CHS to BOS flight delays & on-time performance
Nonstop flights from Charleston International Airport to Boston Logan International Airport · 818 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CHS or BOS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Charleston (CHS) to Boston (BOS) arrived on time 71% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.6% were cancelled, and 13% arrived an hour or more late.
- Republic Airways was the most punctual airline here (84% on time); Delta Air Lines was the least (67%).
- Departures scheduled around 6am did best (97% on time); around 1pm did worst (54%).
- Saturday was the most reliable day to fly (80% on time) and Thursday the least (65%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (33%).
Which airline is most on time from CHS to BOS?
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% | 2.0% | 16 min | 9.2% | 100 |
| JetBlue | 71% | 2.1% | 24 min | 13.6% | 662 |
| Delta Air Lines | 67% | 3.7% | 35 min | 14.2% | 379 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am97%37 flights
- 7am82%22 flights
- 8am89%46 flights
- 9am91%33 flights
- 10am91%78 flights
- 11am80%75 flights
- 12pm73%136 flights
- 1pm54%118 flights
- 2pm55%31 flights
- 3pm65%135 flights
- 4pm67%258 flights
- 5pm58%29 flights
- 6pm59%31 flights
- 7pm72%47 flights
- 8pm64%63 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%5.0% cancelled
- Tuesday70%3.6% cancelled
- Wednesday70%0.7% cancelled
- Thursday65%0.6% cancelled
- Friday72%1.9% cancelled
- Saturday80%3.2% cancelled
- Sunday68%3.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)33%
- Late-arriving aircraft33%
- Air traffic control & airport congestion32%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)43%
- Extreme weather37%
- Air traffic control & airport congestion20%
- Security0%
CHS to BOS: common questions
- How often are CHS to BOS flights on time?
- 71% 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 Charleston to Boston cancelled?
- 2.6% of scheduled flights were cancelled (30 of 1,141).
- How long are typical delays?
- Across all flights the average arrival delay was 27 min (early arrivals count as zero). Flights that were late arrived 89 min behind schedule on average, and 13.4% of flights were an hour or more late.
- How long is taxi time at CHS?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOS to CHS — 78% on time
More flights from Charleston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: CHS → BOS, nonstop flights by US airlines that report to the DOT. How we calculate this.