Frontier Airlines will start nonstop service from Denver to Philadelphia International Airport on March 17, the Philadelphia Business Journal reported.
Tickets are available for as low as $99, according to Frontier's website.
Denver is the eighth city for which Frontier has added non-stop service from Philadelphia this year, which may be surprising considering that Frontier is headquartered there. The others are Fort Myers, Florida; Montego Bay, Jamaica; Minneapolis; Houston; Atlanta; Charlotte and Chicago.
In addition, Frontier is offering a 20-percent-off deal on its website through Oct. 1. In honor of NASA announcing that it had found signs of water on Mars, users can type in the promo code MARS to get discounts on domestic flights departing on Tuesdays or Wednesdays.
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