Southwest Airlines on Monday morning canceled hundreds of more flights—coming after the airline scrapped about 2,000 over the weekend—causing shares to drop during morning trading. According to tracking website FlightAware, approximately 350 Southwest flights were canceled Monday, although it’s down from more than 1,000 cancelations on Sunday. The Dallas-based airline’s president, Mike Van de Ven, told staff on Sunday night that Southwest is short-staffed at the moment and will “need to continue to adjust our schedules as this environment evolves.” “We’ve already made significant reductions from our previously published November and December schedules, and if we think we need to do more, we will,” Van de Ven said in a message to employees, according to media reports. The Epoch Times has contacted Southwest regarding Van de Ven’s comments. A spokesperson for the airline on Sunday declined to comment on rampant social media and passenger speculation that the cancelations were caused by …