The Latvian national carrier serves over 60 destinations from its home base in Riga and 90 percent of its flights departed or arrived on schedule in 2017.
OAG’s defines on-time performance as flights that arrive or depart within 15 minutes of their scheduled arrival and departure times.
Hong Kong Airlines only managed a punctuality rate of 74.46 percent in 2016, but last year, that grew sharply to 88.83 percent.
Hawaiian Airlines rounds off the top three with 87.24 percent of its flights arriving or departing on schedule. Only two U.S. airlines made OAG’s top-20 list. The other one is Delta which ranked 16th with 82.95 percent of its flights on time.