AA4789American Airlines · DCA → BOS
live · 4m ago
Route confirmed American Airlines

AA4789 WashingtonDCA · 06:00 BostonBOS · 07:48

AA4789 by American Airlines flies from Washington (DCA) to Boston (BOS).

Right nowNext departure tomorrow Operates daily
16:14

scheduled from DCA

Typical gate push+10 minmedian posted departure
Typical arrival−18 minmedian over 6 operations
Wins back in air~28 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 6 operations · gate push → arrival
0+30+60+90 min
10-30
+7 gate · −25 arrival
10-29
+17 gate · −4 arrival
10-28
+9 gate · −26 arrival
10-27
+10 gate · −32 arrival
10-26
+8 gate · −12 arrival
10-25
+23 gate · −5 arrival

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

The last 30 days

arrival outcome per operation

median arrival −18 min · 0 cancelled · 6 operations tracked

The route today

live boards
DCAWashingtonOn-time likelyDCA delay board →
BOSBostonOn-time likelyBOS delay board →
DCA→BOSevery 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
11%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 Washington

Forecast

Sun 8 Nov, local date

High16°Clikely 15°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.

Tomorrow at Boston

Forecast

Sun 8 Nov, local date

High14°Clikely 13°C to 15°C
Low8°Clikely 7°C to 10°C
  • Gusts to 30 kt

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 Washington to Boston flights today

same route · American Airlines
AA4455departs 06:00
AA3235departs 06:59
AA2447departs 07:00
AA1164departs 07:45
AA516departs 07:59
AA4505departs 09:00

If AA4789 is cancelled, these are the other American Airlines nonstop flights from Washington to Boston on the same day, with scheduled departure times in DCA 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 AA4789 actually runs

Pro Flight Search has tracked every published board update for AA4789 across the DCA and BOS boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 2 confirmed landings · 2/2 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how AA4789 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
10-30DCA 06:00 06:07 (+7)BOS 07:48 07:23 (−25)
10-29DCA 06:00 06:17 (+17)BOS 07:48 07:44 (−4)
10-28DCA 06:00 06:09 (+9)BOS 07:48 07:22 (−26)
10-27DCA 06:00 06:10 (+10)BOS 07:48 07:16 (−32)
10-26DCA 06:00 06:08 (+8)BOS 07:48 07:36 (−12)
10-25DCA 06:00 06:23 (+23)BOS 07:48 07:43 (−5)

Aircraft

Recent tails: N411YX, N117HQ, N128HQ, N428YX.

Board clocks recorded as DCA and BOS published them.

Planning around AA4789? 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: AA4789 Washington to Boston on-time performance, measured from the DCA and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/AA4789
How we measure this →