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Frontier’s spring sale ends today. Fares start at $29 one way!

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The sale is valid for bookings made by 11:59 PM ET on March 25 for domestic, nonstop travel on Tuesdays, Wednesdays, and Saturdays between April 14 and May 20.

Here is the sale page and restrictions. Here are the sale city pairs.

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I had no trouble pricing out Washington to Chicago for $29.

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Frontier now follows the ultra-low-cost, fee-for-everything model.

Seat selection costs $4+. They’ll assign you a seat at check in for free, but you’ll probably get the worst one.

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Only a personal item is free to bring on board. Checked bags cost $20+ and carry ons cost $30+, so I would think of these fares as costing $20 more each way and plan on checking a bag.

Even water costs money. Here’s the snack and drink menu.
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Getting These Flights for Free

There’s no need to pay cash for cheap, cash fares. You can redeem ThankYou Points at a rate of 1.25 cents each to purchase any airline ticket. That means a $29 fare would be 2,320 ThankYou Points and $0.

The Citi ThankYou® Premier Card is now offering a 40,000 point sign up bonus worth $500 in free flights on any flight, any time, on almost any airline with no blackout dates.