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Route Reliability

PSC → Seattle

PSC–SEA · 172 miles · PSC Airport to Seattle–Tacoma International Airport

92
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
0 min
Average arrival delay
1.0%
Cancelled
2,721
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines92%1,106 flights
  2. 2.Alaska Airlines85%1,615 flights

What the data says

The 3–6 AM departure wins.

PSC–SEA flights departing between 3–6 AM arrived on time 93% of the time, versus 79% between 9 AM–12 PM.

Friday is doing you no favors.

PSC–SEA flights arrived on time 92% of the time on Tuesdays. On Fridays: 83%.

Delta Air Lines has a slight edge here.

Delta Air Lines arrived on time 92% of the time on this route; Alaska Airlines managed 85%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon90%(401 flights)
  • Tue92%(379 flights)
  • Wed90%(372 flights)
  • Thu86%(391 flights)
  • Fri83%(391 flights)
  • Sat89%(356 flights)
  • Sun87%(402 flights)
On-time by departure window
  • 3–6 AM93%(312 flights)
  • 6–9 AM92%(769 flights)
  • 9 AM–12 PM79%(163 flights)
  • 12–3 PM86%(683 flights)
  • 3–6 PM88%(530 flights)
  • 6–9 PM82%(235 flights)
On-time trend by month
89%
May

Jun 85% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%246
July 202586%241
August 202587%254
September 202589%225
October 202590%228
November 202589%206
December 202587%234
January 202686%203
February 202689%180
March 202692%197
April 202689%209
May 202689%269

Keep nerding

Based on 2,721 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.