BOS to CHS flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Charleston International Airport · 818 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or CHS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Charleston (CHS) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 2.3% were cancelled, and 9% arrived an hour or more late.
- Republic Airways was the most punctual airline here (84% on time); JetBlue was the least (76%).
- Departures scheduled around 6am did best (90% on time); around 5pm did worst (56%).
- Tuesday was the most reliable day to fly (85% on time) and Sunday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (39%).
Which airline is most on time from BOS to CHS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 84% | 1.0% | 10 min | 7.1% | 99 |
| Delta Air Lines | 78% | 3.2% | 17 min | 8.5% | 379 |
| JetBlue | 76% | 2.0% | 16 min | 9.3% | 662 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am90%64 flights
- 7am81%79 flights
- 8am85%113 flights
- 9am80%174 flights
- 10am88%40 flights
- 11am88%86 flights
- 12pm75%251 flights
- 1pm83%96 flights
- 2pm71%22 flights
- 3pm68%39 flights
- 4pm62%70 flights
- 5pm56%52 flights
- 6pm62%53 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%5.0% cancelled
- Tuesday85%2.2% cancelled
- Wednesday82%1.4% cancelled
- Thursday75%0.6% cancelled
- Friday77%1.9% cancelled
- Saturday77%2.1% cancelled
- Sunday74%2.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft39%
- Airline (crew, maintenance, cleaning, fueling)35%
- Air traffic control & airport congestion22%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather42%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion19%
- Security0%
BOS to CHS: common questions
- How often are BOS to CHS flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Boston to Charleston cancelled?
- 2.3% of scheduled flights were cancelled (26 of 1,140).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 67 min behind schedule on average, and 8.8% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: CHS to BOS — 71% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → CHS, nonstop flights by US airlines that report to the DOT. How we calculate this.