Route on-time record
MKE to ORD: most on-time flights and the best time to fly
Milwaukee (General Mitchell International Airport) to Chicago (Chicago O'Hare International Airport). 5,166 nonstop flights in Jun 2025 to May 2026, 67% arrived within 15 minutes and 4.2% were cancelled. The most reliable flight number was SkyWest 5799 at 5:10 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MKE → ORD
Milwaukee to Chicago: 5,166 nonstop flights a year
On time (12 months)
67%
Cancelled
4.2%
avg delay 33 min
Best time to leave
Before 9 AM
75% on time vs 52% 3 to 6 PM
Most reliable airline
Republic
66% chance on time
Lowest nonstop fare seen in the next two months: $112 (American 6251 on 2026-11-07). 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 5799 · sold as United Express, Delta Connection, American Eagle or Alaska
5:10 AM → 6:19 AM1h 06m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as SkyWest 4973; its record covers all of them.
83%
chance on time
- On time (history)
- 86%
- Cancelled
- 2.3%
- Avg arrival delay
- 13 min
- Arrived on time 86% of the time (385 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
Strong track record · 385 flights
Find 5:10 AM flight fares Opens this date on Aviasales#2 · SkyWest 5847 · sold as United Express, Delta Connection, American Eagle or Alaska
5:50 AM → 6:53 AM1h 03m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 93% of the time (14 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find 5:50 AM flight fares Opens this date on Aviasales#3 · SkyWest 5896 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 7:03 AM1h 03m nonstop
Local times, typical schedule. Last flown 2026-03-28.
78%
chance on time
- On time (history)
- 90%
- Cancelled
- 6.7%
- Avg arrival delay
- 18 min
- Arrived on time 90% of the time (42 flights, Jun 2025 to May 2026).
- Cancelled 6.7% of the time (3 of 45).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
- Short track record (42 flights), so its score leans on the airline's record at this hour.
Limited track record · 42 flights
Find 6:00 AM flight fares Opens this date on Aviasales#4 · SkyWest 4803 · sold as United Express, Delta Connection, American Eagle or Alaska
6:50 AM → 7:59 AM1h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 79%
- Cancelled
- 2.5%
- Avg arrival delay
- 31 min
- Arrived on time 79% of the time (354 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
Strong track record · 354 flights
Find 6:50 AM flight fares Opens this date on Aviasales#5 · SkyWest 4914 · sold as United Express, Delta Connection, American Eagle or Alaska
6:08 AM → 7:27 AM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 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: 75% on time; 3 to 6 PM: 52%).
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find 6:08 AM flight fares Opens this date on Aviasales#6 · SkyWest 4953 · sold as United Express, Delta Connection, American Eagle or Alaska
7:01 AM → 8:20 AM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-20.
71%
chance on time
- On time (history)
- 78%
- Cancelled
- 5.7%
- Avg arrival delay
- 14 min
- Arrived on time 78% of the time (50 flights, Jun 2025 to May 2026).
- Cancelled 5.7% of the time (3 of 53).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
- Short track record (50 flights), so its score leans on the airline's record at this hour.
Limited track record · 50 flights
Find 7:01 AM flight fares Opens this date on Aviasales#7 · SkyWest 6213 · sold as United Express, Delta Connection, American Eagle or Alaska
7:30 AM → 8:49 AM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 34 min
- Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 7:30 AM flight fares Opens this date on Aviasales#8 · SkyWest 6358 · sold as United Express, Delta Connection, American Eagle or Alaska
5:00 AM → 6:14 AM1h 14m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5619, 6370; its record covers all of them.
70%
chance on time
- On time (history)
- 71%
- Cancelled
- 2.8%
- Avg arrival delay
- 31 min
- Arrived on time 71% of the time (245 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 75% on time; 3 to 6 PM: 52%).
Strong track record · 245 flights
Find 5:00 AM flight fares Opens this date on Aviasales#9 · SkyWest 6204 · sold as United Express, Delta Connection, American Eagle or Alaska
11:13 AM → 12:25 PM1h 12m nonstop
Local times, typical schedule. Last flown 2026-05-20.
70%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 74% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find 11:13 AM flight fares Opens this date on Aviasales#10 · SkyWest 4934 · sold as United Express, Delta Connection, American Eagle or Alaska
4:26 PM → 5:48 PM1h 22m nonstop
Local times, typical schedule. Last flown 2026-05-20.
69%
chance on time
- On time (history)
- 81%
- Cancelled
- 4.5%
- Avg arrival delay
- 15 min
- Arrived on time 81% of the time (42 flights, Jun 2025 to May 2026).
- Cancelled 4.5% of the time (2 of 44).
- Leaves in this route's least on-time window (3 to 6 PM: 52% on time; Before 9 AM: 75%).
- Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 42 flights
Find 4:26 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)66%
114 flights · 72% on time as flown · 5.8% cancel
- Envoy Air (sold as American Eagle)66%
130 flights · 70% on time as flown · 5.1% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)64%
4,895 flights · 66% on time as flown · 4.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM75%
2,226 flights · avg delay 26 min
- 9 AM to noon70%
803 flights · avg delay 31 min
- Noon to 3 PM62%
931 flights · avg delay 32 min
- 3 to 6 PM52%
891 flights · avg delay 48 min
- 6 to 9 PM53%
311 flights · avg delay 39 min
Best day: Wednesday (76%). Worst: Friday (68%).
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)46%
- Late-arriving aircraft23%
- Air traffic control and airport volume20%
- 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
MKE to ORD questions
- What time of day is best to fly MKE to ORD?
- Before 9 AM: 75% of flights arrived on time, against 52% for departures 3 to 6 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 MKE to ORD?
- Republic, with a season-adjusted 66% chance of operating and arriving on time over 114 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 MKE to ORD?
- July (68% on time); the best was February (79%), 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 MKE
- ORD to MKE (return)
- MKE to DEN 78%
- MKE to ATL 89%
- MKE to DTW 81%
- MKE to PHX 79%
- MKE to MSP 82%
- MKE to MCO 76%
- MKE to DCA 75%
- MKE to LAS 82%
- MKE to DFW 74%
- MKE to BNA 82%
- MKE to CLT 79%
- MKE to BWI 85%
Live status: FAA delays and ground stops