◊ Applies to all domestic travel. Book by Dec 31, 2017. Enter Promo Code at time of check out. The advertised Promo Code provides discounts against our service fees on stated routes. A maximum of $5 per person can be saved by using this promo code; a total up to four (4) passengers is needed to redeem the full value of Promo Code. Promo Code and Instant Savings offers can be combined up to the amount of our service fees. This Promo Code may not be used or combined with any other coupons, promotions or special offers. Promo Code expires on date indicated and may be withdrawn at any time without notice. Our standard service fees are $35 per person one-way/roundtrip for economy class tickets.