The Pasco to Seattle route connects Tri Cities Airport (PSC) in US with Seattle–Tacoma International Airport (SEA) in US. This short-haul flight covers approximately 172 miles (277 km) with a typical flight time of 34m. This route is served by 4 airlines: SkyWest, Horizon, Alaska Airlines and others. AirportRoutes has tracked 30 unique flight numbers on this route.
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The Pasco (PSC) → Seattle (SEA) route links Washington’s Tri-Cities to the state’s largest metro area over 172 miles (277 km). Typical nonstop flight time is about 45–60 minutes, making it a fast alternative to a multi-hour drive through changing weather and mountain passes. Travelers choose this hop for same-day business trips, connections to SEA’s extensive domestic and international network, and easy access to Seattle’s cruise terminals and downtown hotels. PSC offers a straightforward, low-stress departure experience, while SEA provides frequent onward options across the U.S. and abroad. It’s also popular for weekend getaways—Tri-Cities residents can reach Seattle’s neighborhoods, waterfront, and museums quickly, then return without losing much time to transit.
Book early if you need a specific departure time; limited daily frequencies can raise fares closer to travel dates, even on short routes. Compare one-way vs round-trip pricing in USD and consider flexible times to avoid peak business-hour demand. At PSC, arrive about 60–90 minutes before departure; lines are usually manageable, but regional flights board quickly. At SEA, plan extra time for terminal walking distances and potential security backups—using TSA PreCheck can help. Expect a brief cruise altitude and possible bumps from regional winds; keep essentials in a small personal item for easy access. If connecting at SEA, allow at least 90 minutes for domestic-to-domestic transfers, more if switching terminals.
Seattle blends waterfront scenery, iconic landmarks, and neighborhoods with distinct character. Start at Pike Place Market for fresh seafood, local crafts, and classic bites like salmon chowder; then head to the Space Needle and Museum of Pop Culture (MoPOP) at Seattle Center. The Seattle Art Museum and the revitalized waterfront piers offer an easy downtown pairing, while Kerry Park delivers postcard skyline views. For outdoor time, explore Discovery Park or take a ferry to Bainbridge Island for a quick escape. Food highlights include teriyaki, espresso culture, and seafood—especially Dungeness crab when in season. Great areas to base yourself: Downtown/Belltown for walkability, Capitol Hill for nightlife, and Ballard for breweries and Nordic heritage.
For the best blend of weather and value, fly April–May or September–October, when Seattle is milder and pricing often dips below summer peaks. June–August brings the driest days and longest daylight, but higher demand can push fares up. Winter (especially November–February) may offer lower prices, though rain and occasional wind can disrupt schedules. Notable draws include summer festivals and events like Seafair (late July–August), which can increase hotel and flight costs around SEA.
KPSCPSCSeattle–Tacoma International Airport
KSEASEA4
Operators30
Tracked Flights172
Miles34m
Flight Duration
| Airline | ICAO | IATA |
|---|---|---|
| SkyWest |
SKW
|
OO
|
| Horizon |
QXE
|
QX
|
| Alaska Airlines |
ASA
|
AS
|
| PenAir |
NLA
|
-
|
| Day | Flights Observed | Frequency | Activity |
|---|---|---|---|
| Monday | 49 | 10% |
|
| Tuesday | 74 | 16% |
|
| Wednesday | 67 | 14% |
|
| Thursday | 60 | 13% |
|
| Friday | 53 | 11% |
|
| Saturday | 88 | 19% |
|
| Sunday | 80 | 17% |
|
Pattern Analysis
| Airline | Flight Numbers | Aircraft Type | Typical Time | Days Active | Last Seen | Status |
|---|---|---|---|---|---|---|
|
Alaska Airlines
ASA
/ AS
|
B738 | 08:25 8:25 AM (Representative) |
M
T
W
T
F
S
S
|
Mar 13, 2026 | Active | |
|
Horizon
QXE
/ QX
|
|
E75L | 13:21 1:21 PM (Representative) |
M
T
W
T
F
S
S
|
May 9, 2026 | Active |
|
PenAir
NLA
|
- | E75L | - |
M
T
W
T
F
S
S
|
Oct 23, 2025 | Active |
|
SkyWest
SKW
/ OO
|
|
E170 | 17:30 5:30 PM (Representative) |
M
T
W
T
F
S
S
|
May 9, 2026 | Active |
| Departure Time | Operator | ICAO | IATA |
|---|---|---|---|
| 08:25 8:25 AM | Alaska Airlines |
ASA
|
AS
|
| 13:21 1:21 PM | Horizon |
QXE
|
QX
|
| 17:30 5:30 PM | SkyWest |
SKW
|
OO
|
Time Information
Times are shown in the departure airport's local timezone (KPSC - America/Los_Angeles).