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By Mahita Gajanan
December 18, 2017
A traveler sleeps on a baggage carousel at Hartfield-Jackson Atlanta International Airport, Sunday, Dec. 17, 2017, in Atlanta.
A traveler sleeps on a baggage carousel at Hartfield-Jackson Atlanta International Airport, Sunday, Dec. 17, 2017, in Atlanta.
Branden Camp—AP

Hundreds of flights have been cancelled following a power outage at Hartsfield-Jackson Atlanta International Airport Sunday that ruined travel plans for thousands of flyers.

Ahead of one the busiest travel weeks in the U.S., a sudden power loss caused by a fire at an underground electrical facility at the airport resulted in more than 1,000 flights cancelled Sunday and hundreds more cancelled or diverted Monday. While power at the airport has since been restored, many itineraries have changed.

Here’s what to do if your flight was rescheduled or cancelled.

Delta

Delta, whose main hub is located in Atlanta, has born the brunt of the mass flight cancellations. The airline said it cancelled more than 300 flights scheduled for Monday, most of which are early morning inbound flights, according to Delta’s Twitter account. Delta cancelled about 900 flights on Sunday.

Passengers scheduled to fly Delta between Dec. 17 and Dec. 19 are entitled to a refund if their flights are cancelled or delayed for more than 90 minutes. Customers can also make a one-time change to their ticket on or before Dec. 22. See more of Delta’s waiver details here.

Southwest Airlines

Southwest Airlines said on its website that it plans to operate on a regular schedule out of Atlanta on Monday. Passengers affected by cancellations on Dec. 17 or Dec. 18 can rebook their tickets for free for dates within 14 days of their original travel date.

American Airlines

About 19 American Airlines departures out of Atlanta have been cancelled for Monday, with all passengers rebooked without charge, a spokesperson for the airline said. Customers whose flights have been cancelled can also rebook for free or request a refund if scheduled to travel between Dec. 17 and Dec. 21.

United Airlines

Passengers traveling to or from Atlanta on United can rebook cancelled flights on or before Dec. 22, if their flights between Dec. 17 and Dec. 19 are affected.

JetBlue

JetBlue customers traveling to or from Atlanta through Dec. 19 can rebook their flights, if tickets were booked on or before Dec. 17. Those who have had flight cancellations can also opt for a refund.

Spirit Airlines

Spirit has issued a flexible travel policy that waives modification fees for customers who have to make reservation changes for flights affected between Dec. 17 and Dec. 18 until Dec. 21.

EDIT POST