Sign up or register for CheapOair to reveal a promo code you can use today. Enter CheapOair promo code at the time of checkout. This advertised promo code provides discounts against their service fees on stated routes. A maximum of $5 per person can be saved by using this promo code, 4 passengers are needed to redeem the full value. Promo code and instant savings offers can be combined upto the amount of service fees. Excess savings will not be applied.