Route · CLT → ONT · 2020–2025 BTS data
Charlotte to Ontario
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CLT to ONT (Charlotte to Ontario) ranks #4451 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 67.5%
- On-time
- -11.5 pts
- vs US avg
- 68 min
- Delay when late
- 1,071
- Flights
- #4451 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
N/A
Worst Month
N/A
Distance
2,078 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 8 | 0 | 0 | AA |
| Oct 2025 | 31 | 3 | 0 | 0 | AA |
| Sep 2025 | 30 | 4 | 0 | 0 | AA |
| Aug 2025 | 31 | 6 | 1 | 0 | AA |
| Jul 2025 | 31 | 19 | 0 | 0 | AA |
| Jun 2025 | 30 | 13 | 0 | 0 | AA |
| May 2025 | 31 | 7 | 0 | 0 | AA |
| Apr 2025 | 30 | 6 | 0 | 0 | AA |
| Mar 2025 | 30 | 6 | 1 | 0 | AA |
| Dec 2024 | 31 | 6 | 0 | 0 | AA |
| Oct 2024 | 30 | 3 | 0 | 0 | AA |
| Sep 2024 | 30 | 5 | 0 | 0 | AA |
| Aug 2024 | 31 | 15 | 0 | 0 | AA |
| Jul 2024 | 31 | 20 | 0 | 1 | AA |
| Jun 2024 | 30 | 10 | 1 | 0 | AA |
| May 2024 | 31 | 22 | 2 | 0 | AA |
| Apr 2024 | 30 | 13 | 0 | 0 | AA |
| Mar 2024 | 31 | 7 | 0 | 0 | AA |
| Jan 2024 | 31 | 12 | 0 | 0 | AA |
| Dec 2023 | 31 | 4 | 0 | 0 | AA |
| Nov 2023 | 30 | 9 | 0 | 0 | AA |
| Oct 2023 | 31 | 7 | 0 | 0 | AA |
| Sep 2023 | 30 | 4 | 0 | 0 | AA |
| Aug 2023 | 31 | 17 | 1 | 0 | AA |
CLT–ONT seasonal on-time pattern
Best: September (85.6%) · weakest: May (53.2%)
Strongest calendar month
September
85.6% on-time · ~30 flights/mo
Busiest calendar month
January
~31 flights/mo avg
Weakest calendar month
May
53.2% on-time · ~31 flights/mo
Cancellation Rate
0.8%
6 of 734 flights
Diversion Rate
0.1%
1 of 734 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
CLT - Charlotte
Full on-time, delay-cause, and seasonal performance for Charlotte, NC.
CLT on-time profileONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
ONT on-time profileCompare the two airports
See CLT and ONT side by side on delays, cancellations, and reliability.
Compare CLT vs ONTOrigin-hub reliability standing
Softer reliability from CLT
Among 129 routes leaving CLT, only 8 (including this one) clear below 75% on-time, while 5 stay ≥85% and 116 sit mid-band. Travelers comparing CLT options should weigh this 67.5% print against those peers · fleet on-time rank #4876 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to CLT–ONT.
Routes with a similar on-time rate
What the Data Says About CLT to ONT
On-time performance on the CLT to ONT pairing (Charlotte to Ontario) trails a chunk of the network: 67.5% of 1,071 tracked flights arrived on schedule, with a 67.9-minute average delay on the ones that ran late. The route spans about 2,078 miles across 1 carrier. Cancellations over the trailing 24 months hit 0.8% (6 of 734 flights), with 0.1% diverted.
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
On the multi-year calendar, CLT–ONT peaks in September at 85.6% on-time while January carries the heaviest traffic (~31 flights per month) ; the softest month is May at 53.2%, a 32.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does CLT to ONT rank among US routes by traffic? ▼
How often are flights delayed from CLT to ONT? ▼
What is the cancellation rate for CLT to ONT? ▼
How far is the flight from CLT to ONT? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using CLT–ONT data
CLT–ONT sits 11.5 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare CLT and ONT airport profiles: delay causes and top routes differ even on the same corridor. CLT airport
- If your dates flex, September (85.6% on-time) beats May (53.2%) on this corridor. Seasonal chart
- 4 other routes post a similar 67.5% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.