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Flight Reliability

AS 607 · Alaska Airlines

Ontario → Seattle (ONT–SEA)99% of its flights flew this route. The rest (LAS–SEA, SAN–BOS) are included in these numbers.

97
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
6 min early
Average arrival delay
1.0%
Cancelled
10 min early
Median arrival delay

Based on 204 historical flights. Data through May 2026.

What the data says

Monday is the weak spot.

AS 607 arrived on time 97% of the time on Sundays. On Mondays: 87%.

A bit ahead of the ONT–SEA route.

AS 607 arrived on time 93% of the time, versus 87% across the ONT–SEA route.

Better than the Alaska Airlines network average.

AS 607 arrived on time 93% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon87%(31 flights)
  • Tue92%(26 flights)
  • Wed92%(25 flights)
  • Thu97%(31 flights)
  • Fri90%(30 flights)
  • Sat93%(27 flights)
  • Sun97%(32 flights)
On-time by departure window
  • 6–9 AM93%(200 flights)
  • 12–3 PM—(1 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
100%
May

Nov 86% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
November 202586%29
December 202590%31
January 202695%20
February 202696%23
March 202690%31
April 202693%29
May 2026100%31
Departures on time
93%
Diverted
0%
Flights flown
202
Months covered
9

Same route, other flights

Keep nerding

Based on 204 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.