Title: CA $916 Cheap Flights from Porto (OPO) to San Francisco (SFO) - Expedia.ca ![Sunset view of the Golden Gate Bridge and fog from Battery Spencer, Golden Gate National Recreation Area, in San Francisco, California.](https://images.trvl-media.com/place/508803/0ac688ba-e7fa-4fb1-9f85-037d98869bf8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/508803/0ac688ba-e7fa-4fb1-9f85-037d98869bf8.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $916 Cheap Flights from Porto (OPO) to San Francisco (SFO) [View CA $916 flight on Mon, Nov 17, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:OPO,to:SFO,departure:17/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:915.50&airProductToken=AQqbAQoxCMGCARIEODU4NBjucyCMGCiYrP0CMOis_QI4VkAAWAFqBUJBU0lDcghWTE44QzVCVwoyCMGCARIEODYzMhiMGCCjsQEo2639AjCSs_0COFZAAVgBagVCQVNJQ3IIVkxOOEM1QlcKMgjBggESBDE5OTYYo7EBILJxKIC1_QIw6bb9AjhCQAFYAWoFQkFTSUNyCFZMTjhDNUJXEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Porto Airport (OPO) to San Francisco International Airport (SFO) - ![TAP Portugal](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TP.svg) TAP Portugal [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TP"}}]) - ![Lufthansa](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![Swiss International Air Lines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![Turkish Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TK.svg) Turkish Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![KLM](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![Iberia](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.ca/Flights-Search?leg1=from:opo,to:sfo,departure:09/11/2025TANYT&leg2=from:sfo,to:opo,departure:16/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Porto (OPO) to San Francisco (SFO) Prices were available within the past 7 days and start at CA $916 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ## Find the cheapest month to fly from Porto (OPO) to San Francisco (SFO) ### February is typically the cheapest month to fly From CA $802 - CA $1,275 per traveller. Flight from Porto to San Francisco (OPO - SFO) route information | Origin airport | Dr. Francisco de Sa Carneiro | | --- | --- | | Destination airport | San Francisco Intl. | | Distance | 8913 km | ## Porto to San Francisco Flights **The easy way to book your flights from Porto to San Francisco**  With Expedia, it’s simple to find and book flights to San Francisco from Porto whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to San Francisco Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Porto to San Francisco today, tomorrow, or this week.   **Save dollars with cheap flights from Dr. Francisco de Sa Carneiro, OPO to San Francisco Intl., SFO**  Sort your search results by price to find great deals on your flight from Porto to San Francisco—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to San Francisco from Porto currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to San Francisco   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to San Francisco from Porto**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to San Francisco with Expedia today. ## Frequently asked questions ### How much is a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to San Francisco Intl. Airport (SFO)? > If you're planning on travelling between OPO and San Francisco Intl. Airport (SFO), round-trip journeys start from . This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal slip through your fingers. Book today and save yourself money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from OPO to San Francisco Airport? > We get that life can throw the odd curveball, so we've made it as easy as possible for you to cancel your flight online. Just head to the [Customer Service Portal](https://www.expedia.ca/helpcenter) and follow the instructions. ### How do I find cheap flights from OPO to San Francisco Airport that have flexible change policies? > Select our "No change fees" filter to find flexible travel options for your flight from Porto Airport to San Francisco Airport. This allows you to snag a fantastic price ahead of time and still have the freedom to reschedule without any extra fees. Just keep in mind that fare differences may still apply. ### How many hours is the flight from OPO to San Francisco Airport? > Averaging 14 hours and 51 minutes, the journey from Porto Airport to San Francisco Airport is a long one. To make your journey more pleasant, pack a good neck pillow and a set of noise-cancelling earplugs. ### How far is the flight from Porto Airport to SFO? > With around 9,000 kilometres separating Maia and San Francisco, your flight will be a long one. Pack wisely and make your journey comfortable. Things like an eye mask and a good travel pillow should be in your carry-on bag. ### Which airlines fly direct from OPO to SFO? > Currently, no airlines offer flights directly from Porto Airport to SFO. You'll need to book a flight with at least one stop. To get the best connections and price, lock in your airfare well ahead of time. ### Are Porto Airport to SFO flight tickets cheaper when they're purchased at the last minute? > It is possible to get great last-minute deals from Porto Airport to SFO, but it can also be hit-or-miss. As many airlines advertise prices up to 12 months in advance, it's worth keeping an eye on fares early and being ready to pounce when you see a good bargain. 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