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Route on-time record

MIA to BWI: most on-time flights and the best time to fly

Miami (Miami International Airport) to Baltimore (Baltimore/Washington International Thurgood Marshall Airport). 2,301 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.2% were cancelled. The most reliable flight number was Southwest 481 at 6:00 AM.

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

MIA → BWI

Miami to Baltimore: 2,301 nonstop flights a year

On time (12 months)

74%

Cancelled

2.2%

avg delay 18 min

Best time to leave

Before 9 AM

95% on time vs 50% 6 to 9 PM

Most reliable airline

Envoy

82% chance on time

Check MIA to BWI fares

Lowest nonstop fare seen in the next two months: $39 (Frontier 2940 on 2026-10-29). 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 481

    6:00 AM → 8:40 AM2h 40m nonstop

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

    92%

    chance on time

    On time (history)
    100%
    Cancelled
    6.1%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 6.1% of the time (2 of 33).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 50%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Limited track record · 31 flights

    Find Southwest 481 fares Opens this date on Aviasales

  2. #2 · Southwest 255

    6:40 AM → 9:15 AM2h 35m nonstop

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

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 91% 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: 95% on time; 6 to 9 PM: 50%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Limited track record · 55 flights

    Find Southwest 255 fares Opens this date on Aviasales

  3. #3 · Envoy 4096 · sold as American Eagle

    3:58 PM → 6:46 PM2h 48m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    88%

    chance on time

    On time (history)
    98%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 98% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 44 flights

    Find 3:58 PM flight fares Opens this date on Aviasales

  4. #4 · Southwest 3871

    8:25 AM → 11:05 AM2h 40m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    84%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 50%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 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 3871 fares Opens this date on Aviasales

  5. #5 · American 1931

    8:15 AM → 10:51 AM2h 36m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    83%

    chance on time

    On time (history)
    92%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 92% of the time (38 flights, Jun 2025 to May 2026).
    • Never cancelled in 38 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 50%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Limited track record · 38 flights

    Find American 1931 fares Opens this date on Aviasales

  6. #6 · Frontier 1050

    5:01 AM → 7:45 AM2h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-03.

    76%

    chance on time

    On time (history)
    77%
    Cancelled
    4.3%
    Avg arrival delay
    11 min
    • Arrived on time 77% of the time (66 flights, Jun 2025 to May 2026).
    • Cancelled 4.3% of the time (3 of 69).
    • Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 50%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Moderate track record · 66 flights

    Find Frontier 1050 fares Opens this date on Aviasales

  7. #7 · Southwest 3154

    12:05 PM → 2:40 PM2h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3684; its record covers all of them.

    73%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 75% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 55 flights

    Find Southwest 3154 fares Opens this date on Aviasales

  8. #8 · Frontier 2940

    3:45 PM → 6:32 PM2h 47m nonstop

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

    73%

    chance on time

    On time (history)
    75%
    Cancelled
    1.0%
    Avg arrival delay
    24 min
    • Arrived on time 75% of the time (190 flights, Jun 2025 to May 2026).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 190 flights

    Find Frontier 2940 fares Opens this date on Aviasales

  9. #9 · Southwest 4022

    12:20 PM → 3:10 PM2h 50m nonstop

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

    72%

    chance on time

    On time (history)
    69%
    Cancelled
    3.0%
    Avg arrival delay
    26 min
    • Arrived on time 69% of the time (32 flights, Jun 2025 to May 2026).
    • Cancelled 3.0% of the time (1 of 33).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 32 flights

    Find Southwest 4022 fares Opens this date on Aviasales

  10. #10 · American 1634

    3:41 PM → 6:20 PM2h 39m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1183; its record covers all of them.

    67%

    chance on time

    On time (history)
    70%
    Cancelled
    1.5%
    Avg arrival delay
    20 min
    • Arrived on time 70% of the time (63 flights, Jun 2025 to May 2026).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside BWI's trouble window: 81% of its 43 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 63 flights

    Find American 1634 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Envoy Air (sold as American Eagle)82%

    118 flights · 88% on time as flown · 1.2% cancel

  • Southwest Airlines74%

    1,182 flights · 76% on time as flown · 2.3% cancel

  • Frontier Airlines74%

    268 flights · 75% on time as flown · 2.0% cancel

  • American Airlines67%

    684 flights · 68% on time as flown · 2.3% cancel

  • Spirit Airlines62%

    49 flights · 49% on time as flown · 3.2% cancel

On time by departure time

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

  • Before 9 AM95%

    560 flights · avg delay 5 min

  • 9 AM to noon80%

    149 flights · avg delay 13 min

  • Noon to 3 PM75%

    394 flights · avg delay 15 min

  • 3 to 6 PM68%

    614 flights · avg delay 23 min

  • 6 to 9 PM50%

    208 flights · avg delay 32 min

  • After 9 PM62%

    376 flights · avg delay 25 min

Best day: Wednesday (82%). Worst: Sunday (70%).

Smarter routing

Nearby airports that run more on time

  • FLL → IAD 85% chance on time

    Fort Lauderdale Hollywood International Airport to Washington Dulles International Airport · 743 flights a year · 66 mi from your airports · yours: 72%

    Rank flightsFares

  • MIA → IAD 78% chance on time

    Miami International Airport to Washington Dulles International Airport · 668 flights a year · 45 mi from your airports · yours: 72%

    Rank flightsFares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
79
F
79
M
73
A
77
M
75
J
72
J
64
A
69
S
79
O
83
N
83
D
77

What delays this route

  • Late-arriving aircraft46%
  • Airline (crew, maintenance, boarding)30%
  • Air traffic control and airport volume19%
  • Severe weather5%

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

MIA to BWI questions

What time of day is best to fly MIA to BWI?
Before 9 AM: 95% of flights arrived on time, against 50% 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 MIA to BWI?
Envoy, with a season-adjusted 82% chance of operating and arriving on time over 118 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 MIA to BWI?
July (64% on time); the best was October (83%), averaged over Jun 2023 to May 2026.
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 MIA

Live status: FAA delays and ground stops