AirHint found the following cheapest return flights from San Francisco (SFO) to Monterrey (MTY) in August 2025 (see full year).

Return flights

15 Aug - 18 Aug	United	direct
08 Aug - 10 Aug	United	direct
08 Aug - 15 Aug	American Airlines
13 Aug - 20 Aug	American Airlines
11 Aug - 18 Aug	Aeromexico
07 Aug - 11 Aug	United	direct
10 Aug - 17 Aug	Aeromexico
07 Aug - 14 Aug	Aeromexico
01 Aug - 03 Aug	Delta
08 Aug - 15 Aug	United	direct

Also check the deals for one-way flights from San Francisco to Monterrey in August.

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.

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Cheapest return flights from San Francisco to Monterrey in August from 202€

Return flights