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.
IAD → IND
Dulles to Indianapolis: 1,022 nonstop flights a year
On time (12 months)
83%
Cancelled
1.1%
avg delay 15 min
Best time to leave
Before 9 AM
92% on time vs 73% 3 to 6 PM
Most reliable airline
Republic
82% chance on time
Lowest nonstop fare seen in the next two months: $209 (United 3561 on 2026-10-21). 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 · Republic 3561 · sold as American Eagle, Delta Connection or United Express
8:26 AM → 10:22 AM1h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Republic 3588; its record covers all of them.
91%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.9%
- Avg arrival delay
- 5 min
- Arrived on time 92% of the time (333 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 73%).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Strong track record · 333 flights
Find 8:26 AM flight fares Opens this date on Aviasales#2 · Republic 3543 · sold as American Eagle, Delta Connection or United Express
12:45 PM → 2:41 PM1h 51m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.3%
- Avg arrival delay
- 12 min
- Arrived on time 82% of the time (297 flights, Jun 2025 to May 2026).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Strong track record · 297 flights
Find 12:45 PM flight fares Opens this date on Aviasales#3 · Republic 3635 · sold as American Eagle, Delta Connection or United Express
10:05 PM → 11:59 PM1h 52m nonstop
Local times, typical schedule. Last flown 2026-05-19.
74%
chance on time
- On time (history)
- 74%
- Cancelled
- 1.3%
- Avg arrival delay
- 50 min
- Arrived on time 74% of the time (76 flights, Jun 2025 to May 2026).
- Departs outside IAD's trouble window (1 PM to 7 PM, when 75% of its 63 ground stops and delay programs started).
Moderate track record · 76 flights
Find 10:05 PM flight fares Opens this date on Aviasales#4 · Republic 3585 · sold as American Eagle, Delta Connection or United Express
5:23 PM → 7:16 PM1h 53m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 72%
- Cancelled
- 2.5%
- Avg arrival delay
- 30 min
- Arrived on time 72% of the time (159 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 73% on time; Before 9 AM: 92%).
- Departs inside IAD's trouble window: 75% of its 63 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 159 flights
Find 5:23 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)82%
973 flights · 83% on time as flown · 1.1% cancel
- United Airlines77%
49 flights · 73% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
336 flights · avg delay 5 min
- Noon to 3 PM82%
361 flights · avg delay 12 min
- 3 to 6 PM73%
245 flights · avg delay 24 min
- After 9 PM74%
79 flights · avg delay 48 min
Best day: Wednesday (88%). Worst: Friday (84%).
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