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Cheap flights from Portland to San Francisco from £51

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SFO
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Portland to San Francisco are usually found in January or December, booked 81 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Portland to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 September 2025.

Round-trip from

£93

One-way from

£51

Popular in

March

Cheapest in

January

Average price

£153

Good one-way deal

£149 or less
Alaska Airlines
  • Alaska Airlines
  • 24/10-25/10
  • Nonstop
  • 3h 56m total
  • Portland to San Francisco
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Delta
  • Delta
  • 4/11
  • 1 total stop
  • 6h 00m total
  • Portland to San Francisco
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Highest demand for flights based on searches. 14% potential increase in price (£18 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from Portland to San Francisco.
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Find flight deals from Portland to San Francisco

Cheapest flights from Portland to San Francisco
Explore the most affordable flight options available from Portland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2025.

Fri 24/1014:30PDX - SFO
Nonstop1h 51mAlaska Airlines
Wed 29/1008:00SFO - PDX
Nonstop1h 49mAlaska Airlines
Deal found 15/9£93
Wed 8/1007:00PDX - SFO
Nonstop1h 48mAlaska Airlines
Wed 8/1010:59SFO - PDX
1 stop5h 51mAlaska Airlines
Deal found 16/9£96
Wed 22/1017:55PDX - SFO
Nonstop2h 09mAlaska Airlines
Wed 29/1013:11SFO - PDX
1 stop3h 39mAlaska Airlines
Deal found 16/9£100
Sat 18/1010:30PDX - SFO
Nonstop1h 53mAlaska Airlines
Sat 18/1015:01SFO - PDX
Nonstop1h 53mAlaska Airlines
Deal found 15/9£103
Wed 19/1106:00PDX - SFO
Nonstop1h 50mUnited Airlines
Sat 22/1121:00SFO - PDX
Nonstop1h 51mUnited Airlines
Deal found 15/9£104
Fri 31/1019:29PDX - SFO
1 stop22h 20mFrontier
Fri 7/1120:09SFO - PDX
1 stop15h 47mFrontier
Deal found 16/9£106
Mon 27/1017:41PDX - SFO
Nonstop2h 06mAlaska Airlines
Thu 30/1008:00SFO - PDX
Nonstop1h 49mAlaska Airlines
Deal found 15/9£108
Mon 13/1005:30PDX - SFO
Nonstop1h 53mUnited Airlines
Sat 18/1012:55SFO - PDX
Nonstop1h 47mUnited Airlines
Deal found 15/9£111
Sat 11/1014:30PDX - SFO
Nonstop1h 50mHawaiian Airlines
Thu 16/1008:00SFO - PDX
Nonstop1h 47mHawaiian Airlines
Deal found 14/9£111
Wed 15/1007:25PDX - SFO
2 stops6h 45mSouthwest
Wed 15/1015:50SFO - PDX
1 stop7h 55mSouthwest
Deal found 14/9£114
Fri 24/1021:35PDX - SFO
Nonstop1h 50mAlaska Airlines
Mon 27/1008:00SFO - PDX
Nonstop1h 49mAlaska Airlines
Deal found 16/9£115
Wed 15/1007:00PDX - SFO
Nonstop1h 48mAlaska Airlines
Mon 20/1008:00SFO - PDX
1 stop22h 20mAlaska Airlines
Deal found 15/9£117

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portland to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 September 2025.
Use the filters below to find and compare flights from Portland to San Francisco that are best for you.

