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

Return flights

24 Jul - 29 Jul	United	direct
23 Jul - 28 Jul	United	direct
24 Jul - 28 Jul	United	direct
31 Jul - 06 Aug	Delta
26 Jul - 04 Aug	Delta
27 Jul - 04 Aug	Delta
31 Jul - 06 Aug	United	direct
28 Jul - 31 Jul	Aeromexico
26 Jul - 04 Aug	United	direct
27 Jul - 04 Aug	United	direct
18 Jul - 27 Jul	Alaska Airlines
17 Jul - 22 Jul	Hawaiian Airlines
20 Jul - 27 Jul	Frontier Airlines
17 Jul - 22 Jul	United	direct
18 Jul - 27 Jul	United	direct

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

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 July from $291

Return flights