Flight 629 Memorial:
On a mission to preserve the history

The Flight 629 memorial aims to preserve the history of the tragic event of Flight 629 – the first ever-plane bombing over US soil, including honoring the 44 passengers and crew killed, utilizing interactive technology to capture the impact this tragedy had on not just the residents in Weld County, but also on the victims’ family members, and historically as a nation

Flight 629 Memorial:
Help us build a permanent tribute

The Flight 629 memorial aims to preserve the history of the tragic event of Flight 629 -- the first-ever plane bombing over U.S. soil, including honoring the 44 passengers and crew killed. The permanent memorial will be built in Weld County where the tragedy occurred.

  • On November 1, 1955, the first ever plane bombing over US soil for a commercial airline flight occurred, killing all 44 persons on board.

  • It was a national disaster unlike anything continental US experienced and shocked the entire nation. Exploding over six square miles over recently harvested beet fields in Weld County, Colorado.

  • the blast was so powerful, that people could see it for 20 miles. Farmers and citizens rushed onto the fields before the FBI and Civil Aviation Board could arrive.

  • What they encountered would haunt them forever. It's time to honor what happened.

Mission Statement
The Flight 629 Memorial was founded in November of 2023 to acknowledge the 44 passengers and crew who perished on the United Airlines Flight on November 1, 1955 on the beet fields and surrounding communities, part of which has now become the growth of Firestone.

We desire to commemorate the volunteers, First Responders, Weld County community and state agencies, that came out on this night to assist with this unexpected tragedy.


The 629 board and committee intend to raise funds to have a ribbon cutting ceremony and commission a home for a monument as we recognize the 70th anniversary, November 1, 2025.

Our hope is to provide a place for healing and reflection to the victims, families, community, the State of Colorado and the nation.

Note: This board held a meeting at the historic Stapleton Field, which is now the FlyteCo Tower on April 9, 2024. Please give your support to this business


Flight 629 / Unsung Heroes Across America has also formed as a 501(c)(3) nonprofit to raise funds to build the future memorial.

To donate, visit our GoFundMe if you’d like to support the Flight 629 memorial.

‘I wanted to make my dad’s life count,’

The story of Flight 629 in a daughter’s words

The explosion of United Air Lines Flight 629 on November 1, 1955 was the first attack on a commercial airline in the United States. It was also the deadliest act of mass murder in Colorado history, killing all 44 people on board.

This is the story of one of the family members of a victim who lost a father she would never get to know. A story of healing through forgiveness.

United 629: The night a son blew up his mother's flight over Colorado

On Nov. 1, 1955, United Flight 629 took off from Stapleton Airport in Denver. Eleven minutes later, the plane exploded. The investigators soon learned that the tragedy was a bombing – and that a 23-year-old man from Denver was responsible.

“The story needs to be told. Both the history, the passengers… There’s nothing done after all these years.

Marian Poeppelmeyer
-Daughter of victim

“To inspire future generations… to be heroes in their own communities,”

Marian Poeppelmeyer
-Daughter of victim

Sign up to receive updates from the Flight 629 committee and be first to know on the progress of the memorial.

How you can help

We are working on several methods to give, including a direct donation form on this website and a way to mail a check to our nonprofit.
Our GoFundMe campaign is now live, click below if you’d like to give.