Two major U.S. airlines are having impressive sales on fall and winter travel right now, but prospective passengers will have to act quickly as both sales end this week.

The Delta sale ends today, but you still have several hours to take advantage of deals that start at $97 for roundtrip flights. Flights from Los Angeles to New Orleans are just $217 round-trip and flights from Detroit to Savannah can be nabbed for $202 round-trip.

Tickets purchased under this sale will receive the airline’s basic economy level of service, meaning that passengers will be assigned a seat at check-in, will have to pay for checked baggage and will be charged a penalty for any flight changes or cancellations. The majority of fares are for travel between October and February 2020 but vary depending on the destination. 

Southwest Airlines launched a sale on fall and winter flights on Tuesday, with deals as low as $39 for one-way tickets. Tickets bought under this sale are nonrefundable and must be purchased at least 14 days in advance. Tickets are valid for the continental U.S. and interisland Hawaii travel between October 8, 2019, and March 4, 2020.

The sale can be applied to flights departing or arriving in San Juan, Puerto Rico, if they are between the dates of October 15, 2019, and December 5, 2019, or January 13, 2020, and March 5, 2020. Passengers who want to use this sale to fly internationally will have to do so between October 15, 2019, and December 11, 2019, or January 7, through March 5, 2020.

Blackout dates apply and seats, travel days, and markets are limited for these tickets. The final caveat is that customers will have to book before Southwest’s sale ends on September 26 at midnight. 

Short-haul deals include one-way flights from Baltimore to Boston and Los Angeles to Las Vegas for just $59. Passengers interested in flying across the country can score flights from Los Angeles to New York start at $209 one-way. International deals include one-way flights from Dallas to Belize City for just $176 and from Denver to Cancun for just $205 one-way.

Check out Southwest’s sale website and visit Delta’s “deals” page to find out more.