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Luzon island (where Manila is located) in Philippines decided to ban outbound international flights, but the decision was reversed a few days later:
The airline will announce the status of its international flights from March 20 to April 12 at a later date, as it coordinates with authorities.
https://www.pna.gov.ph/articles/1096970:
The Department of Tourism (DOT) has lauded the lifting of the travel ban on outbound passengers, except Filipino tourists, in line with the Luzon-wide enhanced community quarantine.
Peru also has a lockdown: https://www.tennessean.com/in-depth/news/health/2020/03/20/americans-stranded-peru-coronavirus-lockdown/2873582001/
Some found out when a hotel clerk banged on their door late Sunday night to say they had 24 hours to get out of the country
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