It's about a 7-hour flight from Toronto and you can find tickets for under $500 round-trip. According to Skyscanner's website, there are currently round-trip flights to Lisbon available in March ...

Using Skyscanner search data, roundtrip flights from Toronto to Lisbon in April can currently be found for as low as $486. Flights from Vancouver to Lisbon are $831, or $672 from Montreal. Check ...