Canadian-Egyptian Mohamed Fahmy, Egyptian Baher Mohamed and Australian Peter Greste were sentenced to up to 10 years in prison in July 2014.
Their convictions for spreading false news were overturned and they were freed in February to await retrial.
Mr Greste was deported to Australia and is on trial again in absentia.
The journalists strenuously deny collaborating with the Muslim Brotherhood, which the Egyptian government considers a terrorist group, after the overthrow of President Mohammed Morsi by the military in 2013.
At a hearing on Sunday, the journalists were told the verdict would be delayed until 29 August.

Greg Dyke has invited Astle's widow Laraine and his daughters, Claire and Dawn, to Wembley Stadium on 10 August.
The ex-West Bromwich Albion and England forward died in 2002.
A neurosurgeon said last month that he died from a brain condition linked to boxers rather than Alzheimer's disease as previously thought.
Dawn Astle said: "We want to stress the immediate message in dealing with head injuries and concussions, to discuss the FA's medical policies on this and work on player education.
"[The issue] has to be taken seriously because it's about lives.
"It's not like a back or knee injury, because once the brain is damaged it doesn't repair itself and Dad is proof of that."
Ms Astle said Dr Willie Stewart, who carried out a new examination of Mr Astle's brain, would also be at the meeting.
Astle's family have campaigned for the FA to carry out research into the risks of heading footballs and players suffering concussion.
The Justice for Jeff group has also held protests at West Brom games.
The FA previously apologised to the family for not keeping them informed about its work and said its rules on concussion were due to be changed ahead of the 2014/15 season.
A spokesman for the FA said Mr Dyke "had been keen to meet the Astle family for a long time" to hear their concerns.
It was initially believed Astle died from Alzheimer's disease, but the coroner at his inquest ruled his brain had been damaged by heading heavy leather balls.
He played for West Bromwich Albion from 1964-1974 scoring 137 goals in 292 league appearances.

The 28-year-old Wales international has been with the Cherries since 2011, during which time they have progressed from League One to the Premier League.
MacDonald came through the Swansea youth system and has had four stints out on loan at Yeovil.
"He is a terrific pro who understands the way we want to play," boss Gary Caldwell told the club website.
He is not available for the Latics' game against Blackburn on Saturday, 13 August but is registered for matches after this weekend.
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An Egyptian court has again delayed a verdict in the retrial of three al-Jazeera journalists convicted of aiding the banned Muslim Brotherhood.
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The family of the former footballer Jeff Astle is to meet the FA chairman next month to discuss head injuries in the game, as part of their campaign.
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Wigan Athletic have signed Bournemouth midfielder Shaun MacDonald for an undisclosed fee on a two-year deal.