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 → OKC
Chicago to Oklahoma City: 556 nonstop flights a year
On time (12 months)
77%
Cancelled
1.4%
avg delay 15 min
Best time to leave
Before 9 AM
93% on time vs 58% after 9 PM
Most reliable airline
Southwest
76% chance on time
Lowest nonstop fare seen in the next two months: $159 (Southwest 2985 on 2026-11-04). 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 1765
10:15 AM → 12:25 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 83% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 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 (54 flights), so its score leans on the airline's record at this hour.
Limited track record · 54 flights
Find Southwest 1765 fares Opens this date on Aviasales#2 · Southwest 4078
10:30 AM → 12:40 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
78%
chance on time
- On time (history)
- 78%
- Cancelled
- 3.0%
- Avg arrival delay
- 22 min
- Arrived on time 78% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 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 (32 flights), so its score leans on the airline's record at this hour.
Limited track record · 32 flights
Find Southwest 4078 fares Opens this date on Aviasales#3 · Southwest 1587
9:25 PM → 11:40 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
66%
chance on time
- On time (history)
- 61%
- Cancelled
- 6.1%
- Avg arrival delay
- 21 min
- Arrived on time 61% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 6.1% of the time (2 of 33).
- Leaves in this route's least on-time window (After 9 PM: 58% on time; Before 9 AM: 93%).
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
Limited track record · 31 flights
Find Southwest 1587 fares Opens this date on Aviasales#4 · Southwest 1098
10:05 PM → 12:15 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
64%
chance on time
- On time (history)
- 60%
- Cancelled
- 3.7%
- Avg arrival delay
- 20 min
- Arrived on time 60% of the time (52 flights, Jun 2025 to May 2026).
- Cancelled 3.7% of the time (2 of 54).
- Leaves in this route's least on-time window (After 9 PM: 58% on time; Before 9 AM: 93%).
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
Limited track record · 52 flights
Find Southwest 1098 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines76%
556 flights · 77% on time as flown · 1.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
166 flights · avg delay 5 min
- 9 AM to noon86%
116 flights · avg delay 11 min
- 6 to 9 PM76%
91 flights · avg delay 19 min
- After 9 PM58%
165 flights · avg delay 24 min
Best day: Wednesday (80%). Worst: Friday (71%).
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