You can hold a reservation for $22 (or 20€) if you need a little time to think before buying a ticket. The hold will guarantee your reservation (and its rate) for 6 days.
How can I benefit from this service?
The hold option is presented after you’ve selected your travel dates and entered your passenger information:
It is also available on the payment page (last step in the reservation):
What are the conditions for eligibility?
The first flight in your booking must be scheduled to depart at least 7 days from the date of the hold.