Several water fountains were shut down at a Cleveland airport after passengers aboard a Frontier Airlines flight became sick, airport officials said.

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ST. LOUIS, Mo. — Frontier Airlines is offering flights for as low as $15 during a nationwide sale that includes destinations like Orlando, Denver, and Las Vegas. The one-way flights must be booked three days in advance in order to get the discount. Travel must occur between September 8 to October 9, 2019. Discounted fares are also not available on Sundays.

Unfortunately, flights from St. Louis start at $25. But, a trip to Florida for less than the cost a dinner for two still isn’t bad. You can see all of the flights from your city on Frontier’s website.

You will still need to pay for a flight home. It is likely that the returning flight won’t be as cheap. But, there are good deals from Frontier for returning flights. For example, a flight from Orlando to St. Louis is just $29. So, the first flight may be a real deal. But, paying for a ticket home plus baggage can add up. Make sure to check the final cost before checking out.

A few of the deals from St. Louis: