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Route on-time record

ORD to LAF: most on-time flights and the best time to fly

Chicago (Chicago O'Hare International Airport) to West Lafayette (Purdue University Airport). 475 nonstop flights in Jun 2025 to May 2026, 68% arrived within 15 minutes and 3.8% were cancelled. The most reliable flight number was SkyWest 5016 at 12:06 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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ORD → LAF

Chicago to West Lafayette: 475 nonstop flights a year

On time (12 months)

68%

Cancelled

3.8%

avg delay 38 min

Best time to leave

Noon to 3 PM

72% on time vs 66% after 9 PM

Most reliable airline

SkyWest

65% chance on time

Check ORD to LAF fares

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. #1 · SkyWest 5016 · sold as United Express, Delta Connection, American Eagle or Alaska

    12:06 PM → 2:06 PM1h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-18.

    70%

    chance on time

    On time (history)
    74%
    Cancelled
    3.1%
    Avg arrival delay
    19 min
    • Arrived on time 74% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (1 of 32).
    • Leaves in this route's most on-time window (Noon to 3 PM: 72% on time; After 9 PM: 66%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Limited track record · 31 flights

    Find 12:06 PM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 5048 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:40 PM → 11:42 PM1h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    64%

    chance on time

    On time (history)
    66%
    Cancelled
    3.2%
    Avg arrival delay
    39 min
    • Arrived on time 66% of the time (274 flights, Jun 2025 to May 2026).
    • Cancelled 3.2% of the time (9 of 285).
    • Leaves in this route's least on-time window (After 9 PM: 66% on time; Noon to 3 PM: 72%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).

    Strong track record · 274 flights

    Find 9:40 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)65%

    475 flights · 68% on time as flown · 3.8% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Noon to 3 PM72%

    176 flights · avg delay 29 min

  • After 9 PM66%

    275 flights · avg delay 43 min

Smarter routing

Nearby airports that run more on time

  • MDW → IND 84% chance on time

    Chicago Midway International Airport to Indianapolis International Airport · 610 flights a year · 74 mi from your airports · yours: 65%

    Rank flightsFares

  • ORD → IND 71% chance on time

    Chicago O'Hare International Airport to Indianapolis International Airport · 5,190 flights a year · 59 mi from your airports · yours: 65%

    Rank flightsFares

On time by month

All airlines, Jun 2025 to May 2026. One year of data, so a single stormy month can stand out.

J
67
F
77
M
74
A
46
M
67
J
-
J
-
A
73
S
72
O
61
N
80
D
59

What delays this route

  • Airline (crew, maintenance, boarding)43%
  • Late-arriving aircraft41%
  • Air traffic control and airport volume15%
  • Severe weather2%

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

Finding the most reliable connections from ORD to LAF…

ORD to LAF questions

What time of day is best to fly ORD to LAF?
Noon to 3 PM: 72% of flights arrived on time, against 66% for departures after 9 PM.
Which airline is most on time from ORD to LAF?
SkyWest, with a season-adjusted 65% chance of operating and arriving on time over 475 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 ORD to LAF?
April (46% on time); the best was November (80%), 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.

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Live status: FAA delays and ground stops