AA4727American Airlines · STL → BOS
live · 17m ago
Route confirmed American Airlines

AA4727 St LouisSTL BostonBOS

AA4727 by American Airlines flies from St Louis (STL) to Boston (BOS).

Right nowNext departure today Operates daily
15:21

scheduled from STL

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
BOSBostonOn-time likelyBOS delay board →
STL→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
41%Chance of 15+ min delay
2.0%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at STL and BOS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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 St Louis

Forecast

Mon 9 Nov, local date

High19°Clikely 16°C to 22°C
Low4°Clikely 3°C to 6°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 Boston

Forecast

Mon 9 Nov, local date

High15°Clikely 13°C to 17°C
Low8°Clikely 6°C to 10°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 St Louis to Boston flights today

same route · American Airlines
AA3444departs 09:50
AA3546departs 10:00
AA4801departs 13:10
AA4512departs 18:10
AA4678departs 18:20

If AA4727 is cancelled, these are the other American Airlines nonstop flights from St Louis to Boston on the same day, with scheduled departure times in STL 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 AA4727 actually runs

Pro Flight Search has tracked every published board update for AA4727 across the STL and BOS boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at STL and BOS.

The verdict above is that record speaking, so it reflects how AA4727 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around AA4727? 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: AA4727 St Louis to Boston on-time performance, measured from the STL and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/AA4727
How we measure this →