Flight number record
AA 1057
American Airlines · Boston to Phoenix
- Route
- BOS → PHX
- Departs
- 12:25
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s AA 1057, check with American Airlines.
AA 1057 lands a B, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 361 flights, with a median arrival 9 minutes early.
Key figures
On time
78.1%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
1.39%
National rate is 1.89%
1 hour+ late
5.9%
National rate is 8.3%
These figures cover 361 flights between September 2025 and August 2026. The median arrival is 9 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 1057 flies
AA 1057 flies BOS to PHX without a single fixed slot. Its most common scheduled departure was 12:25, used on 45 of 361 flights, with 12:41 (44 flights) and 12:36 (42 flights) next.
- Departs 12:2545 flights12.5%
- Departs 12:4144 flights12.2%
- Departs 12:3642 flights11.6%
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 12:25 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and AA 1057 runs level with that at 78.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
AA 1057 next to BOS to PHX
Every carrier on BOS to PHX combined arrived on time 77.3% of the time across 2,012 flights, so AA 1057 is about level with it. American flew 1,310 flights on the same city pair under all its flight numbers, including this one, and those ran 80.0% on time. Across its whole network American Airlines managed 74.7%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| AA 1057thin sample | 361 | 78.1% | 56 min | 1.39% | B |
| All American Airlines on BOS–PHX | 1,310 | 80.0% | 80 min | 1.60% | B |
| All carriers on BOS–PHX | 2,012 | 77.3% | 71 min | 1.69% | B |
| American Airlines, whole network | 988,892 | 74.7% | 85 min | 2.14% | C |
Across the year
AA 1057 quarter by quarter
Quarter by quarter AA 1057 held fairly steady: 73.3% in Jul–Sep 2025, 83.0% in Oct–Dec 2025, 76.7% in Jan–Mar 2026, 76.9% in Apr–Jun 2026 and 77.0% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights73.3%
- Oct–Dec 202589 flights83.0%
- Jan–Mar 202690 flights76.7%
- Apr–Jun 202691 flights76.9%
- Jul–Sep 202661 flights77.0%
Scale runs 65% to 90%.
By weekday, AA 1057 ranged from 73.1% on Friday to 82.4% on Saturday. With about 52 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late AA 1057 runs when it is late
AA 1057 often beats the schedule: 128 of 356 completed flights, 36%, arrived 15 minutes or more early. The 78 late arrivals split 30 under half an hour, 27 between 30 and 60 minutes, and 21 an hour or more.
- 15+ min early128 flights36.0%
- Within 15 min150 flights42.1%
- 15–29 min late30 flights8.4%
- 30–59 min late27 flights7.6%
- 1–2 hours late12 flights3.4%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
A late pushback is often recovered here: of 81 departures that left 15 minutes late or more, 26 still arrived on time. In the other direction, 23 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PHX.
The worst days
Worst days for AA 1057
The latest arrival of the period was on 27 January 2026, 5 hours 43 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across January, November, February and December, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 January 2026 | 5 hours 43 minutes | Late-arriving aircraft |
| 30 November 2025 | 3 hours 55 minutes | Carrier |
| 7 February 2026 | 3 hours 16 minutes | Extreme weather |
| 28 December 2025 | 3 hours 2 minutes | Carrier |
| 24 January 2026 | 2 hours 58 minutes | Late-arriving aircraft |
Delay causes
Why AA 1057 runs late
Late-arriving aircraft accounts for 44% of the 4,391 delay minutes carriers reported here, and the remaining four split what is left.
- 44%Late-arriving aircraft
- 30%Carrier
- 21%National Airspace System
- 6%Extreme weather
44% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,391 reported delay minutes here, that single category outweighs weather by 7 to one. The split is drawn from 4,391 delay minutes reported on AA 1057.
Cancellations sit at 1.39% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.9% 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 about an hour, which a normal layover absorbs.
At 2,300 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 361 flights under AA 1057 in the data flew BOS to PHX. 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. 361 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 1057
For a booking, read AA 1057 as 78.1% on time with 1.39% cancelled over 361 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BOS to PHX, every carrier and departure
- PHX to BOS, the return direction
- Delta Air Lines 514 on the same route71.2%
- Boston Logan International (BOS) delay statistics
- Phoenix Sky Harbor International (PHX) 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
- Why the first flight of the morning is statistically safest
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.