WN1581Southwest Airlines · PHL → DEN
live · 52m ago
Route confirmed Southwest Airlines

WN1581 PhiladelphiaPHL · 09:20 DenverDEN · 07:25

WN1581 by Southwest Airlines flies from Philadelphia (PHL) to Denver (DEN) for the Mon, Oct 26 departure.

Right nowLanded in Denver · today
07:13

arrived at DEN · 12 min early

Typical gate push+0 minmedian posted departure
Typical arrival−12 minmedian over 7 operations
Wins back in air~12 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-26
−2 gate · −12 arrival
10-23
−6 gate · −17 arrival
10-22
+3 gate · −11 arrival
10-19
+4 gate · −18 arrival
10-16
−5 gate · −18 arrival
10-15
+7 gate · +17 arrival
10-12
+0 gate · −3 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 −12 min · 0 cancelled · 7 operations tracked

The route today

live boards
PHLPhiladelphiaOn-time likelyPHL delay board →
DENDenverOn-time likelyDEN delay board →
PHL→DENevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
49%Chance of 15+ min delay
0.5%Chance of cancellation
+18 minAvg hub delay right now

Driven mainly by DEN (Denver), currently flying IFR (instrument). For this route and airline, 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 →

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 Philadelphia to Denver flights today

same route · Southwest Airlines
WN3335departs 09:30
WN4040departs 16:15
WN2505departs 16:35
WN2700departs 21:15
WN1579departs 21:20

If WN1581 is cancelled, these are the other Southwest Airlines nonstop flights from Philadelphia to Denver on the same day, with scheduled departure times in PHL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How WN1581 actually runs

Pro Flight Search has tracked every published board update for WN1581 across the PHL and DEN boards: schedule changes, gate pushes and actual clocks. Usually lands ~12 min early. Based on 7 confirmed landings · 6/7 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 WN1581 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
10-26PHL 09:20 09:18 (−2)DEN 07:25 07:13 (−12)
10-23PHL 09:20 09:14 (−6)DEN 07:25 07:08 (−17)
10-22PHL 09:20 09:23 (+3)DEN 07:25 07:14 (−11)
10-19PHL 09:20 09:24 (+4)DEN 07:25 07:07 (−18)
10-16PHL 09:20 09:15 (−5)DEN 07:25 07:07 (−18)
10-15PHL 09:20 09:27 (+7)DEN 07:25 07:42 (+17)
10-12PHL 09:20 (+0)DEN 07:25 07:22 (−3)

Aircraft

Recent tails: N8310C, N8321D, N8879Q, N8824Q.

Board clocks recorded as PHL and DEN published them.

Planning around WN1581? 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 — WN1581 Philadelphia to Denver on-time performance, measured from the PHL and DEN airport boards.

Canonical URL
https://proflightsearch.com/flight/WN1581
How we measure this →