BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SLC→HLN

Salt Lake City, UT (SLC) to Helena, MT (HLN) flight delay odds

96.1% of 725 official scheduled SLC-to-HLN flights arrived on time; 1.7% arrived at least 30 minutes late and 0.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
96.1%arrived on time
1.7%30+ min late
0.3%cancelled
725scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late0.6%all scheduled flights
120+ minutes late0.1%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival-12.5 mincompleted flights

Which departure time was most reliable for SLC to HLN?

Among qualifying SLC-to-HLN departure window results, Evening had the highest on-time rate: 97.1% of 209 flights. Late morning was lowest at 95.3% across 360 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning36095.3%2.2%0.6%
Evening20997.1%0.5%0.0%
Night15696.8%1.9%0.0%

Which weekday was most reliable for SLC to HLN?

Among qualifying SLC-to-HLN weekday results, Tuesday had the highest on-time rate: 97.2% of 106 flights. Thursday was lowest at 95.0% across 101 flights.

DayFlightsOn time30+ minCancelled
Monday10496.2%2.9%0.0%
Tuesday10697.2%1.9%0.0%
Wednesday10296.1%1.0%0.0%
Thursday10195.0%1.0%0.0%
Friday10497.1%2.9%0.0%
Saturday10495.2%1.9%1.0%
Sunday10496.2%0.0%1.0%

Which airline was most reliable for SLC to HLN?

Only SkyWest Airlines met the SLC-to-HLN airline threshold: 96.1% of 725 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines72596.1%1.7%0.3%

Which month was most reliable for SLC to HLN?

Among qualifying SLC-to-HLN month results, December 2025 had the highest on-time rate: 100.0% of 59 flights. February 2026 was lowest at 92.9% across 56 flights.

MonthFlightsOn time30+ minCancelled
July 20256296.8%3.2%0.0%
August 20256298.4%1.6%0.0%
September 20256098.3%1.7%0.0%
October 20256295.2%0.0%0.0%
November 20255993.2%3.4%3.4%
December 202559100.0%0.0%0.0%
January 20266195.1%1.6%0.0%
February 20265692.9%1.8%0.0%
March 20266296.8%1.6%0.0%
April 20266096.7%0.0%0.0%
May 20266296.8%0.0%0.0%
June 20266093.3%5.0%0.0%

What drove SLC to HLN delay minutes?

Airline was the largest recorded SLC-to-HLN delay category, accounting for 76.2% of 940 BTS-attributed delay minutes during July 2025–June 2026.

Airline76.2%
Late aircraft0.0%
National airspace8.1%
Weather15.7%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.