Best Time to Fly ATL to CID: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → The Eastern Iowa
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.6% of Atlanta (ATL) to Cedar Rapids/Iowa City (CID) flights arrived on time (367 scheduled flights). That is 2.0 points below the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (86% on time) and July the worst month (61%).
The cancellation rate was 1.6% (US average 1.8%).
ATL to CID on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 75.6% | 73 min | 1.6% | 367 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to CID
On-time arrival % by scheduled departure hour (local time), 733 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | Limited data | 1 | |
| 9am–10am | Limited data | 2 | |
| 11am–12pm | Limited data | 2 | |
| 7pm–8pm | Limited data | 19 | |
| 8pm–9pm | 78.4% | 1.4% | 280 |
| 9pm–10pm | 73.1% | 1.0% | 393 |
| 10pm–11pm | 77.1% | 0.0% | 36 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL to CID
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 30 | ||
| Summer peak (Jun 15 - Aug 15) | 68.6% | -10.1 pts | 2.4% | 124 |
| All other days | 78.7% | — | 0.9% | 567 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).