Seattle–Tacoma International Airport
Seattle, United StatesSEA / KSEA
International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft
52 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Seattle → Portland
SEA
SeattleSeattle–Tacoma International Airport
SeattleSeattle–Tacoma International AirportPDXPortlandPortland International Airport
PortlandPortland International Airport- Distance
- 129 mi
- Estimated flight time
- ~45m
Same local time in Seattle and Portland.
Observed nonstop
How often does this route fly?
Frequency
Throughout the day
On average around 18.25 flights a day, observed from October 2025 to September 2026.
- 18.3
- flights per day
- 20
- busiest month · Oct
- 16
- quietest month · Jan
- 31 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 16Jan2026
- 16Feb
- 17Mar
- 18.5Apr
- 18May
- 19.5Jun
- 20Jul
- 20Aug
- 20Sep
- 20Oct2025
- 17.5Nov
- 17Dec
Airlines
Who flies it
SkyWest Airlinesall year
Horizon Airall year
Alaska Airlinesall year
ABX Airall year
Delta Air Linesall year
American Airlinesnow and then
Air Transport Internationalwinter
Sun Country Airlinesnow and then
Through the day
Departure times
Local time in Seattle. Most departures between 09:00 and 12:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 19.1Mon
- 18.4Tue
- 17.7Wed
- 17.9Thu
- 19Fri
- 17.5Sat
- 16.3Sun
Fleet
Aircraft observed
- Embraer 175E75L72%
- Boeing 737-800B7388%
- Boeing 737-900B7396%
- Boeing 737 MAX 9B39M5%
- Boeing 767-300B7632%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 16 | 487 |
|
| February 2026 | 16 | 456 |
|
| March 2026 | 17 | 520 |
|
| April 2026 | 18.5 | 532 |
|
| May 2026 | 18 | 516 |
|
| June 2026 | 19.5 | 569 |
|
| July 2026 | 20 | 605 |
|
| August 2026 | 20 | 579 |
|
| September 2026 | 20 | 598 |
|
| October 2025 | 20 | 602 |
|
| November 2025 | 17.5 | 540 |
|
| December 2025 | 17 | 480 |
|
Airlines observed on this route
From observed callsign routes on SEA-PDX - not a booking guarantee.
ABX Air
GB · ABXHub: CVG Hebron
Air Transport International
8C · ATNHub: CVG Hebron
Alaska Airlines
AS · ASAHub: SEA Seattle
American Airlines
AA · AALHub: DFW Dallas-Fort Worth
Delta Air Lines
DL · DALHub: ATL Atlanta
Horizon Air
QX · QXEHub: SEA Seattle
SkyWest Airlines
OO · SKWHub: ORD Chicago
Sun Country Airlines
SY · SCXHub: MSP Minneapolis
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Seattle: 132.
- Direct destinations observed from Portland: 93.
The airports on this route
Portland International Airport
Portland, United StatesPDX / KPDX
Major airport · 93 direct destinations · 3 runways · longest runway 11,001 ft
62 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Seattle to Portland
The observed direct connection between Seattle–Tacoma International Airport (SEA) and Portland International Airport (PDX) covers approximately 129 mi. The estimated flight time is around 45m. ABX Air, Air Transport International, Alaska Airlines, American Airlines, Delta Air Lines, Horizon Air, SkyWest Airlines and Sun Country Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Seattle from Portland by air?
- The great-circle distance between Seattle–Tacoma International Airport and Portland International Airport is approximately 129 mi.
- How long is the flight from Seattle to Portland?
- Based on the distance, the estimated flight time is about 45m. This is an estimate, not a schedule.
- Is there a direct connection from Seattle to Portland?
- Yes, a direct connection between SEA and PDX has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: ABX Air, Air Transport International, Alaska Airlines, American Airlines, Delta Air Lines, Horizon Air, SkyWest Airlines and Sun Country Airlines.
- How often is there a flight from Seattle to Portland?
- On average around 18.25 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 6,484 observed flights. Mainly SkyWest Airlines, Horizon Air, Alaska Airlines. That is an observation, not a timetable.
- What is the current time difference between Seattle and Portland?
- Same local time in Seattle and Portland.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.