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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.

BWI → MCI

Baltimore to Kansas City: 887 nonstop flights a year

On time (12 months)

76%

Cancelled

1.1%

avg delay 17 min

Best time to leave

Before 9 AM

90% on time vs 53% after 9 PM

Most reliable airline

Southwest

76% chance on time

Check BWI to MCI fares

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

Best trips

5 nonstop, 41 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 50m

    8:15 AM → 10:05 AM

    90%

    arrive on time

    8:15 AM BWI → 10:05 AM MCI2h 50m

    Southwest 2334 · also flew as 3820

    Boeing 737 MAX 8 or 737-800 · 1–23 yrs old
    91% on time · 0.9% cancel
    Find Southwest 2334 fares Opens this date on Aviasales

  2. #2 · Nonstop · 2h 45m

    3:40 PM → 5:25 PM

    79%

    arrive on time

    3:40 PM BWI → 5:25 PM MCI2h 45m

    Southwest 3986

    Boeing 737-700 · 3–23 yrs old
    80% on time · 1.1% cancel
    Find Southwest 3986 fares Opens this date on Aviasales

  3. #3 · Nonstop · 2h 45m

    10:05 AM → 11:50 AM

    78%

    arrive on time

    10:05 AM BWI → 11:50 AM MCI2h 45m

    Southwest 1168 · also flew as 3101

    Boeing 737-700 or 737-800 · 2–22 yrs old
    78% on time · 0.9% cancel
    Find Southwest 1168 fares Opens this date on Aviasales

  4. #4 · 1 connection · 5h 02m · one ticket (Delta)

    5:40 AM → 9:51 AM

    93%

    connections made

    82%

    arrive on time

    5:40 AM BWI → 7:19 AM DTW1h 37m

    Delta 2601

    Boeing 717 or Airbus A320 · 23–33 yrs old
    93% on time · 2.0% cancel
    Connect in DTW · 1h 18m · 96% chance to make it · same ticket: the airline rebooks you if you miss it

    8:37 AM DTW → 9:51 AM MCI2h 07m

    Delta 2826

    Boeing 717 · 22–27 yrs old
    88% on time · 1.3% cancel
    Find this Delta trip Look for Delta 2601 + Delta 2826 on Aviasales

  5. #5 · 1 connection · 6h 05m · one ticket (Southwest)

    9:30 AM → 2:35 PM

    97%

    connections made

    83%

    arrive on time

    9:30 AM BWI → 10:50 AM STL2h 20m

    Southwest 1335

    Boeing 737 MAX 8 or 737-800 · 3–11 yrs old
    88% on time · 1.0% cancel
    Connect in STL · 2h 35m · 98% chance to make it · same ticket: the airline rebooks you if you miss it

    1:25 PM STL → 2:35 PM MCI1h 10m

    Southwest 3616

    Boeing 737-700 · 17–22 yrs old
    86% on time · 0.3% cancel
    Find this Southwest trip Look for Southwest 1335 + Southwest 3616 on Aviasales

  6. #6 · Nonstop · 2h 50m

    10:15 PM → 12:05 AM

    71%

    arrive on time

    10:15 PM BWI → 12:05 AM MCI2h 50m

    Southwest 3336

    Boeing 737 MAX 8 or 737-700 · 2–23 yrs old
    72% on time · 1.3% cancel
    Find Southwest 3336 fares Opens this date on Aviasales

  7. #7 · 1 connection · 5h 50m · one ticket (Southwest)

    9:45 AM → 2:35 PM

    96%

    connections made

    82%

    arrive on time

    9:45 AM BWI → 11:05 AM STL2h 20m

    Southwest 2496

    Boeing 737-700 · 6–22 yrs old
    87% on time · 1.1% cancel
    Connect in STL · 2h 20m · 97% chance to make it · same ticket: the airline rebooks you if you miss it

    1:25 PM STL → 2:35 PM MCI1h 10m

    Southwest 3616

    Boeing 737-700 · 17–22 yrs old
    86% on time · 0.3% cancel
    Find this Southwest trip Look for Southwest 2496 + Southwest 3616 on Aviasales

  8. #8 · 1 connection · 5h 30m · one ticket (Southwest)

    9:40 AM → 2:10 PM

    94%

    connections made

    80%

    arrive on time

    9:40 AM BWI → 10:40 AM BNA2h 00m

    Southwest 1051

    Boeing 737 MAX 8 or 737-800 · 1–12 yrs old
    91% on time · 1.3% cancel
    Connect in BNA · 1h 40m · 96% chance to make it · same ticket: the airline rebooks you if you miss it

    12:20 PM BNA → 2:10 PM MCI1h 50m

    Southwest 3806

    Boeing 737-700 · 15–24 yrs old
    85% on time · 0.8% cancel
    Find this Southwest trip Look for Southwest 1051 + Southwest 3806 on Aviasales

  9. #9 · 1 connection · 4h 15m · one ticket (Southwest)

    6:25 AM → 9:40 AM

    81%

    connections made

    76%

    arrive on time

    6:25 AM BWI → 7:45 AM STL2h 20m

    Southwest 1333

    Boeing 737 MAX 8 or 737-800 · 1–10 yrs old
    92% on time · 0.9% cancel
    Connect in STL · 45m · 81% chance to make it · same ticket: the airline rebooks you if you miss it

    8:30 AM STL → 9:40 AM MCI1h 10m

    Southwest 4481 · also flew as 4313

    Boeing 737-700 or 737 MAX 8 · 2–22 yrs old
    94% on time · 0.2% cancel
    Find this Southwest trip Look for Southwest 1333 + Southwest 4481 on Aviasales

  10. #10 · 1 connection · 5h 46m · one ticket (Delta)

    7:28 AM → 12:20 PM

    91%

    connections made

    80%

    arrive on time

    7:28 AM BWI → 9:35 AM ATL2h 00m

    Delta 2579

    Boeing 737-900ER or Airbus A321 · 8–12 yrs old
    89% on time · 1.7% cancel
    Connect in ATL · 1h 35m · 95% chance to make it · same ticket: the airline rebooks you if you miss it

    11:10 AM ATL → 12:20 PM MCI2h 11m

    Delta 2908

    Boeing 737-900ER · 8–13 yrs old
    88% on time · 2.5% cancel
    Find this Delta trip Look for Delta 2579 + Delta 2908 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 Airlines76%

    887 flights · 76% on time as flown · 1.1% cancel

On time by departure time

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

  • Before 9 AM90%

    173 flights · avg delay 8 min

  • 9 AM to noon86%

    190 flights · avg delay 8 min

  • Noon to 3 PM72%

    79 flights · avg delay 16 min

  • 3 to 6 PM76%

    142 flights · avg delay 21 min

  • 6 to 9 PM69%

    210 flights · avg delay 24 min

  • After 9 PM53%

    93 flights · avg delay 30 min

Best day: Tuesday (78%). Worst: Monday (70%).

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