Flight number record
AA 2453
American Airlines · Los Angeles to Boston
- Route
- LAX → BOS
- Departs
- 22:00
- Flights
- 354
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 2453, check with American Airlines.
AA 2453 lands a B+, about a point better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 354 flights, with a median arrival 5 minutes early.
Key figures
On time
78.3%
Arrivals under 15 minutes late, of 351 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
0.85%
National rate is 1.89%
1 hour+ late
7.7%
National rate is 8.3%
These figures cover 354 flights between September 2025 and August 2026. The median arrival is 5 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When AA 2453 flies
AA 2453 flies LAX to BOS without a single fixed slot. Its most common scheduled departure was 22:00, used on 81 of 354 flights, with 23:59 (56 flights) and 23:30 (43 flights) next.
- Departs 22:0081 flights22.9%
- Departs 23:5956 flights15.8%
- Departs 23:3043 flights12.1%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 22:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and AA 2453 runs 8 points better at 78.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
AA 2453 next to LAX to BOS
Every carrier on LAX to BOS combined arrived on time 76.2% of the time across 4,797 flights, so AA 2453 is 2 points ahead of it. American flew 1,184 flights on the same city pair under all its flight numbers, including this one, and those ran 74.1% on time. Across its whole network American Airlines managed 74.7%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 2453thin sample | 354 | 78.3% | 74 min | 0.85% | B+ |
| All American Airlines on LAX–BOS | 1,184 | 74.1% | 94 min | 1.60% | C |
| All carriers on LAX–BOS | 4,797 | 76.2% | 80 min | 1.81% | B |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 2453 quarter by quarter
AA 2453 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.2% on time and its weakest Jul–Sep 2026 at 69.4%, a swing of 23 points on roughly 89 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202529 flights—
- Oct–Dec 202583 flights72.3%
- Jan–Mar 202690 flights72.4%
- Apr–Jun 202690 flights92.2%
- Jul–Sep 202662 flights69.4%
Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, AA 2453 did best on Tuesday at 90.4% on time and worst on Wednesday at 71.4%. Each day rests on about 51 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late AA 2453 runs when it is late
AA 2453 often beats the schedule: 114 of 351 completed flights, 32%, arrived 15 minutes or more early. The 76 late arrivals split 29 under half an hour, 20 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early114 flights32.5%
- Within 15 min161 flights45.9%
- 15–29 min late29 flights8.3%
- 30–59 min late20 flights5.7%
- 1–2 hours late12 flights3.4%
- 2+ hours late15 flights4.3%
Scale runs 0% to 100%.
Share of 351 completed flights by arrival against schedule.
20 of 82 late departures made up the time and arrived on time, 24% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for AA 2453
The latest arrival of the period was on 5 November 2025, 13 hours 28 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 5 November 2025 | 13 hours 28 minutes | Carrier |
| 6 December 2025 | 7 hours 5 minutes | Carrier |
| 10 July 2026 | 3 hours 41 minutes | Carrier |
| 20 September 2025 | 3 hours 6 minutes | Carrier |
| 9 January 2026 | 3 hours 4 minutes | Carrier |
Delay causes
Why AA 2453 runs late
Carrier accounts for 62% of the 5,634 delay minutes carriers reported here, and the remaining four split what is left.
- 62%Carrier
- 29%Late-arriving aircraft
- 9%National Airspace System
The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,487 of the 5,634 delay minutes reported here. The split is drawn from 5,634 delay minutes reported on AA 2453.
Cancellations are rare at 0.85%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
7.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
At 2,611 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
Every one of the 354 flights under AA 2453 in the data flew LAX to BOS. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 354 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking AA 2453
For a booking, read AA 2453 as 78.3% on time with 0.85% cancelled over 354 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- LAX to BOS, every carrier and departure
- BOS to LAX, the return direction
- Delta Air Lines 639 on the same route81.6%
- United Airlines 1783 on the same route82.0%
- American Airlines 12 on the same route78.8%
- United Airlines 2210 on the same route90.7%
- Delta Air Lines 437 on the same route67.5%
- JetBlue Airways 988 on the same route78.4%
- Los Angeles International (LAX) delay statistics
- Boston Logan International (BOS) delay statistics
- American Airlines on-time record
- Every American Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
A flight number here means American Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.