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Route on-time record

OKC to MDW: most on-time flights and the best time to fly

Oklahoma City (OKC Will Rogers World Airport) to Chicago (Chicago Midway International Airport). 557 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was Southwest 3622 at 5:05 AM.

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

OKC → MDW

Oklahoma City to Chicago: 557 nonstop flights a year

On time (12 months)

84%

Cancelled

1.3%

avg delay 9 min

Best time to leave

Before 9 AM

93% on time vs 76% 3 to 6 PM

Most reliable airline

Southwest

84% chance on time

Check OKC to MDW 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. #1 · Southwest 3622

    5:05 AM → 6:55 AM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2561, 2662; its record covers all of them.

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    1.1%
    Avg arrival delay
    4 min
    • Arrived on time 91% of the time (85 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 76%).

    Moderate track record · 85 flights

    Find Southwest 3622 fares Opens this date on Aviasales

  2. #2 · Southwest 2883

    2:55 PM → 4:45 PM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-04-05.

    83%

    chance on time

    On time (history)
    83%
    Cancelled
    7.7%
    Avg arrival delay
    6 min
    • Arrived on time 83% of the time (12 flights, Jun 2025 to May 2026).
    • Short track record (12 flights), so its score leans on the airline's record at this hour.

    Limited track record · 12 flights

    Find Southwest 2883 fares Opens this date on Aviasales

  3. #3 · Southwest 1222

    4:00 PM → 5:50 PM1h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2015; its record covers all of them.

    73%

    chance on time

    On time (history)
    67%
    Cancelled
    1.4%
    Avg arrival delay
    17 min
    • Arrived on time 67% of the time (69 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 76% on time; Before 9 AM: 93%).
    • 67% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 69 flights

    Find Southwest 1222 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines84%

    557 flights · 84% on time as flown · 1.3% cancel

On time by departure time

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

  • Before 9 AM93%

    235 flights · avg delay 4 min

  • Noon to 3 PM85%

    35 flights · avg delay 6 min

  • 3 to 6 PM76%

    249 flights · avg delay 14 min

Best day: Monday (90%). Worst: Tuesday (80%).

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.

J
88
F
94
M
85
A
86
M
80
J
74
J
79
A
88
S
92
O
94
N
95
D
80

What delays this route

  • Late-arriving aircraft59%
  • Air traffic control and airport volume19%
  • Airline (crew, maintenance, boarding)11%
  • Severe weather10%

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

OKC to MDW questions

What time of day is best to fly OKC to MDW?
Before 9 AM: 93% of flights arrived on time, against 76% 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 OKC to MDW?
Southwest, with a season-adjusted 84% chance of operating and arriving on time over 557 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 OKC to MDW?
June (74% on time); the best was November (95%), 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 OKC

Live status: FAA delays and ground stops