Where: Alpena, MI (APN), Appleton, WI (ATW), Bloomington, IL (BMI), Cedar Rapids, IA (CID), Chicago – Midway, IL (MDW), Chicago – O’Hare, IL (ORD), Des Moines, IA (DSM), Flint, MI (FNT), Grand Rapids, MI (GRR), Green Bay, WI (GRB), Kalamazoo, MI (AZO), Kansas City, MO (MCI), Lansing, MI (LAN), Madison, WI (MSN), Milwaukee, WI (MKE), Moline, IL (MLI), Montreal, QC, Canada (YUL), Oklahoma City, OK (OKC), Ottawa, ON, Canada (YOW), Pellston, MI (PLN), Peoria, IL (PIA), Saginaw, MI (MBS), Traverse City, MI (TVC), Toronto, ON, Canada (YYZ), Tulsa, OK (TUL) and Wichita, KS (ICT)

When: Jan. 11-12

Update – Sunday 12:15 p.m.

Operations are returning to normal following a winter storm that brought frozen and mixed precipitation to parts of the Midwest. While the airline does not expect any additional cancellations, a weather waiver remains in place through Sunday for 25 cities across in the Upper Midwest and southeast Canada.

Customers are encouraged to check their flight status on Delta.com or the Fly Delta Mobile App. Customers can also get updates sent directly to their mobile device or by email with One-Time Flight Notification.

1 p.m. Saturday:

Where: Alpena, MI (APN), Appleton, WI (ATW), Bloomington, IL (BMI), Cedar Rapids, IA (CID), Chicago – Midway, IL (MDW), Chicago – O’Hare, IL (ORD), Des Moines, IA (DSM), Flint, MI (FNT), Grand Rapids, MI (GRR), Green Bay, WI (GRB), Kalamazoo, MI (AZO), Kansas City, MO (MCI), Lansing, MI (LAN), Madison, WI (MSN), Milwaukee, WI (MKE), Moline, IL (MLI), Montreal, QC, Canada (YUL), Oklahoma City, OK (OKC), Ottawa, ON, Canada (YOW), Pellston, MI (PLN), Peoria, IL (PIA), Saginaw, MI (MBS), Traverse City, MI (TVC), Toronto, ON, Canada (YYZ), Tulsa, OK (TUL) and Wichita, KS (ICT)

When: Jan. 11-12

Ahead of a winter storm pushing east across the Upper Midwest, Delta issued a weather waiver for customers traveling through 25 cities in the Midwestern U.S. and southeast Canada. The waiver allows customers with flexibility in their travel plans to make a one-time change to their itinerary without incurring a change fee.

As of Saturday morning, the airline cancelled 38 flights in the region as a result of the weather. Additional schedule adjustments remain a possibility as teams in the airline’s Operations & Customer Center continues to monitor the storm through the weekend.

Customers are encouraged to check their flight status on Delta.com or the Fly Delta Mobile App. Customers can also get updates sent directly to their mobile device or by email with One-Time Flight Notification.

Learn more about Delta weather waivers here.

Know before you go, with Delta's new SkyWatch Daily Outlook page

SkyWatch Daily Outlook is a customer-focused version of Delta's internal operational outlook, updated daily. SkyWatch provides customers with pertinent information about Delta's operation and will be posted to delta.com and the Fly Delta app in the advisories section, giving customers added transparency into potential disruptions to their travel plans.