Skip to content
WanderNerd
Check a flight

Flight Reliability

AS 280 · Alaska Airlines

Newark → Seattle (EWR–SEA)96% of its flights flew this route. The rest (SEA–EWR) are included in these numbers.

67
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
6 min
Average arrival delay
4.7%
Cancelled
4 min early
Median arrival delay

Based on 301 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

AS 280 departing between 6–9 AM arrived on time 100% of the time, versus 77% between 3–6 PM.

Sunday scaries are real for this one.

AS 280 arrived on time 88% of the time on Tuesdays and just 67% on Sundays. That gap is worth planning around.

A bit ahead of the EWR–SEA route.

AS 280 arrived on time 78% of the time, versus 74% across the EWR–SEA route.

Keep a backup plan handy.

AS 280 was cancelled 4.7% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon81%(48 flights)
  • Tue88%(42 flights)
  • Wed76%(41 flights)
  • Thu74%(43 flights)
  • Fri81%(48 flights)
  • Sat75%(20 flights)
  • Sun67%(45 flights)
On-time by departure window
  • 6–9 AM100%(10 flights)
  • 3–6 PM77%(277 flights)
On-time trend by month
95%
May

Jun 79% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202564%28
August 202570%30
September 202584%25
October 202582%27
November 202585%20
December 202574%23
January 202694%17
February 202678%18
March 202653%30
April 202695%21
May 202695%19
Departures on time
81%
Diverted
0%
Flights flown
287
Months covered
12

Same route, other flights

Keep nerding

Based on 301 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.