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.
ORF → IAD
Norfolk to Dulles: 623 nonstop flights a year
On time (12 months)
89%
Cancelled
3.0%
avg delay 10 min
Best time to leave
9 AM to noon
92% on time vs 85% noon to 3 PM
Most reliable airline
United
90% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
4 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 1h 15m
10:27 AM → 11:42 AM
92%
arrive on time
93% on time · 1.2% cancel10:27 AM ORF → 11:42 AM IAD1h 15m
United 1357
Boeing 737-700 · 24–28 yrs oldFind United 1357 fares Opens this date on Aviasales#2 · Nonstop · 1h 17m
10:37 AM → 11:54 AM
92%
arrive on time
93% on time · 1.2% cancel10:37 AM ORF → 11:54 AM IAD1h 17m
United 529
Boeing 737-900ER · 5–17 yrs oldFind United 529 fares Opens this date on Aviasales#3 · Nonstop · 1h 16m
6:15 AM → 7:31 AM
91%
arrive on time
93% on time · 1.2% cancel6:15 AM ORF → 7:31 AM IAD1h 16m
United 1524 · also flew as 2138, 1093
Airbus A319 · 3–29 yrs oldFind United 1524 fares Opens this date on Aviasales#4 · Nonstop · 1h 03m
10:45 AM → 11:48 AM
90%
arrive on time
91% on time · 1.2% cancel10:45 AM ORF → 11:48 AM IAD1h 03m
United 2066
Boeing 737 MAX 9 · 1–26 yrs oldFind United 2066 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.
- United Airlines90%
273 flights · 93% on time as flown · 1.3% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)83%
350 flights · 86% on time as flown · 4.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
267 flights · avg delay 9 min
- 9 AM to noon92%
110 flights · avg delay 6 min
- Noon to 3 PM85%
73 flights · avg delay 11 min
- 6 to 9 PM86%
173 flights · avg delay 12 min
Best day: Wednesday (92%). Worst: Monday (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