Saudi Arabia's budget airliner flynas announced on Wednesday making the first commercial flight from Riyadh to Baghdad since 1990, as ties with neighboring Iraq improved over the last period.
National flag carrier Saudia, also known as Saudi Arabian Airlines, is also scheduled to operate a flight to Baghdad from Thursday.
"Our first flight took off today from Riyadh to Baghdad," Flynas wrote on Twitter, posting pictures of the cabin crew and passengers.
According to AFP, Tickets for the maiden flight were advertised for as low as $7 (six euros) excluding taxes as flynas CEO Bandar al-Muhanna said the move to reopen the route would help "link the two sisterly countries".
Flights between Iraq and Saudi Arabia were suspended some 27 years ago in August 1990 after former Iraqi president Saddam Hussein ordered his troops into neighboring Kuwait.
After years of tense relations, ties between Saudi Arabia and Iraq have begun looking up in recent months.
Saudi Foreign Minister Adel al-Jubeir headed to Baghdad in February for talks with Iraqi Prime Minister Haider al-Abadi on the first visit of its kind since 2003.
Abadi then visited Riyadh in June, followed the next month by influential Iraqi Shiite cleric Moqtada Sadr, who led a militia that fought against the US occupation of Iraq.
Private carrier flynas, in which Saudi billionaire Prince Al-Waleed bin Talal holds a 34-percent stake, plans to expand its routes from Saudi airports to major cities across Iraq.