Route on-time record

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

Lexington (Blue Grass Airport) to Chicago (Chicago O'Hare International Airport). 1,787 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 2.6% were cancelled. The most reliable flight number was SkyWest 5633 at 7:00 AM.

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

LEX → ORD

Lexington to Chicago: 1,787 nonstop flights a year

On time (12 months)

71%

Cancelled

2.6%

avg delay 28 min

Best time to leave

Before 9 AM

85% on time vs 47% 6 to 9 PM

Most reliable airline

Envoy

73% chance on time

Check LEX to ORD 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 · SkyWest 5633 · sold as United Express, Delta Connection, American Eagle or Alaska
7:00 AM → 7:49 AM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as SkyWest 6188; its record covers all of them.
84%
chance on time
On time (history)
88%
Cancelled
2.7%
Avg arrival delay
15 min
- Arrived on time 88% of the time (248 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 47%).
Strong track record · 248 flights
Find 7:00 AM flight fares Opens this date on Aviasales
#2 · Envoy 4276 · sold as American Eagle
6:40 AM → 7:23 AM1h 43m nonstop
Local times, typical schedule. Last flown 2026-04-06.
82%
chance on time
On time (history)
83%
Cancelled
1.5%
Avg arrival delay
8 min
- Arrived on time 83% of the time (65 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 47%).
Moderate track record · 65 flights
Find 6:40 AM flight fares Opens this date on Aviasales
#3 · SkyWest 4976 · sold as United Express, Delta Connection, American Eagle or Alaska
5:19 AM → 5:55 AM1h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
On time (history)
85%
Cancelled
0.9%
Avg arrival delay
15 min
- Arrived on time 85% of the time (105 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 47%).
Moderate track record · 105 flights
Find 5:19 AM flight fares Opens this date on Aviasales
#4 · Envoy 3689 · sold as American Eagle
10:27 AM → 11:02 AM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
79%
chance on time
On time (history)
81%
Cancelled
0.0%
Avg arrival delay
20 min
- Arrived on time 81% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Short track record (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find 10:27 AM flight fares Opens this date on Aviasales
#5 · SkyWest 6033 · sold as United Express, Delta Connection, American Eagle or Alaska
5:30 AM → 6:19 AM1h 49m nonstop
Local times, typical schedule. Last flown 2026-04-28.
75%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 47%).
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find 5:30 AM flight fares Opens this date on Aviasales
#6 · PSA 5571 · sold as American Eagle
1:14 PM → 1:59 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-05-06.
73%
chance on time
On time (history)
81%
Cancelled
0.0%
Avg arrival delay
17 min
- Arrived on time 81% of the time (21 flights, Jun 2025 to May 2026).
- Short track record (21 flights), so its score leans on the route's record at this hour.
Limited track record · 21 flights
Find 1:14 PM flight fares Opens this date on Aviasales
#7 · SkyWest 6244 · sold as United Express, Delta Connection, American Eagle or Alaska
11:12 AM → 11:58 AM1h 46m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
On time (history)
82%
Cancelled
0.0%
Avg arrival delay
24 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- 87% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 11:12 AM flight fares Opens this date on Aviasales
#8 · Envoy 4268 · sold as American Eagle
11:01 AM → 11:41 AM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-20.
69%
chance on time
On time (history)
70%
Cancelled
1.1%
Avg arrival delay
39 min
- Arrived on time 70% of the time (90 flights, Jun 2025 to May 2026).
- 71% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 90 flights
Find 11:01 AM flight fares Opens this date on Aviasales
#9 · SkyWest 6298 · sold as United Express, Delta Connection, American Eagle or Alaska
4:27 PM → 5:18 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-05-20.
59%
chance on time
On time (history)
62%
Cancelled
4.5%
Avg arrival delay
38 min
- Arrived on time 62% of the time (42 flights, Jun 2025 to May 2026).
- Cancelled 4.5% of the time (2 of 44).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- Short track record (42 flights), so its score leans on the airline's record at this hour.
Limited track record · 42 flights
Find 4:27 PM flight fares Opens this date on Aviasales
#10 · SkyWest 6245 · sold as United Express, Delta Connection, American Eagle or Alaska
6:52 PM → 7:45 PM1h 53m nonstop
Local times, typical schedule. Last flown 2026-05-31.
58%
chance on time
On time (history)
82%
Cancelled
0.0%
Avg arrival delay
10 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 47% on time; Before 9 AM: 85%).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
- 96% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 11 flights
Find 6:52 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)73%
300 flights · 76% on time as flown · 1.8% cancel
SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)68%
1,464 flights · 70% on time as flown · 2.9% cancel

On time by departure time

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

Before 9 AM85%
620 flights · avg delay 18 min
9 AM to noon75%
348 flights · avg delay 26 min
Noon to 3 PM74%
212 flights · avg delay 19 min
3 to 6 PM59%
280 flights · avg delay 37 min
6 to 9 PM47%
325 flights · avg delay 46 min

Best day: Monday (80%). Worst: Sunday (74%).

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)40%
Late-arriving aircraft29%
Air traffic control and airport volume22%
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

LEX to ORD questions

What time of day is best to fly LEX to ORD?: Before 9 AM: 85% of flights arrived on time, against 47% 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 LEX to ORD?: Envoy, with a season-adjusted 73% chance of operating and arriving on time over 300 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 LEX to ORD?: July (67% on time); the best was April (85%), 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.

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