As uncomfortable and tedious as air travel can be, there are some airports in North America that fliers find to be rather pleasant. Bloomberg Businessweek recently completed a study outlining the most frustrating airports in the land, but it also created a list of the most satisfying for fliers.Using a combination of data from a 39-question survey of 3,000 frequent fliers, on-time arrival and departure data, along with a calculation of how easy or difficult it is to reach the facility by car and public transportation, Bloomberg created what it called "The Airport Frustration Index." Measured out of a maximum of 100, airports with the highest frustration index are the most ... well,frustrating,while those with the lowest are the least.With that in mind, here are the 15 least frustrating airports in North America.15. Charlotte Douglas International Airport (CLT)Frustration Index: 50/100Why it's pleasant: Charlotte's Douglas International Airport kicks off Bloomberg's list of the most satisfying airports, with a solid performance across the board. CLT finished 10th in commute time with an average of 34 minutes from downtown Charlotte to the airport. The facility also finished 11th in on-time performance, with 81% of its flights leaving within its departure slot.14. Boston Logan International Airport (BOS)Frustration Index: 46.4Why it's pleasant: With an average commute time of just 18 minutes from downtown Boston, Logan Airport is the easiest-to-reach facility featured in Bloomberg's 36-airport survey. In addition, Logan's 80% on-time rating is 12th best on the list. Survey respondents gave the airport's security setup, restrooms, and food/shopping facility solid but not spectacular, ratings.13. Ronald Reagan Washington National Airport (DCA)Frustration Index: 45.6Why it's pleasant: According to survey respondents, Reagan National Airport has one of the best-managed check-in and security processes in North America. In fact, only Tampa, Portland, and Austin scored better. With an average trip of 32 minutes from the heart of D.C., DCA has the sixth-fastest commute. In addition, Reagan National also manages to get 80% of its flights out on time. The airport's only major weak point is its poorly rated dining and retail offerings.See the rest of the story at Business Insider Click here to read full news..