Data Bank: These are the 20 busiest routes at PDX in the fourth quarter

As airlines contended with a busy holiday season amid historically stormy weather, here's a look at the top 20 busiest fourth-quarter routes departing PDX, where airlines have added more flights and seats since last year.

Data Bank: These are the 20 busiest routes at PDX in the fourth quarter
As airlines contended with a busy holiday season amid historically stormy weather, here's a look at the top 20 busiest fourth-quarter routes departing PDX, where airlines have added more flights and seats since last year.