ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
MDW → MCI
Chicago to Kansas City: 2,093 nonstop flights a year
On time (12 months)
79%
Cancelled
1.3%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 54% after 9 PM
Most reliable airline
Southwest
78% chance on time
Lowest nonstop fare seen in the next two months: $242 (Southwest 2070 on 2026-10-25). 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 2644
7:50 AM → 9:20 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3192; its record covers all of them.
91%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.1%
- Avg arrival delay
- 6 min
- Arrived on time 94% of the time (87 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; After 9 PM: 54%).
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
Moderate track record · 87 flights
Find Southwest 2644 fares Opens this date on Aviasales#2 · Southwest 3805
11:40 AM → 1:10 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 92%
- Cancelled
- 13.3%
- Avg arrival delay
- 4 min
- Arrived on time 92% of the time (13 flights, Jun 2025 to May 2026).
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 3805 fares Opens this date on Aviasales#3 · Southwest 3548
10:00 AM → 11:30 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 80% of the time (55 flights, Jun 2025 to May 2026).
- Never cancelled in 55 scheduled flights.
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- Short track record (55 flights), so its score leans on the airline's record at this hour.
Limited track record · 55 flights
Find Southwest 3548 fares Opens this date on Aviasales#4 · Southwest 3691
10:10 AM → 11:40 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
- On time (history)
- 77%
- Cancelled
- 6.1%
- Avg arrival delay
- 13 min
- Arrived on time 77% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 6.1% of the time (2 of 33).
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- Short track record (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find Southwest 3691 fares Opens this date on Aviasales#5 · Southwest 2950
11:55 AM → 1:25 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 280; its record covers all of them.
78%
chance on time
- On time (history)
- 75%
- Cancelled
- 1.0%
- Avg arrival delay
- 21 min
- Arrived on time 75% of the time (97 flights, Jun 2025 to May 2026).
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- 61% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 97 flights
Find Southwest 2950 fares Opens this date on Aviasales#6 · Southwest 458
5:25 PM → 6:55 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 74% of the time (70 flights, Jun 2025 to May 2026).
- Never cancelled in 70 scheduled flights.
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
Moderate track record · 70 flights
Find Southwest 458 fares Opens this date on Aviasales#7 · Southwest 943
2:30 PM → 4:00 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3493; its record covers all of them.
75%
chance on time
- On time (history)
- 71%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 71% of the time (59 flights, Jun 2025 to May 2026).
- Never cancelled in 59 scheduled flights.
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
- 66% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 59 flights
Find Southwest 943 fares Opens this date on Aviasales#8 · Southwest 3215
4:10 PM → 5:40 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
73%
chance on time
- On time (history)
- 73%
- Cancelled
- 4.3%
- Avg arrival delay
- 20 min
- Arrived on time 73% of the time (22 flights, Jun 2025 to May 2026).
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
- Short track record (22 flights), so its score leans on the airline's record at this hour.
Limited track record · 22 flights
Find Southwest 3215 fares Opens this date on Aviasales#9 · Southwest 1513
6:30 PM → 8:00 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-04-06.
69%
chance on time
- On time (history)
- 61%
- Cancelled
- 3.0%
- Avg arrival delay
- 20 min
- Arrived on time 61% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
- 64% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 31 flights
Find Southwest 1513 fares Opens this date on Aviasales#10 · Southwest 3304
9:30 PM → 11:00 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3960; its record covers all of them.
62%
chance on time
- On time (history)
- 59%
- Cancelled
- 2.5%
- Avg arrival delay
- 29 min
- Arrived on time 59% of the time (78 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (After 9 PM: 54% on time; Before 9 AM: 91%).
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
Moderate track record · 78 flights
Find Southwest 3304 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines78%
2,093 flights · 79% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
509 flights · avg delay 5 min
- 9 AM to noon87%
355 flights · avg delay 8 min
- Noon to 3 PM81%
379 flights · avg delay 11 min
- 3 to 6 PM75%
338 flights · avg delay 15 min
- 6 to 9 PM69%
322 flights · avg delay 18 min
- After 9 PM54%
190 flights · avg delay 30 min
Best day: Tuesday (83%). Worst: Sunday (76%).
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