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Route Reliability

BIL → AZA

BIL–AZA · 878 miles · BIL Airport to AZA Airport

93
Nerd Approved
WanderNerd Reliability Score
85%
Arrive within 15 minutes
6 min
Average arrival delay
0%
Cancelled
174
Flights in the data

Data through May 2026.

Allegiant Air is the only airline in this data on this route, arriving on time 85% of the time across 174 flights. No comparison to make.

What the data says

The 12–3 PM departure wins.

BIL–AZA flights departing between 12–3 PM arrived on time 87% of the time, versus 79% between 6–9 PM.

Saturdays have been rough.

BIL–AZA flights arrived on time 97% of the time on Wednesdays and just 55% on Saturdays. That gap is worth planning around.

It basically never cancels.

Out of 174 scheduled flights, only 0.0% were cancelled.

Recent months have been rougher.

BIL–AZA flights arrived on time 74% of the time over the last three months in the data, compared with 90% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon84%(37 flights)
  • Tue92%(13 flights)
  • Wed97%(37 flights)
  • Thu68%(19 flights)
  • Fri87%(37 flights)
  • Sat55%(11 flights)
  • Sun85%(20 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 9 AM–12 PM85%(27 flights)
  • 12–3 PM87%(53 flights)
  • 3–6 PM83%(41 flights)
  • 6–9 PM79%(28 flights)
  • 9 PM–12 AM86%(21 flights)
On-time trend by month
57%
May

Jun 92% → May 57% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202592%13
July 202581%16
September 202592%12
October 202586%14
November 202582%17
December 202576%21
January 202694%16
February 2026100%13
March 202681%16
April 202685%13
May 202657%14

Keep nerding

Based on 174 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.