Fly from

Portland

Fly to

San Francisco

Route

Depart

Return

Price

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Fri 7/11

15:29-17:22

Nonstop1h 53m

San Francisco

Thu 11/12

14:59-16:50

Nonstop1h 51m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Sun 12/10

05:30-07:23

Nonstop1h 53m

San Francisco

Thu 16/10

22:40-00:28

Nonstop1h 48m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Thu 22/1

17:30-19:19

Nonstop1h 49m

San Francisco

Sun 1/2

11:30-13:19

Nonstop1h 49m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Fri 10/10

15:50-17:41

Nonstop1h 51m

San Francisco

Tue 14/10

19:03-20:50

Nonstop1h 47m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Wed 22/10

07:00-08:48

Nonstop1h 48m

San Francisco

Mon 27/10

08:00-09:49

Nonstop1h 49m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Fri 7/11

15:29-17:22

Nonstop1h 53m

San Francisco

Mon 8/12

14:59-16:50

Nonstop1h 51m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Thu 23/10

14:30-16:21

Nonstop1h 51m

San Francisco

Mon 27/10

08:00-09:49

Nonstop1h 49m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Thu 16/10

07:00-08:48

Nonstop1h 48m

San Francisco

Mon 20/10

08:00-09:47

Nonstop1h 47m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Tue 11/11

07:00-08:55

Nonstop1h 55m

San Francisco

Sun 7/12

21:47-23:36

Nonstop1h 49m

£93

PortlandSan Francisco

PDX - SFO

PDXSFO

Portland

Sat 8/11

07:00-08:55

Nonstop1h 55m

San Francisco

Thu 11/12

21:47-23:36

Nonstop1h 49m

£93

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 22 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

Use this chart to determine the optimal time to book a return flight from Portland to San Francisco. Price data was last updated on 12 September 2025.

The best time to book flights from Portland to San Francisco is 81 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, February is the cheapest month in which you can book a flight from Portland to San Francisco (average of £538). Flying from Portland to San Francisco in July is currently the most expensive (average of £803). 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?

Find hourly flight availability from Portland to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

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 57% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 17 September 2025.
Read through reviews of airlines operating flights from Portland to San Francisco, such as Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Frontier
5.8
Fair
3,174 reviews
Check prices

Entertainment

4.4

Crew

6.7

Boarding

6.1

Food

4.7

Comfort

5.5

Overall

5.8

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

MCO - DFW

Frontier likes to promote themselves as being a cheap airline to fly, but in the end, that’s laughable. Only AFTER I booked through you, and then had to go to their site to choose my seats and baggage, did I find they charged a $75 “Passenger” fee. No explanation on what that was even for. Then for them to charge $5 for sodas, and who knows what for any small snack, is just insulting.
Frontier
5.8
Fair
3,174 reviews
Frontier
5.8
Fair
3,174 reviews
Check prices

Entertainment

4.4

Crew

6.7

Boarding

6.1

Food

4.7

Comfort

5.5

Overall

5.8

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

MCO - DFW

Frontier likes to promote themselves as being a cheap airline to fly, but in the end, that’s laughable. Only AFTER I booked through you, and then had to go to their site to choose my seats and baggage, did I find they charged a $75 “Passenger” fee. No explanation on what that was even for. Then for them to charge $5 for sodas, and who knows what for any small snack, is just insulting.

Related info for your journey

Find useful and relevant information for your journey from Portland to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 48 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 2h 06m.

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

    Within the past month, 14 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 53m. Fly via Alaska Airlines to get the fastest option. Portland and San Francisco are separated by a distance of 550 mi. Most flights are nonstop.

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

    According to our current data, Frontier (£28), offers the cheapest pricing from Portland to San Francisco. Users have found that Frontier is 81% 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 Frontier (100%), Horizon Air (90%) or Singapore Airlines (86%) 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 £102. While the most popular route (Portland - San Francisco) can be booked for £127 on average, our data indicates £157 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, February is the cheapest month in which you can book a flight from Portland to San Francisco (average of £538). Flying from Portland to San Francisco in July is currently the most expensive (average of £803). 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
Santa Cruz
Newark
South San Francisco
Bodega Bay
Pacific Grove

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Alternative routes for Portland to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Las Vegas flights
Portland to Los Angeles flights

Top airline flying from Portland to San Francisco

Discover the top airline that operate flights from Portland to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£28Average£92FlexibilityNo cancel feeOn-time62%
Search Frontier flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to San Francisco?

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.

Can Cheapflights notify me if prices for flights from Portland to San Francisco become cheaper?

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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