Airline stocks were taking a beating Monday, but travelers have so far been undeterred by rising COVID-19 cases as a the number of travelers rose to a post-pandemic record over the weekend. Transportation Security Administration throughput data showed that 2,227,704 travelers went through TSA checkpoints on Sunday, the most since Feb. 28, 2020, which was more than a week before the World Health Organization declared the coronavirus outbreak a pandemic. And the three-day total of 6,407,500 travelers, from Friday through Sunday, was the most since the three-day stretch ended Feb. 28, 2020. Meanwhile, the U.S. Global Jets ETF /zigman2/quotes/207744796/composite JETS -1.37% dropped 4.8% toward a six-month low, as the S&P 500 /zigman2/quotes/210599714/realtime SPX +0.08% tumbled 1.8%. Among the Jets ETF's more active U.S.-based components, shares of American Airlines Group Inc. /zigman2/quotes/209207041/composite AAL -4.40% shed 6.2%, United Airlines Holdings Inc. /zigman2/quotes/205037281/composite UAL -2.97% slid 6.2% and Delta Air Lines Inc. /zigman2/quotes/200327741/composite DAL -2.80% dropped 5.1%.