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.
ONT → CLT
Ontario to Charlotte: 327 nonstop flights a year
On time (12 months)
84%
Cancelled
0.9%
avg delay 18 min
Best time to leave
No clear winner
Most reliable airline
American
83% chance on time
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 · American 987
10:26 PM → 5:56 AM4h 30m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 89% of the time (38 flights, Jun 2025 to May 2026).
- Never cancelled in 38 scheduled flights.
- Short track record (38 flights), so its score leans on the airline's record at this hour.
Limited track record · 38 flights
Find American 987 fares Opens this date on Aviasales#2 · American 2237
10:00 PM → 5:35 AM4h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find American 2237 fares Opens this date on Aviasales#3 · American 1920
10:36 PM → 6:03 AM4h 27m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 1.6%
- Avg arrival delay
- 7 min
- Arrived on time 85% of the time (120 flights, Jun 2025 to May 2026).
Moderate track record · 120 flights
Find American 1920 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines83%
327 flights · 84% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- After 9 PM84%
327 flights · avg delay 18 min
Best day: Monday (89%). Worst: Saturday (81%).
Smarter routing
Nearby airports that run more on time
SNA → CLT 86% chance on time
John Wayne Orange County International Airport to Charlotte Douglas International Airport · 364 flights a year · 30 mi from your airports · yours: 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