BA has imposed an immediate bag restriction on it’s US flights, restricting one bag per person only from Heathrow or Gatwick. Expect security checkpoints to have increased as well as well as other airlines following suite .
BAA is reporting (Heathrow Airport)
“Travelling to the USA? Passengers travelling to the United States should expect their airline to carry out additional security checks prior to boarding. To support this process, which will take time, please allow extra time to check in and limit the amount of hand baggage taken on to the plane.”
Air Canada has modified its restrictions too
“Air Canada advises passengers travelling to the U.S. that due to enhanced government security measures air travellers should arrive early at airports to allow extra time to clear security screening. Passengers should also expect flight delays, cancellations and missed connections, and limit themselves to a single piece of carry-on baggage.
Air Canada recommends passengers travelling to the U.S. to arrive early at the airport for their flight in order to allow adequate time for additional personal searches. Under new rules enacted by Transport Canada and the U.S. Transportation Security Administration, passengers and their carry-on baggage will be subject to full searches both at airport screening points and prior to boarding at the aircraft gate area.
As a result of the added security precautions, passengers should also expect delayed and cancelled flights as well as missed connections. Air Canada will endeavour to transport passengers to their destination as quickly as possible and rebook passengers who miss their connections at no charge.
While these measures directly affect only flights from Canada to the United States, domestic and international flights may also experience delays due to airport congestion and delayed aircraft. For information on a flight’s status please consult www.aircanada.com.
In addition, new rules imposed by Transport Canada will limit the amount of carry-on baggage to one item per person travelling on flights from Canada to the United States.”
Expect more changes as the story develops