Best Time to Fly BOS to CHS: On-Time Stats by Hour & Airline
Logan International → Charleston AFB/International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 77.7% of Boston (BOS) to Charleston (CHS) flights arrived on time (1,140 scheduled flights). That is in line with the national average of 77.6%.
Among 3 airlines, Republic Airways led with 83.7% on time and JetBlue was last with 76.3%.
Over 24 months, Wednesday was the most reliable day (82% on time) and December the worst month (65%).
The cancellation rate was 2.3% (US average 1.8%).
BOS to CHS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 83.7% | 54 min | 1.0% | 99 |
| Delta Air Lines | 78.4% | 74 min | 3.2% | 379 |
| JetBlue | 76.3% | 65 min | 2.0% | 662 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to CHS
On-time arrival % by scheduled departure hour (local time), 2,385 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 90.3% | 1.9% | 158 |
| 7am–8am | 79.0% | 2.4% | 127 |
| 8am–9am | 86.6% | 2.4% | 208 |
| 9am–10am | 78.0% | 2.3% | 303 |
| 10am–11am | 78.0% | 1.8% | 111 |
| 11am–12pm | 81.5% | 1.5% | 133 |
| 12pm–1pm | 77.6% | 2.2% | 508 |
| 1pm–2pm | 83.2% | 0.6% | 174 |
| 2pm–3pm | 72.9% | 2.0% | 49 |
| 3pm–4pm | 68.2% | 0.9% | 111 |
| 4pm–5pm | 62.7% | 2.7% | 148 |
| 5pm–6pm | 55.7% | 2.1% | 191 |
| 6pm–7pm | 66.1% | 0.0% | 110 |
| 7pm–8pm | 66.7% | 0.0% | 33 |
| 8pm–9pm | Limited data | 21 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS to CHS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 78.0% | +0.3 pts | 2.0% | 51 |
| Christmas & New Year (Dec 20 - Jan 3) | 71.7% | -6.0 pts | 0.8% | 121 |
| Summer peak (Jun 15 - Aug 15) | 70.0% | -7.7 pts | 3.9% | 411 |
| All other days | 77.7% | — | 1.6% | 1,802 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).