Tourism & Cruises

Here’s why American Airlines, JetBlue and other flights were delayed at the Miami airport

Travelers at Miami International Airport and other airports across the country experienced delays early Friday after a technical issue made it difficult for people to book tickets and check in for flights from several carriers.

American Airlines told the Miami Herald early Friday that the issue was with Sabre, a service that some carriers use for bookings. Sabre said the system “outage,” which affected multiple carriers, has been resolved. The company said the glitch was caused by a Dell EMC “hardware redundancy failure” and that Dell EMC is working to learn why it occurred.

The glitch affected flights from American Airlines, JetBlue, Delta Air Lines, Frontier Airlines and Southwest Airlines, said MIA spokesman Greg Chin. He said 13 arrivals and 16 departures were delayed because of the issue. Long lines were seen at MIA early Friday, with people waiting to check in or rebook flights.

West Palm Beach resident Jenna Waterous, 22, and her mom were among the people affected by the delays. The pair had been at the airport for a few hours, waiting for their 5:30 a.m. American Airlines flight to Dallas when they learned about the delay.

They had a connecting flight to catch in Dallas, this one to Honolulu, to celebrate Waterous’ graduation from the University of Florida. Their flight was delayed only an hour. In Dallas, they missed their flight to Honolulu by 10 minutes.

“And we RAN,” Waterous told the Miami Herald in a direct message on Twitter.

Thankfully, they were able to book tickets for another flight to Hawaii later in the day. Now, she’s looking at the bright side.

“Hey, I’ll be sitting on a beach drinking from a coconut soon!” she said.

Travelers flooded American Airlines counters early morning Friday as travelers at Miami International Airport and other airports across the country experienced delays after a technical issue made it difficult for people to book tickets and check in for flights from several carriers, on Friday, May 21, 2021.
Travelers flooded American Airlines counters early morning Friday as travelers at Miami International Airport and other airports across the country experienced delays after a technical issue made it difficult for people to book tickets and check in for flights from several carriers, on Friday, May 21, 2021. Pedro Portal pportal@miamiherald.com

Fort Lauderdale-Hollywood International Airport said it was not experiencing any issues, and that any prior technical issues were “short lived and resolved.”

The outage also caused delays at other airports across the country, with people posting complaints and videos on social media of crowded, long lines, including at John F. Kennedy International Airport.

This story was originally published May 21, 2021 at 9:02 AM.

Michelle Marchante
Miami Herald
Michelle Marchante covers the pulse of healthcare in South Florida and also the City of Coral Gables. Before that, she covered the COVID-19 pandemic, hurricanes, crime, education, entertainment and other topics in South Florida for the Herald as a breaking news reporter. She recently won first place in the health reporting category in the 2025 Sunshine State Awards for her coverage of Steward Health’s bankruptcy. An investigative series about the abrupt closure of a Miami heart transplant program led Michelle and her colleagues to be recognized as finalists in two 2024 Florida Sunshine State Award categories. She also won second place in the 73rd annual Green Eyeshade Awards for her consumer-focused healthcare stories and was part of the team of reporters who won a 2022 Pulitzer Prize for the Miami Herald’s breaking news coverage of the Surfside building collapse. Michelle graduated with honors from Florida International University and was a 2025 National Press Foundation Covering Workplace Mental Health fellow and a 2020-2021 Poynter-Koch Media & Journalism fellow.  Support my work with a digital subscription
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