BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SEAPSC

Seattle, WA (SEA) to Pasco/Kennewick/Richland, WA (PSC) flight delay odds

Historically, 82.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,818 flights.

HISTORICAL ROUTE SIGNALLower disruption
82.9%arrived on time
9.5%30+ min late
1.0%cancelled
1,818scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.2%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+2.4 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Late morning57983.9%9.3%1.6%
Afternoon48385.9%9.3%0.2%
Evening25282.9%6.7%1.6%
Night47479.3%11.0%0.8%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday27084.4%7.8%0.4%
Tuesday26187.7%6.9%0.4%
Wednesday24384.0%9.1%1.2%
Thursday26278.6%11.8%1.5%
Friday27179.0%11.1%2.6%
Saturday24885.1%7.7%0.8%
Sunday26381.7%12.2%0.0%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,54284.2%9.3%0.7%
Alaska Airlines27675.7%10.5%2.5%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202518581.6%10.3%0.0%
August 202518086.1%7.2%1.1%
September 202516786.2%6.6%0.0%
October 202521383.6%8.9%0.9%
November 202516383.4%6.7%4.3%
December 202515982.4%8.2%0.6%
January 202614679.5%13.7%0.7%
February 202613882.6%11.6%0.7%
March 202613175.6%15.3%3.1%
April 202610983.5%11.9%0.0%
May 202613082.3%10.8%0.0%
June 20269787.6%4.1%0.0%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline50.9%
Late aircraft18.8%
National airspace8.7%
Weather21.0%
Security0.5%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.