As with other continents and corners of the globe, Qatar Airways has differentiated itself from its Gulf rival Emirates but reaching cities not served by the Dubai-based megacarrier. Of the 11 North American destinations, four of them: Montreal, Miami, Philadelphia, and Atlanta, are not served by Emirates. Philadelphia and Miami can be explained primary due to Qatar's partnership with American Airlines through the oneWorld alliance, although this is increasingly under strain.
Qatar just celebrated 5 years in Montreal, which sees carriers from across the near Arab world, including Royal Jordanian, Royal Air Maroc, Air Algerie and Tunisair, as the city is a major destination for global migrant,s especially from the francophone world. Atlanta was an interesting choice for Qatar's tenth U.S. city, a destination made not in cooperation with, but more in spite of hometown Delta Air Lines.
Conversely, it is interesting to see that Qatar is absent from such primary gateways as San Francisco and Toronto.