Route on-time record
ONT to CLT: most on-time flights and the best time to fly
Ontario (Ontario International Airport) to Charlotte (Charlotte Douglas International Airport). 327 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was American 987 at 10:26 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
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%
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)64%
- Late-arriving aircraft28%
- Air traffic control and airport volume8%
Share of delay minutes by the cause airlines report to the US DOT.
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
ONT to CLT questions
- Which airline is most on time from ONT to CLT?
- American, with a season-adjusted 83% chance of operating and arriving on time over 327 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on ONT to CLT?
- June (74% on time); the best was December (91%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from ONT
- CLT to ONT (return)
- ONT to PHX 83%
- ONT to DEN 79%
- ONT to SEA 86%
- ONT to LAS 78%
- ONT to DFW 78%
- ONT to SMF 86%
- ONT to OAK 87%
- ONT to SJC 86%
- ONT to SFO 69%
- ONT to SLC 91%
- ONT to ATL 90%
- ONT to PDX 88%
Live status: FAA delays and ground stops