Route on-time record
GRR to ORD: most on-time flights and the best time to fly
Grand Rapids (Gerald R. Ford International Airport) to Chicago (Chicago O'Hare International Airport). 4,108 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 2.7% were cancelled. The most reliable flight number was American 337 at 5:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
GRR → ORD
Grand Rapids to Chicago: 4,108 nonstop flights a year
On time (12 months)
68%
Cancelled
2.7%
avg delay 29 min
Best time to leave
Before 9 AM
79% on time vs 49% 6 to 9 PM
Most reliable airline
American
71% 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 · American 337
5:00 AM → 5:11 AM1h 11m nonstop
Local times, typical schedule. Last flown 2026-05-20.
83%
chance on time
- On time (history)
- 95%
- Cancelled
- 11.6%
- Avg arrival delay
- 19 min
- Arrived on time 95% of the time (38 flights, Jun 2025 to May 2026).
- Cancelled 11.6% of the time (5 of 43).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- 85% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 38 flights
Find American 337 fares Opens this date on Aviasales#2 · Republic 3651 · sold as American Eagle, Delta Connection or United Express
6:07 AM → 6:20 AM1h 13m nonstop
Local times, typical schedule. Last flown 2026-05-21. Same departure also flew as Republic 3709; its record covers all of them.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 83% of the time (60 flights, Jun 2025 to May 2026).
- Never cancelled in 60 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- 58% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 60 flights
Find 6:07 AM flight fares Opens this date on Aviasales#3 · American 1391
6:00 AM → 6:20 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 166 min
- Arrived on time 80% of the time (10 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find American 1391 fares Opens this date on Aviasales#4 · Envoy 3574 · sold as American Eagle
6:00 AM → 6:14 AM1h 14m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
- On time (history)
- 82%
- Cancelled
- 5.6%
- Avg arrival delay
- 17 min
- Arrived on time 82% of the time (51 flights, Jun 2025 to May 2026).
- Cancelled 5.6% of the time (3 of 54).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- Short track record (51 flights), so its score leans on the airline's record at this hour.
Limited track record · 51 flights
Find 6:00 AM flight fares Opens this date on Aviasales#5 · American 3184
10:27 AM → 10:48 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-20.
79%
chance on time
- On time (history)
- 84%
- Cancelled
- 3.0%
- Avg arrival delay
- 21 min
- Arrived on time 84% of the time (159 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (5 of 165).
Moderate track record · 159 flights
Find American 3184 fares Opens this date on Aviasales#6 · Envoy 3541 · sold as American Eagle
6:43 AM → 7:09 AM1h 26m nonstop
Local times, typical schedule. Last flown 2026-05-06.
78%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 35 min
- Arrived on time 76% of the time (29 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- Short track record (29 flights), so its score leans on the airline's record at this hour.
Limited track record · 29 flights
Find 6:43 AM flight fares Opens this date on Aviasales#7 · SkyWest 5690 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 6:18 AM1h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5216; its record covers all of them.
77%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.0%
- Avg arrival delay
- 26 min
- Arrived on time 87% of the time (30 flights, Jun 2025 to May 2026).
- Never cancelled in 30 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- Short track record (30 flights), so its score leans on the airline's record at this hour.
Limited track record · 30 flights
Find 6:00 AM flight fares Opens this date on Aviasales#8 · SkyWest 4899 · sold as United Express, Delta Connection, American Eagle or Alaska
5:34 AM → 5:50 AM1h 16m nonstop
Local times, typical schedule. Last flown 2026-05-19.
77%
chance on time
- On time (history)
- 88%
- Cancelled
- 2.4%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (41 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; 6 to 9 PM: 49%).
- Short track record (41 flights), so its score leans on the airline's record at this hour.
Limited track record · 41 flights
Find 5:34 AM flight fares Opens this date on Aviasales#9 · Republic 3649 · sold as American Eagle, Delta Connection or United Express
12:58 PM → 1:15 PM1h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as Republic 3431, 3408; its record covers all of them.
73%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.1%
- Avg arrival delay
- 20 min
- Arrived on time 77% of the time (95 flights, Jun 2025 to May 2026).
Moderate track record · 95 flights
Find 12:58 PM flight fares Opens this date on Aviasales#10 · Republic 3701 · sold as American Eagle, Delta Connection or United Express
9:45 PM → 9:57 PM1h 12m nonstop
Local times, typical schedule. Last flown 2026-04-26.
72%
chance on time
- On time (history)
- 82%
- Cancelled
- 21.4%
- Avg arrival delay
- 83 min
- Arrived on time 82% 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 9:45 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines71%
527 flights · 75% on time as flown · 3.4% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)70%
673 flights · 72% on time as flown · 2.4% cancel
- Envoy Air (sold as American Eagle)67%
953 flights · 69% on time as flown · 3.3% cancel
- United Airlines65%
1,033 flights · 66% on time as flown · 1.4% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)59%
920 flights · 61% on time as flown · 3.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM79%
1,267 flights · avg delay 22 min
- 9 AM to noon74%
776 flights · avg delay 23 min
- Noon to 3 PM66%
729 flights · avg delay 29 min
- 3 to 6 PM58%
716 flights · avg delay 43 min
- 6 to 9 PM49%
600 flights · avg delay 35 min
Best day: Saturday (78%). Worst: Friday (71%).
Smarter routing
Nearby airports that run more on time
LAN → ORD 79% chance on time
Capital Region International Airport to Chicago O'Hare International Airport · 807 flights a year · 48 mi from your airports · yours: 66%
GRR → MDW 77% chance on time
Gerald R. Ford International Airport to Chicago Midway International Airport · 928 flights a year · 15 mi from your airports · yours: 66%
AZO → ORD 77% chance on time
Kalamazoo/Battle Creek International Airport to Chicago O'Hare International Airport · 1,000 flights a year · 45 mi from your airports · yours: 66%
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)30%
- Late-arriving aircraft30%
- Air traffic control and airport volume30%
- Severe weather11%
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
GRR to ORD questions
- What time of day is best to fly GRR to ORD?
- Before 9 AM: 79% of flights arrived on time, against 49% 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 GRR to ORD?
- American, with a season-adjusted 71% chance of operating and arriving on time over 527 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 GRR to ORD?
- January (63% on time); the best was November (80%), 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 GRR
- ORD to GRR (return)
- GRR to DTW 77%
- GRR to ATL 86%
- GRR to DEN 80%
- GRR to MSP 81%
- GRR to DFW 67%
- GRR to CLT 80%
- GRR to LGA 79%
- GRR to MDW 78%
- GRR to EWR 79%
- GRR to DCA 69%
- GRR to LAS 71%
- GRR to BWI 81%
Live status: FAA delays and ground stops