Route · DAL → ONT · 2020–2025 BTS data
Dallas to Ontario
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), DAL to ONT (Dallas to Ontario) ranks #4202 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 74.8%
- On-time
- -4.2 pts
- vs US avg
- 60 min
- Delay when late
- 1,434
- Flights
- #4202 of 4927
- Corpus placement
Cancelled
0.6%
Best Month
N/A
Worst Month
N/A
Distance
1,200 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 42 | 10 | 0 | 0 | WN |
| Nov 2025 | 35 | 9 | 1 | 0 | WN |
| Oct 2025 | 31 | 14 | 0 | 0 | WN |
| Sep 2025 | 34 | 9 | 0 | 0 | WN |
| Aug 2025 | 35 | 10 | 0 | 0 | WN |
| Jul 2025 | 35 | 16 | 1 | 0 | WN |
| Jun 2025 | 35 | 15 | 0 | 0 | WN |
| May 2025 | 34 | 16 | 0 | 0 | WN |
| Apr 2025 | 33 | 6 | 0 | 0 | WN |
| Mar 2025 | 31 | 9 | 0 | 0 | WN |
| Jan 2025 | 31 | 3 | 0 | 2 | WN |
| Dec 2024 | 31 | 8 | 0 | 0 | WN |
| Nov 2024 | 30 | 3 | 0 | 0 | WN |
| Oct 2024 | 31 | 7 | 0 | 0 | WN |
| Sep 2024 | 34 | 11 | 0 | 0 | WN |
| Aug 2024 | 35 | 5 | 0 | 0 | WN |
| Jul 2024 | 35 | 8 | 1 | 1 | WN |
| Jun 2024 | 34 | 14 | 0 | 0 | WN |
| May 2024 | 31 | 13 | 1 | 0 | WN |
| Apr 2024 | 30 | 7 | 0 | 0 | WN |
| Mar 2024 | 31 | 10 | 0 | 0 | WN |
| Jan 2024 | 31 | 10 | 1 | 0 | WN |
| Dec 2023 | 31 | 4 | 0 | 0 | WN |
| Nov 2023 | 30 | 5 | 0 | 0 | WN |
DAL–ONT seasonal on-time pattern
Best: April (83.7%) · weakest: June (52.5%)
Strongest calendar month
April
83.7% on-time · ~31 flights/mo
Busiest calendar month
July
~34 flights/mo avg
Weakest calendar month
June
52.5% on-time · ~33 flights/mo
Cancellation Rate
0.6%
5 of 790 flights
Diversion Rate
0.4%
3 of 790 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DAL - Dallas
Full on-time, delay-cause, and seasonal performance for Dallas, TX.
DAL on-time profileONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
ONT on-time profileCompare the two airports
See DAL and ONT side by side on delays, cancellations, and reliability.
Compare DAL vs ONTOrigin-hub reliability standing
Softer reliability from DAL
Among 57 routes leaving DAL, only 10 (including this one) clear below 75% on-time, while 0 stay ≥85% and 47 sit mid-band. Travelers comparing DAL options should weigh this 74.8% print against those peers · fleet on-time rank #4500 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to DAL–ONT.
Routes with a similar on-time rate
What the Data Says About DAL to ONT
On-time performance on the DAL to ONT pairing (Dallas to Ontario) trails a chunk of the network: 74.8% of 1,434 tracked flights arrived on schedule, with a 59.8-minute average delay on the ones that ran late. The route spans about 1,200 miles across 1 carrier. Cancellations over the trailing 24 months hit 0.6% (5 of 790 flights), with 0.4% 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, DAL–ONT peaks in April at 83.7% on-time while July carries the heaviest traffic (~34 flights per month) ; the softest month is June at 52.5%, a 31.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does DAL to ONT rank among US routes by traffic? ▼
How often are flights delayed from DAL to ONT? ▼
What is the cancellation rate for DAL to ONT? ▼
How far is the flight from DAL 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 DAL–ONT data
DAL–ONT sits 4.2 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare DAL and ONT airport profiles: delay causes and top routes differ even on the same corridor. DAL airport
- If your dates flex, April (83.7% on-time) beats June (52.5%) on this corridor. Seasonal chart
- 4 other routes post a similar 74.8% 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.