"Dubai’s Emirates operated an early morning services to Tehran on Friday, according to its website." (Reuters, "Factbox: Flights to Tehran canceled after Canada says Iranian missile brought down Ukraine jet," 1/10/2020).
"The opening of a new air corridor between two neighboring countries rarely captures the attention of the world's media. But when Emirates Airline launched flights from Dubai to Mashhad on 1 September, everyone knew the UAE flag-carrier was thinking about much more than its own bilateral links with Iran. Air traffic between the two countries has been rising since long before July's landmark nuclear agreement... FlyDubai has followed suit by expanding its Iranian network from two to nine destinations this year, while Etihad has more than doubled frequencies on its Abu Dhabi-Tehran route. Much the same script is being followed across the water in Doha, where flag-carrier Qatar Airways has grown seat capacity on its three Iranian routes by 30% since last summer." (Al Arabiya, "Iran plays catch-up in Gulf aviation boom," 9/13/15)