Route on-time record
IND to ORD: most on-time flights and the best time to fly
Indianapolis (Indianapolis International Airport) to Chicago (Chicago O'Hare International Airport). 5,186 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 2.8% were cancelled. The most reliable flight number was Republic 3479 at 6:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IND → ORD
Indianapolis to Chicago: 5,186 nonstop flights a year
On time (12 months)
77%
Cancelled
2.8%
avg delay 21 min
Best time to leave
Before 9 AM
85% on time vs 55% 6 to 9 PM
Most reliable airline
Republic
81% chance on time
Lowest nonstop fare seen in the next two months: $102 (American 3053 on 2026-10-25). 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 · Republic 3479 · sold as American Eagle, Delta Connection or United Express
6:00 AM → 6:20 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 4460; its record covers all of them.
93%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.7%
- Avg arrival delay
- 4 min
- Arrived on time 94% of the time (399 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 55%).
Strong track record · 399 flights
Find 6:00 AM flight fares Opens this date on Aviasales#2 · Republic 3448 · sold as American Eagle, Delta Connection or United Express
11:30 AM → 11:52 AM1h 22m nonstop
Local times, typical schedule. Last flown 2026-05-20.
90%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 95% of the time (22 flights, Jun 2025 to May 2026).
- Short track record (22 flights), so its score leans on the airline's record at this hour.
Limited track record · 22 flights
Find 11:30 AM flight fares Opens this date on Aviasales#3 · Republic 4362 · sold as American Eagle, Delta Connection or United Express
5:10 AM → 5:33 AM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 55%).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 5:10 AM flight fares Opens this date on Aviasales#4 · Republic 3677 · sold as American Eagle, Delta Connection or United Express
11:04 AM → 11:25 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-27. Same departure also flew as Republic 3523; its record covers all of them.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.5%
- Avg arrival delay
- 10 min
- Arrived on time 88% of the time (322 flights, Jun 2025 to May 2026).
Strong track record · 322 flights
Find 11:04 AM flight fares Opens this date on Aviasales#5 · Republic 3565 · sold as American Eagle, Delta Connection or United Express
9:28 AM → 9:50 AM1h 22m nonstop
Local times, typical schedule. Last flown 2026-05-20.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.8%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (236 flights, Jun 2025 to May 2026).
Strong track record · 236 flights
Find 9:28 AM flight fares Opens this date on Aviasales#6 · Republic 4597 · sold as American Eagle, Delta Connection or United Express
6:46 AM → 7:15 AM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 83% of the time (71 flights, Jun 2025 to May 2026).
- Never cancelled in 71 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 55%).
Moderate track record · 71 flights
Find 6:46 AM flight fares Opens this date on Aviasales#7 · Envoy 3360 · sold as American Eagle
5:10 AM → 5:24 AM1h 14m nonstop
Local times, typical schedule. Last flown 2026-04-06.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 3.4%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (28 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 55%).
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find 5:10 AM flight fares Opens this date on Aviasales#8 · Republic 4443 · sold as American Eagle, Delta Connection or United Express
10:27 AM → 10:50 AM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 91% 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 10:27 AM flight fares Opens this date on Aviasales#9 · Republic 3484 · sold as American Eagle, Delta Connection or United Express
12:47 PM → 1:08 PM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-20.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.7%
- Avg arrival delay
- 13 min
- Arrived on time 83% of the time (265 flights, Jun 2025 to May 2026).
Strong track record · 265 flights
Find 12:47 PM flight fares Opens this date on Aviasales#10 · Republic 4402 · sold as American Eagle, Delta Connection or United Express
12:19 PM → 12:39 PM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 79% of the time (14 flights, Jun 2025 to May 2026).
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find 12:19 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)81%
2,714 flights · 83% on time as flown · 1.8% cancel
- Envoy Air (sold as American Eagle)77%
593 flights · 78% on time as flown · 1.8% cancel
- United Airlines66%
749 flights · 68% on time as flown · 2.6% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)64%
649 flights · 67% on time as flown · 5.4% cancel
- American Airlines63%
481 flights · 67% on time as flown · 5.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
1,392 flights · avg delay 11 min
- 9 AM to noon84%
1,198 flights · avg delay 13 min
- Noon to 3 PM77%
1,065 flights · avg delay 20 min
- 3 to 6 PM68%
923 flights · avg delay 32 min
- 6 to 9 PM55%
586 flights · avg delay 45 min
Best day: Wednesday (85%). Worst: Friday (79%).
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
- Air traffic control and airport volume37%
- Late-arriving aircraft28%
- Airline (crew, maintenance, boarding)22%
- Severe weather13%
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
IND to ORD questions
- What time of day is best to fly IND to ORD?
- Before 9 AM: 85% of flights arrived on time, against 55% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from IND to ORD?
- Republic, with a season-adjusted 81% chance of operating and arriving on time over 2,714 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 IND to ORD?
- July (74% on time); the best was October (86%), 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 IND
- ORD to IND (return)
- IND to ATL 88%
- IND to DEN 77%
- IND to LGA 82%
- IND to MCO 80%
- IND to EWR 84%
- IND to DFW 79%
- IND to DCA 74%
- IND to BOS 77%
- IND to CLT 81%
- IND to PHX 79%
- IND to PHL 79%
- IND to LAS 79%
Live status: FAA delays and ground stops