Best Time to Fly SLC to BIL: On-Time Stats by Hour & Airline
Salt Lake City International → Billings Logan International
Data through July 2026 · Last updated October 18, 2026
1,074 flights were scheduled from Salt Lake City (SLC) to Billings (BIL) in the last 12 months, and 87.8% of those that flew arrived on time, 10.2 points above the US average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 91.8%, while Delta Air Lines trailed at 80.3%.
September has been the best month (94% on time) and Sunday the weakest day of the week (87%).
0.5% of flights were cancelled, versus 1.8% nationally.
SLC to BIL 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 |
|---|---|---|---|---|
| SkyWest Airlines | 91.8% | 64 min | 0.6% | 708 |
| Delta Air Lines | 80.3% | 58 min | 0.3% | 366 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SLC to BIL
On-time arrival % by scheduled departure hour (local time), 2,126 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 95.2% | 0.6% | 719 |
| 10am–11am | Limited data | 4 | |
| 11am–12pm | Limited data | 7 | |
| 3pm–4pm | 93.0% | 0.0% | 100 |
| 4pm–5pm | 88.5% | 0.3% | 568 |
| 9pm–10pm | 80.1% | 0.2% | 398 |
| 10pm–11pm | 86.8% | 0.4% | 267 |
| 11pm–12am | 85.7% | 0.0% | 63 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SLC to BIL
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) | 92.5% | +2.0 pts | 0.0% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 79.3% | -11.3 pts | 0.0% | 82 |
| Summer peak (Jun 15 - Aug 15) | 84.9% | -5.7 pts | 0.8% | 368 |
| All other days | 90.5% | — | 0.3% | 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).