Cheapest return flights from Boston to Singapore in September from $766

AirHint found the following cheapest return flights from Boston (BOS) to Singapore (SIN) in September 2025 (see full year).

Return flights

13 Sep - 28 Oct Turkish Airlines
08 Sep - 23 Sep Turkish Airlines
13 Sep - 17 Sep Turkish Airlines
13 Sep - 20 Sep Etihad Airways
03 Sep - 12 Sep Delta
28 Sep - 03 Oct Etihad Airways
04 Sep - 13 Sep Etihad Airways
03 Sep - 13 Sep Air Canada
05 Sep - 12 Sep Korean Air
12 Sep - 15 Sep Cathay Pacific
28 Sep - 01 Oct Delta

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

Skyscanner

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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