Route on-time record
CLT to MDW: most on-time flights and the best time to fly
Charlotte (Charlotte Douglas International Airport) to Chicago (Chicago Midway International Airport). 718 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.8% were cancelled. The most reliable flight number was Southwest 2667 at 7:30 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
CLT → MDW
Charlotte to Chicago: 718 nonstop flights a year
On time (12 months)
76%
Cancelled
1.8%
avg delay 15 min
Best time to leave
Before 9 AM
89% on time vs 61% 6 to 9 PM
Most reliable airline
Southwest
74% chance on time
Lowest nonstop fare seen in the next two months: $284 (Southwest 1226 on 2026-10-22). 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 · Southwest 2667
7:30 AM → 8:45 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 6 min
- Arrived on time 89% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 61%).
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
Limited track record · 55 flights
Find Southwest 2667 fares Opens this date on Aviasales#2 · Southwest 1901
8:00 AM → 9:05 AM2h 05m nonstop
Local times, typical schedule. Last flown 2026-04-06.
79%
chance on time
- On time (history)
- 84%
- Cancelled
- 3.0%
- Avg arrival delay
- 11 min
- Arrived on time 84% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 61%).
- Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 1901 fares Opens this date on Aviasales#3 · Southwest 3591
7:00 PM → 8:05 PM2h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 72% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 61% on time; Before 9 AM: 89%).
- Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 54 flights
Find Southwest 3591 fares Opens this date on Aviasales#4 · Southwest 2382
7:20 PM → 8:30 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
61%
chance on time
- On time (history)
- 52%
- Cancelled
- 3.6%
- Avg arrival delay
- 26 min
- Arrived on time 52% of the time (25 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 61% on time; Before 9 AM: 89%).
- Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.
- 61% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 25 flights
Find Southwest 2382 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines74%
718 flights · 76% on time as flown · 1.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
314 flights · avg delay 7 min
- Noon to 3 PM62%
52 flights · avg delay 24 min
- 3 to 6 PM78%
97 flights · avg delay 10 min
- 6 to 9 PM61%
252 flights · avg delay 27 min
Best day: Tuesday (80%). Worst: Sunday (67%).
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
- Late-arriving aircraft47%
- Airline (crew, maintenance, boarding)37%
- Air traffic control and airport volume12%
- Severe weather4%
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
CLT to MDW questions
- What time of day is best to fly CLT to MDW?
- Before 9 AM: 89% of flights arrived on time, against 61% 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 CLT to MDW?
- Southwest, with a season-adjusted 74% chance of operating and arriving on time over 718 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 CLT to MDW?
- May (63% on time); the best was September (86%), 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 CLT
- MDW to CLT (return)
- CLT to MCO 69%
- CLT to ATL 82%
- CLT to LGA 72%
- CLT to ORD 72%
- CLT to BOS 75%
- CLT to DFW 78%
- CLT to EWR 73%
- CLT to MIA 75%
- CLT to DTW 82%
- CLT to BNA 76%
- CLT to PHL 77%
- CLT to TPA 74%
Live status: FAA delays and ground stops