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Route Reliability

BIL → Salt Lake City

BIL–SLC · 387 miles · BIL Airport to Salt Lake City International Airport

97
Nerd Approved
WanderNerd Reliability Score
92%
Arrive within 15 minutes
5 min early
Average arrival delay
0.6%
Cancelled
1,074
Flights in the data

Data through May 2026.

Delta Air Lines is the only airline in this data on this route, arriving on time 92% of the time across 1,074 flights. No comparison to make.

What the data says

Morning flights do better here.

BIL–SLC flights departing between 9 AM–12 PM arrived on time 96% of the time, versus 86% between 6–9 PM.

Saturday comes out ahead.

A small edge: 96% on time on Saturdays against 90% on Wednesdays.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon95%(154 flights)
  • Tue94%(156 flights)
  • Wed90%(153 flights)
  • Thu90%(153 flights)
  • Fri90%(154 flights)
  • Sat96%(143 flights)
  • Sun92%(154 flights)
On-time by departure window
  • 3–6 AM94%(364 flights)
  • 9 AM–12 PM96%(360 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM—(7 flights)
  • 6–9 PM86%(334 flights)
On-time trend by month
95%
May

Jun 97% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%90
July 202592%91
August 202591%93
September 202599%90
October 202594%92
November 202595%84
December 202587%90
January 202694%85
February 202685%78
March 202688%91
April 202690%90
May 202695%93

Keep nerding

Based on 1,074 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.