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 → CVG
Dulles to Cincinnati / Covington: 536 nonstop flights a year
On time (12 months)
82%
Cancelled
0.9%
avg delay 13 min
Best time to leave
Before 9 AM
87% on time vs 78% noon to 3 PM
Most reliable airline
Republic
81% chance on time
Lowest nonstop fare seen in the next two months: $330 (United 4544 on 2026-10-30). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
1 nonstop · ranked by overall best · published legroom for 1 of 1
Fares seen on this date: nonstop from 330 · any route from 140 (recent searches, one way, per person; each card opens the live price)
Top pick#1 · Nonstop · 1h 42m
10:17 PM → 11:59 PM
50
score
price
live on Aviasales
82%
arrive on time
83% on time · 1.1% cancel10:17 PM IAD → 11:59 PM CVG1h 42m
Republic 3521 · sold as American Eagle, Delta Connection or United Express · also flew as 3671
Embraer E175 · 2–11 yrs oldLegroom 30–31 in · 18–19.3 in wide · Main CabinFind 10:17 PM flight fares Opens this date 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.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)81%
518 flights · 82% on time as flown · 1.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
172 flights · avg delay 9 min
- Noon to 3 PM78%
61 flights · avg delay 13 min
- 3 to 6 PM80%
164 flights · avg delay 13 min
- After 9 PM79%
139 flights · avg delay 20 min
Best day: Wednesday (91%). Worst: Sunday (83%).
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