Ontario, CA → Phoenix, AZ flight delays
ONT → PHX · all airlines · 252 flights · April 2026 · source: US BTS
This route is delayed
13%of the time, by +80 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
87%
Delayed 3h+
0.8%
Cancelled
0%
Avg when late
+80m
Best & worst day to fly
Most on-time
Tuesday
delayed 3%
Worst
Friday
delayed 22%
Which airline is most punctual on ONT → PHX?
Southwestdelayed 14%
Americandelayed 14%
Frequently asked
How often is the Ontario, CA to Phoenix, AZ flight delayed?
About 13% of ONT → PHX flights arrive late (15+ minutes), by an average of 80 minutes when they do, based on 252 flights in April 2026.
Which airline is most punctual on ONT → PHX?
Southwest, delayed 14% of the time — the best of the 2 airlines flying this route.
What is the best day to fly ONT → PHX?
Tuesday is the most on-time (delayed 3%), while Friday is the worst (delayed 22%).
Airport overviews