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ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We 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.

CVG → IAD

Cincinnati / Covington to Dulles: 547 nonstop flights a year

On time (12 months)

86%

Cancelled

0.9%

avg delay 10 min

Best time to leave

Before 9 AM

93% on time vs 68% noon to 3 PM

Most reliable airline

Republic

85% chance on time

Check CVG to IAD fares

Lowest nonstop fare seen in the next two months: $341 (United 4388 on 2026-10-21). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Best trips

3 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 1h 28m

    6:00 AM → 7:28 AM

    91%

    arrive on time

    6:00 AM CVG → 7:28 AM IAD1h 28m

    United 379

    Airbus A319 or A320 · 20–28 yrs old
    91% on time · 0.8% cancel
    Find United 379 fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 34m

    6:00 AM → 7:34 AM

    90%

    arrive on time

    6:00 AM CVG → 7:34 AM IAD1h 34m

    Republic 3489 · sold as American Eagle, Delta Connection or United Express · also flew as 3695

    Embraer E175 · 2–11 yrs old
    90% on time · 0.7% cancel
    Find 6:00 AM flight fares Opens this date on Aviasales

  3. #3 · Nonstop · 1h 36m

    7:47 PM → 9:24 PM

    81%

    arrive on time

    7:47 PM CVG → 9:24 PM IAD1h 36m

    Republic 3493 · sold as American Eagle, Delta Connection or United Express

    Embraer E175 · 2–11 yrs old
    81% on time · 0.7% cancel
    Find 7:47 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.

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)85%

    530 flights · 86% on time as flown · 0.9% cancel

On time by departure time

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

  • Before 9 AM93%

    103 flights · avg delay 5 min

  • 9 AM to noon89%

    236 flights · avg delay 7 min

  • Noon to 3 PM68%

    61 flights · avg delay 25 min

  • 6 to 9 PM85%

    147 flights · avg delay 13 min

Best day: Wednesday (94%). Worst: Sunday (85%).

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