Singapore’s vaccinated travel lanes offered a way to enter without quarantine in October 2021, with designated flights including New York, Los Angeles, and later San Francisco. Singapore Airlines described the 2021 arrangements.
I wanted to plan a Singapore trip, so the designated-flight detail mattered more than the policy headline. A traveler could meet the vaccination rule and still book the wrong flight. The post is a record of the 2021 arrangement, not current entry advice; anyone traveling now should check the airline and government rules for their dates.