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Today only: Frontier is offering a fare sale for Summer and Fall travel. Fares start at $21 one way!

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The sale is valid for bookings made by 11:59 PM ET today (June 30) for domestic, nonstop travel on Tuesdays, Wednesday, and Saturdays between August 22 and December 16. Blackout dates are November 19 to December 1.

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Here is the sale page and restrictions. I see $21 fares between:

  • Atlanta and Cleveland
  • Atlanta and Cincinnati
  • Atlanta and Washington-Dulles
  • Chicago and Philadelphia
  • Chicago and Raleigh
  • Cincinnati and Washington-Dulles
  • Cleveland and Raleigh
  • Denver and Austin
  • Denver and Bozeman
  • Denver and Las Vegas
  • Denver and Kansas City
  • Denver and Phoenix
  • Denver and Salt Lake City
  • Philadelphia and Charlotte
  • Trenton and Charlotte
  • Trenton and Detroit

There are also many $29, $39, and higher fares, sorted by city.

I had no trouble pricing out Trenton to Charlotte for $21 in September.

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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 actually pay cash for cheap, cash fares. The Citi Prestige® Card comes with a $250 Air Travel Credit every calendar year that will cover the purchase of this ticket. If you haven’t used the credit yet, buy this fare with your Prestige, and you will receive an offsetting credit on your next statement, so you’ll get a completely free ticket. The Air Travel Credit will also offset seat selection, baggage, and food fees.