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Flight Reliability

AS 2136 · Alaska Airlines

Missoula → Seattle (MSO–SEA)82% of its flights flew this route. The rest (RNO–SEA, OAK–PDX) are included in these numbers.

97
Nerd Approved
WanderNerd Reliability Score
93%
Arrive within 15 minutes
3 min early
Average arrival delay
0.7%
Cancelled
8 min early
Median arrival delay

Based on 267 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

AS 2136 departing between 12–3 PM arrived on time 96% of the time, versus 82% between 6–9 PM.

Friday is doing you no favors.

AS 2136 arrived on time 100% of the time on Sundays and just 84% on Fridays. That gap is worth planning around.

Better than the MSO–SEA route average.

AS 2136 arrived on time 93% of the time, versus 83% across the MSO–SEA route.

Better than the Alaska Airlines network average.

AS 2136 arrived on time 93% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon97%(39 flights)
  • Tue92%(38 flights)
  • Wed92%(37 flights)
  • Thu97%(37 flights)
  • Fri84%(37 flights)
  • Sat90%(38 flights)
  • Sun100%(38 flights)
On-time by departure window
  • 3–6 AM—(1 flights)
  • 6–9 AM93%(183 flights)
  • 12–3 PM96%(69 flights)
  • 6–9 PM82%(11 flights)
On-time trend by month
100%
May

Jun 93% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 2025100%31
August 202590%31
September 202596%24
October 202578%23
January 2026100%24
February 202693%28
March 202697%31
April 202687%30
May 2026100%12
Departures on time
94%
Diverted
0.4%
Flights flown
264
Months covered
11

Same route, other flights

Keep nerding

Based on 267 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.