The eight-time champions took an early lead and never looked like missing out on a 13th appearance in the showpiece as they went on to seal a 5-1 aggregate triumph at Cairo International Stadium.
Just as they did in the first leg, Al Ahly quickly opened the scoring when Marwan Mohsen tucked the ball past Ahmed Tagnaouti in the fifth minute and a VAR check showed the offside flag had been incorrectly raised.
Hussein El Shahat doubled the Egyptian side's advantage when he turned Yahia Attiyat inside out, and Yasser Ibrahim's header before the hour mark effectively ended the tie as a contest.
Substitute Zouheir El-Moutaraji's thunderous 20-yard drive pulled one back for Wydad in the 82nd minute but last year's runners-up were unable to secure a return to the final.
Al Ahly have lost their previous two final appearances and will have to overcome domestic rivals Zamalek or Raja Casablanca if they are to win the Champions League for the first time since 2013.
Following a meeting of the CAF executive committee on Tuesday, it was confirmed that the tournament in Cameroon will now be held in January 2022.
Dates for the rescheduled event and the remaining qualifying fixtures will be decided at a later point.
However, the 2020 Women's AFCON, which was slated to take place from November 23 until December 20, has been cancelled.
With the men's AFCON pushed back, the African Nations Championship will now be held in January 2021 after conditions were deemed unsuitable due to the COVID-19 outbreak in April.
"The CAF executive committee is satisfied with the Cameroonian authorities for their commitment towards the hosting of the two competitions," said CAF president Ahmad Ahmad.
"Cameroon is ready to host either competition and are within schedule."
The CAF Champions League, which was paused at the semi-final stage, will resume in September with single-legged fixtures at a yet-to-be-determined venue. The women's version of the competition will be launched in 2021.
It was also announced the CAF Awards will not be held this year.
Winger Bencharki made the difference at the Mohamed V Complex in Casablanca, to put his side in the ascendancy ahead of the teams meeting again in Egypt on Saturday.
Zamalek, the five-time African champions, survived an early penalty appeal when Soufiane Rahimi went to ground and wanted a spot-kick.
They nudged in front in the 18th minute, with Zizo's cross from the right perfectly flighted to the far post where Bencharki rose well to head into the net.
Rahimi threatened with a header that almost crept in as Moroccan champions Raja fought back, looking to level the tie.
Youssef Obama then spurned a great second-half chance to give Zamalek a two-goal cushion, seeing his close-range shot charged down.
