Extended: Frontier Sale for September/October Travel

Frontier's Buck Fare Sale has been extended yet again and now includes international fares. 

With taxes and fees, of course, domestic fares start at $30 round-trip.

Fares are good for nonstop travel in September/October.

Travel dates and restrictions may vary slightly by route. See our fare details for specifics.

Fares include:

Denver to Cancun $90 round-trip, nonstop

Philadelphia to Cancun $90 round-trip, nonstop

Cleveland to Cancun $90 round-trip, nonstop

St Louis to Cancun $138 round-trip, nonstop

Philadelphia to Montego Bay $159 round-trip, nonstop

Denver to Puerto Vallarta $124 round-trip, nonstop

Atlanta to Miami $30 round-trip, nonstop

Atlanta to Philadelphia $30 round-trip, nonstop

Miami to Philadelphia $44 round-trip, nonstop

Chicago to Philadelphia $30 round-trip, nonstop

Austin to Las Vegas $30 round-trip, nonstop

Houston to Phoenix $30 round-trip, nonstop

Houston to Philadelphia $30 round-trip, nonstop

Denver to Salt Lake City $30 round-trip, nonstop

Charlotte to Trenton $29 round-trip, nonstop

Minneapolis to Trenton $30 round-trip, nonstop

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