Route on-time record
BOI to SLC: most on-time flights and the best time to fly
Boise (Boise Air Terminal/Gowen Field) to Salt Lake City (Salt Lake City International Airport). 1,740 nonstop flights in Jun 2025 to May 2026, 92% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was SkyWest 3607 at 8:45 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
BOI → SLC
Boise to Salt Lake City: 1,740 nonstop flights a year
On time (12 months)
92%
Cancelled
0.9%
avg delay 7 min
Best time to leave
3 to 6 PM
95% on time vs 88% noon to 3 PM
Most reliable airline
SkyWest
95% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 3607 · sold as United Express, Delta Connection, American Eagle or Alaska
8:45 AM → 10:11 AM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
98%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (37 flights, Jun 2025 to May 2026).
- Never cancelled in 37 scheduled flights.
- Short track record (37 flights), so its score leans on the airline's record at this hour.
Limited track record · 37 flights
Find 8:45 AM flight fares Opens this date on Aviasales#2 · Delta 1106
8:30 AM → 9:48 AM1h 18m nonstop
Local times, typical schedule. Last flown 2026-05-06.
94%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 96% of the time (24 flights, Jun 2025 to May 2026).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Delta 1106 fares Opens this date on Aviasales#3 · SkyWest 3504 · sold as United Express, Delta Connection, American Eagle or Alaska
12:45 PM → 2:06 PM1h 21m nonstop
Local times, typical schedule. Last flown 2026-04-12.
94%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 94% of the time (36 flights, Jun 2025 to May 2026).
- Never cancelled in 36 scheduled flights.
- Leaves in this route's least on-time window (Noon to 3 PM: 88% on time; 3 to 6 PM: 95%).
- Short track record (36 flights), so its score leans on the airline's record at this hour.
Limited track record · 36 flights
Find 12:45 PM flight fares Opens this date on Aviasales#4 · SkyWest 3594 · sold as United Express, Delta Connection, American Eagle or Alaska
6:16 PM → 7:36 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as SkyWest 3507; its record covers all of them.
93%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 93% of the time (57 flights, Jun 2025 to May 2026).
- Never cancelled in 57 scheduled flights.
- Short track record (57 flights), so its score leans on the airline's record at this hour.
Limited track record · 57 flights
Find 6:16 PM flight fares Opens this date on Aviasales#5 · Delta 1710
8:00 AM → 9:14 AM1h 14m nonstop
Local times, typical schedule. Last flown 2026-04-12.
92%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 91% of the time (35 flights, Jun 2025 to May 2026).
- Never cancelled in 35 scheduled flights.
- Short track record (35 flights), so its score leans on the airline's record at this hour.
Limited track record · 35 flights
Find Delta 1710 fares Opens this date on Aviasales#6 · Delta 1744
10:45 AM → 11:58 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 93%
- Cancelled
- 1.5%
- Avg arrival delay
- 7 min
- Arrived on time 93% of the time (257 flights, Jun 2025 to May 2026).
Strong track record · 257 flights
Find Delta 1744 fares Opens this date on Aviasales#7 · Delta 2173
6:00 AM → 7:10 AM1h 13m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.1%
- Avg arrival delay
- 11 min
- Arrived on time 91% of the time (358 flights, Jun 2025 to May 2026).
Strong track record · 358 flights
Find Delta 2173 fares Opens this date on Aviasales#8 · Delta 2095
12:52 PM → 2:05 PM1h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.2%
- Avg arrival delay
- 11 min
- Arrived on time 88% of the time (317 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 88% on time; 3 to 6 PM: 95%).
Strong track record · 317 flights
Find Delta 2095 fares Opens this date on Aviasales#9 · Delta 2920
6:41 PM → 8:00 PM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (25 flights, Jun 2025 to May 2026).
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Delta 2920 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)95%
506 flights · 95% on time as flown · 0.3% cancel
- Delta Air Lines90%
1,234 flights · 91% on time as flown · 1.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
649 flights · avg delay 7 min
- 9 AM to noon93%
359 flights · avg delay 7 min
- Noon to 3 PM88%
362 flights · avg delay 10 min
- 3 to 6 PM95%
105 flights · avg delay 4 min
- 6 to 9 PM91%
265 flights · avg delay 5 min
Best day: Tuesday (92%). Worst: Monday (87%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)57%
- Late-arriving aircraft29%
- Air traffic control and airport volume10%
- Severe weather4%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
BOI to SLC questions
- What time of day is best to fly BOI to SLC?
- 3 to 6 PM: 95% of flights arrived on time, against 88% for departures noon to 3 PM.
- Which airline is most on time from BOI to SLC?
- SkyWest, with a season-adjusted 95% chance of operating and arriving on time over 506 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on BOI to SLC?
- January (80% on time); the best was November (93%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from BOI
- SLC to BOI (return)
- BOI to SEA 86%
- BOI to DEN 81%
- BOI to PHX 84%
- BOI to SFO 75%
- BOI to LAS 82%
- BOI to LAX 93%
- BOI to PDX 91%
- BOI to ORD 76%
- BOI to SAN 83%
- BOI to SMF 84%
- BOI to DFW 82%
- BOI to MSP 88%
Live status: FAA delays and ground stops