In response to the recent terrorist attempt in Detroit, the Canadian Air Transport Security Authority (CATSA) in cooperation with the US TSA has implemented new temporary carryon restriction for flights to the US. These restrictions are expected to last for at least the next several days. From the CATSA website:
U.S.A. bound passengers are permitted zero carry-on bags effective immediately and lasting for several days. Passengers travelling within Canada are still permitted two carry-on bags (although to make the screening process most efficient, fewer carry-on items is preferred).
These rules will be strictly enforced during this period. There will be no flexibility.
Carry-on bag means items to which a passenger has access to during a flight, but does NOT include personal items such as small purses, cameras, coats, items for care of infants, laptop computers, diplomatic or consular bags, crutches, canes, walkers, containers carrying life sustaining items, medication or medical devices, musical instruments, or any special needs items.
For more information please consult the CATSA website.
Expect delays as passengers who have no complied with the new regulations will have to go back to the airline checkin counter to check their carryon bags, resulting in longer security lines. Some airlines are currently waiving their additional baggage fees in an effort to accommodate the new security restriction. Please check with your airline for their policy.