Reliable Flight Search
BetaThe insider way to pick a flight: on-time records, the odds each connection is made, legroom and the age of the planes that actually fly the route. Things airline sites and the big booking sites don’t show you. US airlines and airports.
IAD → CHS
Dulles to Charleston: 761 nonstop flights a year
On time (12 months)
86%
Cancelled
1.1%
avg delay 11 min
Best time to leave
Before 9 AM
94% on time vs 67% 3 to 6 PM
Most reliable airline
United
88% chance on time
Lowest nonstop fare seen in the next two months: $122 (United 1108 on 2026-10-19). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
5 nonstop, 12 with 1 connection · ranked by overall best · published legroom for 0 of 17
Top pick#1 · Nonstop · 1h 48m
8:35 AM → 10:23 AM
85
score
93%
arrive on time
93% on time · 0.3% cancel8:35 AM IAD → 10:23 AM CHS1h 48m
United 1108
Boeing 737 MAX 8 · 1–28 yrs oldLegroom: not published for this aircraft and cabin yetFind United 1108 fares Opens this date on Aviasales#2 · Nonstop · 1h 52m
12:35 PM → 2:27 PM
66
score
83%
arrive on time
84% on time · 0.6% cancel12:35 PM IAD → 2:27 PM CHS1h 52m
Republic 3487 · sold as American Eagle, Delta Connection or United Express
Embraer E175 · 2–11 yrs oldLegroom: not published for this aircraft and cabin yetFind 12:35 PM flight fares Opens this date on Aviasales#3 · Nonstop · 1h 48m
1:05 PM → 2:53 PM
63
score
89%
arrive on time
89% on time · 0.6% cancel1:05 PM IAD → 2:53 PM CHS1h 48m
United 325
Boeing 737-700 · 22–28 yrs oldLegroom: not published for this aircraft and cabin yetFind United 325 fares Opens this date on Aviasales#4 · Nonstop · 1h 44m
10:15 PM → 11:59 PM
56
score
84%
arrive on time
84% on time · 0.8% cancel10:15 PM IAD → 11:59 PM CHS1h 44m
United 2440 · also flew as 336
Airbus A319 · 4–29 yrs oldLegroom: not published for this aircraft and cabin yetFind United 2440 fares Opens this date on Aviasales#5 · Nonstop · 1h 50m
5:10 PM → 7:00 PM
52
score
75%
arrive on time
76% on time · 1.5% cancel5:10 PM IAD → 7:00 PM CHS1h 50m
Republic 3468 · sold as American Eagle, Delta Connection or United Express
Embraer E175 or E170 · 2–21 yrs oldLegroom: not published for this aircraft and cabin yetFind 5:10 PM flight fares Opens this date on Aviasales#6 · 1 connection · 4h 27m · one ticket (American)
8:15 AM → 12:42 PM
48
score
91%
connections made
82%
arrive on time
85% on time · 2.4% cancel8:15 AM IAD → 9:53 AM CLT1h 38m
Republic 3656 · sold as American Eagle
Embraer E175 · 2–11 yrs oldLegroom: not published for this aircraft and cabin yetConnect in CLT · 1h 32m · 96% chance to make it · same ticket: the airline rebooks you if you miss it91% on time · 2.8% cancel11:25 AM CLT → 12:42 PM CHS1h 17m
Envoy 3752 · sold as American Eagle
Embraer E175 · 5–11 yrs oldLegroom: not published for this aircraft and cabin yetFind this American trip Look for Republic 3656 + Envoy 3752 on Aviasales#7 · 1 connection · 4h 07m · one ticket (American)
6:20 AM → 10:27 AM
35
score
91%
connections made
80%
arrive on time
90% on time · 1.3% cancel6:20 AM IAD → 7:47 AM CLT1h 27m
American 1216 · also flew as 2457
Airbus A319 · 11–27 yrs oldLegroom: not published for this aircraft and cabin yetConnect in CLT · 1h 13m · 93% chance to make it · same ticket: the airline rebooks you if you miss it89% on time · 1.7% cancel9:00 AM CLT → 10:27 AM CHS1h 27m
PSA 5150 · sold as American Eagle
Bombardier CRJ900 · 10–12 yrs oldLegroom: not published for this aircraft and cabin yetFind this American trip Look for American 1216 + PSA 5150 on Aviasales#8 · 1 connection · 6h 22m · one ticket (American)
6:20 AM → 12:42 PM
34
score
95%
connections made
87%
arrive on time
90% on time · 1.3% cancel6:20 AM IAD → 7:47 AM CLT1h 27m
American 1216 · also flew as 2457
Airbus A319 · 11–27 yrs oldLegroom: not published for this aircraft and cabin yetConnect in CLT · 3h 38m · 99% chance to make it · same ticket: the airline rebooks you if you miss it91% on time · 2.8% cancel11:25 AM CLT → 12:42 PM CHS1h 17m
Envoy 3752 · sold as American Eagle
Embraer E175 · 5–11 yrs oldLegroom: not published for this aircraft and cabin yetFind this American trip Look for American 1216 + Envoy 3752 on Aviasales#9 · 1 connection · 5h 27m · one ticket (American)
5:00 AM → 10:27 AM
34
score
94%
connections made
84%
arrive on time
87% on time · 1.5% cancel5:00 AM IAD → 6:27 AM CLT1h 27m
American 2643
Airbus A319 · 25–27 yrs oldLegroom: not published for this aircraft and cabin yetConnect in CLT · 2h 33m · 97% chance to make it · same ticket: the airline rebooks you if you miss it89% on time · 1.7% cancel9:00 AM CLT → 10:27 AM CHS1h 27m
PSA 5150 · sold as American Eagle
Bombardier CRJ900 · 10–12 yrs oldLegroom: not published for this aircraft and cabin yetFind this American trip Look for American 2643 + PSA 5150 on Aviasales#10 · 1 connection · 4h 50m · one ticket (American)
9:20 AM → 2:10 PM
33
score
92%
connections made
81%
arrive on time
90% on time · 2.4% cancel9:20 AM IAD → 10:56 AM CLT1h 36m
PSA 5219 · sold as American Eagle · also flew as 5266, 5203
Bombardier CRJ900 · 7–23 yrs oldLegroom: not published for this aircraft and cabin yetConnect in CLT · 2h 04m · 96% chance to make it · same ticket: the airline rebooks you if you miss it88% on time · 1.2% cancel1:00 PM CLT → 2:10 PM CHS1h 10m
American 2299
Airbus A320 · 16–27 yrs oldLegroom: not published for this aircraft and cabin yetFind this American trip Look for PSA 5219 + American 2299 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. Legroom is the seat pitch the airline or a seat-map source publishes for that aircraft and cabin; we never estimate it, and seat maps change, so check the airline’s seat map when you book.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines88%
463 flights · 90% on time as flown · 0.9% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)82%
298 flights · 81% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
281 flights · avg delay 4 min
- Noon to 3 PM86%
360 flights · avg delay 13 min
- 3 to 6 PM67%
88 flights · avg delay 22 min
- After 9 PM81%
32 flights · avg delay 14 min
Best day: Wednesday (91%). Worst: Friday (86%).
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