In many situations for radio and TV ads, it is cheaper to run them nationally, or shotgun-targeted, then to actually exclude certain markets.
A great example of this Sonics Drive In. There are two in all of Southern California - one in Anaheim, the other in El Centro, 120 miles east of San Diego. There are none in the San Francisco-San Jose Metros, and 1 in Sacramento. We're talking about 2 Sonics that are within driving distance of 27-30 million people. Most people in LA, San Jose, San Francisco, San Diego and Sacramento couldn't tell you where one is - rightfully so. However, its just way easier to buy nationally-targeted ad inventory.
Another example would be Emirates advertising in the Wall Street Journal. They only fly to JFK, but I see their ads in the WSJ in LA, SF, and when I travel to other cities.
Whats my point? Sure, its possible that KE is coming to MSP. It also could just be the economics of advertising.