WN259Southwest Airlines · STL → BOS
live · 18m ago
Route confirmed Southwest Airlines

WN259 St LouisSTL · 19:55 BostonBOS · 23:35

WN259 by Southwest Airlines flies from St Louis (STL) to Boston (BOS).

Right nowNext departure today Operates daily
07:30

scheduled from STL

Typical gate push+35 minmedian posted departure
Typical arrival+13 minmedian over 3 operations
Wins back in air~22 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+49+99+148 min
10-30
+35 gate · +16 arrival
10-29
+148 gate · +13 arrival
10-26
+26 gate · +6 arrival

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

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
42%Chance of 15+ min delay
2.6%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 on this route

Forecast

St Louis to Boston with Southwest Airlines · Mon 2 Nov, local date

Outlook: below usual
Chance a departure is cancelled
1.0%0.5× usual
Chance a departure leaves 60+ min late
15%0.9× usual

Forecast weather: 80% chance of rain at St Louis

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · 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 · Southwest Airlines
WN863departs 05:50
WN2805departs 06:40
WN3529departs 10:05
WN4527departs 10:10
WN485departs 10:20
WN3694departs 10:25

If WN259 is cancelled, these are the other Southwest 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 WN259 actually runs

Pro Flight Search has tracked every published board update for WN259 across the STL and BOS boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 1 completed leg so far: landed +16 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how WN259 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
10-30STL 19:55 20:30 (+35)BOS 23:35 23:51 (+16)
10-29STL 19:55 22:23 (+148)BOS 23:35 23:48 (+13)
10-26STL 19:55 20:21 (+26)BOS 23:35 23:41 (+6)

Aircraft

Recent tails: N8845L, N8566Z, N8319F.

Board clocks recorded as STL and BOS published them.

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: WN259 St Louis to Boston on-time performance, measured from the STL and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/WN259
How we measure this →