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Route Reliability

Pittsburgh → Seattle

PIT–SEA · 2,125 miles · Pittsburgh International Airport to Seattle–Tacoma International Airport

71
Usually Fine
WanderNerd Reliability Score
69%
Arrive within 15 minutes
10 min
Average arrival delay
1.3%
Cancelled
471
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 69% of the time across 471 flights. No comparison to make.

What the data says

Morning-you made the right choice.

PIT–SEA flights departing between 6–9 AM arrived on time 77% of the time, versus 65% between 6–9 PM.

Skip Thursday if you can.

PIT–SEA flights arrived on time 78% of the time on Wednesdays. On Thursdays: 63%.

Ticking up lately.

PIT–SEA flights arrived on time 69% of the time over the last three months in the data, compared with 64% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon68%(71 flights)
  • Tue77%(60 flights)
  • Wed78%(73 flights)
  • Thu63%(65 flights)
  • Fri67%(72 flights)
  • Sat68%(57 flights)
  • Sun64%(66 flights)
On-time by departure window
  • 6–9 AM77%(155 flights)
  • 6–9 PM65%(309 flights)
On-time trend by month
84%
May

Jun 53% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%60
July 202559%59
August 202560%58
September 202585%52
October 202594%33
November 202592%26
December 202545%29
January 202671%21
February 202676%21
March 202650%26
April 202673%30
May 202684%49

Keep nerding

Based on 471 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.