Cheapest return flights from Boston to Singapore in September from $746

AirHint found the following cheapest return flights from Boston (BOS) to Singapore (SIN) in September 2026 (see full year).

Return flights

02 Sep - 16 Sep Cathay Pacific
07 Sep - 14 Sep Cathay Pacific
08 Sep - 15 Sep Cathay Pacific
09 Sep - 16 Sep Cathay Pacific
01 Sep - 08 Sep Korean Air
17 Sep - 27 Sep Cathay Pacific
02 Sep - 19 Sep Korean Air

Also check the deals for one-way flights from Boston to Singapore in September.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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