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.
BNA → IAD
Nashville to Dulles: 1,038 nonstop flights a year
On time (12 months)
78%
Cancelled
1.2%
avg delay 19 min
Best time to leave
9 AM to noon
88% on time vs 68% 6 to 9 PM
Most reliable airline
Allegiant
80% chance on time
Lowest nonstop fare seen in the next two months: $215 (United 1709 on 2026-10-23). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1709
8:30 AM → 11:20 AM1h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 2.6%
- Avg arrival delay
- 10 min
- Arrived on time 88% of the time (300 flights, Jun 2025 to May 2026).
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 ground stops and delay programs started).
Strong track record · 300 flights
Find United 1709 fares Opens this date on Aviasales#2 · United 2125
1:25 PM → 4:15 PM1h 49m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.6%
- Avg arrival delay
- 23 min
- Arrived on time 77% of the time (335 flights, Jun 2025 to May 2026).
- Departs inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 335 flights
Find United 2125 fares Opens this date on Aviasales#3 · United 1460
6:35 PM → 9:20 PM1h 50m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.0%
- Avg arrival delay
- 40 min
- Arrived on time 68% of the time (104 flights, Jun 2025 to May 2026).
- Never cancelled in 104 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 68% on time; 9 AM to noon: 88%).
- Departs inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 104 flights
Find United 1460 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Allegiant Air80%
40 flights · 85% on time as flown · 0.9% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)79%
37 flights · 84% on time as flown · 0.9% cancel
- United Airlines77%
960 flights · 78% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
353 flights · avg delay 9 min
- 9 AM to noon88%
34 flights · avg delay 10 min
- Noon to 3 PM77%
360 flights · avg delay 23 min
- 6 to 9 PM68%
291 flights · avg delay 28 min
Best day: Wednesday (85%). Worst: Sunday (76%).
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