Seattle–Tacoma International Airport
Seattle, United StatesSEA / KSEA
International hub · 132 direct destinations · 3 runways · longest runway 11,900 ft
50 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Seattle → Pasco
SEA
SeattleSeattle–Tacoma International Airport
SeattleSeattle–Tacoma International AirportPSCPascoTri Cities Airport
PascoTri Cities Airport- Distance
- 171 mi
- Estimated flight time
- ~50m
Same local time in Seattle and Pasco.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 7 flights a day, observed from October 2025 to September 2026.
- 7
- flights per day
- 9
- busiest month · May
- 6
- quietest month · Feb
- 35 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 7Jan2026
- 6Feb
- 6Mar
- 6.5Apr
- 9May
- 7Jun
- 7Jul
- 7Aug
- 8Sep
- 7Oct2025
- 7Nov
- 7Dec
Airlines
Who flies it
SkyWest Airlinesall year
Horizon Airall year
Alaska Airlineswinter
Through the day
Departure times
Local time in Seattle. Most departures between 21:00 and 00:00.
- 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
- 6.8Mon
- 6.8Tue
- 6.5Wed
- 6.6Thu
- 7Fri
- 7Sat
- 6.6Sun
Fleet
Aircraft observed
- Embraer 175E75L93%
- Boeing 737-800B7383%
- Boeing 737-900B7392%
- Boeing 737 MAX 9B39M2%
- Boeing 737 MAX 8B38M0%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 7 | 193 |
|
| February 2026 | 6 | 177 |
|
| March 2026 | 6 | 185 |
|
| April 2026 | 6.5 | 188 |
|
| May 2026 | 9 | 240 |
|
| June 2026 | 7 | 208 |
|
| July 2026 | 7 | 222 |
|
| August 2026 | 7 | 211 |
|
| September 2026 | 8 | 227 |
|
| October 2025 | 7 | 224 |
|
| November 2025 | 7 | 202 |
|
| December 2025 | 7 | 168 |
|
Airlines observed on this route
From observed callsign routes on SEA-PSC - 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: 132.
- Direct destinations observed from Pasco: 18.
The airports on this route
Tri Cities Airport
Pasco, United StatesPSC / KPSC
Regional airport · 18 direct destinations · 3 runways · longest runway 7,707 ft
41 °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.
BFI PSCKing County International Airport - Boeing FieldSeattle is about 6 mi from Seattle.View route →PAE PSCSeattle Paine Field International AirportEverett is about 32 mi from Seattle.View route →SEA ALWWalla Walla Regional AirportWalla Walla is about 42 mi from Pasco.View route →SEA YKMYakima Air Terminal McAllister FieldYakima is about 71 mi from Pasco.View route →
About the route from Seattle to Pasco
The observed direct connection between Seattle–Tacoma International Airport (SEA) and Tri Cities Airport (PSC) covers approximately 171 mi. The estimated flight time is around 50m. Alaska Airlines, Horizon Air and SkyWest Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Seattle from Pasco by air?
- The great-circle distance between Seattle–Tacoma International Airport and Tri Cities Airport is approximately 171 mi.
- How long is the flight from Seattle to Pasco?
- Based on the distance, the estimated flight time is about 50m. This is an estimate, not a schedule.
- Is there a direct connection from Seattle to Pasco?
- Yes, a direct connection between SEA and PSC has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Alaska Airlines, Horizon Air and SkyWest Airlines.
- How often is there a flight from Seattle to Pasco?
- On average around 7 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 2,445 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 Pasco?
- Same local time in Seattle and Pasco.
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.