
If you are traveling on Wednesday, September 11, you’ll notice flags flying at half-staff at airports around the country to mark the 23rd anniversary of 9/11.
Here’s what they’re honoring:
On September 11, 2001, four airplanes were hijacked as part of a coordinated plan.
Two planes originated at Boston Logan International Airport (BOS); one left from Washington Dulles International Airport (IAD); and one departed Newark International Airport (EWR), now Newark Liberty International Airport. The two planes hijacked after leaving Boston Logan International were flown into the Twin Towers of the World Trade Center in New York City.
The plane hijacked after leaving Dulles International hit the Pentagon, near Washington, D.C.
The fourth plane left Newark International Airport and crashed in a field in Shanksville, Pennsylvania.
Nearly 3000 people were killed that day and many more were injured.
On Wednesday you’ll see and be invited to join airport and airline staff who will pause activity at 8:46 a.m. (EDT). They will observe a moment of silence timed to the exact time the first plane struck the North Tower of the World Trade Center.
We’ll try to post the Tweets and messages airports share about their events marking the day. If we miss yours, please send it along.
Today we remember and honor the lives lost and the heroes who emerged on September 11, 2001. Across TSA, we remain dedicated to strengthening and securing our nation’s transportation systems & upholding the mission we’ve been entrusted with since that fateful day. #NeverForget pic.twitter.com/eOY3S4XsXv
— TSA (@TSA) September 11, 2024
#NeverForget 🇺🇸 @TSA #CLTairport pic.twitter.com/3vRQy2AF9l
— CLT Airport (@CLTAirport) September 11, 2024
As we reflect on the tragic events of 9/11, we honor the bravery and dedication of those who risked their lives to protect others. Your heroic efforts during that tragic day and in the years that followed made our communities safer.🇺🇸 pic.twitter.com/72uhiaEwpf
— Atlanta Airport (@ATLairport) September 11, 2024
We will forever hold in our hearts the loved ones we lost 23 years ago. The American Airlines Flight Academy on our Fort Worth campus is home to a 9/11 memorial garden — a place of remembrance dedicated to the 23 members of our #AATeam we lost Sept. 11, 2001. We will #NeverForget pic.twitter.com/0XIOhxEmmL
— americanair (@AmericanAir) September 11, 2024
09.11.01. Forever and always in our hearts. ❤️🇺🇸 pic.twitter.com/xJjKGPrl5F
— Reagan Airport (@Reagan_Airport) September 11, 2024
Never forget. 🇺🇸
— Denver Int'l Airport (@DENAirport) September 11, 2024
This piece of twisted steel serves as a somber reminder of the 2,996 lives lost in the 9/11 attack – including 412 first responders.
It was recovered from the World Trade Center and is located at our Fire House 35 on 75th Ave. pic.twitter.com/AqGkJFWkiM
On this 23rd anniversary of 9/11, we remember and honor those who lost their lives. #NeverForget pic.twitter.com/CkrZhdgajC
— Port Authority of NY & NJ (@PANYNJ) September 11, 2024
On September 11, 2001, at 9:45 am, The FAA closed U.S. airspace—the first unplanned closure of U.S. airspace in history. In just a matter of hours, all commercial air traffic was grounded. #September11 pic.twitter.com/L7Lbel2hcf
— National Air and Space Museum (@airandspace) September 11, 2024

9/11 Memorial at Boston Logan International Airport
If you are traveling to or from Boston Logan International Airport (BOS) on September 11 – or anytime – keep in mind that the airport has a 9/11 Memorial honoring the passengers and crews of American Airlines Flight 11 and United Airlines Flight 175. Those are the two planes that left Logan for Los Angeles but were hijacked by terrorists and flown into the World Trade Towers in New York.
The Place of Remembrance – near the Hilton Hotel at Logan – has landscaped paths leading to a large glass cube featuring two glass panels etched with the names of every person aboard each flight.
Visitors can go inside the cube and look up at the sky through a prism of reflective panels. At night, the cube glows with a soft light.