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Flight Reliability

AS 552 · Alaska Airlines

Las Vegas → Seattle (LAS–SEA)96% of its flights flew this route. The rest (BOI–PDX) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
0 min
Average arrival delay
1.1%
Cancelled
8 min early
Median arrival delay

Based on 283 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

AS 552 departing between 3–6 AM arrived on time 100% of the time, versus 74% between 6–9 PM.

Sunday scaries are real for this one.

AS 552 arrived on time 95% of the time on Tuesdays and just 74% on Sundays. That gap is worth planning around.

A bit ahead of the Alaska Airlines network.

AS 552 arrived on time 84% of the time, versus 80% across the Alaska Airlines network.

Slipping a little lately.

AS 552 arrived on time 84% of the time over the last three months in the data, compared with 90% in the three months before that.

The breakdown

On-time by weekday
  • Mon85%(41 flights)
  • Tue95%(41 flights)
  • Wed86%(43 flights)
  • Thu87%(39 flights)
  • Fri76%(37 flights)
  • Sat83%(41 flights)
  • Sun74%(38 flights)
On-time by departure window
  • 3–6 AM100%(11 flights)
  • 3–6 PM84%(242 flights)
  • 6–9 PM74%(27 flights)
On-time trend by month
81%
May

Jun 100% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%11
August 202591%11
September 202586%29
October 202567%30
November 202574%27
December 202584%31
January 202694%31
February 202691%23
March 202685%26
April 202687%30
May 202681%31
Departures on time
80%
Diverted
0%
Flights flown
280
Months covered
11

Same route, other flights

Keep nerding

Based on 283 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.