Route · BOS → CHS · 2020–2025 BTS data
Boston to Charleston
The BOS–CHS corridor (Boston, MA → Charleston, SC) runs behind the national average, served by 17 carriers across roughly 818 miles.
Data updated 2026-06-13
- 78.5%
- On-time
- -0.5 pts
- vs US avg
- 70 min
- Delay when late
- 5,873
- Flights
Cancelled
1.5%
Best Month
Jun 2024 85%
Worst Month
Dec 2025 62%
Distance
818 mi
Carriers
17
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 99 | 38 | 0 | 0 | DL,YX,B6 |
| Nov 2025 | 93 | 24 | 3 | 1 | DL,B6,YX |
| Oct 2025 | 99 | 16 | 0 | 0 | B6,YX,DL |
| Sep 2025 | 98 | 23 | 0 | 0 | DL,B6 |
| Aug 2025 | 94 | 20 | 2 | 0 | B6,DL |
| Jul 2025 | 93 | 28 | 2 | 1 | B6,DL |
| Jun 2025 | 94 | 30 | 0 | 1 | B6,DL |
| May 2025 | 120 | 26 | 1 | 0 | B6,DL,NK |
| Apr 2025 | 151 | 32 | 0 | 1 | DL,NK,YX,B6 |
| Mar 2025 | 121 | 28 | 0 | 0 | B6,YX,DL |
| Feb 2025 | 79 | 19 | 5 | 0 | B6,YX,DL |
| Jan 2025 | 73 | 15 | 4 | 0 | B6,YX,DL |
| Dec 2024 | 92 | 29 | 1 | 0 | B6,DL,YX |
| Nov 2024 | 74 | 16 | 0 | 0 | B6,DL |
| Oct 2024 | 96 | 16 | 0 | 0 | DL,NK,B6 |
| Sep 2024 | 120 | 29 | 0 | 2 | B6,DL,NK |
| Aug 2024 | 132 | 42 | 7 | 1 | B6,DL,NK |
| Jul 2024 | 121 | 34 | 6 | 0 | B6,DL,NK |
| Jun 2024 | 136 | 20 | 1 | 0 | B6,DL,NK |
| May 2024 | 150 | 32 | 0 | 2 | B6,DL,NK |
| Apr 2024 | 111 | 24 | 4 | 0 | B6,DL,NK |
| Mar 2024 | 93 | 15 | 0 | 0 | B6,DL |
| Feb 2024 | 73 | 11 | 0 | 0 | B6,DL |
| Jan 2024 | 62 | 14 | 1 | 1 | B6,DL |
Cancellation Rate
1.5%
37 of 2,474 flights
Diversion Rate
0.4%
10 of 2,474 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Origin airport →CHS - Charleston
Full on-time, delay-cause, and seasonal performance for Charleston, SC.
Destination airport →Compare the two airports
See BOS and CHS side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOS–CHS.
Routes with a similar on-time rate
What the Data Says About BOS to CHS
5,873 tracked flights put the BOS to CHS pairing (Boston to Charleston) at a 78.5% on-time rate, squarely in line with the wider network. Delays that do occur run 69.8 minutes on average. Across the 818-mile route and its 17 carriers, the trailing 24 months show 1.5% cancelled and 0.4% diverted (2,474 flights sampled).
The monthly split is wide on this route: Jun 2024 posted the strongest performance at 85% on-time, while Dec 2025 came in at just 62% - a 24-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from BOS to CHS? ▼
What is the cancellation rate for BOS to CHS? ▼
How far is the flight from BOS to CHS? ▼
When is the best time to fly from BOS to CHS? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.