Cheap flights from San Francisco (SFO) to Porto (OPO) from $454

Currently, January is the cheapest month in which you can book a flight from San Francisco to Porto (average of $523). Flying from San Francisco to Porto in June is currently the most expensive (average of $1,016). 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.

• Can I find flights from San Francisco to Porto for under $1,000 on Cheapflights?

  Yes, there are multiple flights from San Francisco to Porto for under $1,000. The cheapest flight booked recently is on Multiple Airlines for just $934, but on average you can expect to pay $998.

• Are there last-minute flights available from San Francisco to Porto for under $1,000?

  There are currently 4+ open flights from San Francisco to Porto within the next 7 days for less than $1,000.

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

  United Airlines, at $976, was found to be the cheapest airline from San Francisco to Porto.Alternate airlines to your destination round-trip include Air Canada and Vueling. Users have found that United Airlines is 2% cheaper than the other options available to this destination.

• What are the most popular airlines that fly from San Francisco to Porto?

  When booking a flight from San Francisco to Porto, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

• What does SFO to OPO mean?

  San Francisco Airport is SFO and Porto Airport is OPO. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

• Where are the most common layover locations when flying from San Francisco to Porto?

  Of the flights from San Francisco to Porto that have layovers, most of them stop in Lisbon.

• What are some popular things to do or see while on a layover in Lisbon?

  The majority of Lisbon visitors spend their time at Chiado, Praça do Príncipe Real, and Praça de D. Pedro IV. Travelers on a layover in Lisbon can visit Chiado, Praça do Príncipe Real, and Praça de D. Pedro IV, by traveling 4.5 mi, 4.2 mi, and 4.3 mi, respectively after landing at Lisbon Humberto Delgado. Travelers can book a car rental at Lisbon Humberto Delgado for about $25 per day to make their sightseeing more efficient.

• Where are the least popular layover locations for San Francisco to Porto flights?

  Of the flights from San Francisco to Porto that have layovers, the fewest flights stop in Frankfurt am Main.

• Can I find deals for flights from San Francisco to Porto that include extra baggage allowance?

  The amount of baggage you can bring on your San Francisco to Porto flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

• Can I find deals on flights from San Francisco to Porto with specific airlines?

  Yes, Cheapflights allows you to browse and filter San Francisco to Porto flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

  Yes. Cheapflights offers flight deals from San Francisco 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.

• Can I find deals for flights from San Francisco to Porto that allow pets onboard?

  Many airlines flying from San Francisco to Porto offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

• Can I find deals on last-minute flights from San Francisco to Porto?

  Yes, you can often find last-minute deals on San Francisco to Porto flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

• How recently were the San Francisco to Porto flight deals updated?

  The San Francisco to Porto flight deals you see on this page were last updated on 5/9.