Say Hello to Summer Savings – Promo Offer Inside

*Promotion begins at 12 a.m. PST, 6/25/25 and purchase must be made on allegiantair.com by 11:59 p.m. PST, 6/26/25 for travel to be completed between 8/13/2025 and 2/10/26. Enter promo code FLYSUMMER21 in the shopping cart at check-out to save up to $21 off roundtrip or multi-segment itineraries when you spend $200 or more before taxes and fees. One-way itineraries are subject to $10.50 off. Limit 5 promo code uses per customer. Blackout dates 11/24/25-12/1/25 and 12/20/25-1/4/26. Management reserves the right to cancel or modify the promotion at any time. Not valid on previously purchased itineraries. Other restrictions may apply.