Winter storm warnings were in effect for parts of Michigan on Sunday, while weather advisories were in effect for parts of the Midwest and Great Lakes region.
More people are expected to travel during the holiday weekend as airfare and gas prices drop. But rain and cold could pose obstacles through early Wednesday.
Delays and cancellations have hit airports in the Northeast, just in time for the July 4 holiday. Airlines and regulators are bickering about who is to blame. Here’s what you need to know.