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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.

BDL → MDW

Hartford to Chicago: 819 nonstop flights a year

On time (12 months)

82%

Cancelled

1.5%

avg delay 12 min

Best time to leave

9 AM to noon

92% on time vs 64% 6 to 9 PM

Most reliable airline

Southwest

81% chance on time

Check BDL to MDW fares

Lowest nonstop fare seen in the next two months: $158 (Southwest 3343 on 2026-11-21). 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 984

    7:35 AM → 9:05 AM2h 30m nonstop

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

    87%

    chance on time

    On time (history)
    91%
    Cancelled
    3.0%
    Avg arrival delay
    12 min
    • Arrived on time 91% of the time (32 flights, Jun 2025 to May 2026).
    • Cancelled 3.0% of the time (1 of 33).
    • Lands 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 984 fares Opens this date on Aviasales

  2. #2 · Southwest 312

    12:20 PM → 1:50 PM2h 30m nonstop

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

    86%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 312 fares Opens this date on Aviasales

  3. #3 · Southwest 2108

    7:45 AM → 9:05 AM2h 20m nonstop

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

    85%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 84% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Lands 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 2108 fares Opens this date on Aviasales

  4. #4 · Southwest 168

    11:20 AM → 12:50 PM2h 30m nonstop

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

    85%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    24 min
    • Arrived on time 87% of the time (15 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 92% on time; 6 to 9 PM: 64%).
    • Lands inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
    • 85% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 15 flights

    Find Southwest 168 fares Opens this date on Aviasales

  5. #5 · Southwest 202

    11:40 AM → 1:05 PM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    83%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 79% of the time (39 flights, Jun 2025 to May 2026).
    • Never cancelled in 39 scheduled flights.
    • Leaves in this route's most on-time window (9 AM to noon: 92% on time; 6 to 9 PM: 64%).
    • Short track record (39 flights), so its score leans on the airline's record at this hour.

    Limited track record · 39 flights

    Find Southwest 202 fares Opens this date on Aviasales

  6. #6 · Southwest 2390

    7:05 PM → 8:35 PM2h 30m nonstop

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

    73%

    chance on time

    On time (history)
    69%
    Cancelled
    0.0%
    Avg arrival delay
    24 min
    • Arrived on time 69% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 64% on time; 9 AM to noon: 92%).
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find Southwest 2390 fares Opens this date on Aviasales

  7. #7 · Southwest 2670

    6:45 PM → 8:10 PM2h 25m nonstop

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

    69%

    chance on time

    On time (history)
    56%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 56% of the time (9 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 64% on time; 9 AM to noon: 92%).
    • 64% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (9 flights), so its score leans on the airline's record at this hour.

    Limited track record · 9 flights

    Find Southwest 2670 fares Opens this date on Aviasales

  8. #8 · Southwest 588

    7:20 PM → 8:45 PM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    69%

    chance on time

    On time (history)
    58%
    Cancelled
    2.6%
    Avg arrival delay
    19 min
    • Arrived on time 58% of the time (38 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 64% on time; 9 AM to noon: 92%).
    • 61% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (38 flights), so its score leans on the airline's record at this hour.

    Limited track record · 38 flights

    Find Southwest 588 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines81%

    819 flights · 82% on time as flown · 1.5% cancel

On time by departure time

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

  • Before 9 AM92%

    343 flights · avg delay 8 min

  • 9 AM to noon92%

    38 flights · avg delay 11 min

  • Noon to 3 PM85%

    118 flights · avg delay 7 min

  • 3 to 6 PM78%

    133 flights · avg delay 14 min

  • 6 to 9 PM64%

    187 flights · avg delay 23 min

Best day: Wednesday (88%). Worst: Saturday (80%).

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