Cheapest return flights from Seattle to Bangkok in April from $497

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

Return flights

10 Apr - 07 May Singapore Airlines
16 Apr - 25 Apr Singapore Airlines
11 Apr - 20 Apr Singapore Airlines
25 Apr - 08 May Singapore Airlines
27 Apr - 08 May Asiana Airlines
13 Apr - 21 Apr Asiana Airlines
09 Apr - 27 Apr Singapore Airlines
09 Apr - 23 Apr Singapore Airlines
06 Apr - 19 Apr Cathay Pacific
09 Apr - 30 Apr Cathay Pacific
15 Apr - 21 Apr Asiana Airlines
10 Apr - 02 May Singapore Airlines
01 Apr - 16 Apr China Airlines
27 Apr - 04 May Asiana Airlines
05 Apr - 10 Apr Singapore Airlines

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

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