WN1555 DenverDEN · 19:20 BostonBOS · 01:15
WN1555 by Southwest Airlines flies from Denver (DEN) to Boston (BOS) for the Thu, Oct 22 departure.
departs DEN · 7 min late
board checked 8m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at DEN and BOS 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 Boston flights today
same route · Southwest AirlinesIf WN1555 is cancelled, these are the other Southwest Airlines nonstop flights from Denver to Boston 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 WN1555 actually runs
Pro Flight Search has tracked every published board update for WN1555 across the DEN and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left noticeably late (~29 min) but landed a little late (~14 min). Not enough to call it.
The verdict above is that record speaking, so it reflects how WN1555 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: N8918Q, N8891Q.
Board clocks recorded as DEN and BOS published them.
Planning around WN1555? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN1555 Denver to Boston on-time performance, measured from the DEN and BOS airport boards.
https://proflightsearch.com/flight/WN1555
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