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Flight Reliability

AS 490 · Alaska Airlines

Seattle → New Orleans (SEA–MSY)86% of its flights flew this route. The rest (SAN–BOI, SEA–SLC) are included in these numbers.

84
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
1 min
Average arrival delay
0.4%
Cancelled
5 min early
Median arrival delay

Based on 273 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

AS 490 departing between 3–6 PM arrived on time 86% of the time, versus 75% between 9 PM–12 AM.

Sunday scaries are real for this one.

AS 490 arrived on time 90% of the time on Mondays and just 69% on Sundays. That gap is worth planning around.

A bit behind the Alaska Airlines network.

AS 490 arrived on time 77% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon90%(38 flights)
  • Tue84%(31 flights)
  • Wed83%(40 flights)
  • Thu69%(42 flights)
  • Fri78%(41 flights)
  • Sat71%(35 flights)
  • Sun69%(45 flights)
On-time by departure window
  • 12–3 PM—(1 flights)
  • 3–6 PM86%(35 flights)
  • 6–9 PM83%(36 flights)
  • 9 PM–12 AM75%(200 flights)
On-time trend by month
79%
May

Jun 55% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202555%29
July 202563%30
August 202562%26
September 202594%16
October 202591%23
November 202579%29
December 202578%23
January 202677%30
February 2026100%11
March 202693%15
April 202691%21
May 202679%19
Departures on time
76%
Diverted
0%
Flights flown
272
Months covered
12

Same route, other flights

Keep nerding

Based on 273 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.