Cheap flights from Portland to Northern California

View AU$75 flight on Wed, 17 Dec. 2025Opens in a new window

Popular airlines from Portland to Northern California

  • American Airlines

    American Airlines

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Portland (PDX) to Northern California (ACV)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, 15 Aug. - Mon, 18 Aug.
PDX
Portland
SFO
San Francisco
AU$232 Return, found 1 day ago
AU$232
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 15 Aug. from Portland to San Francisco, returning Mon, 18 Aug., priced at AU$232 found 1 day ago
Delta
Thu, 28 Aug. - Thu, 4 Sep.
PDX
Portland
SFO
San Francisco
AU$240 Return, found 2 days ago
AU$240
Return
found 2 days ago
Select Delta flight, departing Thu, 28 Aug. from Portland to San Francisco, returning Thu, 4 Sep., priced at AU$240 found 2 days ago
American Airlines
Thu, 4 Sep. - Sun, 7 Sep.
PDX
Portland
SFO
San Francisco
AU$244 Return, found 6 days ago
AU$244
Return
found 6 days ago
Select American Airlines flight, departing Thu, 4 Sep. from Portland to San Francisco, returning Sun, 7 Sep., priced at AU$244 found 6 days ago
Alaska Airlines
Fri, 15 Aug. - Mon, 18 Aug.
PDX
Portland
SFO
San Francisco
AU$255 Return, found 1 day ago
AU$255
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 15 Aug. from Portland to San Francisco, returning Mon, 18 Aug., priced at AU$255 found 1 day ago
Alaska Airlines
Thu, 28 Aug. - Thu, 4 Sep.
PDX
Portland
SFO
San Francisco
AU$256 Return, found 2 days ago
AU$256
Return
found 2 days ago
Select Alaska Airlines flight, departing Thu, 28 Aug. from Portland to San Francisco, returning Thu, 4 Sep., priced at AU$256 found 2 days ago
United
Fri, 15 Aug. - Mon, 18 Aug.
PDX
Portland
SFO
San Francisco
AU$301 Return, found 1 day ago
AU$301
Return
found 1 day ago
Select United flight, departing Fri, 15 Aug. from Portland to San Francisco, returning Mon, 18 Aug., priced at AU$301 found 1 day ago

Find the cheapest month to fly from Portland (PDX) to San Francisco (SFO)

September is typically the cheapest month to fly

From AU$73 - AU$224 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.