HLN to SLC flight delays & on-time performance
Nonstop flights from Helena Regional Airport to Salt Lake City International Airport · 402 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at HLN or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Helena (HLN) to Salt Lake City (SLC) arrived on time 95% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.3% were cancelled, and 2% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 5am did best (97% on time); around 12pm did worst (76%).
- Tuesday was the most reliable day to fly (98% on time) and Friday the least (92%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (85%).
Which airline is most on time from HLN to SLC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 95% | 0.3% | 4 min | 1.8% | 725 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am97%358 flights
- 12pm76%25 flights
- 1pm95%335 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday93%0.0% cancelled
- Tuesday98%0.0% cancelled
- Wednesday96%0.0% cancelled
- Thursday96%0.0% cancelled
- Friday92%0.0% cancelled
- Saturday96%1.0% cancelled
- Sunday96%1.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)85%
- Extreme weather12%
- Air traffic control & airport congestion3%
- Late-arriving aircraft0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Extreme weather0%
- Security0%
HLN to SLC: common questions
- How often are HLN to SLC flights on time?
- 95% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Helena to Salt Lake City cancelled?
- 0.3% of scheduled flights were cancelled (2 of 725).
- How long are typical delays?
- Across all flights the average arrival delay was 4 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 1.8% of flights were an hour or more late.
- How long is taxi time at HLN?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: HLN → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.