AA4678American Airlines · STL → DCA
updated 3h ago
Route confirmed American Airlines

AA4678 St LouisSTL · 07:03 WashingtonDCA · 10:15

AA4678 by American Airlines flies from St Louis (STL) to Washington (DCA) for the Thu, Nov 5 departure.

Right nowEn route to Washington · off blocks 07:09 · 6 min late
En route

en route from STL to DCA

En routeAA4678 · position estimated
STLSt LouisDCAWashington
Estimated from the boards

Board estimate · gate and arrival times. Off blocks 07:09 · typical taxi-out at STL ≈ 4.9 min.

⚖ AA4678 typically leaves +5 and lands −25. The air wins minutes back.
Typical gate push+5 minmedian posted departure
Typical arrival−25 minmedian over 10 operations
Wins back in air~30 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 10tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-05
+6 gate · −18 arrival
10-31
+9 gate · −27 arrival
10-30
+1 gate · −31 arrival
10-29
+6 gate · −18 arrival
10-28
+9 gate · −25 arrival
10-27
+13 gate · −19 arrival
10-26
+3 gate · −27 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 −25 min · 0 cancelled · 10 operations tracked

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
DCAWashingtonHigh riskDCA delay board →
STL→DCAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
41%Chance of 15+ min delay
1.4%Chance of cancellation
+8 minTypical airport delay in this weather

Driven mainly by DCA (Washington), currently flying MVFR (marginal visual). 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

Fri 6 Nov, local date

High12°Clikely 11°C to 14°C
Low7°Clikely 5°C to 9°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 Washington

Forecast

Fri 6 Nov, local date

High21°Clikely 19°C to 23°C
Low16°Clikely 13°C to 18°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 Washington flights today

same route · American Airlines
AA4703departs 06:00
AA4458departs 10:25
AA4645departs 10:48
AA4769departs 15:51
AA2030departs 17:08

If AA4678 is cancelled, these are the other American Airlines nonstop flights from St Louis to Washington 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 AA4678 actually runs

Pro Flight Search has tracked every published board update for AA4678 across the STL and DCA boards: schedule changes, gate pushes and actual clocks. Usually lands ~24 min early. Based on 10 confirmed landings · 10/10 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 AA4678 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
11-05STL 07:03 07:09 (+6)DCA 10:15 09:57 (−18)
10-31STL 07:03 07:12 (+9)DCA 10:15 09:48 (−27)
10-30STL 07:03 07:04 (+1)DCA 10:15 09:44 (−31)
10-29STL 07:03 07:09 (+6)DCA 10:15 09:57 (−18)
10-28STL 07:03 07:12 (+9)DCA 10:15 09:50 (−25)
10-27STL 07:03 07:16 (+13)DCA 10:15 09:56 (−19)
10-26STL 07:03 07:06 (+3)DCA 10:15 09:48 (−27)
10-24STL 07:03 (+0)DCA 10:15 09:44 (−31)
10-23STL 07:03 07:07 (+4)DCA 10:15 09:50 (−25)
10-22STL 07:03 07:04 (+1)DCA 10:15 09:49 (−26)

Aircraft

Recent tails: N415YX, N430YX, N408YX, N114HQ.

Board clocks recorded as STL and DCA published them.

Planning around AA4678? 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: AA4678 St Louis to Washington on-time performance, measured from the STL and DCA airport boards.

Canonical URL
https://proflightsearch.com/flight/AA4678
How we measure this →