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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.

MCI → BWI

Kansas City to Baltimore: 891 nonstop flights a year

On time (12 months)

82%

Cancelled

2.0%

avg delay 11 min

Best time to leave

Before 9 AM

93% on time vs 56% 6 to 9 PM

Most reliable airline

Southwest

80% chance on time

Check MCI to BWI fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

5 nonstop, 39 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 2h 25m

    5:50 AM → 9:15 AM

    88%

    arrive on time

    5:50 AM MCI → 9:15 AM BWI2h 25m

    Southwest 3012

    Boeing 737 MAX 8 · 1–18 yrs old
    90% on time · 1.5% cancel
    Find Southwest 3012 fares Opens this date on Aviasales

  2. #2 · Nonstop · 2h 20m

    5:20 AM → 8:40 AM

    85%

    arrive on time

    5:20 AM MCI → 8:40 AM BWI2h 20m

    Southwest 3796

    Boeing 737 MAX 8 or 737-700 · 1–21 yrs old
    86% on time · 1.7% cancel
    Find Southwest 3796 fares Opens this date on Aviasales

  3. #3 · Nonstop · 2h 25m

    12:05 PM → 3:30 PM

    79%

    arrive on time

    12:05 PM MCI → 3:30 PM BWI2h 25m

    Southwest 455

    Boeing 737-800 or 737 MAX 8 · 0–9 yrs old
    81% on time · 1.9% cancel
    Find Southwest 455 fares Opens this date on Aviasales

  4. #4 · 1 connection · 4h 50m · one ticket (Southwest)

    8:25 AM → 2:15 PM

    97%

    connections made

    86%

    arrive on time

    8:25 AM MCI → 9:30 AM STL1h 05m

    Southwest 4015

    Boeing 737-700 · 4–22 yrs old
    94% on time · 0.4% cancel
    Connect in STL · 1h 45m · 99% chance to make it · same ticket: the airline rebooks you if you miss it

    11:15 AM STL → 2:15 PM BWI2h 00m

    Southwest 2098

    Boeing 737-700 · 18–22 yrs old
    88% on time · 1.0% cancel
    Find this Southwest trip Look for Southwest 4015 + Southwest 2098 on Aviasales

  5. #5 · 1 connection · 4h 50m · one ticket (Southwest)

    6:30 AM → 12:20 PM

    92%

    connections made

    85%

    arrive on time

    6:30 AM MCI → 8:05 AM BNA1h 35m

    Southwest 3635

    Boeing 737 MAX 8 or 737-800 · 1–21 yrs old
    91% on time · 0.5% cancel
    Connect in BNA · 1h 25m · 95% chance to make it · same ticket: the airline rebooks you if you miss it

    9:30 AM BNA → 12:20 PM BWI1h 50m

    Southwest 548

    Boeing 737 MAX 8 or 737-800 · 1–12 yrs old
    92% on time · 2.6% cancel
    Find this Southwest trip Look for Southwest 3635 + Southwest 548 on Aviasales

  6. #6 · 1 connection · 4h 55m · one ticket (Southwest)

    6:30 AM → 12:25 PM

    93%

    connections made

    85%

    arrive on time

    6:30 AM MCI → 8:05 AM BNA1h 35m

    Southwest 3635

    Boeing 737 MAX 8 or 737-800 · 1–21 yrs old
    91% on time · 0.5% cancel
    Connect in BNA · 1h 35m · 96% chance to make it · same ticket: the airline rebooks you if you miss it

    9:40 AM BNA → 12:25 PM BWI1h 45m

    Southwest 2734

    Boeing 737-700 · 4–23 yrs old
    91% on time · 1.9% cancel
    Find this Southwest trip Look for Southwest 3635 + Southwest 2734 on Aviasales

  7. #7 · 1 connection · 5h 00m · one ticket (Southwest)

    8:15 AM → 2:15 PM

    95%

    connections made

    84%

    arrive on time

    8:15 AM MCI → 9:20 AM STL1h 05m

    Southwest 594

    Boeing 737 MAX 8 or 737-700 · 4–20 yrs old
    89% on time · 0.9% cancel
    Connect in STL · 1h 55m · 97% chance to make it · same ticket: the airline rebooks you if you miss it

    11:15 AM STL → 2:15 PM BWI2h 00m

    Southwest 2098

    Boeing 737-700 · 18–22 yrs old
    88% on time · 1.0% cancel
    Find this Southwest trip Look for Southwest 594 + Southwest 2098 on Aviasales

  8. #8 · 1 connection · 6h 55m · one ticket (Southwest)

    8:25 AM → 4:20 PM

    99%

    connections made

    87%

    arrive on time

    8:25 AM MCI → 9:30 AM STL1h 05m

    Southwest 4015

    Boeing 737-700 · 4–22 yrs old
    94% on time · 0.4% cancel
    Connect in STL · 3h 45m · 100% chance to make it · same ticket: the airline rebooks you if you miss it

    1:15 PM STL → 4:20 PM BWI2h 05m

    Southwest 2737

    Boeing 737-700 · 18–22 yrs old
    88% on time · 1.0% cancel
    Find this Southwest trip Look for Southwest 4015 + Southwest 2737 on Aviasales

  9. #9 · 1 connection · 5h 20m · one ticket (Southwest)

    5:30 AM → 11:50 AM

    94%

    connections made

    82%

    arrive on time

    5:30 AM MCI → 6:55 AM MDW1h 25m

    Southwest 3313 · also flew as 3513

    Boeing 737-700 or 737-800 · 1–22 yrs old
    87% on time · 0.8% cancel
    Connect in MDW · 2h 05m · 97% chance to make it · same ticket: the airline rebooks you if you miss it

    9:00 AM MDW → 11:50 AM BWI1h 50m

    Southwest 1266

    Boeing 737-800 or 737 MAX 8 · 1–12 yrs old
    87% on time · 2.0% cancel
    Find this Southwest trip Look for Southwest 3313 + Southwest 1266 on Aviasales

  10. #10 · 1 connection · 4h 15m · one ticket (Southwest)

    11:05 AM → 4:20 PM

    89%

    connections made

    78%

    arrive on time

    11:05 AM MCI → 12:10 PM STL1h 05m

    Southwest 2352

    Boeing 737-700 · 18–24 yrs old
    91% on time · 0.5% cancel
    Connect in STL · 1h 05m · 90% chance to make it · same ticket: the airline rebooks you if you miss it

    1:15 PM STL → 4:20 PM BWI2h 05m

    Southwest 2737

    Boeing 737-700 · 18–22 yrs old
    88% on time · 1.0% cancel
    Find this Southwest trip Look for Southwest 2352 + Southwest 2737 on Aviasales

Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines80%

    891 flights · 82% on time as flown · 2.0% cancel

On time by departure time

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

  • Before 9 AM93%

    364 flights · avg delay 6 min

  • 9 AM to noon88%

    109 flights · avg delay 6 min

  • Noon to 3 PM87%

    114 flights · avg delay 6 min

  • 3 to 6 PM67%

    189 flights · avg delay 19 min

  • 6 to 9 PM56%

    115 flights · avg delay 22 min

Best day: Wednesday (85%). Worst: Thursday (77%).

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