United Airlines flights from Portland to San Francisco (PDX - SFO)

• Can I get a flight from Portland to San Francisco on United Airlines for under $300?

  Portland to San Francisco flights on United Airlines are currently available under $300. 2 flights have been found by Cheapflights users under that amount. To find flights for your dates, click here.

• How do most travelers feel about United Airlines?

  The average rating from 4,132 United Airlines reviews by Cheapflights users is 6.3 (out of a maximum rating of 10). If you are considering flying PDX-SFO with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to San Francisco with United Airlines.

Currently, the most affordable month to book a United Airlines flight from Portland to San Francisco in September, with an average price of $268. Conversely, traveling with United Airlines from Portland to San Francisco in June will be the most expensive, with an average cost of $384. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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).