Route on-time record
LAF to ORD: most on-time flights and the best time to fly
West Lafayette (Purdue University Airport) to Chicago (Chicago O'Hare International Airport). 474 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.5% were cancelled. The most reliable flight number was SkyWest 5043 at 6:10 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
LAF → ORD
West Lafayette to Chicago: 474 nonstop flights a year
On time (12 months)
74%
Cancelled
2.5%
avg delay 39 min
Best time to leave
Before 9 AM
79% on time vs 67% noon to 3 PM
Most reliable airline
SkyWest
72% 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 · SkyWest 5043 · sold as United Express, Delta Connection, American Eagle or Alaska
6:10 AM → 6:14 AM1h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 78%
- Cancelled
- 2.1%
- Avg arrival delay
- 37 min
- Arrived on time 78% of the time (277 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 79% on time; Noon to 3 PM: 67%).
Strong track record · 277 flights
Find 6:10 AM flight fares Opens this date on Aviasales#2 · SkyWest 5070 · sold as United Express, Delta Connection, American Eagle or Alaska
2:51 PM → 2:55 PM1h 04m nonstop
Local times, typical schedule. Last flown 2026-05-18.
64%
chance on time
- On time (history)
- 65%
- Cancelled
- 2.9%
- Avg arrival delay
- 47 min
- Arrived on time 65% of the time (133 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 67% on time; Before 9 AM: 79%).
- Lands inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
- 74% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 133 flights
Find 2:51 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)72%
474 flights · 74% on time as flown · 2.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM79%
283 flights · avg delay 37 min
- Noon to 3 PM67%
175 flights · avg delay 43 min
Smarter routing
Nearby airports that run more on time
IND → MDW 76% chance on time
Indianapolis International Airport to Chicago Midway International Airport · 611 flights a year · 74 mi from your airports · yours: 72%
IND → ORD 74% chance on time
Indianapolis International Airport to Chicago O'Hare International Airport · 5,186 flights a year · 59 mi from your airports · yours: 72%
On time by month
All airlines, Jun 2025 to May 2026. One year of data, so a single stormy month can stand out.
What delays this route
- Late-arriving aircraft43%
- Airline (crew, maintenance, boarding)35%
- Air traffic control and airport volume13%
- Severe weather9%
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
LAF to ORD questions
- What time of day is best to fly LAF to ORD?
- Before 9 AM: 79% of flights arrived on time, against 67% for departures noon to 3 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 LAF to ORD?
- SkyWest, with a season-adjusted 72% chance of operating and arriving on time over 474 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 LAF to ORD?
- April (56% on time); the best was October (86%), from one year of data, so one bad storm season can move a month.
- 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 LAF
Live status: FAA delays and ground stops