AA857American Airlines · BOS → PHL
live · 5m ago
Route confirmed American Airlines

AA857 BostonBOS · 16:59 PhiladelphiaPHL · 18:39

AA857 by American Airlines flies from Boston (BOS) to Philadelphia (PHL).

Right nowNext departure today Operates daily
16:59

scheduled from BOS

Typical gate push−9 minmedian posted departure
Typical arrival−5 minmedian over 3 operations

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
10-30
−9 gate · −5 arrival
10-29
−8 gate · +3 arrival
10-28
−10 gate · −13 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
BOSBostonModerate riskBOS delay board →
PHLPhiladelphiaOn-time likelyPHL delay board →
BOS→PHLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
55%Chance of 15+ min delay
8.4%Chance of cancellation
+32 minTypical airport delay in this weather

Driven mainly by BOS (Boston), currently flying IFR (instrument). These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Boston

Forecast

Mon 9 Nov, local date

High15°Clikely 13°C to 17°C
Low8°Clikely 6°C to 11°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Philadelphia

Forecast

Mon 9 Nov, local date

High16°Clikely 13°C to 18°C
Low9°Clikely 7°C to 12°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Boston to Philadelphia flights today

same route · American Airlines
AA1540departs 06:00
AA690departs 06:00
AA2764departs 08:07
AA1542departs 08:09
AA2743departs 09:30
AA425departs 09:44

If AA857 is cancelled, these are the other American Airlines nonstop flights from Boston to Philadelphia on the same day, with scheduled departure times in BOS local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How AA857 actually runs

Pro Flight Search has tracked every published board update for AA857 across the BOS and PHL boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: landed -5 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how AA857 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-30BOS 16:59 16:50 (−9)PHL 18:39 18:34 (−5)
10-29BOS 16:59 16:51 (−8)PHL 18:39 18:42 (+3)
10-28BOS 16:59 16:49 (−10)PHL 18:39 18:26 (−13)

Aircraft

Recent tails: N951NN, N966NN, N816NN.

Board clocks recorded as BOS and PHL published them.

Planning around AA857? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: AA857 Boston to Philadelphia on-time performance, measured from the BOS and PHL airport boards.

Canonical URL
https://proflightsearch.com/flight/AA857
How we measure this →