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Route Reliability

Salt Lake City → BIL

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

95
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
1 min early
Average arrival delay
0.5%
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 89% of the time across 1,074 flights. No comparison to make.

What the data says

Morning flights do better here.

SLC–BIL flights departing between 9 AM–12 PM arrived on time 96% of the time, versus 82% between 9 PM–12 AM.

Sunday scaries are real for this one.

SLC–BIL flights arrived on time 93% of the time on Saturdays. On Sundays: 86%.

Ticking up lately.

SLC–BIL flights arrived on time 89% of the time over the last three months in the data, compared with 85% in the three months before that.

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
  • Mon88%(154 flights)
  • Tue93%(156 flights)
  • Wed87%(153 flights)
  • Thu88%(153 flights)
  • Fri90%(153 flights)
  • Sat93%(145 flights)
  • Sun86%(155 flights)
On-time by departure window
  • 9 AM–12 PM96%(362 flights)
  • 3–6 PM90%(344 flights)
  • 9 PM–12 AM82%(363 flights)
On-time trend by month
89%
May

Jun 89% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%90
July 202588%91
August 202590%93
September 202597%90
October 202590%92
November 202594%85
December 202584%90
January 202688%86
February 202681%78
March 202690%91
April 202689%90
May 202689%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.