King County International Airport - Boeing Field
Seattle, United StatesBFI / KBFI
Regional airport · 63 direct destinations · 2 runways · longest runway 10,007 ft
48 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Seattle → Portland
BFI
SeattleKing County International Airport - Boeing Field
SeattleKing County International Airport - Boeing FieldPDXPortlandPortland International Airport
PortlandPortland International Airport- Distance
- 135 mi
- Estimated flight time
- ~45m
Same local time in Seattle and Portland.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 3 flights a day, observed from October 2025 to September 2026.
- 3
- flights per day
- 4
- busiest month · Jun
- 2
- quietest month · May
- 40 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 3Jan2026
- 3Feb
- 3Mar
- 3Apr
- 2May
- 4Jun
- 4Jul
- 4Aug
- 4Sep
- 3Oct2025
- 3Nov
- 3Dec
In December 2025 we saw less traffic at Seattle in general than usual; compare that month with care.
Airlines
Who flies it
Air Todaysummer
Boeingall year
UPS Airlinesautumn
Ameriflightwinter
United Airlinesnow and then
Delta Air Linesnow and then
Through the day
Departure times
Local time in Seattle. Most departures between 15:00 and 18:00.
- 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
- 3Mon
- 3.6Tue
- 3.7Wed
- 3.9Thu
- 3.8Fri
- 2.6Sat
- 2.8Sun
Fleet
Aircraft observed
- Pilatus PC-12PC1253%
- Cessna Citation LatitudeC68A3%
- Bombardier Challenger 350CL352%
- Cessna Citation LongitudeC7001%
- Cessna Citation ExcelC56X1%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 3 | 82 |
|
| February 2026 | 3 | 90 |
|
| March 2026 | 3 | 93 |
|
| April 2026 | 3 | 77 |
|
| May 2026 | 2 | 89 |
|
| June 2026 | 4 | 134 |
|
| July 2026 | 4 | 135 |
|
| August 2026 | 4 | 122 |
|
| September 2026 | 4 | 133 |
|
| October 2025 | 3 | 94 |
|
| November 2025 | 3 | 83 |
|
| December 2025 | 3 | 78 |
|
Airlines observed on this route
From observed callsign routes on BFI-PDX - not a booking guarantee.
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: 63.
- 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
57 °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 King County International Airport - Boeing Field (BFI) and Portland International Airport (PDX) covers approximately 135 mi. The estimated flight time is around 45m. Air Today, Ameriflight, Boeing, Delta Air Lines, United Airlines and UPS 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 King County International Airport - Boeing Field and Portland International Airport is approximately 135 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 BFI and PDX has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Air Today, Ameriflight, Boeing, Delta Air Lines, United Airlines and UPS Airlines.
- How often is there a flight from Seattle to Portland?
- On average around 3 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,210 observed flights. Mainly Air Today, Boeing, UPS 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.