Seattle has the most predictable free-day system in the country: on the first Thursday of every month, nearly every major museum in the city opens free — SAM and the Asian Art Museum all day, the Burke all day, MOHAI, the Museum of Flight, and the Wing Luke in the evening. No residency requirements, no zip-code checks — just show up (a few recommend reserving). Tacoma answers with Thursday nights of its own, and Bellingham and Port Townsend run First Friday and First Saturday traditions. Every entry below was checked against the museum's own admission page.
Beyond the free days: Seattle and King County library cardholders can borrow museum passes for the Wing Luke and others, Pierce County libraries do the same for the Tacoma museums, and Spokane's Northwest Museum of Arts & Culture runs half-price evenings (not free) on the last Wednesday of each month. The Frye and the Henry — two of Seattle's best art museums — never charge at all.
Seattle
Seattle Art Museum + Seattle Asian Art Museum
Regularly $29.99–$32.99 adultsThe anchor of Seattle's First Thursday tradition: both SAM downtown (open to 8 pm) and the Seattle Asian Art Museum in Volunteer Park are free all day, special exhibitions included in the celebration with performances and art activities. SAM's Olympic Sculpture Park on the waterfront is free 365 days a year.
🌐 Check current dates →Burke Museum
Regularly $24 adultsThe state natural history museum on the UW campus — dinosaurs, Northwest Native art, and visible working labs — is free all day on first Thursdays with hours extended to 8 pm. One of the best family free days in the city; pair it with the always-free Henry Art Gallery a few blocks south.
🌐 Check current dates →MOHAI — Museum of History & Industry
Regularly $25 adultsSeattle's history museum at Lake Union Park opens its core exhibits free on first Thursday evenings — the Boeing B-1 seaplane, the Seattle Journey galleries, and the kids' zone included. Youth 14 and under are free every day, so the evening window mainly saves the adult fares.
🌐 Check current dates →The Museum of Flight
Regularly $29 adultsThe largest independent air and space museum in the world is free on first Thursday evenings — Great Gallery, Personal Courage Wing, space gallery, and the Aviation Pavilion's Concorde and original Air Force One included. No tickets or reservations; arrive after 5 pm and wander until 9.
🌐 Check current dates →National Nordic Museum
Regularly $20 adultsBallard's striking Nordic Museum is free all day on first Thursdays, with evening hours to 8 pm. Reserve online for faster check-in or just walk in. Special exhibitions cost $5 on free days — still a bargain. Pair with a stroll to the Ballard Locks, free every day.
🌐 Check current dates →Wing Luke Museum
Regularly $24.95 adultsThe country's only pan-Asian Pacific American community museum — and permanent home of the Bruce Lee story — runs Free First Thursday evenings May through October. RSVP is optional but speeds check-in. Year-round, Seattle and King County library passes admit two for free.
🌐 Check current dates →Tacoma
Tacoma Art Museum
Regularly $18 adultsTAM is free every single Thursday evening — not monthly, weekly — making it the most dependable free museum night in Washington. The Chihuly glass and Haub Family Western American art collections are both included. Pair with the free Chihuly Bridge of Glass a few blocks away.
🌐 Check current dates →Washington State History Museum
Regularly $17 adultsThe state history museum's third-Thursday free window starts mid-afternoon and runs to 8 pm, covering the interactive Great Hall and traveling exhibitions. Pierce County, Tacoma, King County, and Puyallup library cardholders can also borrow free passes any time.
🌐 Check current dates →Museum of Glass
Regularly $18 adultsFree third-Thursday evenings include the museum's signature draw: the Hot Shop amphitheater, where you can watch glass artists work a live furnace. Note the traditional galleries are closed for renovation into fall 2026, so the free night is an especially good time to visit. All three Tacoma museums line up within a few blocks.
🌐 Check current dates →Bellingham & the Peninsula
Whatcom Museum
Regularly $12 adultsBellingham's Free First Fridays are a genuine all-day festival: the Lightcatcher building and Old City Hall both open free from morning to 9 pm with docent tours, kids' music classes, crafts, and evening concerts. Among the best-programmed free days anywhere in the state.
🌐 Check current dates →Jefferson Museum of Art & History
Regularly $12 adultsPort Townsend's museum in the 1892 City Hall — complete with the original jail — is free for everyone the first Saturday of each month, with extended evening hours. Youth under 17 are free every day, and regular admission covers same-day entry to the Rothschild House (April–September).
🌐 Check current dates →Always Free in Washington
No free day needed — these flagship museums never charge general admission.