A significant number of customers are still without their luggage after a technical failure caused global flight disruption to British Airways.
BA is expecting to run a full schedule on Tuesday from Heathrow and Gatwick airports but said it still had work to do reuniting bags with passengers.
Experts predict the knock-on effect of the IT outage could continue for several days and BA is facing huge compensation costs, with reports suggesting the bill could top £100 million.
BA's chief executive Alex Cruz said a full investigation would take place into the failure which affected 75,000 passengers.
On Saturday morning at around 9.30 there was indeed a power surge that had a catastrophic effect over some communications hardware which eventually affected all the messaging across our systems.
We will have completed an exhaustive investigation on exactly the reasons of why this happened. We will, of course, share those conclusions once we have actually finished them. We have no evidence whatsoever that there was any cyber attack of any sort.
– ALEX CRUZ, BA'S CHIEF EXECUTIVE, SPEAKING TO SKY NEWS