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Route on-time record

BOS to CHS: most on-time flights and the best time to fly

Boston (Boston Logan International Airport) to Charleston (Charleston International Airport). 1,120 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.7% were cancelled. The most reliable flight number was Republic 5670 at 8:52 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

BOS → CHS

Boston to Charleston: 1,120 nonstop flights a year

On time (12 months)

76%

Cancelled

1.7%

avg delay 17 min

Best time to leave

Before 9 AM

84% on time vs 54% 3 to 6 PM

Most reliable airline

Republic

80% chance on time

Check BOS to CHS fares

Lowest nonstop fare seen in the next two months: $266 (JetBlue 567 on 2026-11-05). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · Republic 5670 · sold as American Eagle, Delta Connection or United Express

    8:52 AM → 11:37 AM2h 45m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    86%

    chance on time

    On time (history)
    94%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 94% of the time (17 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 54%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
    • Short track record (17 flights), so its score leans on the airline's record at this hour.

    Limited track record · 17 flights

    Find 8:52 AM flight fares Opens this date on Aviasales

  2. #2 · JetBlue 267

    7:00 AM → 9:40 AM2h 31m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    80%

    chance on time

    On time (history)
    82%
    Cancelled
    1.9%
    Avg arrival delay
    13 min
    • Arrived on time 82% of the time (356 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 54%).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).

    Strong track record · 356 flights

    Find JetBlue 267 fares Opens this date on Aviasales

  3. #3 · JetBlue 2367

    1:05 PM → 3:37 PM2h 32m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    78%

    chance on time

    On time (history)
    83%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 83% of the time (41 flights, Jun 2025 to May 2026).
    • Never cancelled in 41 scheduled flights.
    • Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
    • Short track record (41 flights), so its score leans on the airline's record at this hour.

    Limited track record · 41 flights

    Find JetBlue 2367 fares Opens this date on Aviasales

  4. #4 · Delta 2785

    12:50 PM → 3:26 PM2h 33m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    76%

    chance on time

    On time (history)
    78%
    Cancelled
    2.1%
    Avg arrival delay
    16 min
    • Arrived on time 78% of the time (328 flights, Jun 2025 to May 2026).
    • Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 328 flights

    Find Delta 2785 fares Opens this date on Aviasales

  5. #5 · JetBlue 1137

    1:30 PM → 4:02 PM2h 32m nonstop

    Local times, typical schedule. Last flown 2026-04-13.

    75%

    chance on time

    On time (history)
    70%
    Cancelled
    0.0%
    Avg arrival delay
    19 min
    • Arrived on time 70% of the time (10 flights, Jun 2025 to May 2026).
    • Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
    • 59% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (10 flights), so its score leans on the airline's record at this hour.

    Limited track record · 10 flights

    Find JetBlue 1137 fares Opens this date on Aviasales

  6. #6 · JetBlue 2467

    6:40 PM → 9:23 PM2h 42m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    54%

    chance on time

    On time (history)
    52%
    Cancelled
    2.5%
    Avg arrival delay
    36 min
    • Arrived on time 52% of the time (153 flights, Jun 2025 to May 2026).
    • Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
    • 53% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 153 flights

    Find JetBlue 2467 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)80%

    82 flights · 83% on time as flown · 1.1% cancel

  • Delta Air Lines76%

    396 flights · 77% on time as flown · 1.9% cancel

  • JetBlue72%

    642 flights · 74% on time as flown · 1.7% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM84%

    262 flights · avg delay 12 min

  • 9 AM to noon82%

    255 flights · avg delay 12 min

  • Noon to 3 PM78%

    371 flights · avg delay 15 min

  • 3 to 6 PM54%

    178 flights · avg delay 34 min

  • 6 to 9 PM63%

    54 flights · avg delay 32 min

Best day: Tuesday (81%). Worst: Friday (71%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
77
F
78
M
80
A
79
M
81
J
76
J
69
A
72
S
71
O
80
N
78
D
70

What delays this route

  • Airline (crew, maintenance, boarding)37%
  • Late-arriving aircraft37%
  • Air traffic control and airport volume24%
  • Severe weather3%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from BOS to CHS…

BOS to CHS questions

What time of day is best to fly BOS to CHS?
Before 9 AM: 84% of flights arrived on time, against 54% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from BOS to CHS?
Republic, with a season-adjusted 80% chance of operating and arriving on time over 82 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on BOS to CHS?
July (69% on time); the best was May (81%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from BOS

Live status: FAA delays and ground stops