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Cheap flights from San Francisco to Portland from £52

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — PDX
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Portland are usually found in September or January, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from San Francisco to Portland

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Portland
Explore the most affordable flight options available from San Francisco to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2026.

Tue 25/805:50
SFO
-
PDX
2 stops8h 15m
Southwest
Thu 27/805:35
PDX
-
SFO
2 stops7h 35m
Southwest
Deal found 29/7£121
Thu 27/814:50
SFO
-
PDX
1 stop8h 15m
Southwest
Thu 3/912:40
PDX
-
SFO
2 stops6h 10m
Southwest
Deal found 29/7£122
Thu 17/920:50
SFO
-
PDX
Nonstop1h 55m
United Airlines
Mon 21/907:00
PDX
-
SFO
Nonstop1h 51m
United Airlines
Deal found 29/7£123
Tue 25/808:23
SFO
-
PDX
Nonstop1h 46m
Alaska Airlines
Mon 31/818:53
PDX
-
SFO
Nonstop1h 53m
Alaska Airlines
Deal found 29/7£125
Mon 24/811:30
SFO
-
PDX
2 stops10h 15m
Southwest
Mon 31/805:35
PDX
-
SFO
2 stops7h 35m
Southwest
Deal found 28/7£125
Tue 27/1006:45
SFO
-
PDX
2 stops8h 20m
Southwest
Fri 30/1008:00
PDX
-
SFO
1 stop6h 55m
Southwest
Deal found 28/7£127
Thu 20/820:50
SFO
-
PDX
Nonstop1h 55m
United Airlines
Mon 24/807:00
PDX
-
SFO
Nonstop1h 51m
United Airlines
Deal found 28/7£128
Fri 9/1022:39
SFO
-
PDX
Nonstop1h 55m
United Airlines
Mon 12/1005:30
PDX
-
SFO
Nonstop1h 51m
United Airlines
Deal found 28/7£128
Fri 28/820:50
SFO
-
PDX
Nonstop1h 55m
United Airlines
Fri 4/911:15
PDX
-
SFO
Nonstop1h 56m
United Airlines
Deal found 29/7£129
Tue 25/808:23
SFO
-
PDX
Nonstop1h 46m
Alaska Airlines
Sat 29/810:37
PDX
-
SFO
Nonstop2h 02m
Alaska Airlines
Deal found 27/7£131
Wed 2/908:40
SFO
-
PDX
2 stops7h 30m
Southwest
Sun 6/910:50
PDX
-
SFO
1 stop11h 30m
Southwest
Deal found 26/7£131

Find flight deals from San Francisco to Portland

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Portland (PDX). 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 29 July 2026.

Round-trip from

£121

One-way from

£52

Popular in

March

Cheapest in

September

Average price

£225
Southwest
  • Southwest
  • 1/10-5/10
  • 4 total stops
  • 15h 00m total
  • San Francisco to Portland
Search Deals
Delta
  • Delta
  • 1/9
  • 1 total stop
  • 6h 34m total
  • San Francisco to Portland
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£2 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Portland 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 29 July 2026.
Use the filters below to find and compare flights from San Francisco to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Sat 19/9

06:25-11:35

1 stop5h 10m

Portland

Sun 20/9

18:30-23:55

1 stop5h 25m

£123

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Wed 2/9

07:40-16:10

2 stops8h 30m

Portland

Sun 6/9

10:50-18:50

1 stop8h 00m

£127

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Fri 25/9

06:23-11:46

1 stop5h 23m

Portland

Mon 28/9

17:49-23:51

1 stop6h 02m

£129

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Tue 15/9

06:23-11:46

1 stop5h 23m

Portland

Sun 20/9

17:49-23:51

1 stop6h 02m

£129

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Wed 9/9

14:15-20:02

1 stop5h 47m

Portland

Sun 13/9

05:30-09:34

1 stop4h 04m

£129
Fastest return journey

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Thu 5/11

07:47-09:35

Nonstop1h 48m

Portland

Sun 8/11

14:47-16:44

Nonstop1h 57m

£131

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Wed 19/8

17:36-22:02

1 stop4h 26m

Portland

Fri 21/8

05:30-09:36

1 stop4h 06m

£147

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Wed 2/9

06:20-11:45

1 stop5h 25m

Portland

Sat 5/9

13:42-20:05

1 stop6h 23m

£148

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Thu 20/8

07:23-09:07

Nonstop1h 44m

Portland

Sun 23/8

07:03-09:07

Nonstop2h 04m

£150

San FranciscoPortland

SFO - PDX

SFOPDX

San Francisco

Thu 27/8

08:25-20:49

1 stop12h 24m

Portland

Mon 31/8

07:03-09:07

Nonstop2h 04m

£154

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 18 resultsSorted by cheapest first
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Best time to book a flight from San Francisco to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from San Francisco 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 San Francisco to Portland

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

The best time to book flights from San Francisco to Portland is 83 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 San Francisco to Portland?

Currently, September is the cheapest month in which you can book a flight from San Francisco to Portland (average of £183). Flying from San Francisco to Portland in March is currently the most expensive (average of £255). 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 SFO to PDX?

Find hourly flight availability from San Francisco to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 July 2026.

When flying from San Francisco to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 77% versus a flight at midday.

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

Airfare is below average for this route at the moment.

San Francisco to Portland flights typically cost between £137 and £294 in August.
The cheapest return price found within the last 5 days was £121 on Southwest (25 Aug–27 Aug).

Related info for your journey

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

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

    Within the past month, 3 users have taken a look at flights from San Francisco to Portland.

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

    Alaska Airlines, Southwest, and Delta can get you from San Francisco to Portland in just under 1h 50m. Your travel time can differ by up to 3h 33m. San Francisco and Portland 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 are the most reliable airlines from San Francisco to Portland?

    Before booking your flight to Portland from San Francisco, check out the most reliable airlines to get you to your destination on time: Asiana Airlines (83%), Air China (83%), Avianca( 80%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Portland 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 San Francisco to Portland?

    Currently, September is the cheapest month in which you can book a flight from San Francisco to Portland (average of £183). Flying from San Francisco to Portland in March is currently the most expensive (average of £255). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Portland

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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 San Francisco to Portland?

Deals for San Francisco to Portland 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 San Francisco to Portland?

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 San Francisco to Portland.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Portland, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for San Francisco to Portland 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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