I just got a new job in a different city, São Paulo, but my wife is staying for the time being in Rio de Janeiro. I’m planning to travel home at least one weekend each month and would like to find deals for them. I tried Google flights alerts, but it just gives me deals for random week long flights.
Thanks.
likely the best strategy is to sign up for the newsletter/email that each airline who flies that route operates.
also, if you fly this enough, then frequent flyer miles/points will be your best option for saving money, regardless of special deals.