Best Time to Fly CHS to BWI: On-Time Stats by Hour & Airline
Charleston AFB/International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
1,233 flights were scheduled from Charleston (CHS) to Baltimore (BWI) in the last 12 months, and 82.2% of those that flew arrived on time, 4.6 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
January has been the best month (90% on time) and Monday the weakest day of the week (80%).
1.5% of flights were cancelled, versus 1.8% nationally.
CHS to BWI 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 |
|---|---|---|---|---|
| Southwest Airlines | 82.3% | 51 min | 1.6% | 1,229 |
| Spirit Airlines | Limited data | 4 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly CHS to BWI
On-time arrival % by scheduled departure hour (local time), 2,511 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 5 | |
| 6am–7am | 91.1% | 4.3% | 47 |
| 7am–8am | 92.1% | 1.5% | 478 |
| 8am–9am | 95.4% | 0.5% | 198 |
| 9am–10am | Limited data | 2 | |
| 10am–11am | 86.3% | 1.1% | 184 |
| 11am–12pm | 94.0% | 1.9% | 154 |
| 12pm–1pm | 82.9% | 1.4% | 71 |
| 1pm–2pm | 87.3% | 0.0% | 206 |
| 2pm–3pm | 84.2% | 1.9% | 103 |
| 3pm–4pm | 71.8% | 0.8% | 125 |
| 4pm–5pm | 69.0% | 1.8% | 164 |
| 5pm–6pm | 76.7% | 3.0% | 133 |
| 6pm–7pm | 79.3% | 1.4% | 285 |
| 7pm–8pm | 68.3% | 3.3% | 213 |
| 8pm–9pm | 69.2% | 4.9% | 142 |
| 9pm–10pm | Limited data | 1 | |
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 BWI
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) | 85.1% | +0.3 pts | 0.0% | 47 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.3% | -8.5 pts | 2.1% | 95 |
| Summer peak (Jun 15 - Aug 15) | 76.7% | -8.1 pts | 4.0% | 453 |
| All other days | 84.8% | — | 1.2% | 1,916 |
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).