Portland (PDX) to Seattle (SEA)
Flight time
≈ 1h 04m
Bearing
6° N
Portland (PDX) to Seattle (SEA) is 129 miles (208 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies PDX–SEA
Filed traffic dataIn May 2026, SkyWest Airlines operated the most departures, one of 5 carriers flying nonstop PDX–SEA; the Embraer E175 was the most common aircraft at 85% of departures; flights ran 76% full.
Departures
1,131
May 2026
Seats
100,595
both directions
Passengers
76,111
both directions
Load factor
75.7%
RPM ÷ ASM
Who flies PDX–SEA?
SkyWest Airlines operated the most nonstop PDX–SEA departures in May 2026 (615), one of 5 carriers on the route.
- OO
615 departures · 45,984 seats
Share of departures54.4%75.1%
Load
- QX
342 departures · 25,992 seats
Share of departures30.2%83.3%
Load
- AS
146 departures · 25,234 seats
Share of departures12.9%71.9%
Load
- DL
27 departures · 3,210 seats
Share of departures2.4%51.3%
Load
- WN
1 departures · 175 seats
Share of departures0.1%93.1%
Load
What plane flies PDX–SEA?
In May 2026, the Embraer E175 flew 85% of PDX–SEA departures — more than any other aircraft type.
- Embraer E175
957 departures · 78.0% load
84.6% - Boeing 737-900ER
59 departures · 70.7% load
5.2% - Boeing 737 MAX 9
44 departures · 69.7% load
3.9% - Boeing 737-800
39 departures · 72.0% load
3.5% - Airbus A220-100
14 departures · 64.1% load
1.2% - Airbus A220-300
8 departures · 51.2% load
0.7% - Boeing 737 MAX 8
8 departures · 76.4% load
0.7% - Boeing 757-200
2 departures · 27.8% load
0.2%
How has PDX–SEA traffic changed?
Nonstop PDX–SEA departures fell from 1,265 in June 2025 to 1,131 in May 2026.
Monthly nonstop PDX–SEA traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
1,265 departures · 87,024 passengers
79.4%
Load
July 2025
1,335 departures · 93,671 passengers
82.0%
Load
August 2025
1,284 departures · 91,225 passengers
81.0%
Load
September 2025
1,168 departures · 85,449 passengers
80.0%
Load
October 2025
1,157 departures · 85,587 passengers
81.2%
Load
November 2025
1,042 departures · 79,602 passengers
78.0%
Load
December 2025
1,043 departures · 78,293 passengers
77.0%
Load
January 2026
977 departures · 73,421 passengers
74.0%
Load
February 2026
880 departures · 68,158 passengers
77.1%
Load
March 2026
1,064 departures · 80,470 passengers
75.5%
Load
April 2026
1,103 departures · 73,360 passengers
70.2%
Load
May 2026
1,131 departures · 76,111 passengers
75.7%
Load
By direction
Each direction is filed separately — they rarely match.
SEA → PDX
73.4% full
566 departures · 36,834 passengers
PDX → SEA
77.9% full
565 departures · 39,277 passengers
Nonstop PDX–SEA traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Portland (PDX) from Seattle (SEA)?
PDX to SEA is 129 miles (208 km / 112 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from PDX to SEA?
A nonstop covers the 129-mile great-circle distance in roughly 1h 04m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies PDX–SEA?
In May 2026, the Embraer E175 flew the largest share of departures (84.6%), followed by the Boeing 737-900ER (5.2%).
What mileage do I earn flying PDX–SEA?
Distance-based programs credit off the 129-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Trip reports on YouTube
Fliers post trip reports from this route to YouTube. These three were matched automatically from public YouTube listings — The Frequent Flier does not host, review, or endorse them.
Genki's Travels
Alaska Airlines | Bombardier Q400 | Economy Class | Portland (PDX) to Seattle (SEA) | Trip Report
11:50 · Aug 2022
QFS Aviation
TRIP REPORT | Horizon Air - Dash 8 400 - Seattle (SEA) to Portland (PDX) | Economy
25:34 · Oct 2018
The Trip Reporter
TRIP REPORT | Alaska Airlines (Main Cabin) Seattle to Portland | Boeing 737-900
14:11 · Jan 2022
Source: YouTube. Titles, thumbnails, and channel names come from YouTube. Playing a video loads the YouTube player, and using it means you agree to the YouTube Terms of Service; the Google Privacy Policy applies.
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