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Route on-time record

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

Charleston (Charleston International Airport) to Dulles (Washington Dulles International Airport). 759 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was United 1858 at 10:00 AM.

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

CHS → IAD

Charleston to Dulles: 759 nonstop flights a year

On time (12 months)

85%

Cancelled

1.3%

avg delay 14 min

Best time to leave

9 AM to noon

94% on time vs 75% 6 to 9 PM

Most reliable airline

United

86% chance on time

Check CHS to IAD fares

Lowest nonstop fare seen in the next two months: $230 (United 3413 on 2026-10-27). 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 · United 1858

    10:00 AM → 11:37 AM1h 37m nonstop

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

    94%

    chance on time

    On time (history)
    95%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 95% of the time (243 flights, Jun 2025 to May 2026).
    • Never cancelled in 243 scheduled flights.
    • Leaves in this route's most on-time window (9 AM to noon: 94% on time; 6 to 9 PM: 75%).

    Strong track record · 243 flights

    Find United 1858 fares Opens this date on Aviasales

  2. #2 · United 1238

    6:00 AM → 7:30 AM1h 30m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1524; its record covers all of them.

    90%

    chance on time

    On time (history)
    94%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 94% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Short track record (33 flights), so its score leans on the airline's record at this hour.

    Limited track record · 33 flights

    Find United 1238 fares Opens this date on Aviasales

  3. #3 · United 1905

    2:48 PM → 4:25 PM1h 37m nonstop

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

    82%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 88% of the time (17 flights, Jun 2025 to May 2026).
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (17 flights), so its score leans on the airline's record at this hour.

    Limited track record · 17 flights

    Find United 1905 fares Opens this date on Aviasales

  4. #4 · United 780

    2:58 PM → 4:35 PM1h 37m nonstop

    Local times, typical schedule. Last flown 2026-04-29.

    78%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    22 min
    • Arrived on time 75% of the time (56 flights, Jun 2025 to May 2026).
    • Never cancelled in 56 scheduled flights.
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
    • 86% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 56 flights

    Find United 780 fares Opens this date on Aviasales

  5. #5 · Republic 3401 · sold as American Eagle, Delta Connection or United Express

    2:47 PM → 4:33 PM1h 46m nonstop

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

    78%

    chance on time

    On time (history)
    80%
    Cancelled
    1.4%
    Avg arrival delay
    16 min
    • Arrived on time 80% of the time (137 flights, Jun 2025 to May 2026).
    • Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 137 flights

    Find 2:47 PM flight fares Opens this date on Aviasales

  6. #6 · Republic 3635 · sold as American Eagle, Delta Connection or United Express

    7:47 PM → 9:25 PM1h 38m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    75%

    chance on time

    On time (history)
    73%
    Cancelled
    4.2%
    Avg arrival delay
    29 min
    • Arrived on time 73% of the time (22 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 75% on time; 9 AM to noon: 94%).
    • 59% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (22 flights), so its score leans on the airline's record at this hour.

    Limited track record · 22 flights

    Find 7:47 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines86%

    459 flights · 87% on time as flown · 0.8% cancel

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)81%

    300 flights · 81% on time as flown · 2.0% cancel

On time by departure time

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

  • Before 9 AM94%

    35 flights · avg delay 2 min

  • 9 AM to noon94%

    281 flights · avg delay 6 min

  • Noon to 3 PM78%

    360 flights · avg delay 19 min

  • 6 to 9 PM75%

    83 flights · avg delay 19 min

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
80
F
92
M
85
A
89
M
90
J
93
J
86
A
87
S
90
O
94
N
91
D
84

What delays this route

  • Late-arriving aircraft72%
  • Air traffic control and airport volume17%
  • Airline (crew, maintenance, boarding)10%
  • Severe weather2%

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

CHS to IAD questions

What time of day is best to fly CHS to IAD?
9 AM to noon: 94% of flights arrived on time, against 75% for departures 6 to 9 PM.
Which airline is most on time from CHS to IAD?
United, with a season-adjusted 86% chance of operating and arriving on time over 459 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 CHS to IAD?
January (80% on time); the best was October (94%), 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 CHS

Live status: FAA delays and ground stops