Emerging fly-half Hickey nailed three conversions and three penalties to make up his haul in Auckland, as his side kept a tight defensive line to get the win.
They did not have it all their own way early on, but once they got ahead for a second time before the intevrval there was no going back.
The Blues did score first with a 10th-minute try from George Moala, who was in the right place to collect a kick that bounced all over the place and left the Highlanders' cover stranded.
Hickey tagged the goal before Highlanders' kicker Lima Sopoaga took over, slotting three penalties in a 14-minute spell to put his side in front.
Hickey returned the Blues to the front with a penalty for obstruction, though, and then, with five minutes of the half to go, Bryn Hall sliced through and was stopped before Ma'a Nonu touched down on the next cycle. Hickey again converted for a 17-9 lead.
That became 20-9 after the restart before Sopoaga nailed a long-range three-pointer to keep his side in touch.
Hopes were put out in the 48th minute, though, as Charles Piutau converted good work from Nonu into a try, with Hickey again upgrading the score.
Another Hickey penalty kept the scoreboard moving and, despite late pressure from the Highlanders, that was enough for the Blues to get home.
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The tactical kicking of scrumhalf Will Genia and the pinpoint boot of Quade Cooper helped the Queensland Reds prevail in a tense 22-17 victory over South Africa's Stormers in their Super Rugby clash at Lang Park in Brisbane.
Rob Simmons scored the home side's only try, which Cooper converted along with four penalties, though it was his 67th-minute drop-goal that gave the Reds a 19-10 advantage and the breathing room necessary to see off their opponents.
Damien de Allende scored a first half try while flyhalf Peter Grant added the conversion and a penalty for the Stormers, who lost Gio Aplon to a freak injury when the fullback appeared to dislocate his left elbow in a tackle.
Replacement loose forward Sikhumbuzo Notshe scored his first Super Rugby try in the 73rd minute from a driving maul, which Demetri Catrakilis converted, but like so many other times this season the South Africans left it too late as they suffered a fourth successive loss. (Compiled by Greg Stutchbury; Editing by John O'Brien)
- Sports & Recreation
- George Moala
- Lima Sopoaga