St. Louis, MO → Phoenix, AZ flight delays
STL → PHX · all airlines · 207 flights · April 2026 · source: US BTS
This route is delayed
20%of the time, by +82 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
80%
Delayed 3h+
1%
Cancelled
0%
Avg when late
+82m
Best & worst day to fly
Most on-time
Saturday
delayed 9%
Worst
Thursday
delayed 26%
Which airline is most punctual on STL → PHX?
Americandelayed 19%
Southwestdelayed 24%
Frequently asked
How often is the St. Louis, MO to Phoenix, AZ flight delayed?
About 20% of STL → PHX flights arrive late (15+ minutes), by an average of 82 minutes when they do, based on 207 flights in April 2026.
Which airline is most punctual on STL → PHX?
American, delayed 19% of the time — the best of the 2 airlines flying this route.
What is the best day to fly STL → PHX?
Saturday is the most on-time (delayed 9%), while Thursday is the worst (delayed 26%).
Airport overviews