Route Reliability
Ontario → Phoenix
ONT–PHX · 325 miles · Ontario International Airport to Phoenix Sky Harbor International Airport
- 83%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.5%
- Cancelled
- 3,095
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.American Airlines83%1,487 flights
- 2.Southwest Airlines83%1,608 flights
What the data says
Morning flights do better here.
ONT–PHX flights departing between 3–6 AM arrived on time 96% of the time, versus 67% between 9 PM–12 AM.
Tuesday comes out ahead.
A small edge: 85% on time on Tuesdays against 81% on Sundays.
Not much between American Airlines and Southwest Airlines.
On this route they all land within 83% to 83% on time. Pick on schedule and price.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon82%(461 flights)
- Tue85%(441 flights)
- Wed84%(429 flights)
- Thu84%(469 flights)
- Fri83%(462 flights)
- Sat84%(359 flights)
- Sun81%(457 flights)
- 3–6 AM96%(296 flights)
- 6–9 AM88%(567 flights)
- 9 AM–12 PM89%(429 flights)
- 12–3 PM84%(616 flights)
- 3–6 PM77%(694 flights)
- 6–9 PM73%(461 flights)
- 9 PM–12 AM67%(15 flights)
Jun 81% → May 88% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 81% | 260 |
| July 2025 | 82% | 261 |
| August 2025 | 84% | 237 |
| September 2025 | 87% | 222 |
| October 2025 | 77% | 258 |
| November 2025 | 74% | 265 |
| December 2025 | 81% | 282 |
| January 2026 | 85% | 259 |
| February 2026 | 88% | 240 |
| March 2026 | 86% | 288 |
| April 2026 | 87% | 252 |
| May 2026 | 88% | 254 |
Same trip, other airports
Keep nerding
Based on 3,095 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.