Birmingham International Airport will enter into last-ditch talks with union representatives today in a bid to avert strike action which could ground all planes on nine days up to and over Christmas.
It is understood the meeting will discuss possible compromises, although both BIA and Amicus have reached entrenched positions in the dispute over the sacking of two security workers for unauthorised absences.
BIA has said it cannot allow security arrangements to be "dictated by industrial ballots" while the union has said the airport must be "held to account" for firing the two men over allegations they believe to be without foundation.
The strikes will last from 6am until 7pm and start on Monday, followed by similar action on December 8, 10, 12, 19, 24, 26, 31 and January 6.
The Birmingham Post has been contacted by scores of passengers concerned about their flights out of the country and also ex-pats worried their plans to fly home to visit relatives will now be ruined.
The airport has advised passengers to check with their airlines about alternative arrangements.
It added planes and crew being in the wrong place when the walkouts end would cause knock-on delays to other flights outside the strike days.
Low cost airline My Travel has advised passengers to still check in on strike days.
"Firstly, there is a chance the industrial action will not go ahead and secondly, if it does, we will still fly those passengers from East Midlands Airport instead.
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"All we are concerned about is our customers getting away on holiday and that will still happen."
Last night fellow airline Flybe also advised passengers to check in as normal.
It said: "We are closely monitoring this situation and are working on a contingency plan to do all possible to minimise any disruption."
A spokesman for the Association of British Travel Agents said its members would be meeting today to discuss emergency plans.
"These will normally involve flying people out on earlier or later flights so that people can still take their holidays.
"Members of the public will be informed, if necessary, by their travel agent or tour operator of what these new measures are.
"However, if people are booked on scheduled flights they will need to contact their airline."