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

Baltimore, MD (BWI) to Charleston, SC (CHS) flight delay odds

Historically, 79.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,241 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
79.3%arrived on time
11.4%30+ min late
1.4%cancelled
1,241scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late1.9%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+4.7 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 morning33287.7%4.5%1.5%
Late morning17686.4%5.1%0.0%
Afternoon23683.1%10.6%0.8%
Evening49669.6%18.3%2.0%

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
Monday19476.8%14.4%2.1%
Tuesday16683.7%11.4%0.6%
Wednesday16185.7%8.1%0.0%
Thursday18575.7%7.6%1.1%
Friday19479.4%10.8%1.0%
Saturday13681.6%11.0%2.2%
Sunday20574.6%15.1%2.4%

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 Airlines1,22979.3%11.5%1.4%
Spirit Airlines1283.3%0.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202511767.5%18.8%2.6%
August 20259976.8%16.2%0.0%
September 20259085.6%10.0%0.0%
October 202511880.5%11.0%0.0%
November 202510380.6%10.7%1.9%
December 202510477.9%10.6%1.9%
January 20269685.4%4.2%7.3%
February 20268188.9%6.2%1.2%
March 202610576.2%12.4%1.0%
April 202610985.3%2.8%0.0%
May 202611276.8%13.4%0.0%
June 202610774.8%17.8%0.9%

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.

Airline28.9%
Late aircraft50.8%
National airspace15.7%
Weather4.6%
Security0.0%
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.