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Flight Reliability

AS 140 · Alaska Airlines

Fairbanks → Seattle (FAI–SEA)100% of its flights flew this route. The rest (LIH–SAN) are included in these numbers.

94
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
4 min early
Average arrival delay
0.3%
Cancelled
9 min early
Median arrival delay

Based on 290 historical flights. Data through May 2026.

What the data says

12–3 PM has a slight edge.

Departures between 12–3 PM arrived on time 88% of the time, against 83% between 9 AM–12 PM.

Tuesday is the weak spot.

AS 140 arrived on time 93% of the time on Wednesdays. On Tuesdays: 81%.

A bit ahead of the FAI–SEA route.

AS 140 arrived on time 88% of the time, versus 83% across the FAI–SEA route.

Better than the Alaska Airlines network average.

AS 140 arrived on time 88% of the time, versus 80% across the Alaska Airlines network.

The breakdown

On-time by weekday
  • Mon85%(41 flights)
  • Tue81%(42 flights)
  • Wed93%(41 flights)
  • Thu90%(40 flights)
  • Fri90%(41 flights)
  • Sat90%(41 flights)
  • Sun84%(43 flights)
On-time by departure window
  • 9 AM–12 PM83%(35 flights)
  • 12–3 PM88%(254 flights)
On-time trend by month
95%
Apr

Jun 87% → Apr 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202587%30
July 202594%31
August 202584%31
September 202597%30
October 202587%31
November 202593%29
December 202577%30
January 202677%30
February 202691%11
March 202687%15
April 202695%21
Departures on time
89%
Diverted
0%
Flights flown
289
Months covered
11

Same route, other flights

Keep nerding

Based on 290 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.