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Passengers are enduring delays in blacked-out terminals or have had their flights diverted mid-air, after a huge power cut hit Atlanta's Hartsfield-Jackson international airport on Sunday.。

The world's busiest airport, Hartsfield-Jackson said it had experienced power outages after 1 p.m. on Sunday, according to a statement.。

SEE ALSO:Some jerk just diverted a flight by naming his hotspot 'bomb on board'。

The airport later stated that the airport's electricity supplier, Georgia Power, believed the outage was caused by extensive fire damage at an underground electrical facility. The fire not only impacted the facility, but substations serving the airport.。

Passengers affected by a widespread power outage wait in long lines at the International Terminal of Hartsfield-Jackson Atlanta International Airport in Atlanta, Georgia, on Dec. 17.Credit: ERIK S. LESSER/EPA-EFE/REX/Shutterstock
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The Federal Aviation Administration has issued a ground stop for flights to Atlanta — all inbound flights are being held at their origin until Sunday at 11 p.m. EST.。

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Flight tracking site FlightAware reports that 1,109 flights have been cancelled to and from Atlanta, out of 1,209 cancelled to and from U.S. airports.。

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Many inbound flights have been diverted in the air, with passengers ending up all over the U.S. These diverted flights have resulted in some pretty interesting (albeit supremely annoying if it's your flight) maps. 
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Delta flight 246 from New York's JFK airport kept flying right past Atlanta and looped back to Baltimore.。

Credit: Flightaware/screenshot。

United flight 672 was sent back to Houston.。

Credit: FLIGHTAWARE/SCREENSHOT。

Delta flight 296 all the way from Tokyo was diverted to Detroit.。

Credit: FLIGHTAWARE/SCREENSHOT
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Delta flight 1920 from Newark airport was diverted to Columbia. 。

Credit: FLIGHTAWARE/SCREENSHOT 。

Delta flight 2628 from New York's LaGuardia airport was diverted to Charleston. 。

Credit: FLIGHTAWARE/SCREENSHOT
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While Delta flight 1461 headed from LaGuardia to Savannah.。

Credit: FLIGHTAWARE/SCREENSHOT 。

ExpressJet fight 5344 looped around and ended up in the Tri-Cities。

Credit: FLIGHTAWARE/SCREENSHOT 。

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The power outage is ongoing, so more diversions could be up ahead. 。

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