SEATTLE, Nov 6 (Reuters) - Spanish airline Air Europa will add up to 15 n= ew Boeing Co. (BA) 737 narrow-body jets to its fleet, beginning with four= on leases in 2004, the two companies said on Thursday. The first four 737-800s will come on lease from ITOCHU AirLease, B.V., fo= r routes in Spain and between European cities. The 17-year-old airline has not yet said whether the 11 additional aircra= ft would come directly from Boeing or from a lessor. Boeing shares were up 35 cents, or 0.9 percent, at $38.95 in midday tradi= ng on the New York Stock Exchange. = =A92003 Reuters Limited. = Roger EWROPS