Cheapest return flights from Seattle to Monterrey in April from $407

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

Return flights

17 Apr - 19 Apr Volaris
03 Apr - 12 Apr Hawaiian Airlines

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

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