Passengers endured yet another day of airport disruption yesterday despite an easi ng of the anti-terror procedures.
And airport operator BAA continued to be the focus of airline anger over the delays and cancellations which have crippled schedules over the last few days.
There was also confusion over just what airline passengers were allowed to carry on to aircraft.
In line with the softer line taken by the Government today, most airports were allowing hand luggage - albeit smaller bags than were previously permitted - to be taken on planes.
But BAA said the hand baggage ban introduced last week would not be lifted at the country's biggest and busiest airport, Heathrow, until early this morning.
And Thomas Cook Airlines said it was asking its passengers to resist bringing hand luggage to airports for the rest of the week.
Also, First Choice Holidays, while welcoming the relaxation in restrictions, said it was "disappointed our customers have had to queue and suffer because of a lack of resources and procedures to deal with the raising of security to the highest level". The day began w ith the Government announcement that passengers would be allowed to carry one item of cabin baggage on to planes.
This bag should not exceed 45cm in length, 35cm in width and 16cm in depth - about the half the size of bags previously allowed as cabin luggage.
Heathrow said that it could not lift the hand baggage ban until early this morning as "staff had to be fully up to speed with the new regulations".
This annoyed Heathrowbased airlines who were still smarting over what they saw as a failure by BAA to have enough staff on duty to deal with the crisis over the weekend.
Virgin Atlantic said it was frustrated about the situation and wondered whether airlines were getting value for the money they paid BAA to use airports.
Under instruction from BAA, BA had to cancel 44 Heathrow flights yesterday and also axed 26 Gatwick services. Other Heathrow users Virgin Atlantic and bmi also axed flights yesterday.
Budget carriers Ryanair and easyJet, which were badly hit last week, axed only a few flights.
There were lengthy queues at both Heathrow and Gatwick today, but regional airports reported few problems.
Manchester Airport said the new baggage procedures were "running smoothly" and there were no delays or cancellations. Leeds Bradford also coped well with the re-introduction of hand baggage.
Plymouth Airport had minor delays and there were no delays at Birmingham International Airport.