To save on the cost of your flight from Monterrey to Portugal, book at least 61 days before your planned departure. Booking around this time can save you about 93% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,079 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,831.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Portugal. Flights to Portugal from Monterrey in February are about $923 on average during February, but can be found for as low as $576.