Round-trip flights start at $40.

Visit cities like Austin for $20 one-way with Frontier's latest sale.
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Frontier Airlines flights to destinations around the country are starting at $20 one-way as part of the budget airline's fall sale.

The $20 one-way deals are available from a variety of cities, including New Orleans, Sacramento, Austin, Birmingham, Denver, Las Vegas, Oklahoma City, Tampa, San Antonio, Jacksonville, Albuquerque, Myrtle Beach, and more.

Return flights on most routes also start at $20 one-way, giving travelers $40 round-trip flights between cities like Las Vegas and Sacramento, Denver and Albuquerque, Jacksonville and Austin, and New Orleans and San Antonio.

Travelers will also find $24 and $29 one-way deals from Charlotte, Tampa, Chicago, Cincinnati, Des Moines, Memphis, and more.

Deals include $24 one-way flights from Orlando to both Atlanta and Jackson, from San Antonio to Tulsa and Jacksonville, and from Tampa to Charlotte and Norfolk.

For $29 one-way, passengers can also book flights from Atlanta to Orlando, Philadelphia to Charleston or Orlando, Denver to Des Moines, Louisville to Austin, and San Antonio to Memphis.

See what deals are available from your home airport on Frontier's website.

Deals are available for travel between Oct. 23 and Dec. 18 of this year (though blackout dates from Nov. 16 to 26 apply). The sale is available for booking until Oct. 17.

Frontier is a budget airline that charges additional fees for amenities like seat selection and baggage. The airline does offer purchases made as a bundle, which can be the best option depending on how many extras will be added for the trip.