Route on-time record
IDA to DEN: most on-time flights and the best time to fly
Idaho Falls (Idaho Falls Regional Airport) to Denver (Denver International Airport). 1,752 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was SkyWest 5793 at 10:40 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IDA → DEN
Idaho Falls to Denver: 1,752 nonstop flights a year
On time (12 months)
79%
Cancelled
0.9%
avg delay 19 min
Best time to leave
9 AM to noon
88% on time vs 64% 3 to 6 PM
Most reliable airline
SkyWest
79% chance on time
Lowest nonstop fare seen in the next two months: $219 (United 5793 on 2026-10-21). 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 5793 · sold as United Express, Delta Connection, American Eagle or Alaska
10:40 AM → 12:30 PM1h 52m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.6%
- Avg arrival delay
- 15 min
- Arrived on time 88% of the time (360 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 88% on time; 3 to 6 PM: 64%).
Strong track record · 360 flights
Find 10:40 AM flight fares Opens this date on Aviasales#2 · SkyWest 4706 · sold as United Express, Delta Connection, American Eagle or Alaska
6:45 AM → 8:44 AM1h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.3%
- Avg arrival delay
- 13 min
- Arrived on time 87% of the time (337 flights, Jun 2025 to May 2026).
Strong track record · 337 flights
Find 6:45 AM flight fares Opens this date on Aviasales#3 · United 2155
2:30 PM → 4:17 PM1h 48m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 83% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 54 flights
Find United 2155 fares Opens this date on Aviasales#4 · SkyWest 5666 · sold as United Express, Delta Connection, American Eagle or Alaska
4:10 PM → 6:01 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 77% of the time (109 flights, Jun 2025 to May 2026).
- Never cancelled in 109 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 64% on time; 9 AM to noon: 88%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 109 flights
Find 4:10 PM flight fares Opens this date on Aviasales#5 · SkyWest 5551 · sold as United Express, Delta Connection, American Eagle or Alaska
5:20 PM → 7:10 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 70%
- Cancelled
- 0.6%
- Avg arrival delay
- 24 min
- Arrived on time 70% of the time (155 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 64% on time; 9 AM to noon: 88%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 155 flights
Find 5:20 PM flight 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)79%
1,571 flights · 79% on time as flown · 0.8% cancel
- United Airlines79%
154 flights · 82% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
560 flights · avg delay 14 min
- 9 AM to noon88%
366 flights · avg delay 15 min
- Noon to 3 PM78%
364 flights · avg delay 18 min
- 3 to 6 PM64%
408 flights · avg delay 30 min
Best day: Wednesday (84%). Worst: Friday (77%).
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)42%
- Air traffic control and airport volume28%
- Late-arriving aircraft22%
- Severe weather9%
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
IDA to DEN questions
- What time of day is best to fly IDA to DEN?
- 9 AM to noon: 88% of flights arrived on time, against 64% for departures 3 to 6 PM.
- Which airline is most on time from IDA to DEN?
- SkyWest, with a season-adjusted 79% chance of operating and arriving on time over 1,571 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 IDA to DEN?
- July (68% on time); the best was November (87%), 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 IDA
Live status: FAA delays and ground stops