Aviation OAG: Tokyo Haneda the world's most punctual large airport By Robert Silk / January 06, 2016 Share 1 An All Nippon Airways check-in counter at Tokyo Haneda. Photo Credit: Shutterstock -- Airports in Japan led the way in producing on-time flights in 2015, according to a new report from the aviation data analytics company OAG. Meanwhile, only one U.S. carrier was among the top 20 in terms of on-time performance, the OAG Punctuality League study found.With an average on-time performance of 91.25%, Tokyo Haneda led all large airports, defined as those which service more than 20 million seats per year. Eleven U.S. airports made the list, led by Minneapolis-St. Paul in fourth and Atlanta, the world’s busiest airport, in eighth. Another Japanese airport, Osaka, led the way in timeliness last year for small airports servicing less than 10 million seats. Osaka had an on-time performance of 93.85%. No U.S. airport made the top 20 in that list. On the airlines front, OAG found that AirBaltic was the most prompt in the world with an on-time performance of 94.39%. Hawaiian Airlines led U.S. carriers by completing 89.11% of its flights on-time, good for ninth in the world. OAG defines on-time as any flight that arrives within 15 minutes of its schedule. Alaska was the second-ranked U.S. airline, followed by Delta. Southwest ranked fourth among U.S. carriers, American ranked sixth and United ranked seventh.