Best Time to Fly CHS to BOS: On-Time Stats by Hour & Airline
Charleston AFB/International → Logan International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.9% of Charleston (CHS) to Boston (BOS) flights arrived on time (1,141 scheduled flights). That is 6.7 points below the national average of 77.6%.
Among 3 airlines, Republic Airways led with 83.7% on time and Delta Air Lines was last with 67.4%.
Over 24 months, Wednesday was the most reliable day (77% on time) and July the worst month (57%).
The cancellation rate was 2.6% (US average 1.8%).
CHS to BOS 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% | 90 min | 2.0% | 100 |
| JetBlue | 70.9% | 79 min | 2.1% | 662 |
| Delta Air Lines | 67.4% | 104 min | 3.7% | 379 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CHS to BOS
On-time arrival % by scheduled departure hour (local time), 2,387 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 1 | |
| 6am–7am | 91.6% | 1.3% | 157 |
| 7am–8am | Limited data | 22 | |
| 8am–9am | 87.1% | 0.0% | 62 |
| 9am–10am | 89.2% | 0.0% | 102 |
| 10am–11am | 84.0% | 1.6% | 121 |
| 11am–12pm | 82.4% | 2.0% | 152 |
| 12pm–1pm | 73.2% | 4.7% | 235 |
| 1pm–2pm | 63.8% | 3.5% | 226 |
| 2pm–3pm | 67.0% | 1.0% | 96 |
| 3pm–4pm | 66.8% | 1.8% | 273 |
| 4pm–5pm | 67.9% | 2.3% | 485 |
| 5pm–6pm | 57.8% | 4.2% | 48 |
| 6pm–7pm | 70.3% | 3.9% | 77 |
| 7pm–8pm | 64.6% | 1.7% | 115 |
| 8pm–9pm | 64.9% | 1.9% | 212 |
| 9pm–10pm | Limited data | 3 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on CHS to BOS
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) | 78.4% | +3.9 pts | 1.9% | 52 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.0% | -0.6 pts | 0.8% | 120 |
| Summer peak (Jun 15 - Aug 15) | 60.9% | -13.6 pts | 4.4% | 411 |
| All other days | 74.5% | — | 1.9% | 1,804 |
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).