Originally Posted by
indufan
Almost has to be wind. Other factors could be cargo (and general weight) and temperature in DEN although their long runway usually alleviates that and it is only April.
They wouldn't do a "tech stop" (really a "flag stop") for cargo or pax weight. You cut the cargo and V/IDB the pax. There's plenty of ways to reroute pax from DEN to SEA.
My guess is either mechanical or weather related.