On August 02, Boeing confirmed that Canadian low-fare carrier WestJet ordered 20 Next-Generation 737s to add to the airline's all-737 fleet. The order is for 737-700s with conversion rights to 737-800s if desired.

WestJet, based in Calgary, Alberta, was one of the most profitable airlines in North America in 2006. It has consistently recorded over 15 percent annual growth as it expanded its routes across North America and the Caribbean. Founded in 1996, the airline currently operates 67 Next-Generation 737s. With this order, WestJet's fleet will grow to 108 leased or purchased Next-Generation 737s. Forty-one remain to be delivered.