Southwest Airlines says the operational meltdown over the holiday weekend was partly caused by its scheduling software, which a union rep called as “outdated” (Taylor Rains/Insider)

Taylor Rains / Insider:
Southwest Airlines says the operational meltdown over the holiday weekend was partly caused by its scheduling software, which a union rep called as “outdated”  —  – Southwest Airlines has canceled nearly 2,600 flights so far on Tuesday after canceling over 2,900 on Monday.