Launch vehicle build-up then continues with the second stage being hoisted atop the first stage.
=== Carichi utili notevoli ===* Mars Odyssey* CONTOUR* Dawn* Deep Impact* Deep Space 1* GLAST* Mars Climate Orbiter* Spirit* Opportunity* Mars Global Surveyor* Mars Pathfinder* Mars Phoenix Lander* Mars Polar Lander* MESSENGER* NEAR* Polar* ROSAT* SIRTF* STEREO* Swift* THEMIS* USA 193 (NROL-21)* WMAP* WINDFra il Maggio 1997 e il novembre 1998, i Delta II hanno posizionato in orbita 55 satelliti Iridium.