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

Return flights

26 Apr - 12 May	China Southern
07 Apr - 20 Apr	Air India
08 Apr - 20 Apr	Air India
09 Apr - 22 Apr	Air India
08 Apr - 29 Apr	Air India
20 Apr - 01 May	Air India
07 Apr - 21 Apr	Air India
16 Apr - 29 Apr	Air India
16 Apr - 23 Apr	Air India
06 Apr - 22 Apr	Air India
02 Apr - 13 Apr	Air India
14 Apr - 30 Apr	Air India
08 Apr - 07 May	Air India
13 Apr - 07 May	Air India
28 Apr - 11 May	Korean Air
13 Apr - 13 May	Korean Air
23 Apr - 21 May	Asiana Airlines
20 Apr - 18 May	Singapore Airlines
22 Apr - 05 May	Singapore Airlines
30 Apr - 07 May	Singapore Airlines

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

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 San Francisco to Bangkok in April from 523€

Return flights