WN1637 DenverDEN · 19:05 PhoenixPHX · 20:00
WN1637 by Southwest Airlines flies from Denver (DEN) to Phoenix (PHX) for the Mon, Sep 14 departure.
departs DEN · 36 min late
board checked 11m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at DEN and PHX are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. 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 departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Denver to Phoenix flights today
same route · Southwest AirlinesIf WN1637 is cancelled, these are the other Southwest Airlines nonstop flights from Denver to Phoenix on the same day, with scheduled departure times in DEN local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN1637 actually runs
Pro Flight Search has tracked every published board update for WN1637 across the DEN and PHX boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +29 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN1637 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N449WN, N296WN, N8322X.
Board clocks recorded as DEN and PHX published them.
Planning around WN1637? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — WN1637 Denver to Phoenix on-time performance, measured from the DEN and PHX airport boards.
https://proflightsearch.com/flight/WN1637
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