** Low-cost airline operator easyJet down 3.4 pct,near the bottom of the FTSE 100, after saying demand fortravel was dampened by security fears in the final weeks of 2015
** Co reports 3.7 pct fall in revenue per seat on a constantcurrency basis in the quarter ended Dec. 31, of it 2 pct pointsit attributed to fall-off in demand after Paris
** A fifth of co's 30-day avg vols gone through in the first10 minutes of trade
** Stock at 2-month lows, bottom of the Stoxx 600 Travel andLeisure Index
** Stock only non-commodities or financials sector faller inthe bottom ten FTSE losers as markets slide on oil priceconcerns (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)