Best Time to Fly BIL to SLC: On-Time Stats by Hour & Airline
Billings Logan International → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 91.6% of Billings (BIL) to Salt Lake City (SLC) flights arrived on time (1,074 scheduled flights). That is 14.0 points above the national average of 77.6%.
Among 2 airlines, Delta Air Lines led with 94.0% on time and SkyWest Airlines was last with 90.4%.
Over 24 months, Monday was the most reliable day (93% on time) and February the worst month (79%).
The cancellation rate was 0.6% (US average 1.8%).
BIL to SLC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 94.0% | 96 min | 0.3% | 366 |
| SkyWest Airlines | 90.4% | 80 min | 0.7% | 708 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BIL to SLC
On-time arrival % by scheduled departure hour (local time), 2,126 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.4% | 0.4% | 730 |
| 11am–12pm | 94.2% | 0.7% | 719 |
| 12pm–1pm | Limited data | 4 | |
| 1pm–2pm | Limited data | 3 | |
| 2pm–3pm | Limited data | 4 | |
| 5pm–6pm | 97.3% | 0.0% | 37 |
| 6pm–7pm | 87.3% | 0.5% | 629 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BIL to SLC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 92.3% | +0.5 pts | 2.5% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 86.6% | -5.2 pts | 0.0% | 82 |
| Summer peak (Jun 15 - Aug 15) | 91.7% | -0.0 pts | 0.8% | 368 |
| All other days | 91.8% | — | 0.4% | 1,636 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).