Book until 31.05.2016. To travel until 31.10.2016 except the period between 24.06.2016 and 19.08.2016 to Montreal. To travel between 19.05.2016 and 31.10.2016 except the period between 13.06.2016 and 10.09.2016 to the destination Boston. And to travel between 10.05.2016 and 30.11.2016 except the period between 13.07.2016 and 06.08.2016 to the destination San Juan. All are return fares valid departing from Madrid, Barcelona, Valencia, Bilbao and Malaga on flights operated by Air France, KLM, Delta Air Lines and Alitalia. Minimum stay 6 days, maximum stay 3 months.