AirHint found the following cheapest return flights from Seattle (SEA) to Bangkok (BKK)
in April 2025 (see full year ).
Return flights
30 Apr
- 07 May
Philippine Airlines
$ 683
22 Apr
- 23 May
Asiana Airlines
$ 725
23 Apr
- 04 May
Asiana Airlines
$ 728
20 Apr
- 04 May
Asiana Airlines
$ 728
22 Apr
- 22 May
Asiana Airlines
$ 728
23 Apr
- 13 May
Asiana Airlines
$ 728
15 Apr
- 26 May
Korean Air
$ 758
15 Apr
- 04 May
Korean Air
$ 758
20 Apr
- 10 May
Korean Air
$ 758
21 Apr
- 07 May
Korean Air
$ 759
21 Apr
- 28 Apr
China Airlines
$ 772
16 Apr
- 28 Apr
China Airlines
$ 790
15 Apr
- 24 Apr
China Airlines
$ 815
07 Apr
- 29 Apr
China Airlines
$ 815
08 Apr
- 15 Apr
China Airlines
$ 834
15 Apr
- 22 Apr
STARLUX Airlines
$ 853
13 Apr
- 21 Apr
STARLUX Airlines
$ 853
12 Apr
- 22 Apr
STARLUX Airlines
$ 853
12 Apr
- 25 Apr
STARLUX Airlines
$ 853
01 Apr
- 05 Apr
STARLUX Airlines
$ 853
Also check the deals for one-way flights from Seattle 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.