Travelers returning to PDX this summer July is expected to be Portland International Airport's busiest month, with peak days expected to see more than 50,000 travelers. Author: Bryant Clerkley (KGW) Updated: 5:00 PM PDT June 16, 2021 PORTLAND, Ore. — Portland International Airport is expecting about four times as many passengers this summer compared to last year. Officials say though travel volume is not back to pre-pandemic levels yet, this is still the busiest time of the year for PDX. Last summer 1.3 million people came through the airport. This year, officials expect around 4 million, with July being the peak month. KGW talked to travelers at PDX Wednesday.