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Cheap flights from Portland to San Francisco from £45

PDX — SFO
25 Oct — 1 Nov1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portland to San Francisco are usually found in January or October, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Portland to San Francisco

Thu 15/1021:33 -
Nonstop1h 53m
Mon 19/1021:25 -
Nonstop1h 49m
Deal found 20/9£93
Mon 19/1021:33 -
Nonstop1h 53m
Thu 22/1009:03 -
Nonstop1h 49m
Deal found 20/9£94
Mon 19/1021:33 -
Nonstop1h 53m
Mon 26/1009:03 -
Nonstop1h 49m
Deal found 21/9£94
Sat 24/1019:37 -
Nonstop1h 51m
Sat 31/1007:43 -
Nonstop1h 46m
Deal found 21/9£95
Thu 22/1021:33 -
Nonstop1h 53m
Mon 26/1009:03 -
Nonstop1h 49m
Deal found 21/9£97
Wed 11/1117:53 -
Nonstop1h 56m
Thu 12/1107:42 -
Nonstop1h 46m
Deal found 21/9£98
Wed 4/1107:04 -
Nonstop1h 56m
Wed 11/1118:59 -
Nonstop1h 48m
Deal found 20/9£99
Tue 13/1014:53 -
Nonstop1h 54m
Sat 17/1007:43 -
Nonstop1h 46m
Deal found 21/9£101
Wed 11/1119:35 -
1 stop3h 58m
Thu 12/1114:12 -
1 stop4h 43m
Deal found 23/9£104
Tue 20/1014:53 -
Nonstop1h 54m
Tue 20/1018:59 -
Nonstop1h 51m
Deal found 21/9£106
Mon 9/1114:50 -
Nonstop1h 54m
Mon 16/1121:05 -
Nonstop1h 49m
Deal found 21/9£107

Find flight deals from Portland to San Francisco

Round-trip from

£93

One-way from

£45

Popular in

March

Cheapest in

January

Average price

£171

Good round-trip deal

£1,468 or less

Good one-way deal

£49 or less
Alaska Airlines
  • Alaska Airlines
  • 15/10-19/10
  • Nonstop
  • 3h 42m total
  • Portland to San Francisco
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Alaska Airlines
  • Alaska Airlines
  • 17/12-31/12
  • Nonstop
  • 2h 03m total
  • Portland to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£5 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Portland to San Francisco.
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Price to beat on a one-way flight from Portland to San Francisco.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Portland to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Wed 4/11

05:30-07:23

Nonstop1h 53m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£45

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Wed 21/10

17:48-19:47

Nonstop1h 59m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£45

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Thu 5/11

09:00-10:55

Nonstop1h 55m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£45

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Tue 27/10

17:48-19:47

Nonstop1h 59m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£51

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Wed 21/10

11:25-17:05

1 stop5h 40m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£52

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Tue 20/10

05:30-09:38

1 stop4h 08m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£52

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Wed 28/10

11:25-17:05

1 stop5h 40m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£52

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Thu 31/12

12:26-17:35

1 stop5h 09m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£52

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Thu 29/10

08:00-14:55

1 stop6h 55m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£57

PortlandSan Francisco

PDX Portland - SFO San Francisco

PDXSFO

Portland

Thu 19/11

15:35-20:10

1 stop4h 35m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£57

Flights are sorted by cheapest return flights first.

Deals found on 23/9

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Portland to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Portland with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Portland to San Francisco

How far ahead should I book a flight from Portland to San Francisco?

The best time to book flights from Portland to San Francisco is 63 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Portland to San Francisco (average of £132). Flying from Portland to San Francisco in March is currently the most expensive (average of £234). 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.

What is the cheapest time of day to fly from PDX to SFO?

A simple way to save on the total cost of your ticket is to fly from Portland to San Francisco at midday. If you’re flexible enough to do this you can expect to save up to 96% on your trip compared to booking a flight in the evening.

How much does it cost for a return flight from Portland to San Francisco?

Airfare is below average for this route at the moment.

Portland to San Francisco flights typically cost between £114 and £240 in October.
The cheapest return price found within the last 5 days was £93 on Alaska Airlines (15 Oct–19 Oct).

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Portland to San Francisco, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,966 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
12,966 reviews
Alaska Airlines
7.9
Good
12,966 reviews
Check prices

Boarding

8.1

Food

7.0

Overall

7.9

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • What airports do I use to fly from Portland to San Francisco?

    You will need to book a flight from Portland to San Francisco if you want to fly from Portland to San Francisco. At least 1 airline has flights from Portland (PDX) to San Francisco (SFO) on a regular basis. There are 37 flights to San Francisco from the Portland airport per day. If you manage to book one that is nonstop, then you can expect the flight time from PDX to SFO to be around 1h 50m.

  • How popular is this Portland to San Francisco flight route?

    Within the past month, 8 users have taken a look at flights from Portland to San Francisco.

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

    There are many flights that can get you from Portland to San Francisco in 1h 54m. Fly via Alaska Airlines, Delta, or Southwest to get the fastest option. Portland and San Francisco are separated by a distance of 550 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from Portland to San Francisco round-trip?

    According to our current data, Alaska Airlines (£122), offers the cheapest pricing from Portland to San Francisco. Users have found that Alaska Airlines is 35% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Portland to San Francisco?

    No one likes to see their flight delayed. When booking a flight from Portland to San Francisco consider choosing SkyWest Airlines (96%), Horizon Air (71%) or United Airlines (67%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portland to San Francisco?

    Looking at all options, your cheapest flight can be booked for £42. While the most popular route (Portland - San Francisco) can be booked for £172 on average, our data indicates £845 when flying from Portland to San Francisco.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Portland to San Francisco (average of £132). Flying from Portland to San Francisco in March is currently the most expensive (average of £234). 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.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Bruno
Santa Cruz
Roseville
Newark
Bodega Bay
Sunnyvale

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portland to San Francisco

Portland to Los Angeles flights
Portland to Las Vegas flights

Top airline flying from Portland to San Francisco

AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£122Average£185FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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Deals for Portland to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portland to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to San Francisco.

Can Cheapflights find flights from Portland to San Francisco with no change fees?

Yes, we can. To see specific flights from Portland to San Francisco with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Yes! Start tracking prices for Portland to San Francisco flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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