Route · AUS → ONT · 2020–2025 BTS data
Austin to Ontario
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), AUS to ONT (Austin to Ontario) ranks #4420 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 73.3%
- On-time
- -5.7 pts
- vs US avg
- 52 min
- Delay when late
- 1,109
- Flights
- #4420 of 4927
- Corpus placement
Cancelled
0.5%
Best Month
N/A
Worst Month
N/A
Distance
1,196 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 6 | 0 | 0 | WN |
| Jul 2025 | 31 | 5 | 0 | 0 | WN |
| Jun 2025 | 30 | 13 | 0 | 0 | WN |
| May 2025 | 31 | 6 | 0 | 0 | WN |
| Apr 2025 | 30 | 4 | 0 | 0 | WN |
| Mar 2025 | 31 | 5 | 0 | 0 | WN |
| Jan 2025 | 31 | 2 | 0 | 0 | WN |
| Dec 2024 | 31 | 8 | 0 | 0 | WN |
| Oct 2024 | 31 | 5 | 0 | 0 | WN |
| Sep 2024 | 34 | 7 | 0 | 0 | WN |
| Aug 2024 | 34 | 4 | 0 | 0 | WN |
| Jul 2024 | 31 | 15 | 0 | 0 | WN |
| Jun 2024 | 30 | 19 | 0 | 0 | WN |
| May 2024 | 31 | 18 | 1 | 0 | WN |
| Apr 2024 | 30 | 8 | 0 | 0 | WN |
| Mar 2024 | 31 | 11 | 0 | 0 | WN |
| Jan 2024 | 31 | 12 | 1 | 0 | WN |
| Dec 2023 | 31 | 7 | 0 | 0 | WN |
| Nov 2023 | 30 | 10 | 0 | 0 | WN |
| Oct 2023 | 31 | 7 | 1 | 0 | WN |
| Sep 2023 | 30 | 18 | 0 | 0 | WN |
| Aug 2023 | 31 | 10 | 1 | 0 | WN |
| Jul 2023 | 31 | 9 | 0 | 0 | WN |
| Jun 2023 | 30 | 17 | 0 | 0 | WN |
AUS–ONT seasonal on-time pattern
Best: October (80.6%) · weakest: June (55.0%)
Strongest calendar month
October
80.6% on-time · ~31 flights/mo
Busiest calendar month
August
~32 flights/mo avg
Weakest calendar month
June
55.0% on-time · ~30 flights/mo
Cancellation Rate
0.5%
4 of 743 flights
Diversion Rate
0.0%
0 of 743 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
AUS - Austin
Full on-time, delay-cause, and seasonal performance for Austin, TX.
AUS on-time profileONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
ONT on-time profileCompare the two airports
See AUS and ONT side by side on delays, cancellations, and reliability.
Compare AUS vs ONTOrigin-hub reliability standing
Softer reliability from AUS
Among 55 routes leaving AUS, only 7 (including this one) clear below 75% on-time, while 3 stay ≥85% and 45 sit mid-band. Travelers comparing AUS options should weigh this 73.3% print against those peers · fleet on-time rank #4650 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to AUS–ONT.
Routes with a similar on-time rate
What the Data Says About AUS to ONT
On-time performance on the AUS to ONT pairing (Austin to Ontario) trails a chunk of the network: 73.3% of 1,109 tracked flights arrived on schedule, with a 51.6-minute average delay on the ones that ran late. The route spans about 1,196 miles across 1 carrier. Cancellations over the trailing 24 months hit 0.5% (4 of 743 flights), with 0.0% 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, AUS–ONT peaks in October at 80.6% on-time while August carries the heaviest traffic (~32 flights per month) ; the softest month is June at 55.0%, a 25.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does AUS to ONT rank among US routes by traffic? ▼
How often are flights delayed from AUS to ONT? ▼
What is the cancellation rate for AUS to ONT? ▼
How far is the flight from AUS 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 AUS–ONT data
AUS–ONT sits 5.7 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare AUS and ONT airport profiles: delay causes and top routes differ even on the same corridor. AUS airport
- If your dates flex, October (80.6% on-time) beats June (55.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 73.3% 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.