BIL to SLC flight delays
Billings, MT (BIL) Salt Lake City, UT (SLC) · 387 miles
1,074 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
91.56%
Arrived on time
Within 15 minutes of schedule
0.65%
Cancelled
Share of scheduled flights
84 min
When late, late by
Average across delayed arrivals
8 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 84 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
Flights from Billings to Salt Lake City are among the most dependable in the record. A route this punctual is usually a short hop between airports with slots to spare.
The 2 airlines here are separated by under 3 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over January 2025 – August 2026, Delta Air Lines arrived on time most often on BIL to SLC. SkyWest Airlines was late most often. Flights ran closest to schedule in September and worst in December.
Every airline on BIL to SLC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 708 | 90.74% | 0.71% | 79 min | A |
| Delta Air Lines | 366 | 93.13% | 0.55% | 97 min | A |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SLC to BIL Salt Lake City back to Billings 88.39% on time ACommon questions
Are flights from Billings to Salt Lake City usually delayed?
91.56% of flights on the BIL to SLC route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Billings to Salt Lake City?
Delta Air Lines, at 93.13% on time across 366 flights. The least punctual on the route was SkyWest Airlines at 90.74%.
How often are BIL to SLC flights cancelled?
0.65% of scheduled flights did not operate — about 7 in every thousand. That is in the normal range.
What is the best month to fly Billings to Salt Lake City?
September, when 97.8% of flights arrived on time. The worst was December at 84.4%.
When BIL to SLC flights are late, how late are they?
About 84 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on BIL to SLC during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →