Skip to content
WanderNerd
Check a flight

Flight Reliability

AS 23 · Alaska Airlines

New York → Seattle (JFK–SEA)

74
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
5 min
Average arrival delay
2.2%
Cancelled
3 min early
Median arrival delay

Based on 357 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

AS 23 departing between 6–9 PM arrived on time 83% of the time, versus 66% between 12–3 PM.

Friday is doing you no favors.

AS 23 arrived on time 81% of the time on Wednesdays and just 64% on Fridays. That gap is worth planning around.

A bit ahead of the JFK–SEA route.

AS 23 arrived on time 75% of the time, versus 69% across the JFK–SEA route.

A bit behind the Alaska Airlines network.

AS 23 arrived on time 75% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon72%(50 flights)
  • Tue77%(47 flights)
  • Wed81%(47 flights)
  • Thu78%(51 flights)
  • Fri64%(52 flights)
  • Sat80%(51 flights)
  • Sun71%(51 flights)
On-time by departure window
  • 9 AM–12 PM76%(263 flights)
  • 12–3 PM66%(68 flights)
  • 6–9 PM83%(18 flights)
On-time trend by month
87%
May

Jun 67% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202563%30
August 202577%31
September 202590%30
October 202584%31
November 202559%29
December 202553%30
January 202676%29
February 202683%23
March 202663%27
April 202693%29
May 202687%30
Departures on time
85%
Diverted
0%
Flights flown
349
Months covered
12

Same route, other flights

Keep nerding

Based on 357 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.