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Cheap flights from Seattle to Portland from £81

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PDX
3 Sep — 10 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Portland

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Portland
Explore the most affordable flight options available from Seattle to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 August 2026.

Sat 29/818:35
SEA
-
PDX
Nonstop1h 09m
Delta
Sun 30/815:25
PDX
-
SEA
Nonstop1h 12m
Delta
Deal found 30/7£117
Wed 16/918:55
SEA
-
PDX
Nonstop1h 07m
Delta
Wed 23/905:30
PDX
-
SEA
Nonstop1h 14m
Delta
Deal found 4/8£132
Sat 5/913:33
SEA
-
PDX
Nonstop1h 12m
Delta
Sun 6/905:30
PDX
-
SEA
Nonstop1h 07m
Delta
Deal found 31/7£139
Sat 29/807:08
SEA
-
PDX
1 stop9h 18m
Alaska Airlines
Sun 30/807:09
PDX
-
SEA
Nonstop1h 15m
Alaska Airlines
Deal found 30/7£141
Thu 3/920:59
SEA
-
PDX
Nonstop1h 03m
Delta
Mon 7/912:25
PDX
-
SEA
Nonstop1h 10m
Delta
Deal found 31/7£146
Sat 5/922:43
SEA
-
PDX
1 stop7h 35m
Alaska Airlines
Sun 6/909:20
PDX
-
SEA
Nonstop0h 57m
Alaska Airlines
Deal found 3/8£154
Fri 11/913:30
SEA
-
PDX
Nonstop1h 00m
Alaska Airlines
Fri 18/920:37
PDX
-
SEA
1 stop11h 55m
Alaska Airlines
Deal found 30/7£156
Fri 11/910:04
SEA
-
PDX
Nonstop1h 16m
Alaska Airlines
Fri 11/914:30
PDX
-
SEA
1 stop16h 50m
Alaska Airlines
Deal found 1/8£161
Wed 2/918:51
SEA
-
PDX
Nonstop0h 59m
Alaska Airlines
Sat 5/917:38
PDX
-
SEA
1 stop15h 42m
Alaska Airlines
Deal found 31/7£164
Thu 27/820:59
SEA
-
PDX
Nonstop1h 03m
Delta
Sun 30/807:05
PDX
-
SEA
Nonstop1h 12m
Delta
Deal found 30/7£165
Fri 4/911:59
SEA
-
PDX
Nonstop1h 11m
Alaska Airlines
Sun 6/915:03
PDX
-
SEA
1 stop8h 37m
Alaska Airlines
Deal found 1/8£171
Sat 29/807:25
SEA
-
PDX
Nonstop1h 11m
Delta
Sat 5/911:22
PDX
-
SEA
Nonstop1h 18m
Delta
Deal found 1/8£172

Find flight deals from Seattle to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 4 August 2026.

Round-trip from

£117

One-way from

£81

Popular in

June

Cheapest in

January

Average price

£149
Delta
  • Delta
  • 13/9-20/9
  • Nonstop
  • 2h 15m total
  • Seattle to Portland
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 31/8
  • Nonstop
  • 1h 02m total
  • Seattle to Portland
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle 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 4 August 2026.
Use the filters below to find and compare flights from Seattle to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Sat 17/10

08:40-09:47

Nonstop1h 07m

Portland

Wed 21/10

08:09-09:10

Nonstop1h 01m

£117

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Sat 29/8

18:35-19:44

Nonstop1h 09m

Portland

Sun 30/8

15:25-16:37

Nonstop1h 12m

£117

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Wed 16/9

18:55-20:02

Nonstop1h 07m

Portland

Wed 23/9

05:30-06:44

Nonstop1h 14m

£132

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Sun 20/9

07:30-08:43

Nonstop1h 13m

Portland

Wed 30/9

17:50-19:05

Nonstop1h 15m

£139

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Thu 3/9

20:59-22:02

Nonstop1h 03m

Portland

Mon 7/9

12:25-13:35

Nonstop1h 10m

£146

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Wed 26/8

16:06-17:14

Nonstop1h 08m

Portland

Sat 29/8

05:30-06:37

Nonstop1h 07m

£165

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Thu 27/8

13:33-14:45

Nonstop1h 12m

Portland

Thu 3/9

17:54-19:05

Nonstop1h 11m

£165

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Wed 16/9

11:32-18:37

1 stop7h 05m

Portland

Wed 23/9

11:48-12:50

Nonstop1h 02m

£175

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Sat 12/9

15:51-16:50

Nonstop0h 59m

Portland

Sat 19/9

07:03-17:39

1 stop10h 36m

£180

SeattlePortland

SEA - PDX

SEAPDX

Seattle/Tacoma Intl

Sun 13/9

07:08-08:18

Nonstop1h 10m

Portland

Sun 20/9

09:21-22:00

1 stop12h 39m

£182

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Showing 1-10 of 20 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Portland

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

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Portland (average of £74). Flying from Seattle to Portland in June is currently the most expensive (average of £302). 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 SEA to PDX?

Find hourly flight availability from Seattle 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 4 August 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 56% on flights from Seattle to Portland by exploring options for tickets in the afternoon.

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

Airfare is typical for this route at the moment.

Seattle to Portland flights typically cost between £94 and £191 in August.
The cheapest return price found within the last 5 days was £117 on Delta (29 Aug–30 Aug).

Related info for your journey

Find useful and relevant information for your journey from Seattle 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 Seattle to Portland flight route?

    This flight path from Seattle/Tacoma Intl to Portland was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Portland?

    There are many flights that can get you from Seattle to Portland in 1h 07m. Fly via Alaska Airlines or Delta to get the fastest option. Airlines will cover a distance of 129 mi. Most flights are nonstop.

  • What are the most reliable airlines from Seattle to Portland?

    Before booking your flight to Portland from Seattle, check out the most reliable airlines to get you to your destination on time: Scandinavian Airlines (84%), Korean Air (84%), KLM( 82%).

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

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

  • How can I find direct flights from Seattle to Portland?

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Portland?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Portland (average of £74). Flying from Seattle to Portland in June is currently the most expensive (average of £302). 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

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How does Cheapflights help users find flights from Seattle to Portland?

Deals for Seattle 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 Seattle to Portland?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Portland from Seattle.

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

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

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

Of course! You can now track prices for flights from Seattle to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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