Cheapest return flights from San Francisco to Bangkok in May from $549

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

Return flights

09 May - 19 May Singapore Airlines
15 May - 18 May Singapore Airlines
14 May - 04 Jun Singapore Airlines
14 May - 01 Jun Singapore Airlines
01 May - 12 May Singapore Airlines
15 May - 28 May Singapore Airlines
07 May - 01 Jun Singapore Airlines
03 May - 17 May Singapore Airlines
01 May - 09 May Singapore Airlines
26 May - 07 Jun Singapore Airlines
20 May - 27 May Singapore Airlines
26 May - 11 Jun Singapore Airlines
01 May - 22 May Singapore Airlines
13 May - 23 Jun Korean Air
12 May - 30 May Korean Air
06 May - 28 May Asiana Airlines
24 May - 13 Jun Singapore Airlines
22 May - 06 Jun Singapore Airlines
30 May - 28 Jun China Eastern
14 May - 19 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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