$392+ Cheap flights from Porto (OPO) to San Francisco (SFO)
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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Porto to San Francisco 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.The best prices from Porto to San Francisco are usually found in January or November, booked 44 days in advance, depart on a Wednesday or Thursday and return on a Sunday
Cheap flight deals from Porto to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to San Francisco (SFO). 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 December 18, 2024.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $566 (Mytrip) |
One-way from | $392 (Kiwi.com) |
Popular in | October |
Cheapest in | January |
Average price | $928 |
Find flight deals from Porto to San Francisco
Best flights from Porto to San FranciscoDiscover carefully curated flight deals from Porto to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.
Discover carefully curated flight deals from Porto to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.
This Mytrip deal was found by Cheapflights users on 12/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gotogate deal was found by Cheapflights users on 12/17. 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.
This SWISS deal was found by Cheapflights users on 12/17. 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.
This United Airlines deal was found by Cheapflights users on 12/17. 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.
This Booking.com deal was found by Cheapflights users on 12/17. 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.
This British Airways deal was found by Cheapflights users on 12/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This AirNGo deal was found by Cheapflights users on 12/17. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 12/17. 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.
This Gotogate deal was found by Cheapflights users on 12/17. 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.
This Brussels Airlines deal was found by Cheapflights users on 12/16. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Justfly.com deal was found by Cheapflights users on 12/17. 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.
This Expedia deal was found by Cheapflights users on 12/17. 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.
Find flights from Porto to San Francisco within your budget
Customize your flight search to find flights from Porto to San Francisco 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 December 18, 2024.
Fly from
Fly to
Route
Depart
Return
Price
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 1/31
5:30 pm-2:55 pm
2 stops29h 25m
San Francisco
Fri 2/7
7:15 pm-11:10 pm
2 stops19h 55m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 1/31
6:55 am-3:55 pm
1 stop17h 00m
San Francisco
Fri 2/7
7:15 pm-5:00 pm
1 stop13h 45m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 1/16
12:05 pm-4:25 pm
1 stop36h 20m
San Francisco
Sat 2/1
7:25 pm-11:10 am
1 stop31h 45m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 4/4
12:10 pm-3:31 pm
2 stops35h 21m
San Francisco
Mon 4/14
2:40 pm-3:45 pm
1 stop17h 05m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 1/16
6:00 am-9:42 pm
2 stops23h 42m
San Francisco
Sat 2/1
8:30 am-11:40 am
2 stops19h 10m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 1/16
12:25 pm-12:22 am
2 stops19h 57m
San Francisco
Sat 2/1
5:30 pm-7:15 pm
1 stop17h 45m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Mon 1/20
6:20 am-11:50 am
1 stop37h 30m
San Francisco
Sun 1/26
9:21 am-10:55 am
2 stops17h 34m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 1/16
12:25 pm-12:22 am
2 stops19h 57m
San Francisco
Sat 2/1
5:30 pm-8:00 pm
2 stops18h 30m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 4/25
10:00 pm-6:00 pm
1 stop28h 00m
San Francisco
Sun 5/4
8:00 pm-8:00 am
1 stop28h 00m
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 1/31
12:55 pm-6:45 pm
2 stops37h 50m
San Francisco
Fri 2/7
8:35 pm-12:05 pm
2 stops31h 30m
Compare providers for flights from Porto to San Francisco
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 Porto to San Francisco in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Porto-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Porto-San Francisco 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 Porto-San Francisco 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 Porto to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Porto with our price prediction graph.
Travel insights for flights from Porto to San Francisco
Get recent, data-driven insights about flights from Porto to San Francisco including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from Porto to San Francisco?
Use this chart to determine the optimal time to book a round-trip flight from Porto to San Francisco. Price data was last updated on December 13, 2024.
The price you pay for your flight from Porto to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Porto to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Porto to San Francisco (average of $276). Flying from Porto to San Francisco in June is currently the most expensive (average of $381). 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 OPO to SFO?
Find hourly flight availability from Porto to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.
When flying from Porto to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Rainfall in San Francisco by month
Plan your trip to San Francisco by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.
Temperature in San Francisco by month
Plan your trip to San Francisco by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated December 18, 2024.
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag
Food
Entertainment
Crew
Overall
Boarding
Comfort
Reviews
Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag
Related info for your journey
Find useful and relevant information for your journey from Porto to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Porto to San Francisco
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Porto to San Francisco
Discover the top 2 airlines that operate flights from Porto to San Francisco. 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 December 18, 2024.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$647 | Average$729 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$665 | Average$898 | FlexibilityNo cancel fee | On-time76% |