72-hour sale: Southwest Airlines offers round-trip flights for as low as $100

Credit: DaytonDailyNews

Caption
Southwest Airlines Having Major 72-Hour

Credit: DaytonDailyNews

During one of their more popular sales of the year, Southwest Airlines is again offering customers non-stop round-trip flights for less than $100.

>> Read more trending news

Dozens of the carrier’s shortest routes are available for $49 each way. Other non-stop one-way fares are offered for $79, $99 and $129 for longer flights. Some international flights are also being offered at extreme discounts.

The prices of flights are loosely tied to distance, according to USA Today.

>> Related: American Airlines to decrease legroom for passengers

Discounted flights can be purchased for travel between Oct. 31 and Dec. 19 and from Jan. 3 through Feb. 14. Travelers cannot purchase the discounted tickets for travel on Fridays and Sundays.

The sale ends Thursday at 11:59 p.m. local time in the city of the departing flight.

This is the second time this year the airline is offering the deal. Southwest previously offered the low fares in June.

Read more at Southwest.

>> Related: Delta will pay passengers up to $10K to give up seats

A Southwest airlines plane lands at Chicago's Midway Airport in Chicago on Sepetmber 24, 2015. AFP PHOTO / KAREN BLEIER        (Photo credit should read KAREN BLEIER/AFP/Getty Images)
Caption
A Southwest airlines plane lands at Chicago's Midway Airport in Chicago on Sepetmber 24, 2015. AFP PHOTO / KAREN BLEIER (Photo credit should read KAREN BLEIER/AFP/Getty Images)

Credit: KAREN BLEIER

Credit: KAREN BLEIER