American Airlines
Is AA4550 delayed?
No delay reported yet. AA4550 is scheduled to leave Boston at 13:51 on Nov 15 and reach Chicago at 15:16 (as of Nov 15, 11:26 UTC). Of its last 16 arrivals graded against a published schedule, 4 landed more than 15 min late.
No live update yet
Showing the published schedule until live times come in.
Update time unavailable
Departure
Boston
BOS
Scheduled
Nov 15
Arrival
Chicago
ORD
Scheduled
Nov 15
Times shown in airport local time
Service date: · Scheduled departure date (America/New_York)
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Also sold as BA5421, YX4550
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 20 min early
New York → Montreal
- 18 min early
New York → Montreal
- On schedule (14 min behind)
New York → Montreal
- 5 min early
New York → Montreal
- On schedule (5 min behind)
New York → Montreal
Is AA4550 usually late?
Period: Oct 16, 2026 – Nov 15, 2026
Not graded: 6, with no published arrival schedule to compare against. They are in no other figure.
Percentages and delay figures appear once 20 arrivals are graded.
On time means landing no more than 15 minutes after the scheduled arrival, late more than 15 minutes after, both times read to the minute. The percentages share one base: graded arrivals plus cancelled and diverted flights. A cancelled plan another plan of the flight replaced within 12 hours is not counted. Median and “9 in 10” are interpolated over the graded arrivals. Compares scheduled and actual arrival times, read to the minute. Some flights may be missing.
Departures on record at these airports today
Boston (BOS) departures
Too few departures on record with a known outcome so far today to judge: 17 of 20 needed.
Flights from Boston to Chicago todayChicago (ORD) departures
Too few departures on record with a known outcome so far today to judge: 2 of 20 needed.
Counts cover the departures on record at each airport, not its full schedule.
Related flights
Airports
Flight history and details
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Oct 31, 2026ArrivedNot graded: no published schedule | Montreal | New York | Not available | |
| Oct 31, 2026Arrived | New York | Montreal | -20 | |
| Oct 30, 2026ArrivedNot graded: no published schedule | Montreal | New York | Not available | |
| Oct 30, 2026Arrived | New York | Montreal | -18 | |
| Oct 29, 2026ArrivedNot graded: no published schedule | Montreal | New York | Not available | |
| Oct 29, 2026Arrived | New York | Montreal | 14 | |
| Oct 28, 2026Arrived | New York | Montreal | -5 | |
| Oct 27, 2026ArrivedNot graded: no published schedule | Montreal | New York | Not available | |
| Oct 27, 2026Arrived | New York | Montreal | 5 | |
| Oct 26, 2026ArrivedNot graded: no published schedule | Montreal | New York | Not available | |
| Oct 26, 2026Arrived | New York | Montreal | 59 | |
| Oct 25, 2026ArrivedNot graded: no published schedule | Montreal | New York | Not available | |
| Oct 25, 2026Arrived | New York | Montreal | -21 | |
| Oct 24, 2026Arrived | New York | Montreal | -9 | |
| Oct 23, 2026Arrived | New York | Montreal | 9 | |
| Oct 22, 2026Arrived | New York | Montreal | 1 | |
| Oct 21, 2026Arrived | New York | Montreal | 49 | |
| Oct 20, 2026Arrived | New York | Montreal | 23 | |
| Oct 19, 2026Arrived | New York | Montreal | -9 | |
| Oct 18, 2026Arrived | New York | Montreal | -8 | |
| Oct 17, 2026Arrived | New York | Montreal | -25 | |
| Oct 16, 2026Arrived | New York | Montreal | 30 |