it cost to fly round-trip from San Diego to Porto?
Airfare is below average for this route at the moment.
San Diego to Porto flights typically cost between $898 and $952 in March.The cheapest round-trip price found within the last 5 days was $709 on Multiple Airlines (Mar 3-Mar 18).
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 October 25, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andUnited Airlines from San Diego to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.7
Food
7.4
Overall
7.8
Boarding
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Food
7.4
Overall
7.8
Boarding
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Food
7.4
Overall
7.8
Boarding
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Food
7.4
Overall
7.8
Boarding
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Comfort
7.7
Food
7.4
Overall
7.8
Boarding
7.8
Crew
8.4
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
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.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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San Diego and Porto flights
Browse other San Diego and Porto flight options. Last updated on October 25, 2026.
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Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 25, 2026.
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 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$1,040 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$596 | Average$927 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$788 | Average$1,342 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$797 | Average$1,140 | FlexibilityNo cancel fee | On-time69% |