Cheapest return flights from San Francisco to Bangkok in May from $652

AirHint found the following cheapest return flights from San Francisco (SFO) to Bangkok (BKK) in May 2026 (see full year).

Return flights

06 May - 15 May Asiana Airlines
13 May - 20 May Korean Air
03 May - 16 May Asiana Airlines
15 May - 28 May China Airlines
19 May - 16 Jun Korean Air
01 May - 30 May China Airlines
21 May - 28 May Korean Air
31 May - 20 Jun Air India
26 May - 18 Jun Air India
31 May - 10 Jun United

Also check the deals for one-way flights from San Francisco to Bangkok in May.

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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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