ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
ORD → SPI
Chicago to Springfield: 683 nonstop flights a year
On time (12 months)
74%
Cancelled
3.2%
avg delay 21 min
Best time to leave
9 AM to noon
95% on time vs 58% 3 to 6 PM
Most reliable airline
Envoy
75% 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 · Envoy 4330 · sold as American Eagle
1:09 PM → 2:19 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.4%
- Avg arrival delay
- 13 min
- Arrived on time 88% of the time (69 flights, Jun 2025 to May 2026).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 69 flights
Find 1:09 PM flight fares Opens this date on Aviasales#2 · Envoy 4313 · sold as American Eagle
4:59 PM → 6:03 PM1h 04m nonstop
Local times, typical schedule. Last flown 2026-04-06.
72%
chance on time
- On time (history)
- 74%
- Cancelled
- 2.1%
- Avg arrival delay
- 19 min
- Arrived on time 74% of the time (94 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 58% on time; 9 AM to noon: 95%).
- Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 94 flights
Find 4:59 PM flight fares Opens this date on Aviasales#3 · Envoy 4331 · sold as American Eagle
10:29 PM → 11:32 PM1h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31.
66%
chance on time
- On time (history)
- 67%
- Cancelled
- 5.1%
- Avg arrival delay
- 24 min
- Arrived on time 67% of the time (168 flights, Jun 2025 to May 2026).
- Cancelled 5.1% of the time (9 of 177).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
Moderate track record · 168 flights
Find 10:29 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)75%
580 flights · 78% on time as flown · 3.0% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)57%
103 flights · 51% on time as flown · 3.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon95%
112 flights · avg delay 4 min
- Noon to 3 PM84%
160 flights · avg delay 12 min
- 3 to 6 PM58%
168 flights · avg delay 40 min
- After 9 PM68%
224 flights · avg delay 24 min
Best day: Wednesday (80%). Worst: Thursday (70%).
Smarter routing
Nearby airports that run more on time
ORD → BMI 75% chance on time
Chicago O'Hare International Airport to Central Illinois Regional Airport at Bloomington-Normal · 880 flights a year · 59 mi from your airports · yours: 72%
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