From Reuters:
Coronavirus: Saudi Arabia suspends international flights for two weeks
Reuters/Cairo
Filed on March 14, 2020 | Last updated on March 14, 2020 at 02.13 pmThe period will be considered as an exceptional official holiday for citizens and residents.
Saudi Arabia has suspended all international flights for two weeks, starting Sunday, March 15, to prevent the spread of coronavirus, state news agency SPA said on Saturday, citing an official source at interior ministry.
The period will be considered as an exceptional official holiday for citizens and residents who are unable to return due to the suspension of flights or if they face quarantine after their return to the Kingdom, SPA cited the official as saying.
Saudi Arabia has reported 86 coronavirus cases.
https://www.khaleejtimes.com/coronav...or-two-weeks-1
Two weeks seems to be the magic time for these international route and airport closures, perhaps because it matches the recommended quarantine time. Or, maybe it just represents the 'foreseeable future' in aviation.