Cheapest return flights from Boston (BOS) to Singapore (SIN), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
15 Sep 29 Sep Air Canada
01 Sep 29 Oct Air Canada
24 Sep 01 Oct Air Canada
03 Sep 16 Sep Air Canada
14 Sep 27 Sep Air Canada
02 Sep 10 Sep Air Canada
25 Sep 10 Oct Air Canada
10 Sep 25 Sep Korean Air
14 Sep 18 Sep United
09 Sep 17 Sep Cathay Pacific
09 Sep 23 Sep Cathay Pacific
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deals for one-way flights from Boston to Singapore in September.

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Updated Aug 26, 2026.

About these fares

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