Route
CHS → BOS
Charleston International Airport Boston Logan International Airport
818 miles
Return route BOS → CHS →
How punctual is this route?
- On-time arrivals
- 69.5%
- Less than 15 minutes late
- Cancelled
- 3.1%
- Of scheduled flights
- Average delay when late
- 96 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,150
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 35%
- Airline (crew, maintenance, cleaning) 34%
- Air traffic control & airport 29%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 50.5% | 97 |
| October 2025 | 52.5% | 99 |
| November 2025 | 77.8% | 93 |
| December 2025 | 74.5% | 99 |
| January 2026 | 81.0% | 69 |
| February 2026 | 75.0% | 57 |
| March 2026 | 81.2% | 88 |
| April 2026 | 80.5% | 113 |
| May 2026 | 79.2% | 125 |
| June 2026 | 72.5% | 104 |
| July 2026 | 54.8% | 103 |
| August 2026 | 58.3% | 103 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| JetBlue Airways | 670 | 69.4% | 2.8% | 84 min |
| Delta Air Lines | 370 | 65.4% | 3.8% | 115 min |
| Republic Airways | 110 | 84.1% | 2.7% | 93 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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