BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
MIABWI

Miami, FL (MIA) to Baltimore, MD (BWI) flight delay odds

Historically, 71.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,284 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
71.9%arrived on time
17.3%30+ min late
2.0%cancelled
2,284scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.6%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+9.8 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning56092.1%3.2%2.3%
Late morning14877.0%14.9%2.7%
Afternoon85769.9%18.4%1.3%
Evening35154.1%30.5%2.8%
Night36860.9%24.5%1.9%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday32666.6%19.6%2.8%
Tuesday28981.0%10.0%0.7%
Wednesday28179.4%13.2%0.7%
Thursday32175.1%18.1%1.2%
Friday32971.7%17.0%0.6%
Saturday38871.9%18.3%2.1%
Sunday35060.9%22.9%5.1%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,18073.2%16.4%2.0%
American Airlines68867.6%19.5%2.0%
Frontier Airlines26572.8%17.4%1.9%
Envoy Air11490.4%7.9%0.0%
Spirit Airlines3748.6%35.1%5.4%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202519057.9%29.5%5.3%
August 202519764.0%26.4%0.5%
September 202515581.9%9.7%0.0%
October 202517781.4%13.6%0.6%
November 202518379.2%9.3%2.7%
December 202521872.0%17.4%0.9%
January 202621178.7%13.7%6.2%
February 202618270.9%13.2%2.2%
March 202618162.4%23.8%3.9%
April 202620772.0%18.8%0.5%
May 202620475.5%11.8%0.0%
June 202617968.7%19.0%0.6%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline30.0%
Late aircraft45.4%
National airspace19.3%
Weather5.0%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.