WN1435 San FranciscoSFO · 11:15 DenverDEN · 13:00
WN1435 by Southwest Airlines flies from San Francisco (SFO) to Denver (DEN) for the Wed, Sep 9 departure.
Same number through SFO → SAN → DEN
departs SFO · 18 min late
board checked 23m ago · checking again in 45s
Aircraft is still on the ground at SFO · 46 min after scheduled departure
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SFO and DEN 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 San Francisco to Denver flights today
same route · Southwest AirlinesIf WN1435 is cancelled, these are the other Southwest Airlines nonstop flights from San Francisco to Denver on the same day, with scheduled departure times in SFO local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN1435 actually runs
Pro Flight Search has tracked every published board update for WN1435 across the SFO and DEN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left a little late (~18 min) but landed about 5 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN1435 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as SFO and DEN published them.
Planning around WN1435? 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 — WN1435 San Francisco to Denver on-time performance, measured from the SFO and DEN airport boards.
https://proflightsearch.com/flight/WN1435
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