Update: this popular deal may have sold out. See more deals >

Frontier Airlines has posted discount fares on nine domestic routes, good for travel through summer and early fall.

These are the rules:

– You can fly now through September 21.

– Fly any day of the week.

– Sale fares are one-way only; round-trip purchase not required.

– No advance purchase required.

– Book flights by 11:59pm May 19.

Search Cheap Flights on Frontier Airlines

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