Cheapest return flights from Ontario to Bangkok in April from $582

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

Return flights

28 Apr - 05 May Korean Air
20 Apr - 27 Apr Korean Air
20 Apr - 06 May Korean Air
29 Apr - 20 May Korean Air
19 Apr - 27 Apr Korean Air
24 Apr - 03 May Korean Air
23 Apr - 03 May Korean Air
20 Apr - 10 May Korean Air
19 Apr - 10 May Korean Air
20 Apr - 12 May Korean Air
29 Apr - 13 May Korean Air
25 Apr - 03 May Korean Air
22 Apr - 28 Apr Korean Air
22 Apr - 29 Apr Korean Air
19 Apr - 29 Apr Korean Air
21 Apr - 30 Apr Korean Air
05 Apr - 15 Apr China Airlines
12 Apr - 15 Apr China Airlines
07 Apr - 21 Apr China Airlines
08 Apr - 16 Apr China Airlines

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

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