Cheap Flights from Portland to San Francisco from US$165

Frequently Asked Questions

• What are the cheapest flights from Portland to San Francisco (PWM-SFO)?

  Based on Trip.com data, Delta Air Lines offers one-way fares as low as US$165 on Cheapest nonstop routes (e.g. PWM to SFO on Tue, Oct 20), while Delta Air Lines offers Cheapest nonstop round-trips from US$325 departing on Tue, Sep 22 and returning on Mon, Sep 28.

• Which airlines offer flights from Portland to San Francisco?

  At the moment, several airlines serve connecting flights from Portland to San Francisco, including: American Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• How long is a flight from Portland to San Francisco?

  It takes about 6 hours 35 minutes to fly from Portland to San Francisco.

• When is the best time to book flights from Portland to San Francisco?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Portland to San Francisco?

  To find best deals on flights from Portland to San Francisco, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Oct 20, with one-way flights priced at just US$165.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Francisco travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Portland (PWM) to San Francisco (SFO) the cheapest?

  The cheapest months to fly from Portland to San Francisco is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Portland to San Francisco on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Portland to San Francisco on September 29, 2026 with Delta Air Lines, with prices starting at US$186.

• Which airports fly into San Francisco from Portland?

  You can land at any one of the following hubs in San Francisco: San Francisco International Airport (SFO). Flying from Portland International Jetport to San Francisco International Airport (PWM-SFO) is by far the most common option on this route.

• Is there any time difference between Portland and San Francisco?

  The time difference between San Francisco and Portland is 3h.

• How do I change or cancel my ticket from Portland to San Francisco?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Portland to San Francisco?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Portland to San Francisco is US$374. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Portland to San Francisco?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Portland to San Francisco is US$566. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Portland to San Francisco on Trip.com?

  Enter Portland and San Francisco, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.