This budget airline just announced a two-day deal on flights from Boston

Considering a vacation in September? A limited-time summer deal on tickets departing from Boston has been announced by low-cost airline Frontier.

Snag one-way fares for as low as $59 during JetBlue s 3-day fall sale

During a two-day end-of-summer discount on September flights, which began on Wednesday and ends on Thursday, August 21 at 11:59 p.m. ET, travelers may purchase airfare from Boston for as little as $69.99 round-trip.

Sale rates must be bought at least 14 days before departure and are available for nonstop travel on a few days of the week from September 2 to September 30. A round-trip purchase is necessary.

According to a statement from Jeff Werkheiser, senior director of brand and customer engagement for Frontier Airlines, “We’re ending the summer with a bang in Boston by slashing fares and unlocking affordable travel to many exciting destinations.” Planning a last-minute September vacation with Frontier is ideal right now, plus you’ll have additional money to spend when you get there.

Travel completed between August 19 and November 19 can also earn triple travel miles for members of the airline’s reward program, Frontier Miles, if they make a direct purchase between August 19 and August 26.

Upfront Plus, a new seating choice that Frontier debuted last year, gives passengers a window or aisle seat with more legroom and a middle seat that is always empty. According to Frontier, First Class seating will be available later this year.

Reservations can be made using the Frontier mobile app or at FlyFrontier.com.

Kristi Palma writes about New England tourism as a culture reporter for Boston.com. She writes about hotels, airlines, and activities in Boston and New England. She is the writer of the weekly travel newsletter Scenic Six.