WN819Southwest Airlines · BOS → STL
live · 6m ago
Route confirmed Southwest Airlines

WN819 BostonBOS · 05:10 St LouisSTL · 07:15

WN819 by Southwest Airlines flies from Boston (BOS) to St Louis (STL).

Right nowIn the air to St Louis
06:53

estimated arrival at STL · local time · ~91 min from now

LivePosition · updated 6m ago
STL708 mi · ~91 min leftBOS
38,000 ftAltitudecruising
479 mphSpeed416 kt
269°Direction

Live position · flown path, last 56 min

Typical gate push+0 minmedian posted departure
Typical arrival−24 minmedian over 5 operations
Wins back in air~24 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
11-02
−24 arrival
11-01
−24 arrival
10-30
+0 gate · +9 arrival
10-29
+19 gate · +14 arrival
10-28
+0 gate · −33 arrival
10-27
+0 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

median arrival −24 min · 0 cancelled · 6 operations tracked

The route today

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

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
44%Chance of 15+ min delay
2.1%Chance of cancellation
+6 minTypical airport delay in this weather

Driven mainly by STL (St Louis), currently flying LIFR (low 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

Tue 3 Nov, local date

High21°Clikely 18°C to 23°C
Low11°Clikely 8°C to 13°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 St Louis

Forecast

Tue 3 Nov, local date

High22°Clikely 19°C to 24°C
Low19°Clikely 14°C to 22°C
  • 60% chance of thunder
  • 97% chance of rain

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 St Louis flights today

same route · Southwest Airlines
WN2620departs 05:15
WN3606departs 05:15
WN816departs 05:25
WN355departs 10:45
WN3432departs 11:40
WN575departs 11:45

If WN819 is cancelled, these are the other Southwest Airlines nonstop flights from Boston to St Louis 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 WN819 actually runs

Pro Flight Search has tracked every published board update for WN819 across the BOS and STL boards: schedule changes, gate pushes and actual clocks. Usually lands ~21 min early. Based on 5 confirmed landings · 5/5 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 WN819 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
11-02BOS 05:10STL 07:15 06:51 (−24)
11-01BOS 05:10STL 07:15 06:51 (−24)
10-30BOS 18:45 (+0)STL 20:45 20:54 (+9)
10-29BOS 18:45 19:04 (+19)STL 20:45 20:59 (+14)
10-28BOS 17:40 (+0)STL 19:55 19:22 (−33)
10-27BOS 17:40 (+0)STL

Aircraft

Recent tails: N7750A, N8881L, N8952Q, N8771D.

Board clocks recorded as BOS and STL published them.

Planning around WN819? 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: WN819 Boston to St Louis on-time performance, measured from the BOS and STL airport boards.

Canonical URL
https://proflightsearch.com/flight/WN819
How we measure this →