The best day to arrive at Lisbon is Tuesday and it would be best to avoid Saturday, as prices are on average 46.91% higher than on Tuesday. (Average prices, based on 853 datapoints.)
At Lisbon the most flights depart around 20:00. (Hourly flights, based on 313 datapoints.)
From Lisbon it is on average the cheapest to fly to Barcelona and to Madrid. (Average prices, based on 602 datapoints.)
From Lisbon most of the flights depart to Amsterdam, second best connected from Lisbon is London. (Daily flights, based on 66 datapoints.)
