The celebrations were not just contained to the Mediterranean port however. Here's how much it means to Egyptian fans.
Unused subs: Samir, Zakaria, Kahraba, Ashour, Morsy, Ekramy, Al Shenawy, Gaber, Gabr.
Arnold Bouka Moutou looked to have secured a point for Congo when he leveled matters in the 87th minute.
But the Egyptians' World Cup hoodoo ended as Salah held his nerve late on.
Nigeria became the first African qualifiers Saturday with a 1-0 Group B win over Zambia in Uyo thanks to a goal from another English Premier League player, Alex Iwobi of Arsenal.
In the three decades since their last World Cup appearance, Egypt have won four Africa Cup of Nations titles - in 1998, 2006, 2008 and 2010 - but never taken that form into World Cup qualifying.
The celebrations nearly got too much for goalkeeper Essam El Hadary.
The desperation to qualify was so great ahead of the Congo match that Argentina-born Egypt coach Hector Cuper admitted he was taking medication for high blood pressure.
Egypt substitute Mahmoud Hassan was brought down in the box two minutes into injury time and Salah restored Egypt's lead from the spot, using his left foot to find the back of the net and clinch Egypt's place in Russian Federation next year.