Museum of Flight Foundation
9404 E Marginal Way S, Tukwila, WA · IRS data through FY2024
Revenue, expenses and net assets
Revenue Expenses Net assets
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| FY2024 | $75,663,364 | $30,000,457 | $410,626,578 |
| FY2023 | $65,311,789 | $26,853,233 | $361,195,672 |
| FY2022 | $43,389,189 | $24,336,514 | $317,485,559 |
| FY2021 | $40,753,721 | $19,566,852 | $307,046,973 |
| FY2020 | $18,574,103 | $17,843,155 | $283,240,932 |
| FY2019 | $28,399,588 | $26,270,854 | $277,963,568 |
| FY2018 | $23,947,628 | $23,769,517 | $274,698,660 |
| FY2017 | $27,442,154 | $23,340,173 | $277,463,624 |
| FY2016 | $43,425,345 | $23,196,632 | $271,565,056 |
| FY2015 | $43,258,911 | $23,767,368 | $251,469,138 |
| FY2014 | $115,590,731 | $17,720,873 | $233,402,979 |
| FY2013 | $24,039,746 | $16,226,287 | $135,356,284 |
| FY2012 | $22,089,124 | $14,551,938 | $127,351,465 |
| FY2011 | $13,442,972 | $13,903,044 | $119,610,780 |
Form 990 filings
The returns filed by Museum of Flight Foundation (EIN 91-0785826), including Form 990 PDFs and e-file data by year, are available in ProPublica's Nonprofit Explorer. The figures on this page come from IRS data files built from those returns.
Where the revenue came from
| Source | Amount | % of revenue |
|---|---|---|
| Contributions & grants | $60,071,253 | 79% |
| Program service revenue | $10,552,837 | 14% |
| Other revenue | $5,039,274 | 7% |
Where the money was spent
| Category | Amount | % of expenses |
|---|---|---|
| Program services | $23,688,610 | 79% |
| Management & general | $3,818,184 | 13% |
| Fundraising | $2,493,663 | 8% |
What the numbers show
- Contributions & grants made up 79% of total revenue in FY2024.
- Program services accounted for 79% of functional expenses, management & general 13%, and fundraising 8%.
- 79% of functional expenses went to program services in FY2024. That is higher than 65% of 20 Arts, Culture & Humanities organizations in WA.
- Net assets covered about 164.2 months of expenses at the end of the reporting year. That puts it in the 92nd percentile among 918 Arts, Culture & Humanities organizations in WA.
- Total revenue was the highest among 931 Arts, Culture & Humanities organizations in WA.
- Total revenue rose from $13,442,972 in FY2011 to $75,663,364 in FY2024. Revenue increased in 9 and decreased in 4 of 13 year-over-year comparisons.
- Expenses exceeded revenue in 1 of 14 reported years (FY2011).
- The highest revenue on record here is $115,590,731 in FY2014.
- Net assets grew from $119,610,780 to $410,626,578 between FY2011 and FY2024.
- Contributions and grants made up 44% of revenue in FY2011 and 79% in FY2024.
- Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity).
Figures compared against other organizations of the same NTEE program area in the same state. See the methodology page for how these are calculated and the guide to reading nonprofit financials for their limits.
About this organization
THE MUSEUM OF FLIGHT EXISTS TO ACQUIRE, PRESERVE AND EXHIBIT HISTORICALLY SIGNIFICANT AIR AND SPACE ARTIFACTS, WHICH PROVIDE A FOUNDATION FOR SCHOLARLY RESEARCH, AND LIFELONG LEARNING PROGRAMS THAT INSPIRE AN INTEREST IN AND UNDERSTANDING OF SCIENCE, TECHNOLOGY AND THE HUMANITIES.
IRS status
| Ruling year | 1965 |
| Subsection | 501(c)(3) |
| Classification | Public charity |
| Program area (NTEE) | A110 — Arts, Culture & Humanities |
| Donations | Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (public charity). |
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Source: Internal Revenue Service — Exempt Organizations Business Master File (downloaded November 4, 2026), Statistics of Income extracts, Form 990 e-file data, Publication 78 and the Automatic Revocation list. Figures are as reported by the organization; IRS processing may adjust them. This is not a charity rating and not tax advice. Confirm deductibility in IRS Tax Exempt Organization Search.
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