Billings (BIL) to Salt Lake City (SLC): On-Time Performance
Data through July 2026
Billings (BIL) to Salt Lake City (SLC) effectively runs on two schedules. In September 2025, 98% of arrivals were on time; in February 2025 that fell to 73% — a 25-point seasonal swing. Across the full period the route averages 92% on-time against a national 78%.
- On-time
- 92%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 2.9
- last 12 months
- Duration
- 1h 31m
- scheduled
- Distance
- 387 mi
Best airline from BIL to SLC
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 93% | 12 min | 0.8% | 762 |
| SkyWest Airlines | 91% | 7 min | 0.5% | 1,455 |
Monthly on-time trend
Best time to fly from BIL to SLC
Aim for departures around 5 p.m. (97% on-time); avoid 6 p.m. departures (87%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 93% | 16 min |
| Tuesday | 91% | 7 min |
| Wednesday | 89% | 7 min |
| Thursday | 92% | 6 min |
| Friday | 91% | 9 min |
| Saturday | 93% | 9 min |
| Sunday | 90% | 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 aircraft3%
- Airline operations68%
- National airspace system9%
- Weather19%
Frequently asked questions
- How often are flights from BIL to SLC delayed?
- 9% of BIL–SLC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 9 minutes.
- Which airline is most reliable from BIL to SLC?
- Delta Air Lines has the best on-time record on this route at 93%, based on 762 flights. 2 airlines flew BIL–SLC frequently enough to compare in this period.
- What is the best time of day to fly from BIL to SLC?
- Departures around 5 p.m. have the best record (97% on-time), while departures around 6 p.m. have the worst (87%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BIL to SLC?
- The scheduled BIL–SLC flight time averages 1h 31m over 387 miles. Actual arrival times vary — flights on this route land 15+ minutes late 9% of the time.
- How often are BIL to SLC flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BIL to SLC?
- February 2025 was the roughest month in this dataset, with only 73% of arrivals on time. The best was September 2025 at 98%. If your dates are flexible, that 25-point gap is worth planning around.
Explore related pages
More routes from BIL
Other ways to fly to Salt Lake City (SLC)
Related guides
Based on 2,217 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.