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

Charleston, SC (CHS) to Boston, MA (BOS) flight delay odds

69.8% of 1,131 official scheduled CHS-to-BOS flights arrived on time; 21.7% arrived at least 30 minutes late and 2.1% 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 SIGNALVariable
69.8%arrived on time
21.7%30+ min late
2.1%cancelled
1,131scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late12.7%all scheduled flights
120+ minutes late4.1%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+15.4 mincompleted flights

Which departure time was most reliable for CHS to BOS?

Among qualifying CHS-to-BOS departure window results, Early morning had the highest on-time rate: 90.5% of 105 flights. Evening was lowest at 61.4% across 166 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning10590.5%5.7%0.0%
Late morning18086.7%10.0%1.1%
Afternoon67864.0%25.2%2.7%
Evening16661.4%30.1%2.4%

Which weekday was most reliable for CHS to BOS?

Among qualifying CHS-to-BOS weekday results, Saturday had the highest on-time rate: 78.3% of 189 flights. Thursday was lowest at 64.3% across 154 flights.

DayFlightsOn time30+ minCancelled
Monday16069.4%21.2%3.8%
Tuesday13970.5%22.3%2.2%
Wednesday13371.4%18.8%0.8%
Thursday15464.3%27.9%1.3%
Friday15768.8%23.6%1.9%
Saturday18978.3%13.8%2.1%
Sunday19965.3%24.6%2.5%

Which airline was most reliable for CHS to BOS?

Among qualifying CHS-to-BOS airline results, Republic Airways had the highest on-time rate: 83.3% of 90 flights. Delta Air Lines was lowest at 66.4% across 390 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways65169.9%22.0%1.8%
Delta Air Lines39066.4%23.3%2.8%
Republic Airways9083.3%12.2%1.1%

Which month was most reliable for CHS to BOS?

Among qualifying CHS-to-BOS month results, April 2026 had the highest on-time rate: 80.5% of 113 flights. September 2025 was lowest at 50.5% across 97 flights.

MonthFlightsOn time30+ minCancelled
July 20259357.0%32.3%3.2%
August 20259473.4%17.0%1.1%
September 20259750.5%37.1%0.0%
October 20259952.5%38.4%0.0%
November 20259375.3%15.1%3.2%
December 20259973.7%21.2%1.0%
January 20266973.9%15.9%8.7%
February 20265768.4%14.0%8.8%
March 20268878.4%13.6%3.4%
April 202611380.5%15.9%0.0%
May 202612579.2%12.0%0.0%
June 202610471.2%25.0%1.9%

What drove CHS to BOS delay minutes?

Late aircraft was the largest recorded CHS-to-BOS delay category, accounting for 36.0% of 26,114 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.9%
Late aircraft36.0%
National airspace34.6%
Weather1.4%
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.