About 1 in 7 AA 634 flights from Madison arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.5% were cancelled. The typical flight landed 8 minutes early.
AA 634: MSN → PHX
Scheduled to leave Madison at 8:00 a.m. local time. Over the past year it arrived on time 87% of the time (208 flights), better than other AA flights on the route at that hour (80%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 30 | 83% |
| Tuesday | 30 | 90% |
| Wednesday | 30 | 83% |
| Thursday | 30 | 90% |
| Friday | 30 | 90% |
| Saturday | 30 | 83% |
| Sunday | 28 | 86% |
Why it was late
All flights MSN → PHX · Connecting off AA 634? Check the risk
Questions
How often is AA 634 from MSN to PHX late?
American Airlines 634 from Madison, WI to Phoenix, AZ arrived 15 or more minutes late, was diverted or was cancelled on 13% of 208 scheduled flights between September 2025 and August 2026. 0.5% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check American Airlines for today's flight. Method.