SLC to HLN flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to Helena Regional Airport · 402 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or HLN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Salt Lake City (SLC) to Helena (HLN) arrived on time 96% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.3% were cancelled, and 1% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8pm did best (97% on time); around 10am did worst (95%).
- Tuesday was the most reliable day to fly (97% on time) and Thursday the least (93%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (81%).
Which airline is most on time from SLC to HLN?
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. | 96% | 0.3% | 2 min | 1.1% | 725 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am95%360 flights
- 8pm97%209 flights
- 9pm96%156 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday96%0.0% cancelled
- Tuesday97%0.0% cancelled
- Wednesday94%0.0% cancelled
- Thursday93%0.0% cancelled
- Friday96%0.0% cancelled
- Saturday96%1.0% cancelled
- Sunday97%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)81%
- Extreme weather12%
- Air traffic control & airport congestion6%
- 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%
SLC to HLN: common questions
- How often are SLC to HLN flights on time?
- 96% 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 Salt Lake City to Helena cancelled?
- 0.3% of scheduled flights were cancelled (2 of 725).
- How long are typical delays?
- Across all flights the average arrival delay was 2 min (early arrivals count as zero). Flights that were late arrived 44 min behind schedule on average, and 1.1% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: HLN to SLC — 95% on time
More flights from Salt Lake City
More flights to Helena
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SLC → HLN, nonstop flights by US airlines that report to the DOT. How we calculate this.