DALLAS — Delta’s travails, and those of its customers, move into day two with the airline canceling nearly 250 flights.

The cancellations Tuesday follow about 1,000 cancelled flights Monday and almost 3,000 delayed flights after an outage at its Atlanta headquarters initiated a global meltdown of its booking and communications systems.

The airline was back online after a number of hours Monday, but the outages were so widespread that it is still dealing with the ripple effects a day later.

More than 1,000 people spent the night at Narita airport outside Tokyo because of the shutdown and, while flights were resuming Tuesday, Delta spokeswoman Hiroko Okada said more delays are expected.

The airline posted a video apology by CEO Ed Bastian. And it offered refunds and $200 in travel vouchers to people whose flights were canceled or delayed at least three hours.

Delta’s challenge on Tuesday will be to find enough seats on planes during the busy summer vacation season to accommodate the tens of thousands of passengers whose flights were scrubbed.