$333+ Cheap flights from San Francisco (SFO) 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — OPO
Nov 1 — Nov 81
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco 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 Francisco to Porto
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Best
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Cheapest flights from San Francisco to PortoExplore the most affordable flight options available from San Francisco to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2026.
Explore the most affordable flight options available from San Francisco to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2026.
This Gotogate deal was found by Cheapflights users on 9/29. 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.
Sat 10/247:35 pm -
1 stop32h 10m
Fri 11/64:00 pm -
1 stop30h 45m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$656
This Gotogate deal was found by Cheapflights users on 9/29. 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.
Mon 11/307:25 pm -
1 stop31h 50m
Wed 12/912:05 pm -
1 stop36h 25m
Deal found 9/29![SWISS logo]()
$701
This Gotogate deal was found by Cheapflights users on 9/27. 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 11/87:25 pm -
1 stop31h 50m
Thu 11/1912:05 pm -
1 stop36h 25m
Deal found 9/27![SWISS logo]()
$711
This Expedia deal was found by Cheapflights users on 9/29. 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.
Wed 12/28:25 am -
2 stops19h 25m
Fri 12/116:15 am -
1 stop21h 20m
Deal found 9/29![Multiple Airlines logo]()
$722
This Expedia deal was found by Cheapflights users on 9/29. 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.
Sun 11/298:25 am -
2 stops20h 25m
Tue 12/87:20 pm -
1 stop29h 10m
Deal found 9/29![Multiple Airlines logo]()
$723
This Booking.com deal was found by Cheapflights users on 9/28. 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.
Mon 11/27:25 pm -
1 stop31h 50m
Wed 11/1812:05 pm -
1 stop36h 25m
Deal found 9/28![SWISS logo]()
$731
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/1012:05 pm -
1 stop13h 25m
Tue 11/1712:35 pm -
1 stop15h 35m
Deal found 9/30![United Airlines logo]()
$735
Best flights from San Francisco to PortoDiscover carefully curated flight deals from San Francisco to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 2, 2026.
Discover carefully curated flight deals from San Francisco to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 2, 2026.
This United Airlines deal was found by Cheapflights users on 9/27. 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 11/117:00 am -
1 stop18h 30m
Wed 11/186:00 am -
2 stops26h 53m
Deal found 9/27![United Airlines logo]()
$746
This Delta deal was found by Cheapflights users on 9/28. 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 11/911:05 pm -
2 stops27h 30m
Tue 11/175:00 am -
2 stops19h 14m
Deal found 9/28![Delta logo]()
$751
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/30. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:35 pm -
1 stop14h 25m
Fri 12/117:00 am -
1 stop17h 05m
Deal found 9/30![TAP AIR PORTUGAL logo]()
$929
This United deal was found by Cheapflights users on 9/29. 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.
Sat 10/2410:40 pm -
2 stops27h 50m
Fri 11/66:00 am -
2 stops39h 10m
Deal found 9/29![Multiple Airlines logo]()
$959
This Delta deal was found by Cheapflights users on 10/1. 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 11/42:40 pm -
2 stops23h 20m
Sat 11/145:00 am -
2 stops18h 35m
Deal found 10/1![Delta logo]()
$801
This United Airlines deal was found by Cheapflights users on 9/29. 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 11/148:15 am -
1 stop17h 15m
Sat 11/216:00 am -
1 stop22h 10m
Deal found 9/29![United Airlines logo]()
$835
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Fri 11/611:30 pm -
2 stops26h 00m
Sat 11/146:00 am -
1 stop22h 10m
Deal found 10/1![United Airlines logo]()
$840
This Delta deal was found by Cheapflights users on 10/1. 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.
Fri 11/66:05 am -
2 stops20h 30m
Sat 11/145:00 am -
2 stops21h 41m
Deal found 10/1![Delta logo]()
$851
This United Airlines deal was found by Cheapflights users on 9/29. 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 11/302:45 pm -
1 stop16h 45m
Wed 12/96:00 am -
2 stops19h 49m
Deal found 9/29![United Airlines logo]()
$843
This United Airlines deal was found by Cheapflights users on 9/30. 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 10/315:00 am -
2 stops21h 30m
Fri 11/66:00 am -
2 stops42h 30m
Deal found 9/30![United Airlines logo]()
$872
Last-minute flights from San Francisco to PortoDiscover last-minute flight deals from San Francisco to Porto. Data last updated October 2, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Porto. Data last updated October 2, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/29. 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.
Sat 10/247:35 pm -
1 stop32h 10m
Fri 11/64:00 pm -
1 stop30h 45m
Deal found 9/29![TAP AIR PORTUGAL logo]()
$656
This Booking.com deal was found by Cheapflights users on 9/28. 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.
Mon 11/27:25 pm -
1 stop31h 50m
Wed 11/1812:05 pm -
1 stop36h 25m
Deal found 9/28![SWISS logo]()
$731
This Gotogate deal was found by Cheapflights users on 9/27. 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 11/87:25 pm -
1 stop31h 50m
Thu 11/1912:05 pm -
1 stop36h 25m
Deal found 9/27![SWISS logo]()
$711
This Delta deal was found by Cheapflights users on 9/28. 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.
