Update: this popular deal may have sold out. See more deals >
The Colorado-based airline has cut prices on 66 domestic routes, starting at $138 round-trip. The offer is subject to the following rules:
– You can travel between now and February 13.
– The cheapest flights are on Tuesdays and Wednesdays, and Sunday travel is excluded from the deal.
– 7-day advance purchase required.
– Sale prices are one-way only; no round-trip purchase required.
– Book tickets no later than 11:59pm ET on November 12.