Cheapest return flights from Ontario to Bangkok in April from $573

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

Return flights

06 Apr - 21 Apr Korean Air
08 Apr - 20 Apr Korean Air
11 Apr - 20 Apr Korean Air
07 Apr - 20 Apr Korean Air
08 Apr - 19 Apr Korean Air
06 Apr - 20 Apr Korean Air
22 Apr - 29 Apr Korean Air
15 Apr - 26 Apr Korean Air
07 Apr - 22 Apr Korean Air
07 Apr - 14 Apr Korean Air
15 Apr - 10 May Korean Air
15 Apr - 17 May Korean Air
08 Apr - 06 May Korean Air
19 Apr - 10 May Korean Air
23 Apr - 02 May Korean Air
15 Apr - 09 May Delta
09 Apr - 10 May Korean Air
29 Apr - 20 May Korean Air
10 Apr - 10 May China Airlines
19 Apr - 09 May China Airlines

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

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