US: Northeast storm:Cincinnati to East coast: airlines advisories (AC, Delta)

Snow forecast for Cincinnati, Columbus, Ohio and Pittsburgh
http://www.aircanada.com/en/travelinfo/before/operation/index.html

From Delta airlines:
http://www.delta.com/content/www/en_US/traveling-with-us/alerts-and-advisories/northeast-storm.html
Severe weather will impact travel to, from or through the Northeast. Check flight status frequently for up-to-the-minute info about your flight plans, or get updates sent directly to your wireless device or email with Delta Messenger.
Rescheduling Flights
If your flight is canceled or significantly delayed, you are entitled to a refund. Even if your flight is not canceled, you may make a one-time change to your ticket without fee if you are scheduled to travel to, from, or through the following destinations on Delta, Delta Connection®, or Delta-coded flights during the specified time periods listed below.

Additional collection in fares may apply. See Conditions & Restrictions below.

Impacted Travel Date(s) Mar 24-25, 2013
Ticket must be Reissued On or Before March 29, 2013
Rebooked Travel must begin no later than Mar 29, 2013

When rescheduled travel occurs beyond March 29, 2013, the change fee will be waived. However, a difference in fare may apply. Final travel must be completed by end of ticket validity, one year from date of original issue.

Affected Destination(s) (To / From / Through)
Baltimore, MD (BWI)
New York, NY (JFK)
New York, NY (LGA)
Newark, NJ (EWR)
Philadelphia, PA (PHL)
Pitsburgh, PA (PIT)
Washington, DC (IAD)
Washington, DC (DCA)
White Plains, NY (HPN)

Conditions & Restrictions

Changes to origins and destinations may result in an increase in fare. Any difference in fare between your original ticket and the new ticket will be collected at the time of booking.