ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
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
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.
Best trips
6 nonstop, 12 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 1h 37m
10:00 AM → 11:37 AM
94%
arrive on time
94% on time · 0.3% cancel10:00 AM CHS → 11:37 AM IAD1h 37m
United 1858
Airbus A319 or Boeing 737-700 · 3–28 yrs oldFind United 1858 fares Opens this date on Aviasales#2 · Nonstop · 1h 30m
6:00 AM → 7:30 AM
90%
arrive on time
91% on time · 0.7% cancel6:00 AM CHS → 7:30 AM IAD1h 30m
United 1238 · also flew as 1524
Airbus A319 · 4–28 yrs oldFind United 1238 fares Opens this date on Aviasales#3 · Nonstop · 1h 37m
2:48 PM → 4:25 PM
82%
arrive on time
83% on time · 0.7% cancel2:48 PM CHS → 4:25 PM IAD1h 37m
United 1905
Airbus A319 or A320 · 20–28 yrs oldFind United 1905 fares Opens this date on Aviasales#4 · Nonstop · 1h 37m
2:58 PM → 4:35 PM
78%
arrive on time
79% on time · 0.6% cancel2:58 PM CHS → 4:35 PM IAD1h 37m
United 780
Airbus A319 · 19–28 yrs oldFind United 780 fares Opens this date on Aviasales#5 · Nonstop · 1h 46m
2:47 PM → 4:33 PM
78%
arrive on time
79% on time · 1.7% cancel2:47 PM CHS → 4:33 PM IAD1h 46m
Republic 3401 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 1–11 yrs oldFind 2:47 PM flight fares Opens this date on Aviasales#6 · Nonstop · 1h 38m
7:47 PM → 9:25 PM
75%
arrive on time
77% on time · 2.3% cancel7:47 PM CHS → 9:25 PM IAD1h 38m
Republic 3635 · sold as American Eagle, Delta Connection or United Express
Embraer E175 or E170 · 2–21 yrs oldFind 7:47 PM flight fares Opens this date on Aviasales#7 · 1 connection · 3h 50m · one ticket (American)
5:00 AM → 8:50 AM
90%
connections made
81%
arrive on time
92% on time · 2.2% cancel5:00 AM CHS → 6:01 AM CLT1h 01m
American 3298 · also flew as 1731
Boeing 737-800 · 5–27 yrs oldConnect in CLT · 1h 19m · 95% chance to make it · same ticket: the airline rebooks you if you miss it89% on time · 2.9% cancel7:20 AM CLT → 8:50 AM IAD1h 30m
PSA 5219 · sold as American Eagle · also flew as 5266, 5194
Bombardier CRJ900 · 7–23 yrs oldFind this American trip Look for American 3298 + PSA 5219 on Aviasales#8 · 1 connection · 5h 00m · one ticket (American)
6:45 AM → 11:45 AM
93%
connections made
84%
arrive on time
90% on time · 1.4% cancel6:45 AM CHS → 7:54 AM CLT1h 09m
American 3235
Boeing 737-800 · 2–25 yrs oldConnect in CLT · 2h 19m · 96% chance to make it · same ticket: the airline rebooks you if you miss it90% on time · 2.3% cancel10:13 AM CLT → 11:45 AM IAD1h 32m
Republic 3543 · sold as American Eagle
Embraer E175 · 1–11 yrs oldFind this American trip Look for American 3235 + Republic 3543 on Aviasales#9 · 1 connection · 5h 10m · one ticket (American)
6:35 AM → 11:45 AM
93%
connections made
84%
arrive on time
93% on time · 0.7% cancel6:35 AM CHS → 7:48 AM CLT1h 13m
American 1721 · also flew as 960
Boeing 737-800 or Airbus A319 · 9–27 yrs oldConnect in CLT · 2h 25m · 96% chance to make it · same ticket: the airline rebooks you if you miss it90% on time · 2.3% cancel10:13 AM CLT → 11:45 AM IAD1h 32m
Republic 3543 · sold as American Eagle
Embraer E175 · 1–11 yrs oldFind this American trip Look for American 1721 + Republic 3543 on Aviasales#10 · 1 connection · 6h 45m · one ticket (American)
5:00 AM → 11:45 AM
95%
connections made
86%
arrive on time
92% on time · 2.2% cancel5:00 AM CHS → 6:01 AM CLT1h 01m
American 3298 · also flew as 1731
Boeing 737-800 · 5–27 yrs oldConnect in CLT · 4h 12m · 100% chance to make it · same ticket: the airline rebooks you if you miss it90% on time · 2.3% cancel10:13 AM CLT → 11:45 AM IAD1h 32m
Republic 3543 · sold as American Eagle
Embraer E175 · 1–11 yrs oldFind this American trip Look for American 3298 + Republic 3543 on Aviasales
Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.
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
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