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

Charleston, SC (CHS) to Washington, DC (IAD) flight delay odds

83.5% of 759 official scheduled CHS-to-IAD flights arrived on time; 11.1% arrived at least 30 minutes late and 1.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
83.5%arrived on time
11.1%30+ min late
1.3%cancelled
759scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.4%all scheduled flights
120+ minutes late4.1%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+4.1 mincompleted flights

Which departure time was most reliable for CHS to IAD?

Among qualifying CHS-to-IAD departure window results, Late morning had the highest on-time rate: 94.0% of 281 flights. Evening was lowest at 69.9% across 83 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning28194.0%5.0%0.0%
Afternoon36077.5%15.0%1.4%
Evening8369.9%18.1%6.0%

Which weekday was most reliable for CHS to IAD?

Among qualifying CHS-to-IAD weekday results, Wednesday had the highest on-time rate: 88.1% of 109 flights. Sunday was lowest at 74.8% across 111 flights.

DayFlightsOn time30+ minCancelled
Monday11385.0%8.0%1.8%
Tuesday10483.7%13.5%1.0%
Wednesday10988.1%11.0%0.0%
Thursday11286.6%8.9%0.9%
Friday10780.4%13.1%0.9%
Saturday10386.4%6.8%1.9%
Sunday11174.8%16.2%2.7%

Which airline was most reliable for CHS to IAD?

Among qualifying CHS-to-IAD airline results, United Airlines had the highest on-time rate: 86.1% of 459 flights. Republic Airways was lowest at 79.7% across 300 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines45986.1%10.0%0.7%
Republic Airways30079.7%12.7%2.3%

Which month was most reliable for CHS to IAD?

Among qualifying CHS-to-IAD month results, September 2025 had the highest on-time rate: 96.0% of 50 flights. January 2026 was lowest at 68.4% across 57 flights.

MonthFlightsOn time30+ minCancelled
July 20256379.4%12.7%4.8%
August 20255886.2%10.3%0.0%
September 20255096.0%4.0%0.0%
October 20255186.3%9.8%0.0%
November 20256178.7%14.8%1.6%
December 20255771.9%15.8%0.0%
January 20265768.4%21.1%8.8%
February 20265388.7%9.4%0.0%
March 20269077.8%14.4%1.1%
April 20267785.7%10.4%0.0%
May 20268292.7%4.9%0.0%
June 20266091.7%5.0%0.0%

What drove CHS to IAD delay minutes?

Late aircraft was the largest recorded CHS-to-IAD delay category, accounting for 72.0% of 10,018 BTS-attributed delay minutes during July 2025–June 2026.

Airline9.5%
Late aircraft72.0%
National airspace17.2%
Weather1.2%
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.