e3fc0434_anced_seat_selection___Gadling__Premium_Services
[0] Spirit [Earliest available] During booking, before purchase [Charge?] $5 and up depending on route [Can you pre book an exit row?] Yes, for a fee [Premium Services] 
Upgrades to “Big Front Seat” from $25 per flight
Once a free perk, many airlines now charge for advanced seat selection - Gadling
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