Minnesotans this weekend are expected to open the summer travel season by taking to the skies and roadways in droves. Here are five things to know about air travel at Minneapolis-St. Paul International Airport this summer:

— New concessions at Terminal 1: Mill City Tavern, Poppy's Bagels, Custom Burgers are on the newly expanded G Concourse; Crisp & Green and Sebastian Joe's ice cream on on Concourse E; and Caribou Coffeeis at the Terminal 1 bag claim.

— The Transportation Security Administration now allows teenagers ages 13 to 17 to use TSA PreCheck screening for free when traveling on the same reservation with parents or guardians who are enrolled in the program and if the teen's boarding pass has the PreCheck indicator. Children 12 and under already were allowed to use the PreCheck line when traveling with an enrolled parent or guardian without restriction.

— Sun Country will offer curbside check-in service beginning June 1 for passengers taking domestic flights. Three curbside check-in stations outside Terminal 2 will be staffed from 5 to 8 a.m. and noon to 3 p.m. Thursdays through Mondays until Sept. 1.

— MSP's No. 2 carrier, Sun Country, will add new destinations this summer: Omaha; Kansas City, Mo.; Wilmington, N.C.; Colorado Springs; Traverse City, Mich.; Rapid City, S.D.; and Branson, Mo.

— MSP's dominant carrier, Delta Air Lines, will resume nonstop service this summer to Albuquerque, N.M.; Buffalo, N.Y.; Richmond, Va.; and Colorado Springs. Nonstop international service will begin this summer to Keflavik, Iceland.