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Route on-time record

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

Indianapolis (Indianapolis International Airport) to Chicago (Chicago Midway International Airport). 611 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Southwest 2479 at 6:50 AM.

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

IND → MDW

Indianapolis to Chicago: 611 nonstop flights a year

On time (12 months)

76%

Cancelled

0.8%

avg delay 12 min

Best time to leave

Before 9 AM

90% on time vs 55% 6 to 9 PM

Most reliable airline

Southwest

76% chance on time

Check IND to MDW fares

Lowest nonstop fare seen in the next two months: $270 (Southwest 4839 on 2026-10-27). 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 2479

    6:50 AM → 6:45 AM55m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    89%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 93% 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: 90% on time; 6 to 9 PM: 55%).
    • Short track record (55 flights), so its score leans on the airline's record at this hour.

    Limited track record · 55 flights

    Find Southwest 2479 fares Opens this date on Aviasales

  2. #2 · Southwest 3406

    6:40 AM → 6:40 AM1h 00m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    84%

    chance on time

    On time (history)
    81%
    Cancelled
    3.0%
    Avg arrival delay
    9 min
    • Arrived on time 81% 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: 90% on time; 6 to 9 PM: 55%).
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find Southwest 3406 fares Opens this date on Aviasales

  3. #3 · Southwest 3583

    5:10 PM → 5:10 PM1h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-27.

    62%

    chance on time

    On time (history)
    44%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 44% of the time (16 flights, Jun 2025 to May 2026).
    • Short track record (16 flights), so its score leans on the airline's record at this hour.

    Limited track record · 16 flights

    Find Southwest 3583 fares Opens this date on Aviasales

  4. #4 · Southwest 269

    5:50 PM → 5:50 PM1h 00m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    62%

    chance on time

    On time (history)
    48%
    Cancelled
    3.0%
    Avg arrival delay
    28 min
    • Arrived on time 48% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 3.0% of the time (1 of 33).
    • 67% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (31 flights), so its score leans on the airline's record at this hour.

    Limited track record · 31 flights

    Find Southwest 269 fares Opens this date on Aviasales

  5. #5 · Southwest 2480

    6:00 PM → 6:00 PM1h 00m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    61%

    chance on time

    On time (history)
    50%
    Cancelled
    0.0%
    Avg arrival delay
    28 min
    • Arrived on time 50% of the time (38 flights, Jun 2025 to May 2026).
    • Never cancelled in 39 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 55% on time; Before 9 AM: 90%).
    • 63% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 38 flights

    Find Southwest 2480 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines76%

    611 flights · 76% on time as flown · 0.8% cancel

On time by departure time

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

  • Before 9 AM90%

    301 flights · avg delay 7 min

  • 3 to 6 PM68%

    195 flights · avg delay 14 min

  • 6 to 9 PM55%

    101 flights · avg delay 22 min

Best day: Thursday (83%). Worst: Monday (71%).

On time by month

All airlines, Jun 2025 to May 2026. One year of data, so a single stormy month can stand out.

J
78
F
76
M
64
A
67
M
74
J
-
J
-
A
83
S
88
O
77
N
89
D
68

What delays this route

  • Late-arriving aircraft45%
  • Air traffic control and airport volume30%
  • Airline (crew, maintenance, boarding)25%

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

IND to MDW questions

What time of day is best to fly IND to MDW?
Before 9 AM: 90% of flights arrived on time, against 55% 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 IND to MDW?
Southwest, with a season-adjusted 76% chance of operating and arriving on time over 611 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 IND to MDW?
March (64% on time); the best was November (89%), from one year of data, so one bad storm season can move a month.
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 IND

Live status: FAA delays and ground stops