AirHint found the following cheapest return flights from Oakland (OAK) to Singapore (SIN) in January 2026 (see full year).

Return flights

20 Jan - 27 Jan	Japan Airlines
13 Jan - 30 Jan	Japan Airlines
13 Jan - 27 Feb	Japan Airlines
15 Jan - 22 Jan	Korean Air
14 Jan - 21 Jan	Korean Air
06 Jan - 21 Jan	Korean Air
16 Jan - 31 Jan	Korean Air
23 Jan - 30 Jan	Korean Air
13 Jan - 28 Feb	Korean Air
05 Jan - 28 Feb	Korean Air
19 Jan - 17 Feb	Japan Airlines
12 Jan - 15 Jan	Korean Air
25 Jan - 17 Feb	EVA Air
16 Jan - 30 Jan	Japan Airlines

Also check the deals for one-way flights from Oakland to Singapore in January.

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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Cheapest return flights from Oakland to Singapore in January from $816

Return flights