Compare offers from the best airlines and travel agencies

If you are looking for a cheap flight from San Francisco to Porto, Fly Scanner finds in seconds the most convenient offers for you by comparing available airline tickets from the best airlines and online travel agencies. From low cost flights to non-stop flights, Fly Scanner will propose you only the most convenient offers based on the selected filters.

Find the ideal San Francisco - Porto flight

Fly Scanner compares the offers of over 300 airlines and shows you the most convenient flights according to your needs, including special promotions designed in collaboration with the best travel agencies. Looking for direct flights only? Just tick the appropriate filter and evaluate only San Francisco - Porto flights without stopovers .

Find the San Francisco - Porto low cost flight you prefer

Fly Scanner, once you enter your departure and arrival cities, will compare thousands of offers based on your needs.

Filter your search

Fly Scanner offers the possibility to customize your search according to different criteria:

• Only direct flights
• Only flights of one airline
• Only flights departing or arriving at a specific airport