Route · ONT → HOU · 2020–2025 BTS data
Ontario to Houston
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ONT to HOU (Ontario to Houston) ranks #4832 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 84.5%
- On-time
- +5.5 pts
- vs US avg
- 56 min
- Delay when late
- 581
- Flights
- #4832 of 4927
- Corpus placement
Cancelled
0.9%
Best Month
N/A
Worst Month
N/A
Distance
1,345 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 11 | 0 | 0 | WN |
| Oct 2025 | 30 | 9 | 0 | 0 | WN |
| Sep 2025 | 30 | 1 | 0 | 0 | WN |
| Aug 2025 | 30 | 2 | 0 | 0 | WN |
| Jul 2025 | 31 | 9 | 0 | 0 | WN |
| Jun 2025 | 30 | 5 | 0 | 1 | WN |
| May 2025 | 31 | 8 | 0 | 0 | WN |
| Apr 2025 | 30 | 5 | 0 | 0 | WN |
| Mar 2025 | 31 | 3 | 0 | 1 | WN |
| Jan 2025 | 31 | 5 | 1 | 0 | WN |
| Dec 2024 | 31 | 8 | 0 | 0 | WN |
| Oct 2024 | 31 | 1 | 1 | 2 | WN |
| Aug 2024 | 31 | 3 | 0 | 0 | WN |
| Jul 2024 | 31 | 5 | 1 | 0 | WN |
| Jun 2024 | 30 | 3 | 0 | 0 | WN |
| May 2024 | 31 | 4 | 1 | 1 | WN |
| Apr 2024 | 30 | 2 | 0 | 0 | WN |
| Mar 2024 | 31 | 4 | 0 | 0 | WN |
| Jan 2024 | 30 | 2 | 1 | 0 | WN |
ONT–HOU seasonal on-time pattern
Best: September (96.7%) · weakest: December (69.4%)
Strongest calendar month
September
96.7% on-time · ~30 flights/mo
Busiest calendar month
January
~31 flights/mo avg
Weakest calendar month
December
69.4% on-time · ~31 flights/mo
Cancellation Rate
0.9%
5 of 581 flights
Diversion Rate
0.9%
5 of 581 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
ONT on-time profileHOU - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
HOU on-time profileCompare the two airports
See ONT and HOU side by side on delays, cancellations, and reliability.
Compare ONT vs HOUOrigin-hub reliability standing
Mid-pack among ONT departures
From ONT, this corridor sits with 9 other 75–85% on-time routes out of 21 tracked departures, not the hub's reliability leaders (10 at ≥85%) and not the softest ( 2 below 75%). Destination: Houston · fleet on-time rank #1410 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ONT–HOU.
Routes with a similar on-time rate
What the Data Says About ONT to HOU
Bureau of Transportation Statistics records show Ontario to Houston (ONT to HOU) running a 84.5% on-time rate over 581 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 56.3 minutes. The 1,345-mile corridor is served by 1 carrier, and over the last 24 months 0.9% of 581 flights were cancelled, 0.9% 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, ONT–HOU peaks in September at 96.7% on-time while January carries the heaviest traffic (~31 flights per month) ; the softest month is December at 69.4%, a 27.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ONT to HOU rank among US routes by traffic? ▼
How often are flights delayed from ONT to HOU? ▼
What is the cancellation rate for ONT to HOU? ▼
How far is the flight from ONT to HOU? ▼
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 ONT–HOU data
ONT–HOU runs 5.5 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare ONT and HOU airport profiles: delay causes and top routes differ even on the same corridor. ONT airport
- If your dates flex, September (96.7% on-time) beats December (69.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 84.5% 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.