AS473Alaska Airlines · STL → SEA
live · 3m ago
Route confirmed Alaska Airlines

AS473 St LouisSTL · 07:02 SeattleSEA · 09:35

AS473 by Alaska Airlines flies from St Louis (STL) to Seattle (SEA).

Right nowNext departure today Operates daily
07:02

scheduled from STL

Typical gate push+11 minmedian posted departure

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-04
+11 gate
10-31
+7 gate
10-30
+1 gate
10-29
+0 gate
10-28
+11 gate
10-27
+29 gate
10-26
+37 gate

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

0 cancelled · 8 operations tracked

The route today

live boards
STLSt LouisOn-time likelySTL delay board →
SEASeattleHigh riskSEA delay board →
STL→SEAevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
37%Chance of 15+ min delay
1.2%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at STL and SEA 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

Thu 5 Nov, local date

High16°Clikely 14°C to 19°C
Low9°Clikely 7°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 Seattle

Forecast

Thu 5 Nov, local date

High14°Clikely 12°C to 15°C
Low9°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.

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 Seattle flights today

same route · Alaska Airlines
AS615departs 06:00
AS618departs 15:23
AS1651departs 16:42
AS314departs 16:42

If AS473 is cancelled, these are the other Alaska Airlines nonstop flights from St Louis to Seattle 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 AS473 actually runs

Pro Flight Search has tracked every published board update for AS473 across the STL and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs on time. Based on 8 confirmed departures · 7/8 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how AS473 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
11-04STL 07:02 07:13 (+11)SEA 09:35
10-31STL 06:02 06:09 (+7)SEA 08:33
10-30STL 07:02 07:03 (+1)SEA 09:35
10-29STL 07:02 (+0)SEA 09:35
10-28STL 07:02 07:13 (+11)SEA 09:35
10-27STL 07:02 07:31 (+29)SEA 09:35
10-26STL 07:02 07:39 (+37)SEA 09:35
10-25STL 07:02 07:12 (+10)SEA 09:35
10-24STL SEA 08:33

Aircraft

Recent tails: N493AS, N558AS, N553AS, N508AS.

Board clocks recorded as STL and SEA published them.

Planning around AS473? 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: AS473 St Louis to Seattle on-time performance, measured from the STL and SEA airport boards.

Canonical URL
https://proflightsearch.com/flight/AS473
How we measure this →