About Aldarra Foundation
The Aldarra Foundation is a Seattle-focused, high-dollar donor that concentrates its philanthropy on major cultural and health institutions. Its giving is dominated by multi-million dollar gifts to the Museum of Flight (aviation/aerospace museum and education) and Seattle Children’s Hospital (pediatric healthcare), suggesting a priority for large capital and program support for flagship local institutions. The foundation makes few but substantial grants, often in multiple disbursements to the same organizations.
Focus Areas
Aviation/aerospace museum preservation and STEM education (Museum of Flight)Pediatric healthcare and hospital capital/program support (Seattle Children’s Hospital)Major local cultural institution endowments and capital projects in the Seattle area
Who They Fund
paramedics / first responderscancer patients and clinical researchers (pediatric, gynecologic)low-income adults / people exiting poverty / unhoused individualsregional communities (e.g., Puget Sound)service-animal teams / human–canine program participants
About Aldarra Foundation
The Aldarra Foundation’s recent giving is defined by repeated, very large support for two Seattle institutions: the Museum of Flight Foundation and Seattle Children’s Hospital. Those organizations account for the biggest grants on file, with multi-year awards that point to long-term backing rather than one-off sponsorships. The foundation also funds a small set of other Puget Sound nonprofits, including organizations working in health research, homelessness services, animal welfare, media, and local public spaces. Its grant history shows a clear preference for established, place-based nonprofits with substantial operating, program, or capital needs. Museum of Flight Foundation received $51,000,000 in 2025, $40,800,000 in 2024, and $25,773,000 in 2023 for various projects and programs. Seattle Children’s Hospital received $26,000,000 in 2025, $20,800,000 in 2024, and $13,651,000 in 2023 for various projects and programs. Beyond those anchor institutions, the foundation has also supported Fred Hutchinson Cancer Research, Marys Place Seattle, Hopelink, and Treehouse, indicating interest in healthcare, housing stability, and child-focused services within the Seattle area.
What Aldarra Foundation Funds
In science education and aerospace, the foundation gave $51,000,000 to Museum of Flight Foundation for various projects, alongside earlier awards of $40,800,000 in 2024 and $25,773,000 in 2023 for related work. In pediatric healthcare, Seattle Children’s Hospital received $26,000,000 in 2025 and $20,800,000 in 2024 for various projects, with a prior $13,651,000 grant in 2023 for various programs. Health research appears in multiple forms. Fred Hutchinson Cancer Research received $1,800,000 in 2024 for flash radiation immuno-oncology and gynecologic cancer, plus $1,068,200 in 2023 for various programs. The University of Washington Foundation received $1,650,000 in 2024 for cryofluorescent tomographic imaging for the radiology optical imaging core. For housing and adult-support services, Hopelink received $920,545 in 2023 for equipping to exit poverty through housing, case management, and adult education.
How Aldarra Foundation Gives
Typical grant sizes are high: the 25th percentile is $500,000, the median is $920,545, and the 75th percentile is $1,800,000. The recent record also shows repeated awards to the same organizations across several years, especially for major Seattle institutions and a handful of recurring local nonprofits. The foundation is structured as a limited-life foundation making directed grants to pre-selected organizations, and it does not accept unsolicited requests. It also does not fund individuals and does not make program-related investments.
Financial Snapshot
Annual Giving
$100M
Total Assets
$946K
Total Revenue
$100M
Total Expenses
$100M
Typical Grant Size
Most grants fall between $500K and $1.8M, with a median of $921K.
25th Percentile
$500K
Median
$921K
75th Percentile
$1.8M
Geographic Reach
Local2 states funded
About 88% of grants go to recipients in WA.
Funding intensity
LowHigh
Headquarters
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