The Israel-Iran conflict, together with the military intervention of the United States and Tehran’s retaliation, has continued to heavily disrupt global travel despite some Middle East nations saying their airspaces were now open again.

Russia’s civil aviation agency Rosaviatsia announced on Friday that it was lifting most restrictions on civilian flights over the Middle East following three days of calm under a U.S.-led ceasefire between Iran and Israel.

Airports have been packed with thousands of stranded travelers following airspace closures and widespread flight cancellations and delays. Here's what to know.