About 1 in 7 AA 4636 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (14%); 2.5% were cancelled. The typical flight landed 15 minutes early.
AA 4636: BOS → IND
Scheduled to leave Boston at 10:45 a.m. local time, operated by Republic Airways as YX 4636. Over the past year it arrived on time 86% of the time (241 flights), in line with other AA flights on the route at that hour (88%). Last seen in the data Aug 4, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 35 | 77% |
| Tuesday | 36 | 78% |
| Wednesday | 35 | 89% |
| Thursday | 35 | 86% |
| Friday | 35 | 97% |
| Saturday | 31 | 94% |
| Sunday | 34 | 82% |
Why it was late
All flights BOS → IND · Connecting off AA 4636? Check the risk
Questions
How often is AA 4636 from BOS to IND late?
American Airlines 4636 from Boston, MA to Indianapolis, IN arrived 15 or more minutes late, was diverted or was cancelled on 14% of 241 scheduled flights between September 2025 and August 2026. 2.5% 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.