As part of its effort to improve its financial performance, Horizon is closing Butte and transferring its nine employees after cutting its twice-daily, 19-year-old service to Seattle. It is also eliminating its once daily Billings-Portland service, in addition to trimming five of its 31 round trips between Seattle and Portland. While it will also retain the same number of seats in the Pasco-Seattle market, it is shaving a roundtrip and replacing five Q400 and two Q200 flights with six Q400 flights. It is increasing its Kelowna-Seattle seats by 20 percent after reducing the four daily flights with Q200s and Q400s to three Q400s. The carrier, which earlier this year said it is shedding its CRJ-700s and Q200s to create a single-aircraft fleet as a cost-cutting measure, also announced changes at Idaho Falls, Boise, Lewiston, Medford, Redmond/Bend, Sun Valley, Wanatchee, Billings, Helena, San Jose, Sacremento and Pasco. Related Story