Sun 11/88:55 am -
1 stop15h 20m
Mon 11/1611:15 am -
1 stop32h 30m
Deal found 9/28![Delta logo]()
$738
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/1012:05 pm -
1 stop13h 25m
Tue 11/1712:35 pm -
1 stop15h 35m
Deal found 9/30![United Airlines logo]()
$735
This Air France deal was found by Cheapflights users on 9/28. 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.
Tue 11/103:10 pm -
1 stop22h 50m
Wed 11/184:10 pm -
1 stop27h 35m
Deal found 9/28![Multiple Airlines logo]()
$737
This Expedia deal was found by Cheapflights users on 9/29. 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.
Sun 11/298:25 am -
2 stops20h 25m
Tue 12/87:20 pm -
1 stop29h 10m
Deal found 9/29![Multiple Airlines logo]()
$723
This Gotogate deal was found by Cheapflights users on 9/29. 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.
Mon 11/307:25 pm -
1 stop31h 50m
Wed 12/912:05 pm -
1 stop36h 25m
Deal found 9/29![SWISS logo]()
$701
One-way flights from San Francisco to PortoSearch for one-way flight options from San Francisco to Porto. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
Search for one-way flight options from San Francisco to Porto. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/1911:59 pm -
3 stops39h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 11/194:40 pm -
2 stops40h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/134:20 pm -
3 stops47h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/177:35 pm -
2 stops56h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 10/1. 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.
Fri 12/117:15 pm -
2 stops33h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 9/27. 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 10/108:30 pm -
1 stop34h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 9/30. 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.
Fri 10/1611:59 pm -
3 stops48h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 9/27. 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.
Fri 10/91:00 pm -
3 stops37h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 9/30. 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 10/128:30 pm -
3 stops43h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![Multiple Airlines logo]()
$435
Find flight deals from San Francisco to Porto
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $656 (Gotogate) |
One-way from | $333 (Kiwi.com) |
Popular in | June |
Cheapest in | March |
Average price | $962 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 2, 2026.
Use the filters below to find and compare flights from San Francisco to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Mon 10/5
8:30 pm-9:40 pm
3 stops41h 10m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$436
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Thu 10/15
4:30 pm-5:10 pm
3 stops40h 40m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$440
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Fri 11/20
9:15 am-5:30 pm
3 stops24h 15m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$462
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sun 11/1
7:00 am-9:30 am
2 stops18h 30m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$463
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Wed 10/7
4:35 pm-11:10 pm
1 stop22h 35m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$475
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sat 11/7
3:00 pm-9:30 am
1 stop34h 30m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$479
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Tue 10/6
4:20 pm-6:50 am
2 stops30h 30m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$494
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Tue 10/6
4:20 pm-10:45 pm
1 stop22h 25m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$511
Quickest round-trip
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Tue 12/1
12:00 pm-9:30 am
1 stop13h 30m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$582
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Wed 12/16
1:50 pm-3:25 pm
1 stop17h 35m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$641
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from San Francisco 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 Francisco to Porto in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| 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 | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on San Francisco-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-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 Francisco-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 Francisco to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from San Francisco with our price prediction graph.
SFO-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 Francisco to Porto
How far ahead should I book a flight from San Francisco to Porto?
To ensure you get the cheapest price possible for a flight from San Francisco to Porto, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from San Francisco to Porto?
Currently, March is the cheapest month in which you can book a flight from San Francisco to Porto (average of $612). Flying from San Francisco to Porto in June is currently the most expensive (average of $1,327). 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 Francisco to Porto?
Airfare is below average for this route at the moment.
San Francisco to Porto flights typically cost between $809 and $1,297 in October.The cheapest round-trip price found within the last 5 days was $656 on TAP AIR PORTUGAL (Oct 24-Nov 6).
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 2, 2026.
Read reviews from past customers who have flown KLM,Delta, andUnited Airlines from San Francisco to Porto. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.2
Overall
7.8
Comfort
7.7
Boarding
7.8
Food
7.3
Crew
8.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Comfort
7.7
Boarding
7.8
Food
7.3
Crew
8.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Comfort
7.7
Boarding
7.8
Food
7.3
Crew
8.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Comfort
7.7
Boarding
7.8
Food
7.3
Crew
8.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Comfort
7.7
Boarding
7.8
Food
7.3
Crew
8.4
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Entertainment
7.2
Overall
7.8
Comfort
7.7
Boarding
7.8
Food
7.3
Crew
8.4
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 Francisco 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
Browse thousands of different options on Cheapflights for your next trip
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San Francisco and Porto flights
Browse other San Francisco and Porto flight options. Last updated on October 2, 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 2, 2026.
Top 10 airlines flying from San Francisco to Porto
Discover the top 10 airlines that operate flights from San Francisco 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 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$431 | Average$952 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$480 | Average$612 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$625 | Average$962 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$654 | Average$789 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$682 | Average$993 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$683 | Average$1,040 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$756 | Average$1,203 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$764 | Average$1,109 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$855 | Average$1,100 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$911 | Average$1,287 | FlexibilityNo cancel fee | On-time67% |