Salt Lake City (SLC) to Billings (BIL): On-Time Performance
Data through May 2026
Salt Lake City (SLC) to Billings (BIL) effectively runs on two schedules. In September 2025, 97% of arrivals were on time; in February 2026 that fell to 80% — a 17-point seasonal swing. Across the full period the route averages 90% on-time against a national 78%. Morning departures also hold up better than evening ones (96% vs 85%), which matters most in the rough months.
- On-time
- 90%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 2.9
- last 12 months
- Duration
- 1h 27m
- scheduled
- Distance
- 387 mi
Best airline from SLC to BIL
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 92% | 5 min | 0.4% | 1,393 |
| Delta Air Lines | 85% | 12 min | 0.5% | 731 |
Monthly on-time trend
Best time to fly from SLC to BIL
Aim for departures around 9 a.m. (96% on-time); avoid 9 p.m. departures (84%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 88% | 10 min |
| Tuesdaybest | 93% | 4 min |
| Wednesday | 89% | 6 min |
| Thursday | 88% | 8 min |
| Friday | 89% | 8 min |
| Saturday | 92% | 10 min |
| Sunday | 88% | 8 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft15%
- Airline operations69%
- National airspace system4%
- Weather12%
Frequently asked questions
- How often are flights from SLC to BIL delayed?
- 11% of SLC–BIL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 8 minutes.
- Which airline is most reliable from SLC to BIL?
- SkyWest Airlines has the best on-time record on this route at 92%, based on 1,393 flights. 2 airlines flew SLC–BIL frequently enough to compare in this period.
- What is the best time of day to fly from SLC to BIL?
- Departures around 9 a.m. have the best record (96% on-time), while departures around 9 p.m. have the worst (84%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to BIL?
- The scheduled SLC–BIL flight time averages 1h 27m over 387 miles. Actual arrival times vary — flights on this route land 15+ minutes late 11% of the time.
- How often are SLC to BIL flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to BIL?
- February 2026 was the roughest month in this dataset, with only 80% of arrivals on time. The best was September 2025 at 97%. If your dates are flexible, that 17-point gap is worth planning around.
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Based on 2,124 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.