Route · PHX → ONT · 2020–2025 BTS data
Phoenix to Ontario
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), PHX to ONT (Phoenix to Ontario) ranks #492 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.2%
- On-time
- +2.2 pts
- vs US avg
- 63 min
- Delay when late
- 16,938
- Flights
- #492 of 4927
- Corpus placement
Cancelled
0.4%
Best Month
Jan 2025 88%
Worst Month
May 2024 69%
Distance
325 mi
Carriers
39
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 282 | 64 | 1 | 0 | WN,AA |
| Nov 2025 | 273 | 65 | 7 | 0 | AA,WN |
| Oct 2025 | 258 | 55 | 0 | 0 | AA,OO,WN |
| Sep 2025 | 227 | 51 | 3 | 0 | WN,OO,AA |
| Aug 2025 | 237 | 44 | 0 | 0 | AA,OO,WN |
| Jul 2025 | 263 | 58 | 1 | 0 | AA,OO,WN |
| Jun 2025 | 260 | 76 | 0 | 0 | AA,OO,WN,MQ |
| May 2025 | 294 | 65 | 0 | 1 | AA,OO,WN,MQ |
| Apr 2025 | 289 | 50 | 0 | 0 | MQ,OO,WN,AA |
| Mar 2025 | 291 | 56 | 0 | 0 | AA,WN,MQ |
| Feb 2025 | 240 | 31 | 0 | 0 | AA,OO,WN,MQ |
| Jan 2025 | 255 | 30 | 5 | 4 | AA,OO,WN,MQ |
| Dec 2024 | 281 | 48 | 0 | 0 | AA,MQ,WN |
| Nov 2024 | 272 | 33 | 0 | 0 | MQ,WN,OO,AA |
| Oct 2024 | 292 | 47 | 1 | 1 | OO,WN,AA |
| Sep 2024 | 262 | 41 | 0 | 0 | WN,OO,AA,F9 |
| Aug 2024 | 290 | 51 | 1 | 0 | AA,F9,WN,OO |
| Jul 2024 | 289 | 80 | 2 | 0 | AA,F9,OO,WN |
| Jun 2024 | 275 | 55 | 2 | 0 | AA,F9,OO,WN |
| May 2024 | 293 | 90 | 2 | 0 | AA,F9,OO,WN |
| Apr 2024 | 274 | 49 | 0 | 1 | AA,F9,WN |
| Mar 2024 | 279 | 52 | 0 | 0 | AA,F9,WN |
| Feb 2024 | 242 | 33 | 0 | 0 | AA,F9,OO,WN |
| Jan 2024 | 254 | 54 | 0 | 0 | AA,F9,MQ,WN,OO |
PHX–ONT seasonal on-time pattern
Best: January (86.8%) · weakest: June (73.6%)
Strongest calendar month
January
86.8% on-time · ~243 flights/mo
Busiest calendar month
March
~259 flights/mo avg
Weakest calendar month
June
73.6% on-time · ~225 flights/mo
Cancellation Rate
0.4%
25 of 6,472 flights
Diversion Rate
0.1%
7 of 6,472 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHX - Phoenix
Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.
PHX on-time profileONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
ONT on-time profileCompare the two airports
See PHX and ONT side by side on delays, cancellations, and reliability.
Compare PHX vs ONTOrigin-hub reliability standing
Mid-pack among PHX departures
From PHX, this corridor sits with 71 other 75–85% on-time routes out of 97 tracked departures, not the hub's reliability leaders (25 at ≥85%) and not the softest ( 1 below 75%). Destination: Ontario · fleet on-time rank #2665 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHX–ONT.
Routes with a similar on-time rate
What the Data Says About PHX to ONT
16,938 tracked flights put the PHX to ONT pairing (Phoenix to Ontario) at a 81.2% on-time rate, squarely in line with the wider network. Delays that do occur run 63.4 minutes on average. Across the 325-mile route and its 39 carriers, the trailing 24 months show 0.4% cancelled and 0.1% diverted (6,472 flights sampled).
The monthly split is wide on this route: Jan 2025 posted the strongest performance at 88% on-time, while May 2024 came in at just 69% - a 19-point swing worth factoring into travel timing.
On the multi-year calendar, PHX–ONT peaks in January at 86.8% on-time while March carries the heaviest traffic (~259 flights per month) ; the softest month is June at 73.6%, a 13.2-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does PHX to ONT rank among US routes by traffic? ▼
How often are flights delayed from PHX to ONT? ▼
What is the cancellation rate for PHX to ONT? ▼
How far is the flight from PHX to ONT? ▼
When is the best time to fly from PHX 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 PHX–ONT data
PHX–ONT is mid-pack at 81.2% on-time; month and carrier mix move more than the corridor headline.
- Compare PHX and ONT airport profiles: delay causes and top routes differ even on the same corridor. PHX airport
- If your dates flex, January (86.8% on-time) beats June (73.6%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.2% 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.