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.
SPI → ORD
Springfield to Chicago: 682 nonstop flights a year
On time (12 months)
80%
Cancelled
3.7%
avg delay 19 min
Best time to leave
Before 9 AM
88% on time vs 62% 6 to 9 PM
Most reliable airline
Envoy
81% 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 4332 · sold as American Eagle
5:00 AM → 6:10 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
- On time (history)
- 89%
- Cancelled
- 2.4%
- Avg arrival delay
- 14 min
- Arrived on time 89% of the time (122 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 6 to 9 PM: 62%).
Moderate track record · 122 flights
Find 5:00 AM flight fares Opens this date on Aviasales#2 · Envoy 4328 · sold as American Eagle
5:45 AM → 7:00 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 87% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 6 to 9 PM: 62%).
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find 5:45 AM flight fares Opens this date on Aviasales#3 · Envoy 4330 · sold as American Eagle
2:49 PM → 4:07 PM1h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 2.9%
- Avg arrival delay
- 24 min
- Arrived on time 78% of the time (68 flights, Jun 2025 to May 2026).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 68 flights
Find 2:49 PM flight fares Opens this date on Aviasales#4 · Envoy 4313 · sold as American Eagle
6:37 PM → 7:53 PM1h 16m nonstop
Local times, typical schedule. Last flown 2026-04-06.
71%
chance on time
- On time (history)
- 75%
- Cancelled
- 6.4%
- Avg arrival delay
- 20 min
- Arrived on time 75% of the time (88 flights, Jun 2025 to May 2026).
- Cancelled 6.4% of the time (6 of 94).
- Leaves in this route's least on-time window (6 to 9 PM: 62% on time; Before 9 AM: 88%).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 88 flights
Find 6:37 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)81%
579 flights · 84% on time as flown · 3.1% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)64%
103 flights · 58% on time as flown · 5.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
237 flights · avg delay 12 min
- Noon to 3 PM87%
211 flights · avg delay 13 min
- 3 to 6 PM74%
59 flights · avg delay 15 min
- 6 to 9 PM62%
169 flights · avg delay 40 min
Best day: Wednesday (86%). Worst: Friday (78%).
Smarter routing
Nearby airports that run more on time
BMI → ORD 80% chance on time
Central Illinois Regional Airport at Bloomington-Normal to Chicago O'Hare International Airport · 880 flights a year · 59 mi from your airports · yours: 77%
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