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ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We 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 → DAL

Chicago to Dallas: 2,155 nonstop flights a year

On time (12 months)

77%

Cancelled

1.9%

avg delay 14 min

Best time to leave

Before 9 AM

91% on time vs 62% 6 to 9 PM

Most reliable airline

Southwest

76% chance on time

Check MDW to DAL fares

Lowest nonstop fare seen in the next two months: $248 (Southwest 1349 on 2026-10-28). 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 1059

    5:30 AM → 7:55 AM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 7; its record covers all of them.

    94%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (47 flights, Jun 2025 to May 2026).
    • Never cancelled in 47 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 62%).
    • 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 · 47 flights

    Find Southwest 1059 fares Opens this date on Aviasales

  2. #2 · Southwest 915

    5:05 AM → 7:35 AM2h 30m nonstop

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

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 90% of the time (20 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 62%).
    • 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 (20 flights), so its score leans on the airline's record at this hour.

    Limited track record · 20 flights

    Find Southwest 915 fares Opens this date on Aviasales

  3. #3 · Southwest 2345

    7:20 AM → 9:45 AM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 1845; its record covers all of them.

    85%

    chance on time

    On time (history)
    89%
    Cancelled
    2.2%
    Avg arrival delay
    4 min
    • Arrived on time 89% of the time (45 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 62%).
    • 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 (45 flights), so its score leans on the airline's record at this hour.

    Limited track record · 45 flights

    Find Southwest 2345 fares Opens this date on Aviasales

  4. #4 · Southwest 3257

    10:10 AM → 12:35 PM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 557; its record covers all of them.

    79%

    chance on time

    On time (history)
    85%
    Cancelled
    4.0%
    Avg arrival delay
    14 min
    • Arrived on time 85% of the time (71 flights, Jun 2025 to May 2026).
    • Cancelled 4.0% of the time (3 of 75).
    • Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
    • Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.

    Moderate track record · 71 flights

    Find Southwest 3257 fares Opens this date on Aviasales

  5. #5 · Southwest 4406

    11:00 AM → 1:30 PM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    73%

    chance on time

    On time (history)
    63%
    Cancelled
    0.0%
    Avg arrival delay
    27 min
    • Arrived on time 63% of the time (8 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.
    • Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 4406 fares Opens this date on Aviasales

  6. #6 · Southwest 889

    2:10 PM → 4:40 PM2h 30m nonstop

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

    73%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    21 min
    • Arrived on time 81% of the time (16 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 (16 flights), so its score leans on the airline's record at this hour.

    Limited track record · 16 flights

    Find Southwest 889 fares Opens this date on Aviasales

  7. #7 · Southwest 63

    6:55 PM → 9:20 PM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 3102; its record covers all of them.

    73%

    chance on time

    On time (history)
    77%
    Cancelled
    3.6%
    Avg arrival delay
    19 min
    • Arrived on time 77% of the time (53 flights, Jun 2025 to May 2026).
    • Cancelled 3.6% of the time (2 of 55).
    • Leaves in this route's least on-time window (6 to 9 PM: 62% 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).

    Limited track record · 53 flights

    Find Southwest 63 fares Opens this date on Aviasales

  8. #8 · Southwest 61

    6:25 PM → 8:55 PM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    71%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    23 min
    • Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 62% 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).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 61 fares Opens this date on Aviasales

  9. #9 · Southwest 2310

    2:20 PM → 4:50 PM2h 30m nonstop

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

    69%

    chance on time

    On time (history)
    71%
    Cancelled
    0.0%
    Avg arrival delay
    33 min
    • Arrived on time 71% of the time (28 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 (28 flights), so its score leans on the airline's record at this hour.

    Limited track record · 28 flights

    Find Southwest 2310 fares Opens this date on Aviasales

  10. #10 · Southwest 1070

    5:00 PM → 7:30 PM2h 28m nonstop

    Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 3919; its record covers all of them.

    69%

    chance on time

    On time (history)
    69%
    Cancelled
    1.5%
    Avg arrival delay
    19 min
    • Arrived on time 69% of the time (65 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).

    Moderate track record · 65 flights

    Find Southwest 1070 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines76%

    2,155 flights · 77% on time as flown · 1.9% cancel

On time by departure time

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

  • Before 9 AM91%

    660 flights · avg delay 5 min

  • 9 AM to noon82%

    304 flights · avg delay 11 min

  • Noon to 3 PM75%

    331 flights · avg delay 13 min

  • 3 to 6 PM73%

    353 flights · avg delay 16 min

  • 6 to 9 PM62%

    482 flights · avg delay 26 min

Best day: Tuesday (83%). Worst: Sunday (73%).

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