Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 234% on the overall cost on flights from Billings to Barcelona.
When flying from Billings to Barcelona, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 50% versus a flight in the morning.