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Route Reliability

MRY → Seattle

MRY–SEA · 750 miles · MRY Airport to Seattle–Tacoma International Airport

81
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
3 min
Average arrival delay
1.5%
Cancelled
334
Flights in the data

Data through May 2026.

Alaska Airlines is the only airline in this data on this route, arriving on time 79% of the time across 334 flights. No comparison to make.

What the data says

Mornings have a slight edge.

Departures between 9 AM–12 PM arrived on time 83% of the time, against 78% between 6–9 PM.

Wednesdays have been rough.

MRY–SEA flights arrived on time 88% of the time on Tuesdays and just 71% on Wednesdays. That gap is worth planning around.

Slipping a little lately.

MRY–SEA flights arrived on time 84% of the time over the last three months in the data, compared with 89% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue88%(41 flights)
  • Wed71%(42 flights)
  • Thu74%(49 flights)
  • Fri78%(51 flights)
  • Sat81%(42 flights)
  • Sun79%(52 flights)
On-time by departure window
  • 9 AM–12 PM83%(42 flights)
  • 3–6 PM80%(55 flights)
  • 6–9 PM78%(232 flights)
On-time trend by month
87%
May

Jun 63% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%30
July 202577%30
August 202558%31
September 202587%30
October 202573%30
November 202586%29
December 202577%30
January 202695%20
February 202694%16
March 202687%23
April 202679%29
May 202687%31

Keep nerding

Based on 334 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.