Yes, there are multiple flights from Lester B. Pearson Intl to La Serena for under C$ 1,902. The cheapest flight booked recently is on Multiple Airlines for just C$ 1,850, but on average you can expect to pay C$ 1,856.
There are no direct flights from Lester B. Pearson Intl to La Serena, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.
In Lester B. Pearson Intl, there will be greater rainfall in Lester B. Pearson Intl compared to La Serena over the next 20 days.
You can imagine temperatures to be in the 28 °C range in July. The weather in La Serena is generally colder than Lester B. Pearson Intl's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.