Question : What is the cheapest round-trip ticket you can get to Belem?
Answer : KLM is your best bet for finding that coveted low fare. They're offering fares as low as $2,309, while prices for other flights are as high as $12,354.
Question : Will you do what it takes to get the absolute lowest-cost flight?
Answer : Friday is your cheapest day to fly in the month of November. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.
Question : Do prices fluctuate more for this route than others?
Answer : Ranging anywhere from $2,309 to $12,354, prices for BIO to BEL do fluctuate much more than the majority of routes from Spain and Canary Islands. Prices tend to be lower the further out you book.
Question : How many days should you spend in Belem?
Answer : The average time spent in Belem by travelers from Bilbao is about one week.