Airtran (AAI) is up 29 cents to $5.25 amid relative strength in the airline sector Tuesday. Reuters reports that demand for air travel among business customers is picking up. According to UAL CFO Kathryn Mikells, “We’re clearing seeing signs of economic recovery and premium and corporate travelers returning.” The Arca Airline Index (.XAL) is up 2.4 percent with help from the 5.8 percent gain in AAI. Meanwhile, AAI call options are seeing action, with 2130 traded, or about 7X the normal for the first two hours of trading. Mar, April, and Oct $5 calls are seeing the bulk of the flow.