Route on-time record
CID to DEN: most on-time flights and the best time to fly
Cedar Rapids (The Eastern Iowa Airport) to Denver (Denver International Airport). 1,079 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was United 1500 at 9:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CID → DEN
Cedar Rapids to Denver: 1,079 nonstop flights a year
On time (12 months)
76%
Cancelled
1.3%
avg delay 24 min
Best time to leave
9 AM to noon
86% on time vs 67% 6 to 9 PM
Most reliable airline
United
78% chance on time
Lowest nonstop fare seen in the next two months: $307 (United 514 on 2026-10-24). 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 · United 1500
9:15 AM → 10:32 AM2h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 83%
- Cancelled
- 2.1%
- Avg arrival delay
- 20 min
- Arrived on time 83% of the time (332 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (9 AM to noon: 86% on time; 6 to 9 PM: 67%).
Strong track record · 332 flights
Find United 1500 fares Opens this date on Aviasales#2 · SkyWest 4716 · sold as United Express, Delta Connection, American Eagle or Alaska
5:30 AM → 6:54 AM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 5:30 AM flight fares Opens this date on Aviasales#3 · United 514
4:46 PM → 6:03 PM2h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 1.0%
- Avg arrival delay
- 23 min
- Arrived on time 77% of the time (288 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 288 flights
Find United 514 fares Opens this date on Aviasales#4 · Frontier 4385
1:51 PM → 3:07 PM2h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 75%
- Cancelled
- 1.2%
- Avg arrival delay
- 19 min
- Arrived on time 75% of the time (166 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 55% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 166 flights
Find Frontier 4385 fares Opens this date on Aviasales#5 · SkyWest 5692 · sold as United Express, Delta Connection, American Eagle or Alaska
5:58 PM → 7:25 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
66%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.6%
- Avg arrival delay
- 39 min
- Arrived on time 64% of the time (163 flights, Jun 2025 to May 2026).
- 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 · 163 flights
Find 5:58 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines78%
727 flights · 79% on time as flown · 1.5% cancel
- Frontier Airlines74%
169 flights · 74% on time as flown · 1.2% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)69%
183 flights · 67% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM82%
288 flights · avg delay 23 min
- 9 AM to noon86%
88 flights · avg delay 14 min
- 3 to 6 PM76%
394 flights · avg delay 22 min
- 6 to 9 PM67%
283 flights · avg delay 32 min
Best day: Sunday (82%). Worst: Thursday (76%).
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)38%
- Air traffic control and airport volume28%
- Late-arriving aircraft24%
- 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
CID to DEN questions
- What time of day is best to fly CID to DEN?
- 9 AM to noon: 86% of flights arrived on time, against 67% for departures 6 to 9 PM.
- Which airline is most on time from CID to DEN?
- United, with a season-adjusted 78% chance of operating and arriving on time over 727 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 CID to DEN?
- June (67% on time); the best was September (88%), 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 CID
- DEN to CID (return)
- CID to ORD 72%
- CID to DFW 77%
- CID to PHX 82%
- CID to CLT 84%
- CID to MSP 78%
- CID to ATL 89%
- CID to DCA 76%
Live status: FAA delays and ground stops